Satellite water quality data

Clearest beaches and surf spots

267 coastal spots ranked by underwater visibility. Satellite data from Copernicus Marine and NOAA VIIRS, updated daily.

Not bathing-water safety advice. Check official local notices before entering the water.

267 spots

#	Location	Country	Visibility ↓	Rating	Chlorophyll	Turbidity	SST
1	Siargao/Cloud 9	Philippines	40.4m	Crystal clear	0.1 mg/m3	0.3 g/m3	29.9°C
2	Teahupo'o	French Polynesia	37.9m	Crystal clear	0.1 mg/m3	0.3 g/m3	25.9°C
3	Tanegashima	Japan	34.8m	Crystal clear	0.1 mg/m3	0.3 g/m3	28.9°C
4	Tamarin Bay	Mauritius	34.2m	Crystal clear	0.1 mg/m3	8.0 g/m3	24.6°C
5	Aganoa	Samoa	33.6m	Crystal clear	0.1 mg/m3	0.3 g/m3	27.1°C
6	Miyazaki	Japan	32.4m	Crystal clear	0.1 mg/m3	0.4 g/m3	28.7°C
7	Rhodes	Greece	31.9m	Crystal clear	0.1 mg/m3	0.3 g/m3	26.8°C
8	Lanzarote/Famara	Spain	31.4m	Crystal clear	0.1 mg/m3	0.2 g/m3	24.2°C
9	La Santa	Spain	31.2m	Crystal clear	0.1 mg/m3	0.3 g/m3	24.2°C
10	El Quemao	Spain	30.9m	Crystal clear	0.1 mg/m3	0.3 g/m3	24.2°C
11	Fuerteventura/Cotillo	Spain	30.8m	Crystal clear	0.1 mg/m3	0.7 g/m3	24.2°C
12	Honolua Bay	United States	30.3m	Crystal clear	0.1 mg/m3	0.3 g/m3	27.1°C
13	Saint-Leu	Réunion	29.5m	Crystal clear	0.1 mg/m3	0.3 g/m3	25.2°C
14	El Confital	Spain	29.0m	Crystal clear	0.1 mg/m3	0.2 g/m3	24.3°C
15	Gran Canaria/El Confital	Spain	29.0m	Crystal clear	0.1 mg/m3	0.2 g/m3	24.3°C
16	Oludeniz	Turkey	28.8m	Crystal clear	0.1 mg/m3	0.3 g/m3	28.1°C
17	Tenerife	Spain	28.6m	Crystal clear	0.1 mg/m3	0.3 g/m3	24.3°C
18	Hookipa	United States	28.5m	Crystal clear	0.1 mg/m3	0.3 g/m3	26.9°C
19	Jaws/Pe'ahi	United States	26.7m	Crystal clear	0.1 mg/m3	0.3 g/m3	26.7°C
20	Fernando de Noronha	Brazil	25.9m	Crystal clear	0.1 mg/m3	0.2 g/m3	26.9°C
21	Deba	Spain	25.6m	Crystal clear	0.1 mg/m3	0.3 g/m3	24.1°C
22	Taitung	Taiwan	25.6m	Crystal clear	0.1 mg/m3	0.8 g/m3	28.8°C
23	Simeulue	Indonesia	25.1m	Crystal clear	0.1 mg/m3	0.3 g/m3	30.3°C
24	San Sebastián	Spain	24.8m	Crystal clear	0.1 mg/m3	0.3 g/m3	24.4°C
25	Zarautz	Spain	24.8m	Crystal clear	0.1 mg/m3	0.3 g/m3	24.1°C
26	Mundaka	Spain	24.6m	Crystal clear	0.2 mg/m3	5.6 g/m3	24.0°C
27	Baler	Philippines	24.5m	Crystal clear	0.2 mg/m3	1.2 g/m3	29.1°C
28	Sayulita	Mexico	24.1m	Crystal clear	0.2 mg/m3	0.5 g/m3	31.6°C
29	Krui	Indonesia	23.9m	Crystal clear	0.2 mg/m3	0.5 g/m3	28.8°C
30	Cloudbreak	Fiji	23.8m	Crystal clear	0.2 mg/m3	4.8 g/m3	25.3°C
31	Restaurants (Namotu)	Fiji	23.8m	Crystal clear	0.2 mg/m3	4.8 g/m3	25.3°C
32	Bathsheba	Barbados	23.6m	Crystal clear	0.2 mg/m3	1.0 g/m3	29.2°C
33	Mentawai Islands	Indonesia	23.3m	Crystal clear	0.2 mg/m3	0.3 g/m3	29.4°C
34	Vliho Bay	Greece	23.2m	Crystal clear	0.2 mg/m3	0.3 g/m3	27.7°C
35	Barra de la Cruz	Mexico	23.1m	Crystal clear	0.2 mg/m3	0.3 g/m3	31.5°C
36	Kuta Lombok	Indonesia	22.9m	Crystal clear	0.2 mg/m3	0.2 g/m3	26.8°C
37	San José del Cabo	Mexico	22.8m	Crystal clear	0.2 mg/m3	0.3 g/m3	32.0°C
38	Sopelana	Spain	22.6m	Crystal clear	0.2 mg/m3	0.3 g/m3	23.7°C
39	Getxo	Spain	22.6m	Crystal clear	0.2 mg/m3	0.3 g/m3	23.3°C
40	Playa Grande	Costa Rica	22.6m	Crystal clear	0.2 mg/m3	0.3 g/m3	30.4°C
41	Burleigh Heads	Australia	22.5m	Crystal clear	0.2 mg/m3	0.3 g/m3	20.6°C
42	Snapper Rocks	Australia	22.5m	Crystal clear	0.2 mg/m3	0.3 g/m3	20.4°C
43	Kirra	Australia	22.5m	Crystal clear	0.2 mg/m3	0.3 g/m3	20.4°C
44	Desert Point	Indonesia	22.4m	Crystal clear	0.2 mg/m3	0.2 g/m3	27.0°C
45	Bull Bay	Jamaica	22.4m	Crystal clear	0.2 mg/m3	5.1 g/m3	29.5°C
46	Le Moule	Guadeloupe	21.3m	Crystal clear	0.2 mg/m3	0.3 g/m3	28.9°C
47	Tofo	Mozambique	21.0m	Crystal clear	0.2 mg/m3	0.2 g/m3	23.5°C
48	Ponta Preta	Cape Verde	20.9m	Crystal clear	0.2 mg/m3	0.4 g/m3	26.6°C
49	Leucate	France	20.7m	Crystal clear	0.2 mg/m3	6.2 g/m3	25.5°C
50	Lennox Head	Australia	20.7m	Crystal clear	0.2 mg/m3	0.4 g/m3	20.4°C
51	Playa Hermosa	Costa Rica	20.7m	Crystal clear	0.2 mg/m3	0.5 g/m3	30.2°C
52	Pascuales	Mexico	20.7m	Crystal clear	0.2 mg/m3	0.5 g/m3	31.4°C
53	Somo	Spain	20.5m	Crystal clear	0.2 mg/m3	0.4 g/m3	23.0°C
54	Trestles	United States	20.4m	Crystal clear	0.2 mg/m3	0.7 g/m3	23.1°C
55	Keramas	Indonesia	20.4m	Crystal clear	0.2 mg/m3	0.2 g/m3	26.8°C
56	Canggu	Indonesia	20.4m	Crystal clear	0.2 mg/m3	0.2 g/m3	26.8°C
57	Lacanau	France	20.2m	Crystal clear	0.2 mg/m3	0.4 g/m3	23.9°C
58	Noosa	Australia	20.2m	Crystal clear	0.2 mg/m3	0.6 g/m3	20.2°C
59	Izu Peninsula	Japan	20.1m	Crystal clear	0.2 mg/m3	0.4 g/m3	26.9°C
60	Niijima	Japan	20.1m	Crystal clear	0.2 mg/m3	0.4 g/m3	27.6°C
61	Gracetown	Australia	19.9m	Crystal clear	0.2 mg/m3	0.3 g/m3	19.8°C
62	Praia da Pipa	Brazil	19.8m	Crystal clear	0.2 mg/m3	1.6 g/m3	27.0°C
63	Hossegor	France	19.7m	Crystal clear	0.2 mg/m3	2.6 g/m3	23.5°C
64	Capbreton	France	19.7m	Crystal clear	0.2 mg/m3	2.6 g/m3	24.0°C
65	La Gravière	France	19.7m	Crystal clear	0.2 mg/m3	2.6 g/m3	23.5°C
66	Les Cavaliers	France	19.7m	Crystal clear	0.2 mg/m3	2.6 g/m3	24.0°C
67	Seignosse	France	19.7m	Crystal clear	0.2 mg/m3	2.6 g/m3	23.5°C
68	El Tunco	El Salvador	19.7m	Crystal clear	0.2 mg/m3	0.3 g/m3	30.9°C
69	The Wedge	United States	19.4m	Crystal clear	0.2 mg/m3	0.5 g/m3	21.5°C
70	Huntington Beach	United States	19.4m	Crystal clear	0.2 mg/m3	0.5 g/m3	22.3°C
71	Puerto Escondido	Mexico	19.2m	Crystal clear	0.2 mg/m3	0.9 g/m3	31.3°C
72	Bingin	Indonesia	19.0m	Crystal clear	0.3 mg/m3	0.2 g/m3	26.3°C
73	Padang Padang	Indonesia	19.0m	Crystal clear	0.3 mg/m3	0.2 g/m3	26.2°C
74	Balangan	Indonesia	19.0m	Crystal clear	0.3 mg/m3	0.2 g/m3	26.3°C
75	Uluwatu	Indonesia	19.0m	Crystal clear	0.3 mg/m3	0.2 g/m3	26.3°C
76	Anakao	Madagascar	18.9m	Crystal clear	0.3 mg/m3	0.2 g/m3	23.0°C
77	Salinas	Spain	18.9m	Crystal clear	0.3 mg/m3	0.4 g/m3	21.0°C
78	El Sunzal	El Salvador	18.7m	Crystal clear	0.3 mg/m3	0.3 g/m3	30.9°C
79	Cimaja	Indonesia	18.1m	Crystal clear	0.3 mg/m3	0.9 g/m3	28.2°C
80	Anglet	France	17.9m	Crystal clear	0.3 mg/m3	0.5 g/m3	24.2°C
81	Biarritz	France	17.9m	Crystal clear	0.3 mg/m3	0.5 g/m3	24.6°C
82	Guéthary	France	17.9m	Crystal clear	0.3 mg/m3	0.5 g/m3	24.6°C
83	Laniakea	United States	17.5m	Crystal clear	0.3 mg/m3	1.5 g/m3	27.0°C
84	Sunset Beach	United States	17.5m	Crystal clear	0.3 mg/m3	1.5 g/m3	27.0°C
85	Waimea Bay	United States	17.5m	Crystal clear	0.3 mg/m3	1.5 g/m3	27.0°C
86	Pipeline	United States	17.5m	Crystal clear	0.3 mg/m3	1.5 g/m3	26.9°C
87	Rincon	United States	16.8m	Crystal clear	0.3 mg/m3	1.0 g/m3	21.5°C
88	Maroubra	Australia	16.7m	Crystal clear	0.3 mg/m3	0.4 g/m3	17.9°C
89	Narrabeen	Australia	16.7m	Crystal clear	0.3 mg/m3	0.5 g/m3	17.9°C
90	Dee Why	Australia	16.7m	Crystal clear	0.3 mg/m3	0.5 g/m3	17.9°C
91	Boracay	Philippines	16.7m	Crystal clear	0.3 mg/m3	0.3 g/m3	29.1°C
92	Shipwreck Bay	New Zealand	16.5m	Crystal clear	0.3 mg/m3	0.5 g/m3	15.5°C
93	Bells Beach	Australia	16.3m	Crystal clear	0.3 mg/m3	0.8 g/m3	13.1°C
94	Torquay	Australia	16.3m	Crystal clear	0.3 mg/m3	0.8 g/m3	13.5°C
95	Easkey	Ireland	16.3m	Crystal clear	0.3 mg/m3	0.3 g/m3	16.2°C
96	Tarifa	Spain	15.7m	Crystal clear	0.4 mg/m3	0.3 g/m3	21.0°C
97	Eoropie	United Kingdom	15.5m	Crystal clear	0.4 mg/m3	4.1 g/m3	14.0°C
98	Nias (Sorake)	Indonesia	15.5m	Crystal clear	0.4 mg/m3	1.2 g/m3	29.9°C
99	Nosara	Costa Rica	15.5m	Crystal clear	0.4 mg/m3	0.4 g/m3	30.5°C
100	Cabarete	Dominican Republic	15.4m	Crystal clear	0.4 mg/m3	6.0 g/m3	28.8°C
101	Santa Teresa	Costa Rica	15.4m	Crystal clear	0.4 mg/m3	0.3 g/m3	30.2°C
102	Popoyo	Nicaragua	14.8m	Good	0.4 mg/m3	0.7 g/m3	28.3°C
103	North Malé Atoll	Maldives	14.6m	Good	0.4 mg/m3	0.9 g/m3	29.1°C
104	Lanuza	Philippines	14.5m	Good	0.4 mg/m3	8.3 g/m3	30.1°C
105	Jeju Jungmun	South Korea	14.5m	Good	0.4 mg/m3	0.3 g/m3	28.3°C
106	Shonan	Japan	14.4m	Good	0.4 mg/m3	0.5 g/m3	27.3°C
107	Pantín	Spain	14.1m	Good	0.4 mg/m3	0.5 g/m3	16.0°C
108	Fraserburgh	United Kingdom	13.6m	Good	0.5 mg/m3	0.4 g/m3	13.9°C
109	Bundoran	Ireland	13.5m	Good	0.5 mg/m3	0.4 g/m3	16.3°C
110	Mullaghmore Head	Ireland	13.5m	Good	0.5 mg/m3	0.4 g/m3	15.8°C
111	Strandhill	Ireland	13.3m	Good	0.5 mg/m3	0.2 g/m3	16.2°C
112	Durban Bay of Plenty	South Africa	13.1m	Good	0.5 mg/m3	0.3 g/m3	21.4°C
113	North Stradbroke Island	Australia	13.0m	Good	0.5 mg/m3	0.8 g/m3	20.8°C
114	Brimms Ness	United Kingdom	12.8m	Good	0.5 mg/m3	0.4 g/m3	13.2°C
115	Dunnet Bay	United Kingdom	12.8m	Good	0.5 mg/m3	0.4 g/m3	13.2°C
116	Thurso East	United Kingdom	12.8m	Good	0.5 mg/m3	0.4 g/m3	13.5°C
117	Dakar Yoff	Senegal	12.8m	Good	0.5 mg/m3	0.5 g/m3	29.8°C
118	Ngor/Ouakam	Senegal	12.8m	Good	0.5 mg/m3	0.5 g/m3	29.8°C
119	Phillip Island	Australia	12.4m	Good	0.5 mg/m3	0.9 g/m3	13.2°C
120	Saltburn-by-the-Sea	United Kingdom	12.3m	Good	0.5 mg/m3	3.8 g/m3	15.1°C
121	New Smyrna Beach	United States	12.3m	Good	0.6 mg/m3	1.4 g/m3	29.0°C
122	Anchor Point	Morocco	12.1m	Good	0.6 mg/m3	0.8 g/m3	20.7°C
123	Taghazout	Morocco	12.1m	Good	0.6 mg/m3	0.8 g/m3	20.7°C
124	Raglan	New Zealand	12.0m	Good	0.6 mg/m3	7.4 g/m3	14.0°C
125	Angourie	Australia	11.9m	Good	0.6 mg/m3	0.6 g/m3	19.9°C
126	Santa Cruz	Portugal	11.6m	Good	0.6 mg/m3	0.4 g/m3	18.3°C
127	Sebastian Inlet	United States	11.6m	Good	0.6 mg/m3	1.1 g/m3	29.6°C
128	Avoca Beach	Australia	11.5m	Good	0.6 mg/m3	0.6 g/m3	17.7°C
129	Inch Beach	Ireland	11.4m	Good	0.6 mg/m3	0.2 g/m3	17.6°C
130	Baisha Bay	Taiwan	11.3m	Good	0.6 mg/m3	5.5 g/m3	28.8°C
131	Pavones	Costa Rica	11.3m	Good	0.6 mg/m3	1.3 g/m3	30.5°C
132	Thulusdhoo	Maldives	11.2m	Good	0.6 mg/m3	0.3 g/m3	29.1°C
133	Jeffreys Bay	South Africa	11.1m	Good	0.7 mg/m3	0.4 g/m3	19.3°C
134	Punta de Mita	Mexico	11.0m	Good	0.7 mg/m3	10.0 g/m3	31.3°C
135	El Palmar	Spain	10.9m	Good	0.7 mg/m3	0.8 g/m3	21.9°C
136	Sandsend	United Kingdom	10.8m	Good	0.7 mg/m3	0.5 g/m3	15.7°C
137	Runswick Bay	United Kingdom	10.8m	Good	0.7 mg/m3	0.5 g/m3	15.7°C
138	Mavericks	United States	10.7m	Good	0.7 mg/m3	0.8 g/m3	15.6°C
139	Harlyn Bay	United Kingdom	10.7m	Good	0.7 mg/m3	0.3 g/m3	18.1°C
140	Polzeath	United Kingdom	10.7m	Good	0.7 mg/m3	0.3 g/m3	18.1°C
141	G-Land	Indonesia	10.7m	Good	0.7 mg/m3	0.5 g/m3	25.4°C
142	El Gouna	Egypt	10.7m	Good	0.7 mg/m3	5.6 g/m3	29.4°C
143	Margaret River	Australia	10.3m	Good	0.7 mg/m3	1.2 g/m3	19.4°C
144	Lagos	Portugal	10.3m	Good	0.7 mg/m3	0.5 g/m3	19.5°C
145	Lakey Peak	Indonesia	10.2m	Good	0.8 mg/m3	0.4 g/m3	25.8°C
146	Chapel Porth	United Kingdom	10.2m	Good	0.8 mg/m3	0.4 g/m3	18.0°C
147	Porthleven	United Kingdom	10.2m	Good	0.8 mg/m3	0.4 g/m3	18.2°C
148	Porthtowan	United Kingdom	10.2m	Good	0.8 mg/m3	0.4 g/m3	18.2°C
149	Cocoa Beach	United States	10.1m	Good	0.8 mg/m3	7.3 g/m3	30.4°C
150	Bantham	United Kingdom	10.0m	Good	0.8 mg/m3	1.9 g/m3	18.5°C
151	Bigbury-on-Sea	United Kingdom	10.0m	Good	0.8 mg/m3	1.9 g/m3	18.5°C
152	Reykjanes Peninsula	Iceland	10.0m	Good	0.8 mg/m3	1.0 g/m3	11.9°C
153	Rincón	Puerto Rico	10.0m	Good	0.8 mg/m3	0.4 g/m3	29.7°C
154	Seaburn	United Kingdom	9.9m	Good	0.8 mg/m3	0.3 g/m3	15.0°C
155	Merewether	Australia	9.8m	Good	0.8 mg/m3	0.4 g/m3	17.1°C
156	Dungeons	South Africa	9.7m	Good	0.8 mg/m3	0.4 g/m3	13.4°C
157	Kommetjie	South Africa	9.7m	Good	0.8 mg/m3	0.4 g/m3	13.4°C
158	Bamburgh	United Kingdom	9.6m	Good	0.8 mg/m3	1.4 g/m3	14.6°C
159	Troncones	Mexico	9.6m	Good	0.8 mg/m3	2.5 g/m3	31.0°C
160	Santa Catalina	Panama	9.5m	Good	0.8 mg/m3	0.4 g/m3	29.5°C
161	Tynemouth	United Kingdom	9.2m	Good	0.9 mg/m3	2.3 g/m3	14.8°C
162	Widemouth Bay	United Kingdom	9.2m	Good	0.9 mg/m3	0.5 g/m3	19.3°C
163	Bude Summerleaze	United Kingdom	9.2m	Good	0.9 mg/m3	0.5 g/m3	19.3°C
164	Itacaré	Brazil	9.2m	Good	0.9 mg/m3	3.8 g/m3	25.6°C
165	Tiree	United Kingdom	9.2m	Good	0.9 mg/m3	0.6 g/m3	15.0°C
166	Lobitos	Peru	9.1m	Good	0.9 mg/m3	2.8 g/m3	22.3°C
167	Ichinomiya	Japan	9.1m	Good	0.9 mg/m3	1.0 g/m3	27.0°C
168	Tsurigasaki Beach	Japan	9.1m	Good	0.9 mg/m3	1.0 g/m3	27.0°C
169	Scarborough Beach	Australia	9.0m	Good	0.9 mg/m3	1.2 g/m3	16.6°C
170	Hiriketiya	Sri Lanka	8.9m	Good	0.9 mg/m3	0.5 g/m3	27.5°C
171	Blacks Beach	United States	8.8m	Good	0.9 mg/m3	0.7 g/m3	22.7°C
172	La Jolla Cove	United States	8.8m	Good	0.9 mg/m3	0.7 g/m3	22.7°C
173	Crantock	United Kingdom	8.5m	Good	1.0 mg/m3	0.5 g/m3	18.2°C
174	Perranporth	United Kingdom	8.5m	Good	1.0 mg/m3	0.5 g/m3	18.2°C
175	Newquay/Fistral	United Kingdom	8.5m	Good	1.0 mg/m3	0.5 g/m3	18.2°C
176	Constantine Bay	United Kingdom	8.5m	Good	1.0 mg/m3	0.5 g/m3	18.1°C
177	Lusty Glaze	United Kingdom	8.5m	Good	1.0 mg/m3	0.5 g/m3	18.2°C
178	Watergate Bay	United Kingdom	8.5m	Good	1.0 mg/m3	0.5 g/m3	18.1°C
179	Montañita	Ecuador	8.4m	Good	1.0 mg/m3	0.5 g/m3	26.5°C
180	Weligama	Sri Lanka	8.3m	Good	1.0 mg/m3	0.5 g/m3	27.3°C
181	Sennen Cove	United Kingdom	8.2m	Good	1.1 mg/m3	0.4 g/m3	18.2°C
182	Scarborough	United Kingdom	8.1m	Good	1.1 mg/m3	2.2 g/m3	15.7°C
183	Cayton Bay	United Kingdom	8.1m	Good	1.1 mg/m3	2.2 g/m3	15.8°C
184	Bloubergstrand	South Africa	7.9m	Moderate	1.1 mg/m3	0.7 g/m3	12.8°C
185	Gwithian	United Kingdom	7.7m	Moderate	1.2 mg/m3	0.9 g/m3	18.3°C
186	Praa Sands	United Kingdom	7.7m	Moderate	1.2 mg/m3	0.9 g/m3	18.3°C
187	Porthmeor	United Kingdom	7.7m	Moderate	1.2 mg/m3	0.9 g/m3	18.3°C
188	Arrifana	Portugal	7.7m	Moderate	1.2 mg/m3	0.5 g/m3	18.8°C
189	Razo	Spain	7.5m	Moderate	1.2 mg/m3	0.8 g/m3	17.9°C
190	Manorbier	United Kingdom	7.5m	Moderate	1.2 mg/m3	1.9 g/m3	19.1°C
191	Ericeira	Portugal	7.5m	Moderate	1.2 mg/m3	0.5 g/m3	18.8°C
192	Ribeira d'Ilhas	Portugal	7.5m	Moderate	1.2 mg/m3	0.5 g/m3	19.2°C
193	Newgale	United Kingdom	7.4m	Moderate	1.2 mg/m3	2.4 g/m3	18.0°C
194	Whitesands Bay	United Kingdom	7.4m	Moderate	1.2 mg/m3	2.4 g/m3	16.8°C
195	La Torche	France	7.3m	Moderate	1.3 mg/m3	0.4 g/m3	18.8°C
196	Baleal	Portugal	7.2m	Moderate	1.3 mg/m3	0.6 g/m3	19.6°C
197	Nazaré	Portugal	7.2m	Moderate	1.3 mg/m3	0.6 g/m3	18.7°C
198	Peniche/Supertubos	Portugal	7.2m	Moderate	1.3 mg/m3	0.6 g/m3	19.6°C
199	Brighton	United Kingdom	7.1m	Moderate	1.3 mg/m3	3.4 g/m3	19.6°C
200	Tramore	Ireland	7.0m	Moderate	1.4 mg/m3	0.5 g/m3	16.2°C
201	Kimmeridge Bay	United Kingdom	6.9m	Moderate	1.4 mg/m3	3.4 g/m3	19.9°C
202	Praia do Amado	Portugal	6.8m	Moderate	1.4 mg/m3	0.4 g/m3	19.3°C
203	Maresias	Brazil	6.8m	Moderate	1.4 mg/m3	1.1 g/m3	21.7°C
204	Sagres	Portugal	6.8m	Moderate	1.4 mg/m3	0.4 g/m3	18.2°C
205	Folly Beach	United States	6.8m	Moderate	1.4 mg/m3	5.4 g/m3	31.0°C
206	Ubatuba	Brazil	6.7m	Moderate	1.4 mg/m3	1.7 g/m3	22.3°C
207	Freshwater West	United Kingdom	6.7m	Moderate	1.4 mg/m3	2.6 g/m3	18.6°C
208	Santa Cruz	United States	6.7m	Moderate	1.4 mg/m3	0.6 g/m3	16.1°C
209	Mount Maunganui	New Zealand	6.6m	Moderate	1.5 mg/m3	0.5 g/m3	13.9°C
210	Huanchaco	Peru	6.6m	Moderate	1.5 mg/m3	0.6 g/m3	20.7°C
211	Imsouane	Morocco	6.5m	Moderate	1.5 mg/m3	0.5 g/m3	19.6°C
212	Dover	United Kingdom	6.4m	Moderate	1.5 mg/m3	5.1 g/m3	20.4°C
213	Nihiwatu	Indonesia	6.3m	Moderate	1.6 mg/m3	0.3 g/m3	25.2°C
214	Bournemouth	United Kingdom	6.3m	Moderate	1.6 mg/m3	3.5 g/m3	20.6°C
215	Compton Bay	United Kingdom	6.2m	Moderate	1.6 mg/m3	4.1 g/m3	20.9°C
216	Bracklesham Bay	United Kingdom	6.1m	Moderate	1.6 mg/m3	3.8 g/m3	20.4°C
217	Machrihanish	United Kingdom	6.0m	Moderate	1.7 mg/m3	0.9 g/m3	14.7°C
218	Bocas del Toro	Panama	6.0m	Moderate	1.7 mg/m3	1.6 g/m3	29.0°C
219	Unstad	Norway	5.9m	Moderate	1.7 mg/m3	2.1 g/m3	12.2°C
220	Torres	Brazil	5.9m	Moderate	1.7 mg/m3	2.0 g/m3	17.7°C
221	Sandycove	Ireland	5.8m	Moderate	1.8 mg/m3	1.8 g/m3	15.7°C
222	Outer Banks	United States	5.8m	Moderate	1.8 mg/m3	3.2 g/m3	29.3°C
223	Filey	United Kingdom	5.7m	Moderate	1.8 mg/m3	4.0 g/m3	16.6°C
224	Florianópolis	Brazil	5.7m	Moderate	1.8 mg/m3	1.3 g/m3	19.0°C
225	Medewi	Indonesia	5.3m	Moderate	2.0 mg/m3	0.5 g/m3	25.9°C
226	Jericoacoara	Brazil	5.3m	Moderate	2.0 mg/m3	4.7 g/m3	27.2°C
227	Joss Bay	United Kingdom	5.1m	Moderate	2.1 mg/m3	18.2 g/m3	20.6°C
228	Mirleft	Morocco	5.0m	Moderate	2.2 mg/m3	0.5 g/m3	22.0°C
229	Máncora	Peru	4.9m	Moderate	2.3 mg/m3	3.3 g/m3	25.5°C
230	Llangennith	United Kingdom	4.9m	Moderate	2.3 mg/m3	4.4 g/m3	20.0°C
231	Mui Ne	Vietnam	4.9m	Moderate	2.3 mg/m3	0.7 g/m3	26.4°C
232	Chicama	Peru	4.8m	Moderate	2.4 mg/m3	2.4 g/m3	20.5°C
233	Saunton Sands	United Kingdom	4.6m	Moderate	2.4 mg/m3	4.2 g/m3	19.3°C
234	Woolacombe	United Kingdom	4.6m	Moderate	2.4 mg/m3	4.2 g/m3	19.3°C
235	Putsborough	United Kingdom	4.6m	Moderate	2.4 mg/m3	4.2 g/m3	19.3°C
236	Croyde	United Kingdom	4.6m	Moderate	2.4 mg/m3	4.2 g/m3	18.9°C
237	Garopaba	Brazil	4.6m	Moderate	2.5 mg/m3	2.0 g/m3	19.1°C
238	Hoddevik	Norway	4.6m	Moderate	2.5 mg/m3	1.5 g/m3	12.4°C
239	Kovalam	India	4.5m	Moderate	2.5 mg/m3	3.1 g/m3	25.8°C
240	Caswell Bay	United Kingdom	4.3m	Moderate	2.7 mg/m3	7.7 g/m3	20.1°C
241	Langland Bay	United Kingdom	4.3m	Moderate	2.7 mg/m3	7.7 g/m3	20.1°C
242	Wrightsville Beach	United States	4.1m	Moderate	2.9 mg/m3	5.5 g/m3	28.8°C
243	Arugam Bay	Sri Lanka	3.9m	Moderate	3.1 mg/m3	0.3 g/m3	28.1°C
244	Saquarema	Brazil	3.8m	Moderate	3.3 mg/m3	0.9 g/m3	22.3°C
245	Dakhla	Morocco	3.8m	Moderate	3.3 mg/m3	2.1 g/m3	21.0°C
246	Rest Bay	United Kingdom	3.6m	Moderate	3.5 mg/m3	13.0 g/m3	20.5°C
247	Rockaway Beach	United States	3.4m	Moderate	3.8 mg/m3	1.8 g/m3	22.9°C
248	Cannon Beach	United States	3.4m	Moderate	3.9 mg/m3	3.9 g/m3	11.4°C
249	Matosinhos	Portugal	3.3m	Moderate	4.0 mg/m3	0.8 g/m3	17.3°C
250	Pichilemu	Chile	3.3m	Moderate	4.0 mg/m3	0.4 g/m3	13.5°C
251	Ocean Beach SF	United States	3.2m	Moderate	4.1 mg/m3	18.1 g/m3	19.0°C
252	Muizenberg	South Africa	3.0m	Reduced	4.6 mg/m3	0.5 g/m3	13.8°C
253	Pacific City	United States	3.0m	Reduced	4.6 mg/m3	7.1 g/m3	11.4°C
254	Piha	New Zealand	2.9m	Reduced	4.7 mg/m3	4.6 g/m3	13.7°C
255	Bolinas	United States	2.7m	Reduced	5.2 mg/m3	36.3 g/m3	20.2°C
256	Tybee Island	United States	2.7m	Reduced	5.3 mg/m3	6.9 g/m3	30.6°C
257	Gordon's Bay	South Africa	2.7m	Reduced	5.4 mg/m3	0.3 g/m3	14.2°C
258	Varkala	India	2.3m	Reduced	6.6 mg/m3	2.8 g/m3	26.0°C
259	Lahinch	Ireland	2.2m	Reduced	7.4 mg/m3	33.2 g/m3	17.7°C
260	Sidi Kaouki	Morocco	2.1m	Reduced	7.8 mg/m3	2.9 g/m3	19.0°C
261	Essaouira	Morocco	2.1m	Reduced	7.8 mg/m3	2.9 g/m3	18.3°C
262	La Union (San Juan)	Philippines	2.0m	Reduced	8.7 mg/m3	0.7 g/m3	28.5°C
263	Elands Bay	South Africa	1.8m	Reduced	10.6 mg/m3	0.6 g/m3	12.5°C
264	Carcavelos	Portugal	1.6m	Reduced	14.3 mg/m3	5.8 g/m3	19.2°C
265	Praia do Guincho	Portugal	1.6m	Reduced	14.3 mg/m3	5.8 g/m3	19.1°C
266	Costa da Caparica	Portugal	1.6m	Reduced	14.3 mg/m3	5.8 g/m3	19.2°C
267	Portrush	United Kingdom	1.3m	Reduced	46.8 mg/m3	9.6 g/m3	14.6°C

#11Fuerteventura/Cotillo

#15Gran Canaria/El Confital

#20Fernando de Noronha

#31Restaurants (Namotu)

#112Durban Bay of Plenty

#113North Stradbroke Island

#120Saltburn-by-the-Sea

#152Reykjanes Peninsula

#168Tsurigasaki Beach

#169Scarborough Beach

#198Peniche/Supertubos

#242Wrightsville Beach

#262La Union (San Juan)

#266Costa da Caparica

Satellite data from Copernicus Marine and NOAA CoastWatch. Data from 23 August 2026

Frequently asked questions

What is Secchi depth?

Secchi depth measures underwater visibility in metres. Higher numbers mean clearer water. Anything above 15m is considered excellent; below 3m is poor. Our primary source (Copernicus Marine) provides Secchi depth directly from merged multi-satellite observations. The fallback source (NOAA VIIRS) derives it from Kd490 using the Preisendorfer relationship.

Where does the data come from?

Two satellite sources, used in priority order. Primary: Copernicus Marine Service (EU), which blends multiple satellites into a gap-free L4 product covering Secchi depth, chlorophyll, and suspended particulate matter at 4km resolution. Fallback: NOAA CoastWatch VIIRS sensor aboard Suomi-NPP for spots where Copernicus has coastal land masking.

What does chlorophyll indicate?

Chlorophyll-a concentration (mg/m3) is a proxy for phytoplankton density. Low values typically mean clear, nutrient-poor water. Elevated levels above 5 mg/m3 may indicate an algal bloom, which can reduce visibility and occasionally cause irritation.

What is SPM / turbidity?

Suspended Particulate Matter (g/m3) measures particles floating in the water column (sediment, runoff, organic matter). Higher values mean murkier water. Values above 10 g/m3 usually indicate recent storm activity or river runoff.

What is SST?

Sea Surface Temperature in degrees Celsius from the Copernicus OSTIA satellite analysis. This blends observations from multiple satellites into a daily global product at 0.05 degree resolution, giving reliable coverage for all coastal spots.

How often is the data updated?

The catalogue is split across six independently monitored daily runs. Copernicus L4 data typically lags by 1 to 2 days. NOAA VIIRS weekly composites update once per week. Both sources search a small area around each coastal point to find the nearest ocean pixel.

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