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	Teahupo'o	French Polynesia	47.8m	Crystal clear	0.0 mg/m3	0.3 g/m3	25.7°C
2	Siargao/Cloud 9	Philippines	37.5m	Crystal clear	0.1 mg/m3	0.4 g/m3	30.4°C
3	Jaws/Pe'ahi	United States	35.6m	Crystal clear	0.1 mg/m3	0.3 g/m3	27.1°C
4	Hookipa	United States	35.0m	Crystal clear	0.1 mg/m3	0.3 g/m3	26.8°C
5	Honolua Bay	United States	33.2m	Crystal clear	0.1 mg/m3	0.3 g/m3	26.9°C
6	Fernando de Noronha	Brazil	33.1m	Crystal clear	0.1 mg/m3	0.3 g/m3	27.0°C
7	Tanegashima	Japan	33.1m	Crystal clear	0.1 mg/m3	0.3 g/m3	27.8°C
8	Aganoa	Samoa	32.8m	Crystal clear	0.1 mg/m3	0.3 g/m3	27.5°C
9	Lanuza	Philippines	32.7m	Crystal clear	0.1 mg/m3	7.8 g/m3	29.8°C
10	Baler	Philippines	32.5m	Crystal clear	0.1 mg/m3	0.3 g/m3	30.5°C
11	Saint-Leu	Réunion	32.0m	Crystal clear	0.1 mg/m3	0.3 g/m3	24.7°C
12	San José del Cabo	Mexico	32.0m	Crystal clear	0.1 mg/m3	0.3 g/m3	30.9°C
13	Tamarin Bay	Mauritius	31.4m	Crystal clear	0.1 mg/m3	14.9 g/m3	24.5°C
14	Cloudbreak	Fiji	29.7m	Crystal clear	0.1 mg/m3	5.2 g/m3	25.7°C
15	Restaurants (Namotu)	Fiji	29.7m	Crystal clear	0.1 mg/m3	5.2 g/m3	25.7°C
16	Bathsheba	Barbados	28.9m	Crystal clear	0.1 mg/m3	0.2 g/m3	29.5°C
17	Mentawai Islands	Indonesia	28.4m	Crystal clear	0.1 mg/m3	0.4 g/m3	29.1°C
18	Miyazaki	Japan	27.9m	Crystal clear	0.1 mg/m3	0.4 g/m3	27.4°C
19	Rhodes	Greece	27.4m	Crystal clear	0.1 mg/m3	0.3 g/m3	25.1°C
20	Playa Grande	Costa Rica	27.1m	Crystal clear	0.1 mg/m3	0.3 g/m3	30.4°C
21	Popoyo	Nicaragua	27.0m	Crystal clear	0.1 mg/m3	0.7 g/m3	29.5°C
22	Itacaré	Brazil	26.8m	Crystal clear	0.1 mg/m3	2.4 g/m3	26.5°C
23	Barra de la Cruz	Mexico	26.4m	Crystal clear	0.1 mg/m3	0.4 g/m3	29.6°C
24	El Sunzal	El Salvador	25.6m	Crystal clear	0.1 mg/m3	0.4 g/m3	29.7°C
25	Lanzarote/Famara	Spain	25.2m	Crystal clear	0.1 mg/m3	0.2 g/m3	23.1°C
26	Oludeniz	Turkey	24.7m	Crystal clear	0.1 mg/m3	0.4 g/m3	25.4°C
27	Thulusdhoo	Maldives	24.5m	Crystal clear	0.2 mg/m3	0.3 g/m3	30.1°C
28	Taitung	Taiwan	24.5m	Crystal clear	0.2 mg/m3	1.8 g/m3	28.7°C
29	Laniakea	United States	24.4m	Crystal clear	0.2 mg/m3	5.1 g/m3	26.7°C
30	Pipeline	United States	24.4m	Crystal clear	0.2 mg/m3	5.1 g/m3	26.8°C
31	Sunset Beach	United States	24.4m	Crystal clear	0.2 mg/m3	5.1 g/m3	26.7°C
32	Waimea Bay	United States	24.4m	Crystal clear	0.2 mg/m3	5.1 g/m3	26.7°C
33	Le Moule	Guadeloupe	24.3m	Crystal clear	0.2 mg/m3	0.3 g/m3	29.3°C
34	Margaret River	Australia	24.0m	Crystal clear	0.2 mg/m3	4.4 g/m3	18.3°C
35	El Tunco	El Salvador	23.9m	Crystal clear	0.2 mg/m3	0.4 g/m3	29.7°C
36	Tenerife	Spain	23.7m	Crystal clear	0.2 mg/m3	0.3 g/m3	24.6°C
37	Simeulue	Indonesia	23.5m	Crystal clear	0.2 mg/m3	0.3 g/m3	29.9°C
38	El Confital	Spain	23.5m	Crystal clear	0.2 mg/m3	0.3 g/m3	24.6°C
39	Gran Canaria/El Confital	Spain	23.5m	Crystal clear	0.2 mg/m3	0.3 g/m3	24.6°C
40	Gracetown	Australia	23.4m	Crystal clear	0.2 mg/m3	0.4 g/m3	19.0°C
41	Anakao	Madagascar	23.3m	Crystal clear	0.2 mg/m3	0.2 g/m3	25.1°C
42	Praia da Pipa	Brazil	23.3m	Crystal clear	0.2 mg/m3	0.7 g/m3	27.9°C
43	El Quemao	Spain	23.1m	Crystal clear	0.2 mg/m3	0.2 g/m3	23.5°C
44	Santa Teresa	Costa Rica	23.0m	Crystal clear	0.2 mg/m3	0.3 g/m3	30.2°C
45	Noosa	Australia	22.8m	Crystal clear	0.2 mg/m3	0.3 g/m3	22.3°C
46	Rincón	Puerto Rico	22.8m	Crystal clear	0.2 mg/m3	0.4 g/m3	30.1°C
47	Tofo	Mozambique	22.7m	Crystal clear	0.2 mg/m3	0.2 g/m3	24.7°C
48	Bull Bay	Jamaica	22.4m	Crystal clear	0.2 mg/m3	4.3 g/m3	29.5°C
49	Fuerteventura/Cotillo	Spain	22.3m	Crystal clear	0.2 mg/m3	0.7 g/m3	23.5°C
50	La Santa	Spain	21.8m	Crystal clear	0.2 mg/m3	0.2 g/m3	23.1°C
51	Nosara	Costa Rica	21.5m	Crystal clear	0.2 mg/m3	0.4 g/m3	30.0°C
52	Boracay	Philippines	21.4m	Crystal clear	0.2 mg/m3	0.3 g/m3	30.1°C
53	Vliho Bay	Greece	21.4m	Crystal clear	0.2 mg/m3	0.4 g/m3	24.0°C
54	Trestles	United States	20.4m	Crystal clear	0.2 mg/m3	0.4 g/m3	23.4°C
55	Durban Bay of Plenty	South Africa	20.4m	Crystal clear	0.2 mg/m3	0.4 g/m3	22.3°C
56	Keramas	Indonesia	20.2m	Crystal clear	0.2 mg/m3	0.3 g/m3	27.3°C
57	Canggu	Indonesia	20.2m	Crystal clear	0.2 mg/m3	0.3 g/m3	27.3°C
58	Desert Point	Indonesia	19.9m	Crystal clear	0.2 mg/m3	0.3 g/m3	27.0°C
59	Niijima	Japan	19.8m	Crystal clear	0.2 mg/m3	0.3 g/m3	25.4°C
60	Izu Peninsula	Japan	19.4m	Crystal clear	0.2 mg/m3	0.4 g/m3	24.5°C
61	Bingin	Indonesia	18.9m	Crystal clear	0.3 mg/m3	0.3 g/m3	27.0°C
62	Padang Padang	Indonesia	18.9m	Crystal clear	0.3 mg/m3	0.3 g/m3	26.7°C
63	Balangan	Indonesia	18.9m	Crystal clear	0.3 mg/m3	0.3 g/m3	27.0°C
64	Uluwatu	Indonesia	18.9m	Crystal clear	0.3 mg/m3	0.3 g/m3	27.0°C
65	Kuta Lombok	Indonesia	18.9m	Crystal clear	0.3 mg/m3	0.3 g/m3	26.3°C
66	El Gouna	Egypt	18.8m	Crystal clear	0.3 mg/m3	4.6 g/m3	27.2°C
67	Mundaka	Spain	18.6m	Crystal clear	0.3 mg/m3	0.3 g/m3	22.0°C
68	North Malé Atoll	Maldives	18.3m	Crystal clear	0.3 mg/m3	0.7 g/m3	29.9°C
69	Deba	Spain	18.3m	Crystal clear	0.3 mg/m3	0.3 g/m3	21.6°C
70	Montañita	Ecuador	17.8m	Crystal clear	0.3 mg/m3	0.5 g/m3	26.5°C
71	San Sebastián	Spain	17.8m	Crystal clear	0.3 mg/m3	0.3 g/m3	21.6°C
72	Zarautz	Spain	17.8m	Crystal clear	0.3 mg/m3	0.3 g/m3	21.8°C
73	Tarifa	Spain	17.7m	Crystal clear	0.3 mg/m3	0.3 g/m3	20.5°C
74	Merewether	Australia	17.5m	Crystal clear	0.3 mg/m3	0.2 g/m3	19.4°C
75	Hoddevik	Norway	17.2m	Crystal clear	0.3 mg/m3	0.3 g/m3	13.0°C
76	Krui	Indonesia	16.9m	Crystal clear	0.3 mg/m3	0.6 g/m3	27.6°C
77	Cabarete	Dominican Republic	16.7m	Crystal clear	0.3 mg/m3	1.1 g/m3	29.6°C
78	El Palmar	Spain	16.7m	Crystal clear	0.3 mg/m3	0.8 g/m3	21.9°C
79	Jericoacoara	Brazil	16.6m	Crystal clear	0.3 mg/m3	12.6 g/m3	27.9°C
80	Getxo	Spain	16.5m	Crystal clear	0.3 mg/m3	0.3 g/m3	20.8°C
81	Sopelana	Spain	16.5m	Crystal clear	0.3 mg/m3	0.3 g/m3	20.9°C
82	Capbreton	France	16.2m	Crystal clear	0.3 mg/m3	1.9 g/m3	21.1°C
83	La Gravière	France	16.2m	Crystal clear	0.3 mg/m3	1.9 g/m3	20.8°C
84	Les Cavaliers	France	16.2m	Crystal clear	0.3 mg/m3	1.9 g/m3	21.1°C
85	Hossegor	France	16.2m	Crystal clear	0.3 mg/m3	1.9 g/m3	20.8°C
86	Seignosse	France	16.2m	Crystal clear	0.3 mg/m3	1.9 g/m3	20.8°C
87	Nias (Sorake)	Indonesia	16.0m	Crystal clear	0.3 mg/m3	3.7 g/m3	29.8°C
88	Shipwreck Bay	New Zealand	15.9m	Crystal clear	0.4 mg/m3	0.8 g/m3	15.1°C
89	Burleigh Heads	Australia	15.8m	Crystal clear	0.4 mg/m3	0.3 g/m3	21.0°C
90	Kirra	Australia	15.8m	Crystal clear	0.4 mg/m3	0.3 g/m3	21.2°C
91	Snapper Rocks	Australia	15.8m	Crystal clear	0.4 mg/m3	0.3 g/m3	21.2°C
92	North Stradbroke Island	Australia	15.6m	Crystal clear	0.4 mg/m3	1.6 g/m3	22.5°C
93	Jeju Jungmun	South Korea	15.2m	Crystal clear	0.4 mg/m3	0.4 g/m3	25.6°C
94	Lennox Head	Australia	14.9m	Good	0.4 mg/m3	0.3 g/m3	20.3°C
95	Hiriketiya	Sri Lanka	14.9m	Good	0.4 mg/m3	0.5 g/m3	29.5°C
96	Ponta Preta	Cape Verde	14.8m	Good	0.4 mg/m3	0.3 g/m3	26.7°C
97	Arugam Bay	Sri Lanka	14.7m	Good	0.4 mg/m3	0.4 g/m3	29.2°C
98	Dungeons	South Africa	14.6m	Good	0.4 mg/m3	0.4 g/m3	14.4°C
99	Kommetjie	South Africa	14.6m	Good	0.4 mg/m3	0.4 g/m3	14.4°C
100	Weligama	Sri Lanka	14.6m	Good	0.4 mg/m3	0.6 g/m3	29.4°C
101	Reykjanes Peninsula	Iceland	14.4m	Good	0.4 mg/m3	0.7 g/m3	10.0°C
102	Sayulita	Mexico	14.3m	Good	0.4 mg/m3	2.4 g/m3	31.5°C
103	Razo	Spain	14.1m	Good	0.4 mg/m3	0.5 g/m3	15.7°C
104	Bells Beach	Australia	13.8m	Good	0.5 mg/m3	0.9 g/m3	14.1°C
105	Torquay	Australia	13.8m	Good	0.5 mg/m3	0.9 g/m3	13.9°C
106	Dakar Yoff	Senegal	13.8m	Good	0.5 mg/m3	0.5 g/m3	28.9°C
107	Ngor/Ouakam	Senegal	13.8m	Good	0.5 mg/m3	0.5 g/m3	28.9°C
108	Mirleft	Morocco	13.7m	Good	0.5 mg/m3	1.6 g/m3	21.1°C
109	Shonan	Japan	13.5m	Good	0.5 mg/m3	0.4 g/m3	23.7°C
110	Chapel Porth	United Kingdom	13.3m	Good	0.5 mg/m3	0.3 g/m3	17.2°C
111	Porthleven	United Kingdom	13.3m	Good	0.5 mg/m3	0.3 g/m3	17.1°C
112	Lagos	Portugal	13.3m	Good	0.5 mg/m3	0.5 g/m3	22.6°C
113	Porthtowan	United Kingdom	13.3m	Good	0.5 mg/m3	0.3 g/m3	17.1°C
114	Lacanau	France	13.3m	Good	0.5 mg/m3	0.3 g/m3	21.1°C
115	Santa Catalina	Panama	13.2m	Good	0.5 mg/m3	0.7 g/m3	29.9°C
116	Huntington Beach	United States	12.9m	Good	0.5 mg/m3	0.5 g/m3	23.2°C
117	The Wedge	United States	12.9m	Good	0.5 mg/m3	0.5 g/m3	23.2°C
118	Praia do Amado	Portugal	12.8m	Good	0.5 mg/m3	0.7 g/m3	21.5°C
119	Sagres	Portugal	12.8m	Good	0.5 mg/m3	0.7 g/m3	22.6°C
120	Gwithian	United Kingdom	12.8m	Good	0.5 mg/m3	0.7 g/m3	16.8°C
121	Porthmeor	United Kingdom	12.8m	Good	0.5 mg/m3	0.7 g/m3	16.8°C
122	Praa Sands	United Kingdom	12.8m	Good	0.5 mg/m3	0.7 g/m3	16.8°C
123	Salinas	Spain	12.7m	Good	0.5 mg/m3	0.4 g/m3	18.0°C
124	Phillip Island	Australia	12.6m	Good	0.5 mg/m3	0.5 g/m3	14.0°C
125	Tramore	Ireland	12.1m	Good	0.6 mg/m3	0.6 g/m3	16.1°C
126	Somo	Spain	11.8m	Good	0.6 mg/m3	0.3 g/m3	20.9°C
127	Constantine Bay	United Kingdom	11.8m	Good	0.6 mg/m3	0.8 g/m3	17.0°C
128	Crantock	United Kingdom	11.8m	Good	0.6 mg/m3	0.8 g/m3	17.1°C
129	Lusty Glaze	United Kingdom	11.8m	Good	0.6 mg/m3	0.8 g/m3	17.1°C
130	Newquay/Fistral	United Kingdom	11.8m	Good	0.6 mg/m3	0.8 g/m3	17.1°C
131	Perranporth	United Kingdom	11.8m	Good	0.6 mg/m3	0.8 g/m3	17.0°C
132	Watergate Bay	United Kingdom	11.8m	Good	0.6 mg/m3	0.8 g/m3	17.0°C
133	Avoca Beach	Australia	11.7m	Good	0.6 mg/m3	0.3 g/m3	18.8°C
134	Troncones	Mexico	11.4m	Good	0.6 mg/m3	9.2 g/m3	30.2°C
135	Puerto Escondido	Mexico	11.3m	Good	0.6 mg/m3	0.6 g/m3	30.3°C
136	Playa Hermosa	Costa Rica	11.3m	Good	0.6 mg/m3	0.5 g/m3	30.1°C
137	Pacific City	United States	11.1m	Good	0.7 mg/m3	0.9 g/m3	11.9°C
138	Anglet	France	10.8m	Good	0.7 mg/m3	0.4 g/m3	21.4°C
139	Biarritz	France	10.8m	Good	0.7 mg/m3	0.4 g/m3	21.5°C
140	Guéthary	France	10.8m	Good	0.7 mg/m3	0.4 g/m3	21.5°C
141	Sennen Cove	United Kingdom	10.8m	Good	0.7 mg/m3	0.5 g/m3	16.8°C
142	Arrifana	Portugal	10.4m	Good	0.7 mg/m3	0.7 g/m3	22.7°C
143	Harlyn Bay	United Kingdom	10.3m	Good	0.7 mg/m3	0.3 g/m3	17.0°C
144	Polzeath	United Kingdom	10.3m	Good	0.7 mg/m3	0.3 g/m3	17.0°C
145	Leucate	France	9.8m	Good	0.8 mg/m3	3.2 g/m3	22.2°C
146	La Torche	France	9.7m	Good	0.8 mg/m3	0.4 g/m3	18.4°C
147	Maroubra	Australia	9.6m	Good	0.8 mg/m3	0.2 g/m3	19.2°C
148	Bantham	United Kingdom	9.6m	Good	0.8 mg/m3	1.3 g/m3	17.4°C
149	Bigbury-on-Sea	United Kingdom	9.6m	Good	0.8 mg/m3	1.3 g/m3	17.4°C
150	Blacks Beach	United States	9.4m	Good	0.9 mg/m3	0.6 g/m3	23.7°C
151	La Jolla Cove	United States	9.4m	Good	0.9 mg/m3	0.6 g/m3	23.7°C
152	Baleal	Portugal	9.4m	Good	0.9 mg/m3	0.8 g/m3	17.8°C
153	Nazaré	Portugal	9.4m	Good	0.9 mg/m3	0.8 g/m3	18.1°C
154	Peniche/Supertubos	Portugal	9.4m	Good	0.9 mg/m3	0.8 g/m3	17.8°C
155	Pavones	Costa Rica	9.3m	Good	0.9 mg/m3	3.0 g/m3	30.2°C
156	Mui Ne	Vietnam	9.2m	Good	0.9 mg/m3	0.5 g/m3	29.7°C
157	Scarborough Beach	Australia	9.0m	Good	0.9 mg/m3	2.0 g/m3	18.9°C
158	Freshwater West	United Kingdom	9.0m	Good	0.9 mg/m3	3.2 g/m3	17.3°C
159	Tiree	United Kingdom	8.9m	Good	0.9 mg/m3	0.8 g/m3	14.4°C
160	Pascuales	Mexico	8.8m	Good	0.9 mg/m3	2.3 g/m3	30.6°C
161	Ichinomiya	Japan	8.7m	Good	1.0 mg/m3	1.7 g/m3	23.6°C
162	Tsurigasaki Beach	Japan	8.7m	Good	1.0 mg/m3	1.7 g/m3	23.6°C
163	Newgale	United Kingdom	8.6m	Good	1.0 mg/m3	4.1 g/m3	17.0°C
164	Whitesands Bay	United Kingdom	8.6m	Good	1.0 mg/m3	4.1 g/m3	16.4°C
165	Lahinch	Ireland	8.3m	Good	1.0 mg/m3	18.6 g/m3	15.3°C
166	Bocas del Toro	Panama	8.2m	Good	1.1 mg/m3	0.8 g/m3	29.9°C
167	Bude Summerleaze	United Kingdom	8.2m	Good	1.1 mg/m3	1.2 g/m3	17.3°C
168	Widemouth Bay	United Kingdom	8.2m	Good	1.1 mg/m3	1.2 g/m3	17.5°C
169	Jeffreys Bay	South Africa	8.1m	Good	1.1 mg/m3	0.4 g/m3	16.9°C
170	Punta de Mita	Mexico	8.1m	Good	1.1 mg/m3	3.9 g/m3	31.0°C
171	Huanchaco	Peru	8.0m	Good	1.1 mg/m3	0.6 g/m3	23.1°C
172	Florianópolis	Brazil	8.0m	Moderate	1.1 mg/m3	1.9 g/m3	18.4°C
173	G-Land	Indonesia	8.0m	Moderate	1.1 mg/m3	0.8 g/m3	25.6°C
174	Brimms Ness	United Kingdom	7.8m	Moderate	1.1 mg/m3	0.9 g/m3	13.7°C
175	Dunnet Bay	United Kingdom	7.8m	Moderate	1.1 mg/m3	0.9 g/m3	13.3°C
176	Thurso East	United Kingdom	7.8m	Moderate	1.1 mg/m3	0.9 g/m3	13.1°C
177	Medewi	Indonesia	7.6m	Moderate	1.2 mg/m3	1.2 g/m3	25.6°C
178	Ubatuba	Brazil	7.6m	Moderate	1.2 mg/m3	2.2 g/m3	24.2°C
179	Ericeira	Portugal	7.6m	Moderate	1.2 mg/m3	1.1 g/m3	18.2°C
180	Ribeira d'Ilhas	Portugal	7.6m	Moderate	1.2 mg/m3	1.1 g/m3	18.3°C
181	Wrightsville Beach	United States	7.5m	Moderate	1.2 mg/m3	6.2 g/m3	25.4°C
182	Lakey Peak	Indonesia	7.4m	Moderate	1.2 mg/m3	1.3 g/m3	27.4°C
183	Machrihanish	United Kingdom	7.4m	Moderate	1.2 mg/m3	1.3 g/m3	14.4°C
184	Cimaja	Indonesia	7.1m	Moderate	1.3 mg/m3	1.0 g/m3	26.3°C
185	Pantín	Spain	7.0m	Moderate	1.3 mg/m3	0.4 g/m3	15.6°C
186	Inch Beach	Ireland	7.0m	Moderate	1.3 mg/m3	0.5 g/m3	15.1°C
187	Anchor Point	Morocco	7.0m	Moderate	1.4 mg/m3	2.0 g/m3	20.1°C
188	Taghazout	Morocco	7.0m	Moderate	1.4 mg/m3	2.0 g/m3	20.1°C
189	Raglan	New Zealand	6.7m	Moderate	1.4 mg/m3	27.0 g/m3	14.1°C
190	Rincon	United States	6.7m	Moderate	1.4 mg/m3	1.3 g/m3	22.8°C
191	Saquarema	Brazil	6.6m	Moderate	1.5 mg/m3	1.6 g/m3	22.6°C
192	Maresias	Brazil	6.5m	Moderate	1.5 mg/m3	1.2 g/m3	22.5°C
193	Fraserburgh	United Kingdom	6.5m	Moderate	1.5 mg/m3	0.5 g/m3	13.3°C
194	Pichilemu	Chile	6.4m	Moderate	1.5 mg/m3	0.4 g/m3	14.9°C
195	Sebastian Inlet	United States	6.4m	Moderate	1.5 mg/m3	2.7 g/m3	29.1°C
196	Garopaba	Brazil	6.4m	Moderate	1.6 mg/m3	3.1 g/m3	17.9°C
197	Máncora	Peru	6.3m	Moderate	1.6 mg/m3	4.8 g/m3	27.5°C
198	Narrabeen	Australia	6.3m	Moderate	1.6 mg/m3	0.3 g/m3	19.2°C
199	Dee Why	Australia	6.3m	Moderate	1.6 mg/m3	0.3 g/m3	19.2°C
200	Baisha Bay	Taiwan	6.3m	Moderate	1.6 mg/m3	6.8 g/m3	26.6°C
201	Cannon Beach	United States	6.3m	Moderate	1.6 mg/m3	2.4 g/m3	12.1°C
202	Gordon's Bay	South Africa	6.3m	Moderate	1.6 mg/m3	0.7 g/m3	14.3°C
203	Manorbier	United Kingdom	6.2m	Moderate	1.6 mg/m3	3.8 g/m3	17.5°C
204	Kimmeridge Bay	United Kingdom	6.0m	Moderate	1.7 mg/m3	2.3 g/m3	18.9°C
205	Santa Cruz	Portugal	6.0m	Moderate	1.7 mg/m3	0.5 g/m3	17.8°C
206	Piha	New Zealand	6.0m	Moderate	1.7 mg/m3	13.1 g/m3	14.8°C
207	Mount Maunganui	New Zealand	6.0m	Moderate	1.7 mg/m3	2.9 g/m3	14.6°C
208	Dover	United Kingdom	5.7m	Moderate	1.8 mg/m3	3.1 g/m3	18.8°C
209	Bournemouth	United Kingdom	5.5m	Moderate	1.9 mg/m3	2.6 g/m3	18.7°C
210	Brighton	United Kingdom	5.5m	Moderate	1.9 mg/m3	2.6 g/m3	19.1°C
211	Varkala	India	5.5m	Moderate	1.9 mg/m3	3.4 g/m3	29.0°C
212	Easkey	Ireland	5.3m	Moderate	2.0 mg/m3	0.5 g/m3	14.5°C
213	Chicama	Peru	5.2m	Moderate	2.1 mg/m3	2.0 g/m3	23.3°C
214	Bracklesham Bay	United Kingdom	5.2m	Moderate	2.1 mg/m3	3.5 g/m3	19.0°C
215	Mavericks	United States	5.2m	Moderate	2.1 mg/m3	0.8 g/m3	16.0°C
216	Torres	Brazil	5.0m	Moderate	2.2 mg/m3	3.1 g/m3	16.6°C
217	Santa Cruz	United States	4.9m	Moderate	2.2 mg/m3	0.6 g/m3	17.2°C
218	Imsouane	Morocco	4.9m	Moderate	2.3 mg/m3	1.0 g/m3	19.7°C
219	Lobitos	Peru	4.8m	Moderate	2.3 mg/m3	3.5 g/m3	26.6°C
220	Sandycove	Ireland	4.8m	Moderate	2.4 mg/m3	3.8 g/m3	15.5°C
221	Compton Bay	United Kingdom	4.6m	Moderate	2.5 mg/m3	4.2 g/m3	19.1°C
222	Sandsend	United Kingdom	4.5m	Moderate	2.5 mg/m3	2.0 g/m3	14.6°C
223	Runswick Bay	United Kingdom	4.5m	Moderate	2.5 mg/m3	2.0 g/m3	14.6°C
224	Bamburgh	United Kingdom	4.4m	Moderate	2.6 mg/m3	2.3 g/m3	13.4°C
225	Putsborough	United Kingdom	4.3m	Moderate	2.7 mg/m3	4.4 g/m3	17.3°C
226	Saunton Sands	United Kingdom	4.3m	Moderate	2.7 mg/m3	4.4 g/m3	17.3°C
227	Woolacombe	United Kingdom	4.3m	Moderate	2.7 mg/m3	4.4 g/m3	17.6°C
228	Croyde	United Kingdom	4.3m	Moderate	2.7 mg/m3	4.4 g/m3	17.5°C
229	Seaburn	United Kingdom	4.2m	Moderate	2.8 mg/m3	0.7 g/m3	14.2°C
230	Angourie	Australia	4.2m	Moderate	2.8 mg/m3	0.5 g/m3	20.8°C
231	Cocoa Beach	United States	4.1m	Moderate	2.9 mg/m3	12.2 g/m3	28.7°C
232	Joss Bay	United Kingdom	4.1m	Moderate	2.9 mg/m3	6.3 g/m3	18.7°C
233	Llangennith	United Kingdom	4.1m	Moderate	2.9 mg/m3	5.6 g/m3	17.6°C
234	Caswell Bay	United Kingdom	3.9m	Moderate	3.1 mg/m3	10.0 g/m3	17.8°C
235	Langland Bay	United Kingdom	3.9m	Moderate	3.1 mg/m3	10.0 g/m3	17.8°C
236	Filey	United Kingdom	3.8m	Moderate	3.3 mg/m3	3.0 g/m3	15.4°C
237	Praia do Guincho	Portugal	3.8m	Moderate	3.3 mg/m3	6.3 g/m3	19.4°C
238	Carcavelos	Portugal	3.8m	Moderate	3.3 mg/m3	6.3 g/m3	18.9°C
239	Costa da Caparica	Portugal	3.8m	Moderate	3.3 mg/m3	6.3 g/m3	18.9°C
240	Cayton Bay	United Kingdom	3.6m	Moderate	3.5 mg/m3	4.0 g/m3	15.1°C
241	Scarborough	United Kingdom	3.6m	Moderate	3.5 mg/m3	4.0 g/m3	14.7°C
242	Tynemouth	United Kingdom	3.5m	Moderate	3.6 mg/m3	2.6 g/m3	13.8°C
243	Saltburn-by-the-Sea	United Kingdom	3.5m	Moderate	3.6 mg/m3	2.3 g/m3	14.3°C
244	Matosinhos	Portugal	3.5m	Moderate	3.7 mg/m3	0.7 g/m3	17.7°C
245	New Smyrna Beach	United States	3.3m	Moderate	4.0 mg/m3	2.7 g/m3	27.8°C
246	Eoropie	United Kingdom	3.3m	Moderate	4.0 mg/m3	1.2 g/m3	13.1°C
247	La Union (San Juan)	Philippines	3.2m	Moderate	4.1 mg/m3	1.7 g/m3	30.6°C
248	Kovalam	India	3.1m	Moderate	4.3 mg/m3	2.2 g/m3	28.6°C
249	Dakhla	Morocco	3.0m	Moderate	4.5 mg/m3	2.9 g/m3	21.2°C
250	Outer Banks	United States	2.9m	Reduced	4.7 mg/m3	4.1 g/m3	22.9°C
251	Nihiwatu	Indonesia	2.9m	Reduced	4.8 mg/m3	0.4 g/m3	26.2°C
252	Strandhill	Ireland	2.8m	Reduced	5.0 mg/m3	0.6 g/m3	14.4°C
253	Rockaway Beach	United States	2.8m	Reduced	5.0 mg/m3	1.0 g/m3	18.8°C
254	Rest Bay	United Kingdom	2.7m	Reduced	5.4 mg/m3	21.2 g/m3	17.8°C
255	Unstad	Norway	2.6m	Reduced	5.7 mg/m3	0.4 g/m3	10.9°C
256	Ocean Beach SF	United States	2.4m	Reduced	6.1 mg/m3	12.5 g/m3	18.5°C
257	Folly Beach	United States	2.4m	Reduced	6.3 mg/m3	5.3 g/m3	25.9°C
258	Muizenberg	South Africa	2.4m	Reduced	6.3 mg/m3	0.6 g/m3	14.7°C
259	Bundoran	Ireland	2.2m	Reduced	7.1 mg/m3	1.0 g/m3	14.5°C
260	Elands Bay	South Africa	2.2m	Reduced	7.1 mg/m3	1.4 g/m3	15.0°C
261	Mullaghmore Head	Ireland	2.2m	Reduced	7.1 mg/m3	1.0 g/m3	14.6°C
262	Bloubergstrand	South Africa	2.1m	Reduced	7.7 mg/m3	0.7 g/m3	12.9°C
263	Bolinas	United States	2.0m	Reduced	8.3 mg/m3	21.8 g/m3	19.5°C
264	Sidi Kaouki	Morocco	2.0m	Reduced	8.8 mg/m3	7.0 g/m3	19.2°C
265	Essaouira	Morocco	2.0m	Reduced	8.8 mg/m3	7.0 g/m3	18.0°C
266	Tybee Island	United States	1.9m	Reduced	9.8 mg/m3	7.8 g/m3	26.4°C
267	Portrush	United Kingdom	1.5m	Reduced	17.8 mg/m3	3.8 g/m3	14.7°C

#6Fernando de Noronha

#15Restaurants (Namotu)

#39Gran Canaria/El Confital

#49Fuerteventura/Cotillo

#55Durban Bay of Plenty

#92North Stradbroke Island

#101Reykjanes Peninsula

#154Peniche/Supertubos

#157Scarborough Beach

#162Tsurigasaki Beach

#181Wrightsville Beach

#239Costa da Caparica

#243Saltburn-by-the-Sea

#247La Union (San Juan)

Satellite data from Copernicus Marine and NOAA CoastWatch. Data from 6 October 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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