Green Man Weather: 2026 Recap, 2027 Outlook
Crickhowell, UK
20 Aug 2026 to 23 Aug 2026
Plan your visit
- Location
- Crickhowell, UK
- Music
- Indie · Boutique
- Camping
- On-site camping available
Glanusk Park in the Brecon Beacons. Valley location traps moisture and the stream through the site can rise quickly after heavy rain. Mid-August Welsh weather is changeable.
Why this score
The score combines these four event-window quality factors. Safety guidance and packing advice are shown separately.
- Quality factor
Rain and ground
6 mm event rain, 1.5 mm/day average, 4 mm peak day, 6 mm prior seven days
HelpingMinor effectFull confidenceEvent rain, antecedent saturation and the wettest day determine how quickly the ground deteriorates.
- Quality factor
Temperature
14°C mean, 9°C low, 22°C peak, 0 consecutive days over 35°C, 73% humidity
NeutralSecondary limiterFull confidenceDaytime comfort, overnight camping temperatures and cumulative heat shape the whole event experience.
- Quality factor
Atmosphere
Sunshine unavailable, 0 storm days of 4
NeutralMinor effectPartial confidenceSunshine changes outdoor comfort, while thunderstorms directly interrupt stages and force shelter.
- Quality factor
Wind
48 km/h peak gust
LimitingMain limiterFull confidencePeak gusts affect camping comfort and the ability of stages and temporary structures to operate.
Comparison is building for this festival.
20-year distribution
Last 5 years
What actually happened
2026-08-20 to 2026-08-23166 candidates with availability matching Green Man · 1 job posted
166 candidates
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Pack for it
Tuned to the forecast- Wellies you don't mind writing off
- Dry bag for your phone
- Spare socks, more than you think
- Reusable water bottle
- Portable charger
Frequently asked questions
How often is this page updated?
Forecasts refresh every six hours near confirmed festival dates. Stored event weather updates daily. Historical comparisons appear when enough records are available.
What does the conditions score mean for Green Man?
A single 0-100 rating of how Green Man's event window is shaping up. Rain or dust and ground, temperature, atmosphere and wind contribute as four equal factor groups. Their multipliers are multiplied into one event-window quality score. The festival's primary risk selects the first group's rain-and-ground or dust-and-ground interpretation and shapes the label and historical comparison. It does not give any group extra weight.
Where does the weather data come from?
Open-Meteo, an open weather API that blends multiple national weather services plus ERA5 archive data going back to 2006. The same data powers many outdoor apps.
Does the historical comparison mean the festival ran every year?
No. Historical comparisons use available weather records for the location and event window, including years when the festival did not run. Coverage varies by festival, and a comparison appears only when enough records are available.
What should I pack for Green Man 2026?
When a forecast is available, the "Pack for it" section uses expected temperatures, rain and the festival’s main weather risks. Before then, check the organiser’s camping and entry guidance.