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St Helena weather in May 2025
Expect 21°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in St Helena in May. Check more long-term weather averages for St Helena in May before you book your next holiday to St Helena & Islands in 2025/2026.
- 2121°C max day temperature
- 1414 days with some rainfall
- 1717°C min night temperature
- 1111 hours of daylight per day
- 0No heat & humidity
- 7171 mm of monthly rainfall
- 99 (Very High) UV index
- 2424°C sea temperature
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The May weather guide for St Helena & Islands (St Helena) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
How hot is it in St Helena in May?
Daytime temperatures usually reach 21°C in St Helena in May, falling to 17°C at night.
How warm is the sea around St Helena in May?
The average sea temperature around St Helena in May is 24°C.
Does it ever rain in St Helena in May?
There are usually 14 days with some rain in St Helena in May and the average monthly rainfall is 71mm.
St Helena May sunrise & sunset times
Browse the sunrise and sunset times for St Helena in May 2025. Select a month to view St Helena sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Thursday, 1st May 2025 | 06:34 | 18:05 |
Friday, 16th May 2025 | 06:38 | 18:00 |
Saturday, 31st May 2025 | 06:43 | 17:58 |
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