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Block Island weather in August 2025
Expect 26°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Block Island in August. Check more long-term weather averages for Block Island in August before you book your next holiday to Rhode Island in 2025/2026.
- 26°C max day temperature
26 - 8 hours of sunshine per day
- 9 days with some rainfall
9 - 17°C min night temperature
17 - 14 hours of daylight per day
14 - Low heat & humidity
L - 105 mm of monthly rainfall
105 - 8 (Very High) UV index
8 - 20°C sea temperature
20
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Recommended for Rhode Island
The August weather guide for Rhode Island (Block Island) 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)
More about the USA
How hot is it in Block Island in August?
Daytime temperatures usually reach 26°C in Block Island in August with low heat and humidity, falling to 17°C at night.
How sunny is it in Block Island in August?
There are normally 8 hours of bright sunshine each day in Block Island in August - that's 58% of daylight hours.
How warm is the sea around Block Island in August?
The average sea temperature around Block Island in August is 20°C.
Does it rain in Block Island in August?
There are usually 9 days with some rain in Block Island in August and the average monthly rainfall is 105mm.
What is the chance of a hurricane in Block Island in August?
On average less than 1 day in August in Block Island is likely to be affected by the passage of one or more tropical storms.
Block Island August sunrise & sunset times
Browse the sunrise and sunset times for Block Island in August 2025. Select a month to view Block Island sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Friday, 1st August 2025 | 04:42 | 19:03 |
| Saturday, 16th August 2025 | 04:57 | 18:43 |
| Sunday, 31st August 2025 | 05:12 | 18:20 |
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