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Dominica weather in August 2025
Expect 31°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Dominica in August based on long-term weather averages. There is usually 20 days with some rainfall and 246 mm of average monthly rainfall in August.
- 31°C max day temperature
31 - 8 hours of sunshine per day
- 20 days with some rainfall
20 - 24°C min night temperature
24 - 13 hours of daylight per day
13 - Very High heat & humidity
VH - 246 mm of monthly rainfall
246 - 11+ (Extreme) UV index
11 - 29°C sea temperature
29
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The August weather guide for Dominica (Roseau) 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.
Top Dominica destinations
Below are average maximum temperatures at popular countries, regions and places in Dominica in August. Select a holiday destination to see more weather parameters.
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Metric (°C / mm) | Imperial (°F / inches)
How hot is it in Dominica in August?
Daytime temperatures usually reach 31°C in Roseau, Dominica in August with very high heat and humidity, falling to 24°C at night.
How sunny is it in Dominica in August?
There are normally 8 hours of bright sunshine each day in Roseau, Dominica in August - that's 63% of daylight hours.
How warm is the sea around Dominica in August?
The average sea temperature around Roseau, Dominica in August is 29°C.
Does it rain in Dominica in August?
There are usually 20 days with some rain in Roseau, Dominica in August and the average monthly rainfall is 246mm.
What is the chance of a hurricane in Dominica in August?
On average less than 1 day in August in Roseau, Dominica is likely to be affected by the passage of one or more tropical storms.
Dominica August sunrise & sunset times
Browse the sunrise and sunset times for Dominica in August 2025. Select a month to view Dominica sunrise and sunset times for the next 12 months. The Dominica sunrise and sunset times shown below are for Roseau.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Friday, 1st August 2025 | 05:48 | 18:36 |
| Saturday, 16th August 2025 | 05:51 | 18:28 |
| Sunday, 31st August 2025 | 05:53 | 18:18 |
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