Roseau weather in August 2025

Expect 31°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Roseau in August. Check more long-term weather averages for Roseau in August before you book your next holiday to Dominica in 2025/2026.

  • 31°C maximum daytime temperature in August in Roseau31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 20 days with some rainfall in August in Roseau20
    20 days with some rainfall
  • 24°C minimum night-time temperature in August in Roseau24
    24°C min night temperature
  • 13 hours of daylight per day in August in Roseau13
    13 hours of daylight per day
  • Very high heat & humidity in August in RoseauVH
    Very High heat & humidity
  • 246 mm monthly rainfall in August in Roseau246
    246 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Roseau11
    11+ (Extreme) UV index
  • 29°C sea temperature in August in Roseau29
    29°C sea temperature

More about Roseau

Roseau by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Dominica

Marella Cruises: up to 5% off ocean cruises

  • Book online & save up to 5% on Marella Cruises
  • Discount varies by season. Book online with TUI
  • Destinations across the Med, Caribbean & USA
Go to Marella Cruises deal >>

View all Marella Cruises offers

Marella CruisesCruise deal finder

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.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

How hot is it in Roseau in August?

Daytime temperatures usually reach 31°C in Roseau in August with very high heat and humidity, falling to 24°C at night.

How sunny is it in Roseau in August?

There are normally 8 hours of bright sunshine each day in Roseau in August - that's 63% of daylight hours.

How warm is the sea around Roseau in August?

The average sea temperature around Roseau in August is 29°C.

Does it rain in Roseau in August?

There are usually 20 days with some rain in Roseau in August and the average monthly rainfall is 246mm.

What is the chance of a hurricane in Roseau in August?

On average less than 1 day in August in Roseau is likely to be affected by the passage of one or more tropical storms.

Roseau August sunrise & sunset times

Browse the sunrise and sunset times for Roseau in August 2025. Select a month to view Roseau sunrise and sunset times for the next 12 months.

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

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^