Roseau, Dominica Weather
Roseau hourly forecast: next 24 hours
Today's high of 82°F (28°C) is right in line with the typical July high of 83°F (28°C).
Current conditions in detail
Roseau weather tomorrow (Saturday, July 18)
Tomorrow in Roseau looks patchy rain nearby, with a high of 83° and an overnight low of 80°. There is a 49% chance of rain - plan accordingly. Winds top out near 20 mph, and the UV index reaches 11 (extreme).
Roseau 14-day forecast
About the weather in Roseau
Roseau has a tropical wet-and-dry climate, marked by year-round warmth split between a rainy season and a pronounced dry season. Average daytime highs range from about 80°F (26°C) in February to around 85°F (29°C) in September, and the city records roughly 222 days of measurable precipitation a year.
Roseau weather: quick facts
- Hottest month: September - highs near 85°F (29°C)
- Coldest month: February - highs near 80°F (26°C)
- Record high: 90°F (32°C) · Record low: 69°F (20°C) (2015–2024)
- Wettest month: September (19 rainy days) · Sunniest: April (11.8 h sun/day)
- Climate type: tropical wet-and-dry - year-round warmth split between a rainy season and a pronounced dry season
Temperatures through the year
The warmest stretch of the year centers on September. Highs average 85°F (29°C) and overnight lows stay near 78°F (26°C). The coolest month is February, with typical highs of 80°F (26°C) and lows around 74°F (23°C). Based on 2015–2024 weather data, temperatures have reached as high as 90°F (32°C) and dropped as low as 69°F (20°C).
Rain, sun and snow
September is usually the wettest month. It brings about 5.5 inches (139 mm) of rain over 19 days, while April is the driest. April brings the most sunshine, averaging 11.8 hours of sun a day.
Season by season
March through May
March through May in Roseau runs hot, with daytime highs averaging 82°F (28°C) and nights around 76°F (24°C); expect showers on roughly 49 days across the season.
June through August
June through August in Roseau brings hot afternoons, with daytime highs averaging 84°F (29°C) and nights around 78°F (25°C); expect showers on roughly 64 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
September through November
September through November in Roseau runs hot, with daytime highs averaging 84°F (29°C) and nights around 78°F (25°C); expect showers on roughly 60 days across the season.
December through February
December through February in Roseau is mild and warm, with daytime highs averaging 80°F (27°C) and nights around 75°F (24°C); expect showers on roughly 48 days across the season.
Average temperatures in Roseau by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 80° | 74° | 15 | 2.5 in | 10.8 h/day | 78% |
| February | 80° | 74° | 15 | 2.5 in | 11.0 h/day | 78% |
| March | 80° | 74° | 16 | 2.7 in | 11.5 h/day | 78% |
| April | 82° | 75° | 18 | 2.2 in | 11.8 h/day | 79% |
| May | 83° | 77° | 16 | 2.3 in | 11.5 h/day | 79% |
| June | 83° | 78° | 19 | 3.3 in | 11.3 h/day | 81% |
| July | 83° | 78° | 23 | 5.0 in | 11.3 h/day | 83% |
| August | 84° | 78° | 22 | 4.8 in | 11.2 h/day | 83% |
| September | 85° | 78° | 19 | 5.5 in | 11.0 h/day | 82% |
| October | 84° | 78° | 20 | 4.5 in | 10.6 h/day | 82% |
| November | 83° | 77° | 21 | 5.0 in | 10.3 h/day | 82% |
| December | 81° | 75° | 18 | 3.2 in | 10.5 h/day | 80% |