Climate averages 1991–2020
Roseau weather
in July.
A hot, moderately wet month: the joint 3rd warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Roseau: daytime highs average 28.0°C and nights cool to about 25.8°C. By daytime temperature it is the joint 3rd warmest of the 12 months.
Expect about 76 mm of rain on roughly 16 days, which makes July a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 56 min on an average July day.
The nearest other city in this atlas is Fort-de-France (85 km away). In July its highs average 28.7°C, 0.7°C warmer than Roseau, with 113 mm of rain.
From July to August, average highs rise by 0.2°C to 28.2°C, and monthly rainfall rises from 76 mm to 99 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Roseau climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.9°C24.2°C | 24.2°C | 31 | 12.0 | 11.311 h |
| February | 25.9°C24.0°C | 24.0°C | 19 | 7.0 | 11.612 h |
| March | 26.3°C24.2°C | 24.2°C | 19 | 6.9 | 12.012 h |
| April | 27.0°C24.7°C | 24.7°C | 29 | 8.3 | 12.512 h |
| May | 27.7°C25.5°C | 25.5°C | 44 | 10.2 | 12.813 h |
| June | 27.9°C25.9°C | 25.9°C | 47 | 10.5 | 13.013 h |
| July, selected | 28.0°C25.8°C | 25.8°C | 76 | 16.4 | 12.913 h |
| August | 28.2°C26.0°C | 26.0°C | 99 | 18.4 | 12.613 h |
| September | 28.3°C26.2°C | 26.2°C | 113 | 17.1 | 12.212 h |
| October | 28.0°C25.9°C | 25.9°C | 118 | 19.1 | 11.812 h |
| November | 27.3°C25.4°C | 25.4°C | 101 | 17.1 | 11.411 h |
| December | 26.5°C24.8°C | 24.8°C | 48 | 14.3 | 11.211 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Fort-de-France in JulyMartinique · 85 kmHigh 28.7°C · Low 25.8°C · 113 mm rain
- Basse-Terre in JulyGuadeloupe · 86 kmHigh 30.0°C · Low 26.4°C · 62 mm rain
- Castries in JulySaint Lucia · 151 kmHigh 28.7°C · Low 24.8°C · 83 mm rain
- Saint John’s in JulyAntigua and Barbuda · 208 kmHigh 28.6°C · Low 26.1°C · 78 mm rain
- Kingstown in JulySaint Vincent and the Grenadines · 239 kmHigh 28.3°C · Low 26.1°C · 120 mm rain
- Basseterre in JulySaint Kitts and Nevis · 264 kmHigh 28.3°C · Low 26.1°C · 74 mm rain
- Bridgetown in JulyBarbados · 310 kmHigh 28.1°C · Low 25.8°C · 117 mm rain
- Saint George's in JulyGrenada · 363 kmHigh 27.7°C · Low 25.8°C · 142 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Roseau) is explained once on the Roseau year overview and on the Sources, method and limits page.