- Temperature
- 21–29°C
- Snowfall
- Not applicable - tropical climate
Updated July 2026 · Sources cited: weather-and-climate.com, weather-atlas.com
Good to know
Good to Know
- February to April offers the driest conditions and is the best time to visit.
- July to November brings heavy rainfall and increased risk of tropical storms; hurricane season peaks August to October.
- Temperatures remain constant year-round (27–29°C (84°F) / 81–84°F), so season choice is driven by rainfall preferences rather than temperature.
- The west coast (where Roseau sits) is more sheltered from exposure than the eastern side.
- Bring light, tropical-friendly clothes year-round, a raincoat for sudden showers, and sunscreen for consistent UV exposure.
Overview
Tropical rainforest climate with high humidity and significant rainfall year-round. Minimal seasonal temperature variation.
Rainfall
- Driest Month
- March
- Driest Period
- February to April
- Wettest Month
- October
- Wettest Period
- July to November
- Annual Total Mm
- 1735
- Driest Month Mm
- 87
- Wettest Month Mm
- 146
- Annual Total Inches
- 68
- Driest Month Inches
- 3.43
- Wettest Month Inches
- 5.7
Snowfall
Not applicable - tropical climate
Temperature
- Coolest Months
- January to March
- Peak Warmth Months
- May to September
Coolest Range
- Low Celsius
- 21
- High Celsius
- 27
- Low Fahrenheit
- 70
- High Fahrenheit
- 81
Peak Warmth Range
- Low Celsius
- 24
- High Celsius
- 29
- Low Fahrenheit
- 75
- High Fahrenheit
- 84
Water Temperature
- Coolest Month
- February
- Warmest Month
- September
- Coolest Celsius
- 26
- Warmest Celsius
- 28.9
- Coolest Fahrenheit
- 79
- Warmest Fahrenheit
- 84
- Annual Average Celsius
- 27.5
- Annual Average Fahrenheit
- 81.5
AI-generated estimateData refreshed July 2026
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Roseau
Data last updated July 2026 · Verify anything important.