Roseau weather in May
May in Roseau: hot, dry, with clean air — an excellent time to visit.
#5 of 12 months in Roseau · #244 of 604 destinations to visit in May · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Roseau climate normals — May
| Daytime high | 28°C / 82°F | 🥵 hot |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Feels like (high) | 31°C / 88°F | |
| Rainfall | 28 mm / 1.1 in | ☀️ dry |
| Rainy days | 7 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 23°C / 73°F | |
| Sunshine | 11.7 h/day | |
| Daylight | 12.8 h | |
| Wind | 31 km/h / 19 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Roseau?
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Roseau in May — FAQ
- Is May a good time to visit Roseau?
- May in Roseau: hot, dry, with clean air — an excellent time to visit. It ranks #5 of 12 months for Roseau on SeasonMap's comfort score (84/100).
- What is the weather like in Roseau in May?
- In May, Roseau averages a daily high of 27.8°C and a low of 25.7°C, with about 28.3 mm of rain over roughly 7 rainy days.
- What is the air quality in Roseau in May?
- Roseau has a mean US Air Quality Index of about 48 in May.