St. George's weather in December
December in St. George's: hot, a little rain, with clean air — an excellent time to visit.
#6 of 12 months in St. George's · #138 of 604 destinations to visit in December · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
St. George's climate normals — December
| Daytime high | 27°C / 81°F | 🥵 hot |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Feels like (high) | 30°C / 86°F | |
| Rainfall | 68 mm / 2.7 in | 🌦 some rain |
| Rainy days | 17 days | |
| Humidity | 78% | 💦 very humid |
| Dew point | 22°C / 72°F | |
| Sunshine | 10.1 h/day | |
| Daylight | 11.4 h | |
| Wind | 30 km/h / 18 mph | |
| Air quality (US AQI) | 44 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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St. George's in December — FAQ
- Is December a good time to visit St. George's?
- December in St. George's: hot, a little rain, with clean air — an excellent time to visit. It ranks #6 of 12 months for St. George's on SeasonMap's comfort score (82/100).
- What is the weather like in St. George's in December?
- In December, St. George's averages a daily high of 27.3°C and a low of 25.7°C, with about 68 mm of rain over roughly 16.8 rainy days.
- What is the air quality in St. George's in December?
- St. George's has a mean US Air Quality Index of about 44 in December.