Weather in St. Lucia (Castries)
What's the weather like in St. Lucia (Castries)?
St. Lucia (Castries) has a moderate climate and moderate rainfall spread across the year. Average daytime highs range from 27°C (81°F) in January to 29°C (84°F) in July, with overnight lows around 24°C (75°F) and 25°C (78°F) respectively.
For comfortable sightseeing temperatures (18–26°C daytime highs), the best months to visit St. Lucia (Castries) are January through March, and December.
Quick facts
- Country
- 🇱🇨 Saint Lucia
- Region
- Caribbean
- Time zone
- America/St_Lucia
- Coordinates
- 14.010, -60.987
Monthly climate
Long-run averages for each month of the year.
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 27°C / 81°F | 24°C / 75°F | 56 mm | 26 | — |
| February | 27°C / 81°F | 24°C / 74°F | 47 mm | 24 | — |
| March | 28°C / 82°F | 24°C / 75°F | 50 mm | 26 | — |
| April | 29°C / 83°F | 24°C / 76°F | 40 mm | 23 | — |
| May | 29°C / 85°F | 25°C / 77°F | 53 mm | 26 | — |
| June | 29°C / 85°F | 25°C / 78°F | 96 mm | 27 | — |
| July | 29°C / 84°F | 25°C / 78°F | 112 mm | 29 | — |
| August | 29°C / 85°F | 26°C / 78°F | 114 mm | 29 | — |
| September | 30°C / 86°F | 26°C / 78°F | 115 mm | 27 | — |
| October | 29°C / 85°F | 26°C / 78°F | 108 mm | 28 | — |
| November | 28°C / 83°F | 25°C / 77°F | 114 mm | 28 | — |
| December | 28°C / 82°F | 25°C / 76°F | 60 mm | 23 | — |
St. Lucia (Castries) by month
Detailed weather for any specific month:
Seasonal patterns to know
Atlantic hurricane season runs June–November (peak August–October). Tropical storms and hurricanes are possible — peak risk is August–October.
Cities with a similar climate to St. Lucia (Castries)
Frequently asked questions
When is the best time to visit St. Lucia (Castries)?
The most comfortable months in St. Lucia (Castries) are usually January, February, December, when average highs sit near 18–26°C (64–79°F) with relatively little rain. See the full month-by-month breakdown for the exact figures.
What is the hottest month in St. Lucia (Castries)?
September is typically the hottest month in St. Lucia (Castries), averaging a high of 30°C (86°F).
What is the coldest month in St. Lucia (Castries)?
February is usually the coldest, with average lows around 24°C (74°F).
Does it snow in St. Lucia (Castries)?
Snow is rare in St. Lucia (Castries); the climate data shows essentially no snowfall across the year.
Live forecast, sunrise/sunset, and more.