Climate averages 1991–2020
Castries weather
in January.
A warm, fairly dry month: the coolest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Castries: daytime highs average 26.9°C and nights cool to about 23.4°C. By daytime temperature it is the coolest month of the year.
Expect about 31 mm of rain on roughly 12 days, which makes January a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 24 min on an average January day.
The nearest other city in this atlas is Fort-de-France (68 km away). In January its highs average 26.8°C, about as warm as Castries, with 41 mm of rain.
From January to February, average highs rise by 0.3°C to 27.3°C, and monthly rainfall falls from 31 mm to 21 mm.
The annual picture
January 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
Castries climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 26.9°C23.4°C | 23.4°C | 31 | 11.8 | 11.411 h |
| February | 27.3°C23.3°C | 23.3°C | 21 | 8.9 | 11.712 h |
| March | 27.7°C23.5°C | 23.5°C | 26 | 9.8 | 12.012 h |
| April | 28.4°C24.0°C | 24.0°C | 36 | 11.5 | 12.412 h |
| May | 29.0°C24.8°C | 24.8°C | 47 | 12.5 | 12.813 h |
| June | 28.8°C25.0°C | 25.0°C | 65 | 15.1 | 12.913 h |
| July | 28.7°C24.8°C | 24.8°C | 83 | 20.3 | 12.913 h |
| August | 28.9°C25.0°C | 25.0°C | 99 | 20.7 | 12.613 h |
| September | 29.1°C25.2°C | 25.2°C | 104 | 19.4 | 12.212 h |
| October | 28.6°C24.9°C | 24.9°C | 119 | 20.9 | 11.812 h |
| November | 27.8°C24.5°C | 24.5°C | 102 | 18.8 | 11.511 h |
| December | 27.3°C24.0°C | 24.0°C | 42 | 13.0 | 11.311 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
January in nearby cities
- Fort-de-France in JanuaryMartinique · 68 kmHigh 26.8°C · Low 24.3°C · 41 mm rain
- Kingstown in JanuarySaint Vincent and the Grenadines · 96 kmHigh 26.8°C · Low 25.0°C · 36 mm rain
- Roseau in JanuaryDominica · 151 kmHigh 25.9°C · Low 24.2°C · 31 mm rain
- Bridgetown in JanuaryBarbados · 179 kmHigh 26.6°C · Low 24.6°C · 36 mm rain
- Saint George's in JanuaryGrenada · 231 kmHigh 26.5°C · Low 24.9°C · 47 mm rain
- Basse-Terre in JanuaryGuadeloupe · 236 kmHigh 27.3°C · Low 24.4°C · 30 mm rain
- Saint John’s in JanuaryAntigua and Barbuda · 359 kmHigh 26.2°C · Low 24.2°C · 32 mm rain
- Port of Spain in JanuaryTrinidad and Tobago · 374 kmHigh 27.4°C · Low 24.4°C · 46 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 Castries) is explained once on the Castries year overview and on the Sources, method and limits page.