Climate averages 1991–2020
Castries weather
in March.
A warm, fairly dry month: the 9th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a warm month in Castries: daytime highs average 27.7°C and nights cool to about 23.5°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 26 mm of rain on roughly 10 days, which makes March a fairly dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 03 min on an average March day.
The nearest other city in this atlas is Fort-de-France (68 km away). In March its highs average 27.5°C, about as warm as Castries, with 26 mm of rain.
From March to April, average highs rise by 0.6°C to 28.4°C, and monthly rainfall rises from 26 mm to 36 mm.
The annual picture
March 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 | 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, selected | 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
March in nearby cities
- Fort-de-France in MarchMartinique · 68 kmHigh 27.5°C · Low 24.3°C · 26 mm rain
- Kingstown in MarchSaint Vincent and the Grenadines · 96 kmHigh 27.2°C · Low 25.0°C · 23 mm rain
- Roseau in MarchDominica · 151 kmHigh 26.3°C · Low 24.2°C · 19 mm rain
- Bridgetown in MarchBarbados · 179 kmHigh 27.1°C · Low 24.6°C · 23 mm rain
- Saint George's in MarchGrenada · 231 kmHigh 27.0°C · Low 25.0°C · 26 mm rain
- Basse-Terre in MarchGuadeloupe · 236 kmHigh 28.0°C · Low 24.3°C · 19 mm rain
- Saint John’s in MarchAntigua and Barbuda · 359 kmHigh 26.5°C · Low 24.1°C · 21 mm rain
- Port of Spain in MarchTrinidad and Tobago · 374 kmHigh 28.3°C · Low 24.7°C · 19 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.