Climate averages 1991–2020
Castries weather
in April.
A hot, fairly dry month: the 7th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Castries: daytime highs average 28.4°C and nights cool to about 24.0°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 36 mm of rain on roughly 12 days, which makes April a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 26 min on an average April day.
The nearest other city in this atlas is Fort-de-France (68 km away). In April its highs average 28.1°C, about as warm as Castries, with 38 mm of rain.
From April to May, average highs rise by 0.6°C to 29.0°C, and monthly rainfall rises from 36 mm to 47 mm.
The annual picture
April 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 | 27.7°C23.5°C | 23.5°C | 26 | 9.8 | 12.012 h |
| April, selected | 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
April in nearby cities
- Fort-de-France in AprilMartinique · 68 kmHigh 28.1°C · Low 24.9°C · 38 mm rain
- Kingstown in AprilSaint Vincent and the Grenadines · 96 kmHigh 27.9°C · Low 25.6°C · 33 mm rain
- Roseau in AprilDominica · 151 kmHigh 27.0°C · Low 24.7°C · 29 mm rain
- Bridgetown in AprilBarbados · 179 kmHigh 27.7°C · Low 25.2°C · 30 mm rain
- Saint George's in AprilGrenada · 231 kmHigh 27.7°C · Low 25.6°C · 31 mm rain
- Basse-Terre in AprilGuadeloupe · 236 kmHigh 28.8°C · Low 25.0°C · 30 mm rain
- Saint John’s in AprilAntigua and Barbuda · 359 kmHigh 27.2°C · Low 24.6°C · 33 mm rain
- Port of Spain in AprilTrinidad and Tobago · 374 kmHigh 29.0°C · Low 25.3°C · 23 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.