Climate averages 1991–2020
São Tomé weather
in April.
A warm, wet month: the 2nd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a warm month in São Tomé: daytime highs average 27.6°C and nights cool to about 25.7°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 130 mm of rain on roughly 19 days, which makes April a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 07 min on an average April day.
The nearest other city in this atlas is Port-Gentil (257 km away). In April its highs average 29.1°C, 1.5°C warmer than São Tomé, with 161 mm of rain.
From April to May, average highs fall by 0.8°C to 26.8°C, and monthly rainfall falls from 130 mm to 119 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
São Tomé climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.9°C24.9°C | 24.9°C | 135 | 23.6 | 12.112 h |
| February | 27.5°C25.4°C | 25.4°C | 115 | 19.4 | 12.112 h |
| March | 27.8°C25.7°C | 25.7°C | 133 | 20.5 | 12.112 h |
| April, selected | 27.6°C25.7°C | 25.7°C | 130 | 18.7 | 12.112 h |
| May | 26.8°C25.2°C | 25.2°C | 119 | 17.0 | 12.112 h |
| June | 25.5°C24.1°C | 24.1°C | 23 | 4.0 | 12.112 h |
| July | 24.9°C23.3°C | 23.3°C | 7.7 | 2.0 | 12.112 h |
| August | 25.0°C23.3°C | 23.3°C | 14 | 2.6 | 12.112 h |
| September | 25.5°C23.8°C | 23.8°C | 46 | 7.8 | 12.112 h |
| October | 25.8°C24.2°C | 24.2°C | 152 | 21.5 | 12.112 h |
| November | 26.1°C24.4°C | 24.4°C | 210 | 25.7 | 12.112 h |
| December | 26.5°C24.6°C | 24.6°C | 174 | 26.1 | 12.112 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
- Port-Gentil in AprilGabon · 257 kmHigh 29.1°C · Low 24.9°C · 161 mm rain
- Libreville in AprilGabon · 303 kmHigh 29.3°C · Low 24.6°C · 261 mm rain
- Owendo in AprilGabon · 309 kmHigh 29.9°C · Low 24.1°C · 255 mm rain
- Bata in AprilEquatorial Guinea · 378 kmHigh 29.3°C · Low 24.1°C · 256 mm rain
- Malabo in AprilEquatorial Guinea · 443 kmHigh 28.9°C · Low 26.1°C · 188 mm rain
- Kribi in AprilCameroon · 456 kmHigh 28.5°C · Low 24.8°C · 246 mm rain
- Ciudad de la Paz in AprilEquatorial Guinea · 476 kmHigh 28.4°C · Low 20.7°C · 260 mm rain
- Ogbia in AprilNigeria · 486 kmHigh 30.4°C · Low 24.6°C · 259 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 São Tomé) is explained once on the São Tomé year overview and on the Sources, method and limits page.