Climate averages 1991–2020
São Tomé weather
in August.
A warm, very dry month: the 11th warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in São Tomé: daytime highs average 25.0°C and nights cool to about 23.3°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 14 mm of rain on roughly 3 days, which makes August a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 08 min on an average August day.
The nearest other city in this atlas is Port-Gentil (257 km away). In August its highs average 26.8°C, 1.8°C warmer than São Tomé, with 6.9 mm of rain.
From August to September, average highs rise by 0.5°C to 25.5°C, and monthly rainfall rises from 14 mm to 46 mm.
The annual picture
August 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 | 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, selected | 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
August in nearby cities
- Port-Gentil in AugustGabon · 257 kmHigh 26.8°C · Low 22.6°C · 6.9 mm rain
- Libreville in AugustGabon · 303 kmHigh 27.4°C · Low 22.8°C · 35 mm rain
- Owendo in AugustGabon · 309 kmHigh 28.2°C · Low 22.5°C · 27 mm rain
- Bata in AugustEquatorial Guinea · 378 kmHigh 26.8°C · Low 22.7°C · 96 mm rain
- Malabo in AugustEquatorial Guinea · 443 kmHigh 26.5°C · Low 24.0°C · 431 mm rain
- Kribi in AugustCameroon · 456 kmHigh 25.8°C · Low 23.2°C · 275 mm rain
- Ciudad de la Paz in AugustEquatorial Guinea · 476 kmHigh 26.9°C · Low 19.8°C · 139 mm rain
- Ogbia in AugustNigeria · 486 kmHigh 27.4°C · Low 22.9°C · 242 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.