Climate averages 1991–2020
São Tomé weather
in January.
A warm, wet month: the 4th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in São Tomé: daytime highs average 26.9°C and nights cool to about 24.9°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 135 mm of rain on roughly 24 days, which makes January a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 06 min on an average January day.
The nearest other city in this atlas is Port-Gentil (257 km away). In January its highs average 28.5°C, 1.5°C warmer than São Tomé, with 230 mm of rain.
From January to February, average highs rise by 0.6°C to 27.5°C, and monthly rainfall falls from 135 mm to 115 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
São Tomé 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°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 | 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
January in nearby cities
- Port-Gentil in JanuaryGabon · 257 kmHigh 28.5°C · Low 24.1°C · 230 mm rain
- Libreville in JanuaryGabon · 303 kmHigh 28.6°C · Low 23.9°C · 250 mm rain
- Owendo in JanuaryGabon · 309 kmHigh 29.2°C · Low 23.4°C · 247 mm rain
- Bata in JanuaryEquatorial Guinea · 378 kmHigh 28.6°C · Low 23.7°C · 164 mm rain
- Malabo in JanuaryEquatorial Guinea · 443 kmHigh 28.3°C · Low 25.8°C · 52 mm rain
- Kribi in JanuaryCameroon · 456 kmHigh 27.9°C · Low 24.7°C · 96 mm rain
- Ciudad de la Paz in JanuaryEquatorial Guinea · 476 kmHigh 28.3°C · Low 20.2°C · 138 mm rain
- Ogbia in JanuaryNigeria · 486 kmHigh 31.5°C · Low 23.9°C · 76 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.