Capital city in Água Grande, Sao Tome and Principe
São Tomé weather by month and the best time to visit
When to go to São Tomé
Jun–Sep (gravana) is the drier, cooler season. Oct–May is wet and humid; turtle nesting runs roughly Nov–Feb.
São Tomé weather by month
Average daily high, rainfall and conditions.
- Jan27°130 mm
- Feb27°119 mm
- Mar27°167 mm
- Apr27°176 mm
- May27°127 mm
- Jun25°44 mm
- Jul24°22 mm
- Aug25°20 mm
- Sep25°41 mm
- Oct26°114 mm
- Nov26°158 mm
- Dec26°134 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 27°C80°F | 26°C79°F | 130 mm | 83% | Pleasant |
| February | 27°C81°F | 26°C80°F | 119 mm | 83% | Pleasant |
| March | 27°C81°F | 27°C80°F | 167 mm | 83% | Rainy |
| April | 27°C81°F | 27°C80°F | 176 mm | 83% | Rainy |
| May | 27°C80°F | 26°C78°F | 127 mm | 85% | Pleasant |
| June | 25°C77°F | 24°C76°F | 44 mm | 83% | Pleasant |
| July | 24°C76°F | 23°C74°F | 22 mm | 82% | Pleasant |
| August | 25°C76°F | 24°C74°F | 20 mm | 82% | Pleasant |
| September | 25°C78°F | 24°C76°F | 41 mm | 82% | Pleasant |
| October | 26°C79°F | 25°C77°F | 114 mm | 83% | Pleasant |
| November | 26°C79°F | 25°C78°F | 158 mm | 85% | Pleasant |
| December | 26°C80°F | 26°C78°F | 134 mm | 84% | Pleasant |
Quick answers
What is the best month to visit São Tomé?
Jun–Sep. Jun–Sep (gravana) is the drier, cooler season. Oct–May is wet and humid; turtle nesting runs roughly Nov–Feb.
When is the rainy season in São Tomé?
Rain peaks in April with about 176 mm. Months with 150 mm or more: Mar–Apr, Nov.
What is the hottest month in São Tomé?
March, with average highs of 27°C (81°F).
How cold does São Tomé get?
The coolest nights are in July, averaging 23°C (74°F).
More about São Tomé
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Sources
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 0.7°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.