São Tomé & Príncipe weather by month & the best time to visit
São Tomé & Príncipe · beach resort · tropical monsoon climate
The best time to visit São Tomé & Príncipe is August — its sunniest month (Sunshine Score 81/100), with July and June close behind. São Tomé & Príncipe averages about 1,591 hours of sunshine a year. Daytime highs around 24°C / 75°F and roughly 37 mm of rain in August.
When is the best time to visit São Tomé & Príncipe?
For sunshine, the best time to visit São Tomé & Príncipe is August, then July and June. The dullest month is March (60/100, 205 mm of rain). The full month-by-month picture is in the table below.
How sunny is São Tomé & Príncipe?
São Tomé & Príncipe isn't a sunny place by world standards: about 1,591 hours of sunshine a year. August (81/100) is noticeably better than March (60). It is the less sunny of the two destinations tracked in São Tomé & Príncipe. The year's 1,722 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 62 | 27° / 81°F | 26° / 79°F | 141 mm | 8 | 30° / 86°F |
| February | 63 | 27° / 81°F | 26° / 79°F | 136 mm | 8 | 30° / 86°F |
| March | 60 | 27° / 81°F | 27° / 81°F | 205 mm | 9 | 31° / 88°F |
| April | 60 | 27° / 81°F | 26° / 79°F | 202 mm | 9 | 31° / 88°F |
| May | 60 | 27° / 81°F | 26° / 79°F | 175 mm | 8 | 30° / 86°F |
| June | 74 | 25° / 77°F | 25° / 77°F | 75 mm | 7 | 29° / 84°F |
| July | 80 | 24° / 75°F | 24° / 75°F | 40 mm | 7 | 28° / 82°F |
| August | 81 | 24° / 75°F | 24° / 75°F | 37 mm | 7 | 27° / 81°F |
| September | 70 | 25° / 77°F | 24° / 75°F | 98 mm | 8 | 27° / 81°F |
| October | 60 | 25° / 77°F | 25° / 77°F | 226 mm | 9 | 28° / 82°F |
| November | 60 | 26° / 79°F | 25° / 77°F | 232 mm | 8 | 28° / 82°F |
| December | 60 | 26° / 79°F | 26° / 79°F | 155 mm | 8 | 29° / 84°F |
Sea temperature in São Tomé & Príncipe by month
The sea off São Tomé & Príncipe is warmest in March at around 31°C / 88°F, and coolest in August at 27°C / 81°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
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São Tomé & Príncipe: questions and answers
What kind of destination is São Tomé & Príncipe?
São Tomé & Príncipe is a beach resort in São Tomé & Príncipe with a tropical monsoon climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does São Tomé & Príncipe get a year?
São Tomé & Príncipe gets about 1,591 hours of sunshine a year, at its best around August.
When is the best time to visit São Tomé & Príncipe?
The sunniest time to visit São Tomé & Príncipe is August, when the Sunshine Score peaks at 81/100 (with July and June close behind). Expect daytime highs around 24°C / 75°F.
What is the least sunny month in São Tomé & Príncipe?
March is the least sunny month in São Tomé & Príncipe, scoring 60/100 with about 205 mm of rain.
What is the sea temperature in São Tomé & Príncipe?
The sea in São Tomé & Príncipe ranges from about 27°C (August) to 31°C (March). Month-by-month sea temperatures are on this page.
How strong is the sun in São Tomé & Príncipe?
The typical midday UV index in São Tomé & Príncipe peaks around 9 (very high) in March, easing to about 7 (high) in June. Month-by-month midday UV values are in the UV column of the table on this page.
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