What's on in São Tomé, São Tomé and Príncipe through the year
São Tomé, São Tomé and Príncipe has 5 curated events through the year — 2 natural spectacles, 1 holiday and 2 seasons. The ones to plan around: Gravana, the dry season (June) and Humpback whales (July).
Updated September 2026 · every event curated and sourced · dates for 2026 where they are announced, the usual window where they are not
São Tomé events and crowds by month
| Month | What starts | Crowds |
|---|---|---|
| January | — | Shoulder season |
| February | — | Shoulder season |
| March | — | Shoulder season |
| April | — | Shoulder season |
| May | — | Shoulder season |
| June | Gravana, the dry season | Busy |
| July | Independence Day, Humpback whales | Busy |
| August | — | Busy |
| September | — | Shoulder season |
| October | — | Quiet |
| November | Sea turtle nesting | Quiet |
| December | Gravanito, the little dry spell | Quiet |
January in São Tomé
São Tomé weather in January →Shoulder season — school holidays in 5 of the markets that fill it, an ordinary month
Nothing new starts in January.
Still on: Sea turtle nesting (1 Nov – 28 Feb (usually)), Gravanito, the little dry spell (15 Dec – 10 Feb (usually))
February in São Tomé
São Tomé weather in February →Shoulder season — school holidays in 2 of the markets that fill it, an ordinary month
Nothing new starts in February.
Still on: Sea turtle nesting (1 Nov – 28 Feb (usually)), Gravanito, the little dry spell (15 Dec – 10 Feb (usually))
March in São Tomé
São Tomé weather in March →Shoulder season — school holidays in 4 of the markets that fill it, an ordinary month
Nothing new starts in March.
April in São Tomé
São Tomé weather in April →Shoulder season — school holidays in 4 of the markets that fill it, an ordinary month
Nothing new starts in April.
May in São Tomé
São Tomé weather in May →Shoulder season — school holidays in 3 of the markets that fill it, an ordinary month
Nothing new starts in May.
June in São Tomé
São Tomé weather in June →Busy — school holidays in 3 of the markets that fill it, one of its best months for weather
- Season
Gravana, the dry season
1 Jun – 15 Sep · usuallyThe cool, dry, often overcast months when the roads to the south of the island are reliable and the humidity finally eases. Mornings can be grey for a week; that is the gravana rather than bad luck.
July in São Tomé
São Tomé weather in July →Busy — Independence Day, school holidays in 5 of the markets that fill it
- Holiday
Independence Day
12 JulNational holidayClosuresThe 12 July holiday marks 1975. Government offices, banks and most shops in the capital close, and the day is marked with music and football rather than a parade. Source ↗
- Nature
Humpback whales
15 Jul – 15 Oct · usuallyWhale seasonHumpbacks come into the Gulf of Guinea to calve during the southern winter and are seen off the island's east and south coasts. Boats run when the sea allows, which in the gravana it usually does.
Still on: Gravana, the dry season (1 Jun – 15 Sep (usually))
August in São Tomé
São Tomé weather in August →Busy — school holidays in 4 of the markets that fill it, one of its best months for weather
Nothing new starts in August.
Still on: Gravana, the dry season (1 Jun – 15 Sep (usually)), Humpback whales (15 Jul – 15 Oct (usually))
September in São Tomé
São Tomé weather in September →Shoulder season — school holidays in 2 of the markets that fill it, an ordinary month
Nothing new starts in September.
Still on: Gravana, the dry season (1 Jun – 15 Sep (usually)), Humpback whales (15 Jul – 15 Oct (usually))
October in São Tomé
São Tomé weather in October →Quiet — school holidays in 4 of the markets that fill it, one of its worst months for weather
Nothing new starts in October.
Still on: Humpback whales (15 Jul – 15 Oct (usually))
November in São Tomé
São Tomé weather in November →Quiet — school holidays in 2 of the markets that fill it, one of its worst months for weather
- Nature
Sea turtle nesting
1 Nov – 28 Feb · usuallyGreen, hawksbill and olive ridley turtles nest on the beaches around the island through the wet months, monitored nightly by the Programa Tato patrols. Watching is guided only and torches are kept off the sand. Source ↗
December in São Tomé
São Tomé weather in December →Quiet — school holidays in 5 of the markets that fill it, one of its worst months for weather
- Season
Gravanito, the little dry spell
15 Dec – 10 Feb · usuallyDry seasonA short break in the middle of the wet season with clearer skies and calmer sea. It is unreliable in both timing and length, but when it lands it is the best diving and boat weather of the first half of the year.
Still on: Sea turtle nesting (1 Nov – 28 Feb (usually))