Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 28.5 °C | 28.8 °C | 26 days | Unfavourable season |
| February | 29.1 °C | 29.1 °C | 24 days | Unfavourable season |
| March | 29.3 °C | 29.4 °C | 24 days | Unfavourable season |
| April | 29.2 °C | 29.4 °C | 24 days | Unfavourable season |
| May | 28.5 °C | 28.8 °C | 23 days | Unfavourable season |
| June | 27.6 °C | 27.3 °C | 13 days | Ideal — one of the best times of year |
| July | 27 °C | 26.4 °C | 14 days | Possible, with trade-offs |
| August | 26.9 °C | 26 °C | 19 days | Unfavourable season |
| September | 27.2 °C | 26.5 °C | 24 days | Unfavourable season |
| October | 27.4 °C | 27.3 °C | 27 days | Unfavourable season |
| November | 27.8 °C | 27.9 °C | 26 days | Unfavourable season |
| December | 28.1 °C | 28.3 °C | 28 days | Unfavourable season |
Nearby in April
Before you go
Three things to check once you have picked your dates.
Entry
No visa needed for stays of up to 15 days. Passport valid until your return date. A 20-euro entry fee is payable on arrival (also in US dollars or local currency).
For a British passport, per the UK Foreign Office on 10 December 2025. Rules change: check before booking.
Safety
No specific restrictions
Usual precautions apply.
Official advice updated 10 December 2025
Health
Vaccines · typhoid recommended for most travellers; hepatitis A and hepatitis B if you are not already vaccinated; rabies depending on activities and areas visited. Routine vaccines up to date (measles in particular).
Yellow fever · No yellow fever locally, vaccine not recommended. Certificate required only if you arrive from a country with yellow fever risk.
Malaria · Present. Areas: All. Preventive medication recommended: Atovaquone-proguanil, doxycycline, mefloquine, tafenoquine — prescribed before departure.
Per the CDC (page reviewed 25 August 2026); see a travel clinic a few weeks before departure.
Beau Fixe is not a safety or health authority. These notes summarise dated public texts and link to their source: France Diplomatie (Licence Ouverte 2.0), Foreign, Commonwealth & Development Office (gov.uk, Open Government Licence v3.0), Centers for Disease Control and Prevention (Source: CDC). Only the competent authorities are authoritative.
FAQ
Can you swim in São Tomé in April?
The sea averages 29.4°C in April — yes, pleasant swimming.
How hot is São Tomé in April?
Expect 29.2°C in the afternoon and 25.6°C at night, averaged over the last 10 years.
Does it rain a lot in São Tomé in April?
Around 24 days with rain (≥ 1 mm) in the month — 79% of days.