When to go · São Tomé
São Tomé in September
Great month. Dry; humid on the coast.
Key facts
- Verdict
- Great
- Temperature
- 28°C (82°F)82°F (28°C) / 22°C (72°F)72°F (22°C)
- average high / low
- Rain days
- 7
- Crowds
- Medium
- São Tomé and Príncipe overall
- Prices
- Medium
- São Tomé and Príncipe overall
Verdict
Dry; humid on the coast.
All twelve months in one grid — weather, crowds and prices, with gaps left as unknown.
Is another month better than September?
No other month rates higher than September for São Tomé in this guide.
Weather in September
- São ToméHighs around 28 °C (82 °F), lows around 22 °C (72 °F), rain on about 7 daysHighs around 82 °F (28 °C), lows around 72 °F (22 °C), rain on about 7 days
- São Tomé north and east, São Tomé and Príncipe · São Tomé city, Guadalupe, Lagoa Azulbest weather
Drier and sunnier in the rain shadow; gravana (June–September) is cooler and cloudy-bright; a short dry gravanito around December–January.
- São Tomé south and west, Obo forest, São Tomé and Príncipe · Porto Alegre, Ribeira Peixe, Obo, Pico Cão Grandefine
Among the wettest places in Africa — several metres of rain a year; even the dry season brings showers.
Gravana season
Least rain, cooler nights and the best month for the hills and beaches.
Watch: Overcast and windy some days; book ahead as beds are few.
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Armed Forces Day
6 September · Nationwide
Public holiday, quiet town (check).
Crowds and prices
- Crowds · São Tomé and Príncipe overall
- Medium
- Prices · São Tomé and Príncipe overall
- Medium
São Tomé and Príncipe overall: End of gravana; still good for trekking.
Compare two months
Weather, crowds and prices for any two months in São Tomé, side by side.
Verdict
Sep: Great
Jun: Great
Daytime high
Sep: 28 °C (82 °F)82 °F (28 °C)
Jun: 28 °C (82 °F)82 °F (28 °C)
Night low
Sep: 22 °C (72 °F)72 °F (22 °C)
Jun: 22 °C (72 °F)72 °F (22 °C)
Rain days
Sep: 7
Jun: 5 (better)
Crowds
Sep: Medium
Jun: Medium
Prices
Sep: Medium
Jun: Medium
Festivals listed
Sep: 1
Jun: 0
September: Dry; humid on the coast.
June: Gravana dry season starts; cooler.
São Tomé: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.