Annual mean 27°C · wettest around March · prevailing wind SE
Warmest
30.8 °C
Coldest
27.0 °C
Wettest
80%
Windiest
4.8 m/s
Prevailing
SE
3.9 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in São Tomé over the whole year is 27°C. November is the hottest month, with highs of about 31°C; August is the coldest, with lows of about 21°C. The rainy (wet) season in São Tomé runs from March to July, peaking in March with a 66% chance of rain on a given day. The dry season is August to December; November is the driest month, at 22%. Winds in São Tomé are highest in September, averaging 3.6 m/s (13 km/h), and lightest in April, at 2.3 m/s (8 km/h). The prevailing wind is from the SE. The clearest skies in São Tomé come in October, when the sky is typically 51% covered; March is the cloudiest month, at 61%.
Month by month São Tomé climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
30°C
25°C
31°C
51%
58%
3.1 m/s
7
69
2
February
30°C
25°C
32°C
40%
59%
2.8 m/s
6
66
1
March
30°C
24°C
32°C
66%
61%
2.5 m/s
5
64
1
April
30°C
24°C
32°C
58%
59%
2.3 m/s
6
66
1
May
29°C
23°C
31°C
61%
59%
2.5 m/s
11
71
2
June
28°C
22°C
29°C
52%
58%
2.8 m/s
25
75
5
July
27°C
22°C
28°C
47%
59%
3.1 m/s
44
74
7
August
28°C
21°C
28°C
36%
54%
3.3 m/s
37
76
6
September
29°C
22°C
29°C
35%
54%
3.6 m/s
32
76
5
October
30°C
23°C
30°C
27%
51%
3.5 m/s
15
76
3
November
31°C
24°C
31°C
22%
56%
3.4 m/s
8
75
2
December
31°C
25°C
31°C
40%
56%
3.3 m/s
8
72
1
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short São Tomé weather by season
Year round, São Tomé has days of about 27°C at their warmest in July, its coolest month, and 31°C in November, its warmest; the coolest hours of the day run from 21°C to 25°C through the year, and the average temperature over the year is 27°C around the clock. Rain is most likely around March and least likely around November. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
São Tomé weather in winterJune to August
High 28°CLow 21°CRain 45%
Winter in São Tomé has typical daily highs of about 28°C and lows of about 21°C, with a 45% chance of rain on a given day.
São Tomé weather in springSeptember to November
High 30°CLow 23°CRain 28%
Spring in São Tomé has typical daily highs of about 30°C and lows of about 23°C, with a 28% chance of rain on a given day.
São Tomé weather in summerDecember to February
High 30°CLow 25°CRain 44%
Summer in São Tomé has typical daily highs of about 30°C and lows of about 25°C, with a 44% chance of rain on a given day.
São Tomé weather in autumnMarch to May
High 29°CLow 24°CRain 61%
Autumn in São Tomé has typical daily highs of about 29°C and lows of about 24°C, with a 61% chance of rain on a given day.
When is the rainy season in São Tomé?
The rainy (wet) season in São Tomé runs from March to July, peaking in March with a 66% chance of rain on a given day. The dry season is August to December; November is the driest month, at 22%.
What time of year is São Tomé windiest?
Winds in São Tomé are highest in September, averaging 3.6 m/s (13 km/h), and lightest in April, at 2.3 m/s (8 km/h). The prevailing wind is from the SE.
What is the average temperature in São Tomé year round?
The average temperature in São Tomé over the whole year is 27°C. November is the hottest month, with highs of about 31°C; August is the coldest, with lows of about 21°C.