Annual mean 27°C · wettest around September · prevailing wind NW
Warmest
33.5 °C
Coldest
28.4 °C
Wettest
88%
Windiest
3.4 m/s
Prevailing
NW
2.7 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
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 Bissau over the whole year is 27°C. April is the hottest month, with highs of about 33°C; January is the coldest, with lows of about 20°C. The rainy (wet) season in Bissau runs from July to October, peaking in September with a 78% chance of rain on a given day. The dry season is November to June; February is the driest month, at 0%. Winds in Bissau are highest in April, averaging 2.4 m/s (9 km/h), and lightest in November, at 1.7 m/s (6 km/h). The prevailing wind is from the NW. The clearest skies in Bissau come in March, when the sky is typically 38% covered; August is the cloudiest month, at 72%.
Month by month Bissau 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
31°C
20°C
29°C
1%
45%
2.3 m/s
34
66
6
February
32°C
21°C
30°C
0%
39%
2.3 m/s
23
63
4
March
33°C
22°C
33°C
1%
38%
2.3 m/s
5
52
1
April
33°C
24°C
34°C
4%
41%
2.4 m/s
1
32
0
May
33°C
25°C
35°C
3%
46%
2.4 m/s
1
29
0
June
31°C
26°C
35°C
38%
58%
2.4 m/s
2
24
0
July
29°C
25°C
33°C
61%
70%
2.1 m/s
2
32
0
August
29°C
25°C
33°C
65%
72%
2.1 m/s
4
34
1
September
30°C
25°C
34°C
78%
67%
1.9 m/s
2
28
0
October
31°C
26°C
36°C
66%
57%
1.8 m/s
0
12
0
November
32°C
24°C
34°C
33%
45%
1.7 m/s
2
31
0
December
31°C
21°C
30°C
2%
39%
2.0 m/s
23
58
5
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 Bissau weather by season
Year round, Bissau has days of about 29°C at their warmest in August, its coolest month, and 33°C in April, its warmest; the coolest hours of the day run from 20°C to 26°C through the year, and the average temperature over the year is 27°C around the clock. Rain is most likely around September and least likely around February. 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.
Bissau weather in winterDecember to February
High 31°CLow 21°CRain 1%
Winter in Bissau has typical daily highs of about 31°C and lows of about 21°C, with a 1% chance of rain on a given day.
Bissau weather in springMarch to May
High 33°CLow 24°CRain 3%
Spring in Bissau has typical daily highs of about 33°C and lows of about 24°C, with a 3% chance of rain on a given day.
Bissau weather in summerJune to August
High 30°CLow 25°CRain 55%
Summer in Bissau has typical daily highs of about 30°C and lows of about 25°C, with a 55% chance of rain on a given day.
Bissau weather in autumnSeptember to November
High 31°CLow 25°CRain 59%
Autumn in Bissau has typical daily highs of about 31°C and lows of about 25°C, with a 59% chance of rain on a given day.
When is the rainy season in Bissau?
The rainy (wet) season in Bissau runs from July to October, peaking in September with a 78% chance of rain on a given day. The dry season is November to June; February is the driest month, at 0%.
What time of year is Bissau windiest?
Winds in Bissau are highest in April, averaging 2.4 m/s (9 km/h), and lightest in November, at 1.7 m/s (6 km/h). The prevailing wind is from the NW.
What is the average temperature in Bissau year round?
The average temperature in Bissau over the whole year is 27°C. April is the hottest month, with highs of about 33°C; January is the coldest, with lows of about 20°C.