Climate Insights for Bissau

Guinea-Bissau

Hottest
March
36°C peak96°F peak
Coldest
January
21°C low69°F low
Wettest
August
537 mm rain21.2 in rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Bissau is hot. The average annual temperature is 28°C and approximately 1,630 mm of precipitation falls per year. August is the wettest month, receiving around 537 mm of rainfall. Bissau is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: March, April, February. The coldest months are January, December, February, when temperatures can drop to 21°C.The climate in Bissau is hot. The average annual temperature is 82°F and approximately 64.2 in of precipitation falls per year. August is the wettest month, receiving around 21.2 in of rainfall. Bissau is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: March, April, February. The coldest months are January, December, February, when temperatures can drop to 69°F.

Temperature

0°10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 34°Average: 27°Min: 21°FebMax: 35°Average: 28°Min: 22°MarMax: 36°Average: 28°Min: 23°AprMax: 35°Average: 29°Min: 24°MayMax: 34°Average: 29°Min: 25°JunMax: 32°Average: 28°Min: 26°JulMax: 30°Average: 27°Min: 25°AugMax: 29°Average: 27°Min: 25°SepMax: 30°Average: 27°Min: 25°OctMax: 32°Average: 28°Min: 25°NovMax: 33°Average: 28°Min: 25°DecMax: 34°Average: 27°Min: 21°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°F90°F100°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 93°FAverage: 80°FMin: 69°FFebMax: 95°FAverage: 82°FMin: 71°FMarMax: 96°FAverage: 83°FMin: 73°FAprMax: 96°FAverage: 83°FMin: 75°FMayMax: 93°FAverage: 84°FMin: 77°FJunMax: 90°FAverage: 83°FMin: 78°FJulMax: 85°FAverage: 81°FMin: 77°FAugMax: 85°FAverage: 80°FMin: 77°FSepMax: 86°FAverage: 81°FMin: 76°FOctMax: 89°FAverage: 83°FMin: 77°FNovMax: 92°FAverage: 83°FMin: 76°FDecMax: 93°FAverage: 80°FMin: 71°F
Max
Average
Min

Bissau sees moderate temperature variation throughout the year, ranging from 21°C to 36°C. March is the hottest month, with daytime highs reaching 36°C and an average of 28°C. January is the coolest month, with minimum temperatures around 21°C and an average of 27°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.Bissau sees moderate temperature variation throughout the year, ranging from 69°F to 96°F. March is the hottest month, with daytime highs reaching 96°F and an average of 83°F. January is the coolest month, with minimum temperatures around 69°F and an average of 80°F. On average, daily temperatures fluctuate by about 16°F between overnight lows and afternoon highs.

Precipitation

0mm50mm100mm150mm200mm250mm300mm350mm400mm450mm500mm550mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 0mmFebPrecipitation: 0mmMarPrecipitation: 0mmAprPrecipitation: 0mmMayPrecipitation: 4mmJunPrecipitation: 72mmJulPrecipitation: 444mmAugPrecipitation: 537mmSepPrecipitation: 407mmOctPrecipitation: 149mmNovPrecipitation: 17mmDecPrecipitation: 0mm
Precipitation
0in2in4in6in8in10in12in14in16in18in20in22inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 0inFebPrecipitation: 0inMarPrecipitation: 0inAprPrecipitation: 0inMayPrecipitation: 0.2inJunPrecipitation: 2.8inJulPrecipitation: 17.5inAugPrecipitation: 21.2inSepPrecipitation: 16inOctPrecipitation: 5.9inNovPrecipitation: 0.7inDecPrecipitation: 0in
Precipitation

Bissau is a fairly wet location, receiving approximately 1,630 mm of precipitation annually, which averages out to around 136 mm per month. The wettest month is August, averaging 537 mm of rainfall. July and September also tend to see above-average precipitation. The driest month is March, with just 0 mm. That's 537 mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.Bissau is a fairly wet location, receiving approximately 64.2 in of precipitation annually, which averages out to around 5.4 in per month. The wettest month is August, averaging 21.1 in of rainfall. July and September also tend to see above-average precipitation. The driest month is March, with just 0 in. That's 21.1 in less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Wind

0km/h5km/h10km/h15km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 10km/hFebWind Speed: 10km/hMarWind Speed: 11km/hAprWind Speed: 11km/hMayWind Speed: 12km/hJunWind Speed: 11km/hJulWind Speed: 11km/hAugWind Speed: 11km/hSepWind Speed: 9km/hOctWind Speed: 7km/hNovWind Speed: 7km/hDecWind Speed: 9km/h
Wind Speed
0mph5mph10mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 6mphFebWind Speed: 6mphMarWind Speed: 7mphAprWind Speed: 7mphMayWind Speed: 7mphJunWind Speed: 7mphJulWind Speed: 7mphAugWind Speed: 7mphSepWind Speed: 5mphOctWind Speed: 4mphNovWind Speed: 4mphDecWind Speed: 6mph
Wind Speed

Bissau is relatively calm, with an average annual wind speed of 10km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is May, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months.Bissau is mildly breezy, with an average annual wind speed of 6mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is May, averaging 7mph, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 4mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3mph gap between the calmest and windiest months.

Monthly Climate Data

The table below shows monthly climate averages for Bissau based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Bissau based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
21 °C69 °F
34 °C93 °F
10 km/h6 mph
0 mm0 in
0 cm0 in
Feb
22 °C71 °F
35 °C95 °F
10 km/h6 mph
0 mm0 in
0 cm0 in
Mar
23 °C73 °F
36 °C96 °F
11 km/h7 mph
0 mm0 in
0 cm0 in
Apr
24 °C75 °F
35 °C96 °F
11 km/h7 mph
0 mm0 in
0 cm0 in
May
25 °C77 °F
34 °C93 °F
12 km/h7 mph
4 mm0.2 in
0 cm0 in
Jun
26 °C78 °F
32 °C90 °F
11 km/h7 mph
72 mm2.8 in
0 cm0 in
Jul
25 °C77 °F
30 °C85 °F
11 km/h7 mph
444 mm17.5 in
0 cm0 in
Aug
25 °C77 °F
29 °C85 °F
11 km/h7 mph
537 mm21.2 in
0 cm0 in
Sep
25 °C76 °F
30 °C86 °F
9 km/h5 mph
407 mm16 in
0 cm0 in
OctCurrent
25 °C77 °F
32 °C89 °F
7 km/h4 mph
149 mm5.9 in
0 cm0 in
Nov
25 °C76 °F
33 °C92 °F
7 km/h4 mph
17 mm0.7 in
0 cm0 in
Dec
21 °C71 °F
34 °C93 °F
9 km/h6 mph
0 mm0 in
0 cm0 in