Climate and Average Weather Year Round in Guinea-Bissau
We show the climate in Guinea-Bissau by comparing the average weather in 2 representative places:
Bissau and Cacheu.
You can add or remove cities to customize the report to your liking. See
all locations in Guinea-Bissau.
You can drill down to a specific season, month, and even day by clicking the graphs or using the navigation panel.
Average High and Low Temperature in Guinea-Bissau
Average High and Low Temperature in Guinea-Bissau Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 65°F 65°F 70°F 70°F 75°F 75°F 80°F 80°F 85°F 85°F 90°F 90°F 95°F 95°F 77 66 96 85 77 86 Now Now Bissau Bissau Cacheu Cacheu
The daily average high and low air temperature at
2 meters above the ground.
High Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
90°F 94°F 95°F 94°F 93°F 90°F 86°F 85°F 87°F 89°F 90°F 89°F
90°F 94°F 96°F 95°F 94°F 91°F 88°F 86°F 88°F 90°F 91°F 89°F
Low Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
66°F 68°F 71°F 73°F 75°F 76°F 76°F 76°F 75°F 76°F 74°F 68°F
67°F 68°F 70°F 71°F 74°F 77°F 76°F 76°F 76°F 76°F 73°F 68°F
Average Hourly Temperature in Cacheu Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 12 AM 12 AM 4 AM 4 AM 8 AM 8 AM 12 PM 12 PM 4 PM 4 PM 8 PM 8 PM 12 AM 12 AM Now Now comfortable warm warm hot comfortable sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
Chance of Clearer Skies in Guinea-Bissau
The percentage of time the sky is
clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer Skies Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
56% 61% 61% 58% 51% 33% 21% 18% 18% 22% 41% 49%
56% 60% 62% 60% 55% 37% 24% 19% 18% 23% 42% 49%
Daily Chance of Precipitation in Guinea-Bissau
Daily Chance of Precipitation in Guinea-Bissau Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0% 0% 10% 10% 20% 20% 30% 30% 40% 40% 50% 50% 60% 60% 70% 70% 80% 80% 90% 90% 100% 100% 91 Now Now Bissau Bissau Cacheu Cacheu
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
0.1d 0.0d 0.0d 0.1d 3.4d 14.0d 24.5d 27.8d 24.8d 12.4d 1.1d 0.0d
0.1d 0.1d 0.1d 0.1d 2.0d 11.4d 22.7d 26.8d 23.5d 11.0d 0.8d 0.0d
Average Monthly Rainfall in Guinea-Bissau
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
Rainfall Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
0.0″ 0.0″ 0.0″ 0.0″ 0.8″ 4.5″ 11.6″ 16.3″ 12.9″ 4.8″ 0.4″ 0.0″
0.0″ 0.0″ 0.0″ 0.0″ 0.4″ 3.7″ 10.4″ 15.0″ 11.5″ 4.0″ 0.3″ 0.0″
Hours of Daylight in Guinea-Bissau
Hours of Daylight in Guinea-Bissau Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 4 hr 4 hr 6 hr 6 hr 8 hr 8 hr 10 hr 10 hr 12 hr 12 hr 14 hr 14 hr 16 hr 16 hr 18 hr 18 hr 20 hr 20 hr 12.8 11.4 Now Now Bissau Bissau Cacheu Cacheu
The number of hours during which the Sun is at least partly above the horizon.
Daylight Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
11.5h 11.8h 12.1h 12.4h 12.7h 12.8h 12.7h 12.5h 12.2h 11.9h 11.6h 11.4h
11.5h 11.7h 12.1h 12.4h 12.7h 12.8h 12.8h 12.5h 12.2h 11.8h 11.6h 11.4h
Chance of Muggy Conditions in Guinea-Bissau
The percentage of time that is
muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2.1d 5.0d 11.9d 19.4d 27.3d 29.7d 31.0d 31.0d 30.0d 30.7d 23.2d 7.6d
2.9d 4.8d 10.5d 19.3d 28.1d 29.8d 31.0d 31.0d 30.0d 30.8d 24.0d 9.4d
Average Wind Speed in Guinea-Bissau
Average Wind Speed in Guinea-Bissau Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0 mph 0 mph 1 mph 1 mph 2 mph 2 mph 3 mph 3 mph 4 mph 4 mph 5 mph 5 mph 6 mph 6 mph 7 mph 7 mph 8 mph 8 mph 9 mph 9 mph 8.4 5.0 7.0 4.1 Now Now Bissau Bissau Cacheu Cacheu
The average of mean hourly wind speeds at
10 meters above the ground.
Wind Speed (mph) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
8.0 7.5 7.4 7.8 8.3 7.6 7.9 8.1 6.5 5.1 5.6 7.2
6.7 6.6 6.6 6.8 6.9 6.3 6.3 6.3 5.0 4.2 4.7 6.1
Average Water Temperature in Guinea-Bissau
The daily average wide-area surface water temperature.
Water Temp. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
77°F 76°F 77°F 79°F 81°F 82°F 82°F 82°F 82°F 84°F 84°F 80°F
74°F 74°F 75°F 76°F 78°F 81°F 82°F 82°F 83°F 84°F 83°F 78°F
Tourism Score in Guinea-Bissau
tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.
Beach/Pool Score in Guinea-Bissau
beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.
Growing Season in Guinea-Bissau
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).
Growing Degree Days in Guinea-Bissau
Growing Degree Days in Guinea-Bissau Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2,000°F 2,000°F 4,000°F 4,000°F 6,000°F 6,000°F 8,000°F 8,000°F 10,000°F 10,000°F 12,000°F 12,000°F Now Now Bissau Bissau Cacheu Cacheu
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (
50°F in this case).
Average Daily Incident Shortwave Solar Energy in Guinea-Bissau
Average Daily Incident Shortwave Solar Energy in Guinea-Bissau Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0 kWh 0 kWh 1 kWh 1 kWh 2 kWh 2 kWh 3 kWh 3 kWh 4 kWh 4 kWh 5 kWh 5 kWh 6 kWh 6 kWh 7 kWh 7 kWh 7.0 4.0 Now Now Bissau Bissau Cacheu Cacheu
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
5.4 6.1 6.7 6.9 6.3 4.9 4.1 4.0 4.1 4.1 4.8 5.0
5.4 6.1 6.8 7.0 6.5 5.2 4.3 4.1 4.1 4.2 4.8 5.0
This report illustrates the typical weather for Bissau and Cacheu year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.
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