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Climate in Bolama and Bijagos
(Guinea-Bissau)

Average daytime and nighttime temperatures

All climatic diagrams on this site result from the collected data from two measuring weather stations in Bolama and Bijagos.
All data correspond to the average monthly values of the last 20 years.
Back to overview: Guinea-Bissau
Bolama and Bijagos is one of the coldest regions in Guinea-Bissau with an average daily high temperature of only 33 degrees. The climate is very warm with an annual average of 33 degrees, but has few truly tropical and sultry months. It is warm to hot all year round and invites to bathe at average water temperatures of 26 degrees. Dued to the lesser rain the best time for traveling is from November to May. The most rain days occur from from July to October.
Overview: Climate in Guinea-Bissau
Daylengths and sun positions in Guinea-Bissau
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Hours of sunshine per daySunshine hours per day in Bolama and Bijagos
The number of hours of sunshine refers to the time when the sun is actually visible. That is, without any obstruction of visibility by clouds, fog or mountains. With 10 hours per day, April is the sunniest month in the region of Bolama and Bijagos. In August the sun shines the shortest.
Rainy days per monthRainy days per month in Bolama and Bijagos
A rainy day is a day on which at least an amount of 0.1 mm precipitation (=0.1 liter) per square meter falls. This can be rain, snow, hail or even dew. So it does not have to rain the whole day. With 24 rainy days, August offers the most number of rainy days, and in December the least.
Precipitation in mm/dayPrecipitation in Bolama and Bijagos
The amount of precipitation is measured in millimeters per square meter. Thus, at two mm/day, two liters of water fall on one square meter within 24 hours. With only 0.0 mm, the least rain falls in December. August, on the other hand, has the most rain.
Water temperatureWater temperatures in Bolama and Bijagos
Water temperature depends not only on solar radiation within the same region, but also on ocean currents. For example, depending on the season, cold or warm water masses are moved from other areas. The warmest temperatures in Bolama and Bijagos are in August, when the water is 29 °C.
Relative humidity in %Relative humidity in Bolama and Bijagos
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture of the physically possible is actually contained in the air. At high humidity, the person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% gives as pleasant. With humidity averaging 87%, August is the most uncomfortable. In January, on the other hand, it is easier to endure.
Absolute humidity in g/m³Absolute humidity in Bolama and Bijagos
In warm months, there is also a higher absolute humidity almost everywhere. At a temperature of 25°C, air can absorb up to 23 grams of water per cubic meter. At 20°C, it is only 17.3 grams. A relative humidity of 40% at 25°C thus corresponds to an absolute humidity of 9.2 grams of water. From a proportion of approx. 13.5 grams, humans perceive the air as muggy. This limit is reached in 11 months in Bolama and Bijagos, although these are average values, and a month is rarely completely or not at all considered humid.
Humidex in °CHumidex in Bolama and Bijagos
The "Humidex" (humidity index) is an index of well-being in warmer areas, calculated from the air temperature, relative humidity and dew point. The index corresponds approximately to the temperature felt. At high temperatures, the body transports heat away by sweating. At high humidity the ambient air can only absorb a small amount of sweat and thus one feels uncomfortable. An index of 20-29 is considered comfortable. Up to 39, people perceive the air as slightly uncomfortable, and above 40, as very uncomfortable. Values above 45 are dangerous in the long run and often lead to heat stroke.
Climate charts for other regions in Guinea-Bissau

Map of Bolama and Bijagos

Most important cities in the region »Bolama and Bijagos«

Only very small villages are located here. The two biggest are Bolama and Bubaque.

CityPopulationGeo position
Bolama10,76911° 34' 37"N15° 28' 34"W
Bubaque9,24411° 16' 60"N15° 49' 60"W

Data basis: German Weather Service, individual values averaged and supplemented by own elements. Data on cities and inhabitants: geonames.org, United Nations Statistics Division and own research.
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