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Monthly climate in Bolama, Guinea-Bissau

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Bolama features a tropical savanna climate (Aw).Temperatures typically range between 26 °C (80 °F) and 29 °C (84 °F) through the year, but rarely can drop to 20 °C (69 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1760 mm (69.3 inches) and receives 122 rainy days on the 1 mm (0.04 inches) threshold annually.Bolama enjoys an average of 3543 hours of sunshine throughout the year, and daylight varies from 11 hours 26 minutes to 12 hours 46 minutes per day.

Monthly average temperatures in Bolama, Guinea-Bissau §

The warmest months in Bolama are June, October and November, with daily mean temperatures ranging from 28 to 29 °C (82 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and August, when daily mean temperatures range from 26 to 27 °C (80 - 80 °F) throughout the day. On average each year, Bolama experiences 329 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Bolama, Guinea-Bissau.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 34°C
(93°F)		 35°C
(96°F)		 36°C
(97°F)		 35°C
(95°F)		 33°C
(92°F)		 32°C
(90°F)		 30°C
(86°F)		 30°C
(86°F)		 32°C
(89°F)		 32°C
(91°F)		 34°C
(93°F)		 34°C
(93°F)
Mean maximum 33°C
(91°F)		 34°C
(94°F)		 34°C
(94°F)		 33°C
(92°F)		 32°C
(90°F)		 31°C
(87°F)		 30°C
(86°F)		 29°C
(85°F)		 31°C
(87°F)		 31°C
(89°F)		 33°C
(92°F)		 34°C
(93°F)
Average high 31°C
(87°F)		 31°C
(87°F)		 31°C
(87°F)		 30°C
(87°F)		 30°C
(86°F)		 29°C
(85°F)		 28°C
(83°F)		 28°C
(82°F)		 29°C
(84°F)		 30°C
(86°F)		 31°C
(88°F)		 31°C
(89°F)
Daily mean 26°C
(80°F)		 27°C
(80°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 28°C
(82°F)		 27°C
(80°F)		 26°C
(80°F)		 27°C
(81°F)		 28°C
(83°F)		 29°C
(84°F)		 27°C
(82°F)
Average low 23°C
(73°F)		 23°C
(74°F)		 24°C
(76°F)		 25°C
(77°F)		 25°C
(78°F)		 26°C
(79°F)		 25°C
(78°F)		 25°C
(78°F)		 25°C
(78°F)		 26°C
(80°F)		 27°C
(80°F)		 24°C
(76°F)
Mean minimum 21°C
(70°F)		 22°C
(72°F)		 23°C
(73°F)		 24°C
(75°F)		 24°C
(75°F)		 25°C
(77°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(76°F)		 25°C
(76°F)		 22°C
(72°F)
Minimum 20°C
(69°F)		 21°C
(70°F)		 22°C
(72°F)		 22°C
(73°F)		 23°C
(74°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(75°F)		 24°C
(75°F)		 23°C
(74°F)		 20°C
(69°F)

Compare climate in Bolama with other places

Compare temperature, precipitation, sunshine, UV index in Bolama, Guinea-Bissau with other places around the world.

Monthly average precipitation in Bolama, Guinea-Bissau §

Bolama usually has the most precipitation in July, August and September, with an average of 28 rainy days and 513 mm (20.2 inches) of precipitation per month.The driest months in Bolama are January, February and March. On average, 0 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bolama, Guinea-Bissau.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 0 (0.0) 0 (0.0) 0 (0.0) 0 (0.0) 2 (0.1) 60 (2.4) 555 (21.8) 598 (23.5) 388 (15.3) 130 (5.1) 27 (1.1) 0 (0.0)
Average precipitation days (≥ 1 mm) 0 0 0 0 0 11 29 29 27 20 6 0

Monthly sunshine hours in Bolama, Guinea-Bissau §

The sunniest months in Bolama are March, April and May, when the sun shines an average of 10 hours 56 minutes a day.Least sunny months in Bolama: January, August and September receive an average of 8 hours 13 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Bolama, Guinea-Bissau.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 258 289 334 331 340 297 268 239 258 298 305 321
Mean daily daylight hours 11h 31m 11h 44m 12h 3m 12h 22m 12h 38m 12h 46m 12h 42m 12h 28m 12h 9m 11h 50m 11h 34m 11h 26m

Solar UV radiation in Bolama, Guinea-Bissau §

Bolama experiences the highest level of ultraviolet (UV) radiation in May, August and September, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure.February, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 10. For more detailed information, check out our hourly Bolama UV Index data.

Average daily maximum UV levels by month for Bolama, Guinea-Bissau.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 10 10 11 12 13 13 13 14 14 12 9 9