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Monthly climate in Bissora, Guinea-Bissau

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Bissora features a tropical savanna climate (Aw). Temperatures typically range between 26 °C (79 °F) and 30 °C (86 °F) through the year, but rarely can drop to 15 °C (59 °F) or can rise to as high as 43 °C (110 °F). The average annual precipitation amounts to about 1420 mm (55.9 inches) and receives 104 rainy days on the 1 mm (0.04 inches) threshold annually. Bissora enjoys an average of 3598 hours of sunshine throughout the year, and daylight varies from 11 hours 24 minutes to 12 hours 49 minutes per day.

Monthly average temperatures in Bissora, Guinea-Bissau

The warmest months in Bissora are April, May and June, with daily mean temperatures ranging from 29 to 30 °C (85 - 86 °F) throughout the day. The coldest temperatures usually occur in January, August and December, when daily mean temperatures range from 26 to 27 °C (79 - 80 °F) throughout the day. On average each year, Bissora 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 Bissora. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum38°C
(101°F)		41°C
(106°F)		43°C
(109°F)		43°C
(110°F)		41°C
(107°F)		40°C
(105°F)		35°C
(96°F)		34°C
(94°F)		35°C
(95°F)		36°C
(97°F)		38°C
(100°F)		37°C
(99°F)
Mean maximum37°C
(99°F)		39°C
(102°F)		40°C
(105°F)		41°C
(106°F)		40°C
(105°F)		38°C
(101°F)		34°C
(94°F)		33°C
(92°F)		34°C
(94°F)		35°C
(96°F)		36°C
(97°F)		37°C
(98°F)
Average high34°C
(94°F)		36°C
(97°F)		38°C
(100°F)		38°C
(101°F)		37°C
(99°F)		35°C
(95°F)		31°C
(89°F)		30°C
(87°F)		31°C
(89°F)		33°C
(92°F)		34°C
(94°F)		34°C
(94°F)
Daily mean26°C
(79°F)		27°C
(81°F)		29°C
(84°F)		30°C
(86°F)		30°C
(86°F)		29°C
(85°F)		27°C
(82°F)		27°C
(80°F)		27°C
(81°F)		28°C
(83°F)		28°C
(82°F)		26°C
(79°F)
Average low19°C
(66°F)		20°C
(68°F)		21°C
(71°F)		22°C
(73°F)		24°C
(75°F)		25°C
(77°F)		25°C
(76°F)		24°C
(76°F)		24°C
(75°F)		24°C
(76°F)		23°C
(73°F)		19°C
(67°F)
Mean minimum16°C
(60°F)		17°C
(63°F)		19°C
(67°F)		21°C
(70°F)		21°C
(71°F)		23°C
(74°F)		23°C
(73°F)		23°C
(73°F)		22°C
(73°F)		22°C
(72°F)		19°C
(66°F)		16°C
(62°F)
Minimum15°C
(59°F)		16°C
(60°F)		18°C
(65°F)		20°C
(68°F)		21°C
(69°F)		22°C
(71°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		21°C
(70°F)		16°C
(61°F)		16°C
(60°F)

Compare climate in Bissora with other places

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

Monthly average precipitation in Bissora, Guinea-Bissau

Bissora usually has the most precipitation in July, August and September, with an average of 26 rainy days and 410 mm (16.1 inches) of precipitation per month. The driest months in Bissora are January, March and December. On average, 0 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bissora. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)0 (0.0)0 (0.0)0 (0.0)0 (0.0)4 (0.1)53 (2.1)386 (15.2)463 (18.2)380 (14.9)116 (4.6)18 (0.7)0 (0.0)
Average precipitation days (≥ 1 mm)0000072628251530

Monthly sunshine hours in Bissora, Guinea-Bissau

The sunniest months in Bissora are March, April and May, when the sun shines an average of 11 hours 0 minutes a day. Least sunny months in Bissora: January, August and September receive an average of 8 hours 27 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Bissora. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours256286334332345313284252268300304318
Mean daily daylight hours11h 29m11h 43m12h 3m12h 23m12h 40m12h 49m12h 44m12h 29m12h 10m11h 50m11h 32m11h 24m

Solar UV radiation in Bissora, Guinea-Bissau

Bissora 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. January, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 9. For more detailed information, check out our hourly Bissora UV Index data.

Average daily maximum UV levels by month for Bissora. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)910121213131314141299