Bissau weather by month & the best time to visit
Guinea-Bissau · coastal city break · tropical — wet & dry seasons climate
The best time to visit Bissau is January — its sunniest month (Sunshine Score 95/100), with February and December close behind. Bissau averages about 2,736 hours of sunshine a year. Daytime highs around 29°C / 84°F and roughly 1 mm of rain in January.
When is the best time to visit Bissau?
For sunshine, the best time to visit Bissau is January, then February and December. The dullest month is April (57/100, 0 mm of rain). The full month-by-month picture is in the table below.
How sunny is Bissau?
Bissau gets a lot of sun: around 2,736 hours a year. January (95/100) is noticeably better than April (57). It is the only destination Sunshine Atlas tracks in Guinea-Bissau. Rain is strongly seasonal here: roughly 78% of the year's 1,555 mm falls in the three months around August.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 95 | 29° / 84°F | 16° / 61°F | 1 mm | 9 | 27° / 81°F |
| February | 95 | 32° / 90°F | 18° / 64°F | 0 mm | 10 | 28° / 82°F |
| March | 67 | 35° / 95°F | 20° / 68°F | 0 mm | 11 | 28° / 82°F |
| April | 57 | 36° / 97°F | 22° / 72°F | 0 mm | 11 | 29° / 84°F |
| May | 64 | 35° / 95°F | 23° / 73°F | 21 mm | 10 | 29° / 84°F |
| June | 71 | 32° / 90°F | 24° / 75°F | 132 mm | 9 | 30° / 86°F |
| July | 68 | 29° / 84°F | 24° / 75°F | 375 mm | 8 | 29° / 84°F |
| August | 68 | 28° / 82°F | 24° / 75°F | 487 mm | 8 | 29° / 84°F |
| September | 68 | 28° / 82°F | 24° / 75°F | 355 mm | 9 | 29° / 84°F |
| October | 68 | 30° / 86°F | 25° / 77°F | 173 mm | 9 | 30° / 86°F |
| November | 93 | 30° / 86°F | 22° / 72°F | 11 mm | 9 | 31° / 88°F |
| December | 95 | 29° / 84°F | 18° / 64°F | 0 mm | 8 | 28° / 82°F |
Sea temperature in Bissau by month
The sea off Bissau is warmest in November at around 31°C / 88°F, and coolest in January at 27°C / 81°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Bissau: questions and answers
What kind of destination is Bissau?
Bissau is a coastal city break in Guinea-Bissau with a tropical — wet & dry seasons climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Bissau get a year?
Bissau gets about 2,736 hours of sunshine a year, at its best around January.
When is the best time to visit Bissau?
The sunniest time to visit Bissau is January, when the Sunshine Score peaks at 95/100 (with February and December close behind). Expect daytime highs around 29°C / 84°F.
What is the least sunny month in Bissau?
April is the least sunny month in Bissau, scoring 57/100 with about 0 mm of rain.
What is the sea temperature in Bissau?
The sea in Bissau ranges from about 27°C (January) to 31°C (November). Month-by-month sea temperatures are on this page.
How strong is the sun in Bissau?
The typical midday UV index in Bissau peaks around 11 (extreme) in March, easing to about 8 (very high) in July. Month-by-month midday UV values are in the UV column of the table on this page.
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