Monthly weather forecast and climate
Bissau, Guinea-Bissau

Trees along the golden sandy shores of Bijagos Islands in Bissau, Guinea Bissau in West Africa
Trees along the golden sandy shores of Bijagos Islands in Bissau, Guinea Bissau in West Africa

The best time to visit Bissau

The best months for a swim in Bissau, Guinea-Bissau, are January, March through May, November and December, with a perfect temperature - varying between 25°C (77°F) and 29°C (84.2°F), and scarce rainfall.

Weather in January

January, like December, is another tropical winter month in Bissau, Guinea-Bissau, with average temperature fluctuating between 17.8°C (64°F) and 31.1°C (88°F). An excellent water temperature of 25.8°C (78.4°F) and 0.5mm (0.02") of accumulated rainfall makes January a prime for swimming and other water activities. Weather in January »

Weather in February

February, the last month of the winter, in Bissau, is also a hot month, with average temperature ranging between max 32.8°C (91°F) and min 18.3°C (64.9°F). In February, the average high-temperature is relatively the same as in January - a still tropical 32.8°C (91°F). Weather in February »

Weather in March

March, the first month of the spring, in Bissau, is still a hot month, with temperature in the range of an average low of 19.4°C (66.9°F) and an average high of 33.9°C (93°F). An excellent water temperature of 25.1°C (77.2°F) and 0.5mm (0.02") of accumulated rainfall makes March a prime for swimming and other water activities. Weather in March »

Weather in April

April, like March, is another tropical spring month in Bissau, Guinea-Bissau, with average temperature fluctuating between 33.3°C (91.9°F) and 20.6°C (69.1°F). The perfect water temperature of 25.9°C (78.6°F) with 0.8mm (0.03") of accumulated rainfall and only 1 rainfall days, makes April a great period for swimming and other water activities. Weather in April »

Weather in May

The last month of the spring, May, is another tropical month in Bissau, Guinea-Bissau, with average temperature fluctuating between 22.2°C (72°F) and 32.8°C (91°F). An excellent water temperature of 26.8°C (80.2°F) and only 3 rainfall days, with 17.3mm (0.68") of accumulated rainfall, makes May a prime for swimming and other water activities. Weather in May »

Weather in June

June, the first month of the summer, in Bissau, is still a hot month, with average temperature varying between 31.1°C (88°F) and 22.8°C (73°F). In June, the average high-temperature is relatively the same as in May - a still hot 31.1°C (88°F). Weather in June »

Weather in July

July, like June, in Bissau, Guinea-Bissau, is a moderately hot summer month, with temperature in the range of an average high of 29.4°C (84.9°F) and an average low of 22.8°C (73°F). With an average high-temperature of 29.4°C (84.9°F) and an average low-temperature of 22.8°C (73°F), July is the coldest month. In Bissau, during 18 rainfall days, 472.5mm (18.6") of precipitation is typically accumulated. Weather in July »

Weather in August

The last month of the summer, August, is a tropical month in Bissau, Guinea-Bissau, with average temperature varying between 22.8°C (73°F) and 30°C (86°F). In Bissau, the average high-temperature is practically the same as in July - a tropical 30°C (86°F). Weather in August »

Weather in September

The first month of the autumn, September, is still a tropical month in Bissau, Guinea-Bissau, with temperature in the range of an average high of 30°C (86°F) and an average low of 22.8°C (73°F). In September, the average high-temperature remains the same as in August - a still hot 30°C (86°F). Weather in September »

Weather in October

October, the same as September, in Bissau, Guinea-Bissau, is another tropical autumn month, with average temperature varying between 22.8°C (73°F) and 31.1°C (88°F). In October, the average high-temperature is almost the same as in September - a still tropical 31.1°C (88°F). Weather in October »

Weather in November

November, the last month of the autumn, in Bissau, is another tropical month, with average temperature ranging between max 31.7°C (89.1°F) and min 22.2°C (72°F). The ideal sea water temperature of 28.8°C (83.8°F) and only 2 rainfall days, with 41.4mm (1.63") of accumulated rainfall, makes November the best time for swimming and other water activities. Weather in November »

Weather in December

The first month of the winter, December, is also a hot month in Bissau, Guinea-Bissau, with average temperature varying between 18.9°C (66°F) and 30.6°C (87.1°F). An excellent water temperature of 27.2°C (81°F) and only 1 rainfall days, with 2mm (0.08") of accumulated rainfall, makes December a prime for swimming and other water activities. Weather in December »
[Resources]

FAQ

How much does it rain in Bissau?

During the entire year, Bissau aggregates up to 2022.8mm (79.64") of precipitation.

What is the driest month in Bissau?

Months with the least rainfall in Bissau, Guinea-Bissau, are January and March with 0.5mm (0.02") of accumulated rain.

When is the sea coldest in Bissau?

February is the month with the coldest seawater, with an average sea temperature of 24.8°C (76.6°F).

What are the months with the highest UV index in Bissau?

February through September, with an average maximum UV index of 12, are months with the highest UV index.

What is the warmest month in Bissau?

With an average high-temperature of 33.9°C (93°F) and an average low-temperature of 19.4°C (66.9°F), March is the warmest month in Bissau, Guinea-Bissau.

What are the months with the most sunshine in Bissau?

March and April, with an average of 9h of sunshine, are months with the most sunshine in Bissau.

When are the longest days in Bissau?

With an average of 12.8h of daylight, June has the longest days of the year.

What is the coldest month in Bissau?

July is the coldest month in Bissau, with an average high-temperature of 29.4°C (84.9°F) and an average low-temperature of 22.8°C (73°F).

What is the rainiest month in Bissau?

August is the month with the most rainfall in Bissau. Rain falls for 22 days and accumulates 682.5mm (26.87") of precipitation.

What is the month with the least sunshine in Bissau?

The month with the least sunshine in Bissau, Guinea-Bissau, is August, with an average of 5h of sunshine.

What months are the sea warmest in Bissau?

October and November, with an average sea temperature of 28.8°C (83.8°F), are months with the warmest seawater.

What is the month with the shortest days in Bissau?

The month with the shortest days is December, with an average of 11.4h of daylight.

What is the month with the lowest UV index in Bissau?

With an average maximum UV index of 9, December is the month with the lowest UV index.

Average temperature
Bissau, Guinea-Bissau

Average temperature - Bissau, Guinea-Bissau

The warmest month (with the highest average high temperature) is March (33.9°C).
The month with the lowest average high temperature is July (29.4°C).

Months with the highest average low temperature are June, July, August, September and October (22.8°C).
The coldest month (with the lowest average low temperature) is January (17.8°C).

[Resources]

Average rainfall
Bissau, Guinea-Bissau

Average rainfall - Bissau, Guinea-Bissau

The wettest month (with the highest rainfall) is August (682.5mm).
The driest months (with the least rainfall) are January and March (0.5mm).

[Resources]

Average rainfall days
Bissau, Guinea-Bissau

Average rainfall days - Bissau, Guinea-Bissau

The month with the highest number of rainy days is August (22 days).
Months with the least rainy days are January, February and March (0 days).

[Resources]

Average sea temperature
Bissau, Guinea-Bissau

Average sea temperature - Bissau, Guinea-Bissau

The best months for swimming (with the highest average sea temperature) are October and November (28.8°C).
The coldest month (with the lowest average sea temperature) is February (24.8°C).

[Resources]

Average daylight / Average sunshine
Bissau, Guinea-Bissau

Average daylight / Average sunshine - Bissau, Guinea-Bissau

The month with the longest days is June (Average daylight: 12.8h).
The month with the shortest days is December (Average daylight: 11.4h).

Months with the most sunshine are March and April (Average sunshine: 9h).
The month with the least sunshine is August (Average sunshine: 5h).

[Resources]

Average UV index
Bissau, Guinea-Bissau

Average UV index - Bissau, Guinea-Bissau

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).

[Resources]