August weather forecast
Bissau, Guinea-Bissau

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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

Weather in August

August sees Bissau dealing with the aftermath of the peak rainy season, experiencing the highest rainfall amount of 683mm (26.89"). The continually high sea temperature influences the longevity of the rainy conditions. A decrease in daylight to 12.5 hours comes as a slight respite from the heat and humidity. Bissau embraces the rainfall, which refreshes the cityscape, invigorating the streets with life and vibrancy. The weather remains conducive to sightseeing and exploring the city's cultural hub.

Temperature

Bissau registers an average high-temperature of a tropical 30°C (86°F) with the arrival of August, showing minor deviation from the preceding month. During August, the average low-temperature is recorded at an agreeable 22.8°C (73°F).

Rainfall

The month with the most rainfall in Bissau is August, when the rain falls for 22 days and typically aggregates up to 683mm (26.89") of precipitation.

Sea temperature

In Bissau, Guinea-Bissau, in August, the average water temperature is 28.3°C (82.9°F).
Note: For any water activity, having surface water temperatures from 25°C (77°F) to 29°C (84.2°F) is considered outstanding and highly delightful for lengthened periods.

Daylight

The average length of the day in August in Bissau is 12h and 31min.
On the first day of August, sunrise is at 06:49 and sunset at 19:27. On the last day of the month, sunrise is at 06:52 and sunset at 19:13 GMT.

Sunshine

August has the least sunshine of the year, with an average of 5h of sunshine.

UV index

The months with the highest UV index in Bissau, Guinea-Bissau, are February through September, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an excessive health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, a regular UV index of 12 translates into these guidelines:
Undertake every vital safety procedure, as unprotected skin and eyes could sustain burns in no time. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. After every outdoor workout or swim, liberally apply and frequently reapply a broad-spectrum SPF 30+ sunscreen. Notice! Sand and water reflections contribute to a stronger UV exposure.
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Frequently asked questions

Is it hot in Bissau during August?

In Bissau, in August, the average high-temperature is 30°C (86°F), and the average low-temperature is 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 683mm (26.89") of precipitation.

How many days does it rain in August in Bissau?

In August, in Bissau, the rain falls for 22 days. Throughout August, 683mm (26.89") of precipitation is accumulated.

What is the sea water temperature in August in Bissau?

In Bissau, the average seawater temperature in August is 28.3°C (82.9°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Bissau have in August?

The average day length in August is 12h and 31min.

What time are sunrise and sunset in August in Bissau?

In August, on the first day of the month, sunrise is at 06:49 and sunset at 19:27. On the last day of the month, in Bissau, sunrise is at 06:52 and sunset at 19:13 GMT.

What is the month with the least sunshine in Bissau?

August has the least sunshine of the year in Bissau, with an average of 5h of sunshine.

How long on average sun shines in August in Bissau?

In August, the average sunshine duration in Bissau is 5h.

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 UV index intensity in August in Bissau?

In Bissau, the average daily maximum UV index in August is 12. A UV Index of 11, and more, symbolizes an excessive health risk from exposure to the Sun's UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in August
Bissau, Guinea-Bissau

Average temperature in August - Bissau, Guinea-Bissau
  • Average high temperature in August: 30°C

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).

  • Average low temperature in August: 22.8°C

The 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).

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Average rainfall in August
Bissau, Guinea-Bissau

Average rainfall in August - Bissau, Guinea-Bissau
  • Average rainfall in August: 682.5mm

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

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Average rainfall days in August
Bissau, Guinea-Bissau

Average rainfall days in August - Bissau, Guinea-Bissau
  • Average rainfall days in August: 22 days

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

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Average sea temperature in August
Bissau, Guinea-Bissau

Average sea temperature in August - Bissau, Guinea-Bissau
  • Average sea temperature in August: 28.3°C

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).

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Average daylight in August /
Average sunshine in August
Bissau, Guinea-Bissau

Average daylight in August / Average sunshine in August - Bissau, Guinea-Bissau
  • Average daylight in August: 12h and 3min

The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 24min).

  • Average sunshine in August: 5h

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

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Average UV index in August
Bissau, Guinea-Bissau

Average UV index in August - Bissau, Guinea-Bissau
  • Average UV index in August: 12

The 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).

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Bissau, Guinea-Bissau

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