Bissau
Guinea-Bissau
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Bissau, Guinea-Bissau

Trees along the golden sandy shores of Bijagos Islands in Bissau, Guinea Bissau in West Africa, with ships sailing on the calm waters under clear blue skies
Trees along the golden sandy shores of Bijagos Islands in Bissau, Guinea Bissau in West Africa, with ships sailing on the calm waters under clear blue skies
January, the same as December, in Bissau, Guinea-Bissau, is a hot winter month, with average temperature ranging between max 31.1°C (88°F) and min 17.8°C (64°F).

Temperature

In January, the average high-temperature is relatively the same as in December - a still hot 31.1°C (88°F). In January, in Bissau, the average low-temperature is 17.8°C (64°F).

Rainfall

Months with the least rainfall in Bissau are January and March with 0.5mm (0") of accumulated rain.

Sea temperature

In Bissau, Guinea-Bissau, in January, the average water temperature is 25.8°C (78.4°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.

Daylight

In January, the average length of the day in Bissau is 11.5h.

Sunshine

In Bissau, Guinea-Bissau, the average sunshine is 8h.

UV index

The average daily maximum UV index in January is 10. A UV Index of 8 to 10 symbolizes a very high threat to health from unsafe exposure to the UV radiation for average individuals.
In January, the average maximum UV index of 10 translate into the following recommendations:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in January in Bissau?

In Bissau, in January, the average high-temperature is 31.1°C (88°F), and the average low-temperature is 17.8°C (64°F).

How much does it rain in Bissau in January?

In Bissau, Guinea-Bissau, in January, 0.5mm (0") of precipitation is typically accumulated.

What is the driest month in Bissau?

Months with the least rainfall in Bissau, Guinea-Bissau, are January and March with 0.5mm (0") of accumulated rain.

What is the water temperature in January in Bissau?

In January, the average sea temperature in Bissau is 25.8°C (78.4°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Bissau have in January?

The average length of the day in January is 11.5h.

How many hours of sunshine does Bissau have in January?

The average sunshine in January in Bissau is 8h.

What is the UV index intensity in January in Bissau?

In January, the average daily maximum UV index in Bissau is 10. A UV Index reading of 8 to 10 represents a very high health risk from the exposure to the Sun's UV rays.
Average temperature in January - Bissau, Guinea-Bissau
  • Average high temperature in January: 31.1°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 January: 17.8°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).

Average rainfall in January - Bissau, Guinea-Bissau
  • Average rainfall in January: 0.5mm

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

Average rainfall days in January - Bissau, Guinea-Bissau
  • Average rainfall days in January: 0 days

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

Average sea temperature in January - Bissau, Guinea-Bissau
  • Average sea temperature in January: 25.8°C

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).

Average daylight in January / Average sunshine in January - Bissau, Guinea-Bissau
  • Average daylight in January: 11.5h

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

  • Average sunshine in January: 8h

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

Average UV index in January - Bissau, Guinea-Bissau
  • Average UV index in January: 10

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).