January weather forecast
Bissau, Guinea-Bissau

Bissau, Guinea-Bissau kicks off the year with predictably balmy temperatures and minimal rainfall. An unseasonably high of 31.1°C (88°F) gets recorded while diverse flora and fauna bask in an average of 11.5 hours of daylight. January bids farewell with a UV index of 10 marking the month pleasantly moderate for outdoor activities. The idyllic temperature of the sea invites residents and visitors alike to indulge in water sports. The scarcity of precipitation makes it the perfect time for outdoor exploration, allowing nature enthusiasts to discover the country's rich biodiversity.

Temperature

Transitioning into January, Bissau records an average high-temperature of a still hot 31.1°C (88°F), almost identical to December's 30.6°C (87.1°F). Bissau notes a substantial temperature decline from the daytime peaks throughout January, with an average nighttime temperature of 17.8°C (64°F).

Rainfall

January and March are months with the least rain in Bissau when 1mm (0.04") of rain is typically aggregated.

Sea temperature

In Bissau, the average seawater temperature in January is 25.8°C (78.4°F).
Note: Swimming, diving, and other water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are highly enjoyable and provide prolonged comfort without unease.

Daylight

In January, the average length of the day in Bissau, Guinea-Bissau, is 11h and 31min.
On the first day of January in Bissau, Guinea-Bissau, sunrise is at 07:22 and sunset at 18:49. On the last day of the month, sunrise is at 07:27 and sunset at 19:04 GMT.

Sunshine

In Bissau, the average sunshine in January is 8h.

UV index

In Bissau, the average daily maximum UV index in January is 10. A UV Index of 8 to 10 symbolizes a very high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, the maximum UV index of 10 suggests these recommendations:
Be proactive in protecting yourself; skin and eyes can be harmed if left unprotected. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Enhance your sun protection with tightly woven, yet airy clothing. Sunscreen with a sun protection factor of no less than 30 should be used liberally and reapplied frequently on overcast days, including after every swim or outdoor activity. Take note! Sand and water reflections strengthen the Sun's UV exposure.