Weather in Guinea-Bissau

• All Year
• Summer
• Autumn
• Winter
• Spring

Yearly weather

Calculations are based on the last 8 years of historical weather data.

Temperatures

• Bissau experiences consistently warm temperatures throughout the year, with average lows always above 20°C and highs frequently exceeding 30°C

• The hottest months are February through April, with highs nearing 35°C

• July and August are the coolest months, although still very warm, with highs around 28-29°C

• Temperatures are generally within the comfort zone, with the exception of daytime highs from January to May and October to December, which can be uncomfortably hot.

Conditions

• Bissau experiences a significant shift in weather patterns throughout the year, with high sunshine hours and almost no precipitation from January to April

• From June to October, sunshine hours drop drastically, while precipitation increases significantly, peaking in August

• This indicates a distinct wet season during the Northern Hemisphere summer months.

Astronomy

• Bissau experiences a relatively small variation in sunrise and sunset times throughout the year, with the earliest sunrise in June and the latest in January. Sunset is earliest in November and latest in July.

• Consequently, the day length also fluctuates moderately, with the shortest day in December and the longest in June, resulting in just over an hour difference in daylight duration.