With Bissau's UV index reaching 7.9, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours between 10 a.m. and 4 p.m., when UV rays are strongest.
Read more here about the climate and sun exposure in and around Bissau.
The UV index in Bissau, Guinea-Bissau can reach high levels throughout the year. On a scale from 0 to 11, with higher values indicating greater risk of harm from unprotected sun exposure, Bissau often experiences UV index ratings above 8 (very high). It is important to take precautions such as wearing sunscreen, protective clothing, and sunglasses to minimize the risk of sunburn and skin damage.
Bissau experiences two distinct weather seasons, namely a wet season and a dry season. The wet season, which occurs from June to October, brings heavy rainfall and high humidity, with temperatures averaging around 26-28 °C (79-82 °F). The dry season, from November to May, is characterized by lower humidity, cooler temperatures ranging between 22-24 °C (72-75 °F), and little to no rainfall.
Compared to its region, Bissau receives a significant amount of sun exposure due to its location along the West African coast. The region experiences a tropical climate, which means there are no extremes in temperature but rather consistent warmth throughout the year. However, Bissau may be slightly cooler than other parts of West Africa due to its coastal proximity, resulting in a more moderate climate.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Bissau. It's designed to provide you with a better understanding of the yearly weather and sun exposure.