Weather in Бисау: What to Expect by Season

In Бисау, the weather follows a clear pattern of dry and rainy seasons. From November to April, the city enjoys dry conditions with plenty of sunshine and minimal rainfall. This period is ideal for exploring Бисау without the disruption of heavy downpours.

Starting in May, the rains gradually arrive, peaking between July and September. During these months, Бисау experiences frequent showers, which can affect travel plans but also bring lush greenery to the region. By October, the rains begin to taper off, returning Бисау to its drier state.

Temperatures in Бисау remain warm year-round, with little variation between seasons. From January to April, daytime highs hover around +34–36 °C, while nights stay mild at +18–22 °C. The hottest months are February and March, when the mercury can climb to +36 °C.

During the rainy season, from June to September, temperatures ease slightly, with highs dropping to +30–33 °C. Nights remain warm, rarely falling below +24 °C. Even in the cooler months, like December, Бисау stays pleasant, with daytime temperatures around +33 °C and nights at +19 °C.

Бисау has a distinct wet season, with almost all rainfall occurring between June and October. The heaviest rains fall in August, when the city receives nearly 490 mm of precipitation. During this time, short but intense downpours are common, often in the late afternoon or evening.

From November to April, Бисау is virtually rain-free, with January through March recording no measurable precipitation. Even in May and November, rainfall is minimal, making these months a comfortable transition between the wet and dry seasons.

For a trip to Бисау during the dry season, pack lightweight, breathable clothing to stay comfortable in the heat. A hat, sunglasses, and sunscreen are essential, as the sun is strong year-round. If visiting between November and April, a light jacket may be useful for cooler evenings.

During the rainy season, waterproof footwear and a compact umbrella are practical additions. Quick-dry clothing is helpful, as humidity rises with the rainfall. Regardless of when you visit Бисау, insect repellent is a good idea, especially in the wetter months.