Guinea-Bissau weather

Read our complete guide to the weather in Guinea-Bissau.

Usually in May
- 35
- 22
- 8
Weather by month
Now Today
- 34
- 7
5-day forecast

Below are the temperatures expected today at popular destinations in Guinea-Bissau. Select a destination to compare today's forecast with average weather conditions.

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Recommended for Guinea-Bissau

The weather guide for Guinea-Bissau (Bissau) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

When is the best time to go to Guinea-Bissau?

The best time to go to Guinea-Bissau (Bissau) is July and September based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

2.5
Jan
2
Feb
2.5
Mar
2.5
Apr
2
May
2
Jun
3
Jul
2.5
Aug
3
Sep
2.5
Oct
2.5
Nov
3
Dec

Change criteria

Max Day Temperature (°C)

33
Jan
35
Feb
35
Mar
35
Apr
35
May
33
Jun
30
Jul
30
Aug
30
Sep
32
Oct
33
Nov
32
Dec

Hours of Sunshine (daily)

8
Jan
8
Feb
9
Mar
9
Apr
8
May
7
Jun
6
Jul
5
Aug
6
Sep
7
Oct
8
Nov
8
Dec

Best time to go for the weather

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

Metric (°C / mm) | Imperial (°F / inches)

Guinea-Bissau weather overview

The tiny country of Guinea-Bissau borders Guinea to the south and shares its tropical climate. It has a very heavy rainy season from May to November when conditions are made unpleasant by high humidity. Things look up between December and April when Harmattan desert winds bring dryer air to the interior and trade winds perk up the coast. Dry season temperatures get higher the further you go inland but tend to plummet at night.

What to pack for Guinea-Bissau weather

Take light clothing and good waterproofs for the rains and warmer attire for dry season nights inland.

Which is the hottest month in Guinea-Bissau?

The hottest time of year in Bissau, Guinea-Bissau is normally October. Expect maximum daytime temperatures to reach 32°C with very high heat and humidity.

Which month has the most rain in Guinea-Bissau?

In terms of rainfall, August is usually the wettest month in Bissau, Guinea-Bissau with 544mm on average. There are normally 22 days in August with some rain.

When is it sunniest in Guinea-Bissau?

The sunniest time of year in Bissau, Guinea-Bissau is normally March with bright sunshine on average for 72% of daylight hours; that's 9 hours of sunshine per day.

When is the sea warmest in Guinea-Bissau?

The sea is usually at its warmest in Bissau, Guinea-Bissau in November when the water temperature reaches 29°C.

Compare Guinea-Bissau weather with the USA

Below the Guinea-Bissau weather chart shows average maximum daytime temperature for Guinea-Bissau (Bissau) and the USA (Washington).

Maximum daytime temperature (°C)

Guinea-Bissau (Bissau)

USA (Washington)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec