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Bissau weather in September (Guinea-Bissau)

Looking to travel to Bissau in September? Check out this comprehensive weather guide.

In September, Bissau generally has very high temperatures and heavy rainfall. Throughout the daytime, temperatures often hover around 31°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 25°C.

While these temperatures are typical, some days might be even hotter. Always be prepared for the unexpected spikes in warmth. Dressing in lightweight and breathable outfits will help you stay cool. Don't forget to stay hydrated and wear sun protection to handle the heat better.

Bissau in September falls under the rainy season with heavy rainfall, averaging around 321 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 19 days of the month will see rainfall.

The city usually sees around 180 hours of sunlight, indicating a moderately sunny period.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Bissau. January typically offers the best circumstances. While July, August and September tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Bissau climate page with graphs.

 

Bissau, monthly averages in September

Min TemperatureMin Temperature 25°C  
Max TemperatureMax Temperature 31°C  
Chance of RainChance of Rain 63%  
PrecipitationPrecipitation 321 mm  
Rainy daysRainy days 19 days  
SunshineSunshine 180 hours  
Percentage SunshinePercentage Sunshine  

Where to go in Guinea-Bissau in September

Find out more about the weather in Guinea-Bissau in September and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Bissau in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming
7/10
Cycling
7/10
Walking
7/10
Camping
6/10
Outdoor sports
7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Bissau.

Our site offers climate and forecast data for every country in the world. Are you going to Guinea-Bissau? On this website you can find historical weather averages for many cities in Guinea-Bissau. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.