French Guiana weather in September

Many people wonder what kind of weather they can expect in September in French Guiana. Is this month a good time to go to French Guiana? To answer that question we created this page with all the information you need.

What is the weather like in French Guiana in September?

The weather conditions in French Guiana in September vary from pleasant to perfect depending on the destination.

During September in French Guiana, the average maximum temperature varies from high in Kourou with 29°C (84°F) to very high in Maripasoula with 32°C (89°F).

Precipitation in September varies from moderate in Saint Georges with an average of 41mm (1.6 inches) of rainfall to moderate in Maripasoula with 56mm (2.2 inches). It is the driest month of the year in Kourou. It is also generally a sunny time of year with an average of 255 hours of sunshine in Kourou during the entire month.

We invite you to have a look at the map below to discover more about the various weather conditions around French Guiana.

Where to go in French Guiana in September

Find the average weather conditions in September for the most popular destinations in French Guiana on the map below. Click on a destination dot for more detailed information.

Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

Popular destinations in French Guiana

What is the weather like in September for the 5 most popular destinations in French Guiana?

Average weather in Kourou

In September Kourou generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 25°C (78°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

Kourou
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
28°C / 83°F 
25°C / 77°F 
230 hours 
86mm / 3.4" 
10 days 
29°C / 84°F 
25°C / 78°F 
255 hours 
47mm / 1.8" 
5 days 
October   >> October
>>  
29°C / 84°F 
25°C / 78°F 
251 hours 
61mm / 2.4" 
5 days 
Climate in Kourou

Average weather in Matoury

In September Matoury generally has very high temperatures with maximum daytime temperatures around 32°C (89°F), minimum nighttime temperatures around 22°C (72°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

Matoury
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
31°C / 88°F 
22°C / 72°F 
235 hours 
121mm / 4.8" 
12 days 
32°C / 89°F 
22°C / 72°F 
255 hours 
50mm / 2" 
8 days 
October   >> October
>>  
32°C / 90°F 
22°C / 72°F 
256 hours 
48mm / 1.9" 
7 days 
Climate in Matoury

Average weather in Cayenne

In September Cayenne generally has very high temperatures with maximum daytime temperatures around 32°C (89°F), minimum nighttime temperatures around 22°C (72°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

Cayenne
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
31°C / 88°F 
22°C / 72°F 
235 hours 
122mm / 4.8" 
11 days 
32°C / 89°F 
22°C / 72°F 
255 hours 
50mm / 1.9" 
8 days 
October   >> October
>>  
32°C / 90°F 
22°C / 72°F 
256 hours 
48mm / 1.9" 
7 days 
Climate in Cayenne

Average weather in Maripasoula

In September Maripasoula generally has very high temperatures with maximum daytime temperatures around 32°C (89°F), minimum nighttime temperatures around 22°C (71°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

Maripasoula
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
31°C / 88°F 
22°C / 71°F 
235 hours 
133mm / 5.2" 
12 days 
32°C / 89°F 
22°C / 71°F 
250 hours 
56mm / 2.2" 
8 days 
October   >> October
>>  
32°C / 90°F 
22°C / 71°F 
259 hours 
48mm / 1.9" 
7 days 
Climate in Maripasoula

Average weather in Saint Georges

In September Saint Georges generally has very high temperatures with maximum daytime temperatures around 32°C (89°F), minimum nighttime temperatures around 22°C (72°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

Saint Georges
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
31°C / 87°F 
22°C / 72°F 
235 hours 
118mm / 4.6" 
12 days 
32°C / 89°F 
22°C / 72°F 
246 hours 
41mm / 1.6" 
7 days 
October   >> October
>>  
32°C / 89°F 
22°C / 72°F 
249 hours 
36mm / 1.4" 
6 days 
Climate in Saint Georges

Is your destination not in the list? Have a look at other destinations in French Guiana.

Is September the best time to go to French Guiana?

In our opinion September is one of the best times to visit French Guiana with commonly perfect weather in Kourou.

On average the best time to visit French Guiana is in August, September and October with generally perfect weather in Kourou. The worst months are January, March, April, May, June and December that can have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in French Guiana. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for almost all countries in the world. Are you going to French Guiana? Get detailed historical weather averages for many cities in French Guiana.

    Not sure yet where to go? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.