Weather in August in French Guiana

Many people wonder what kind of weather they can expect in August 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 August?

The weather conditions in French Guiana in August range from poor to tolerable depending on the destination.

You can expect very warm maximum average daytime temperatures around 32°C (89°F) and nighttime temperatures around 23°C (73°F) in Cayenne. These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.

August is a very rainy month with an average rainfall around 248mm (9.8inch) in Cayenne. It is also generally a sunny month with an average of 230 hours of sunshine in Cayenne during the whole month.

We invite you to have a look at the map below to find out more about the different weather conditions per location in French Guiana.

Where to go in French Guiana in August

Find the average weather conditions in August 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 / 3.5inch a month).

Popular destinations in French Guiana

What is the weather like in August for the 3 most popular destinations in French Guiana?

Average weather in Cayenne

In August Cayenne generally has very high temperatures with maximum daytime temperatures around 32°C (89°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are poor 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
<<   July July
<<  
31°C / 88°F 
23°C / 73°F 
197 hours 
413mm / 16inch 
21 days 
poor 
32°C / 89°F 
23°C / 73°F 
230 hours 
248mm / 9.8inch 
14 days 
poor 
32°C / 90°F 
22°C / 72°F 
255 hours 
145mm / 5.7inch 
7 days 
Climate in Cayenne

Average weather in Kourou

In August Kourou generally has very high temperatures with maximum daytime temperatures around 32°C (89°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are poor 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
<<   July July
<<  
31°C / 88°F 
23°C / 73°F 
197 hours 
413mm / 16inch 
21 days 
poor 
32°C / 89°F 
23°C / 73°F 
230 hours 
248mm / 9.8inch 
14 days 
poor 
32°C / 90°F 
22°C / 72°F 
255 hours 
145mm / 5.7inch 
7 days 
Climate in Kourou

Average weather in Matoury

In August Matoury generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 21°C (70°F) and heavy monthly rainfall. So on average the conditions are tolerable 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
<<   July July
<<  
30°C / 86°F 
22°C / 72°F 
215 hours 
244mm / 9.6inch 
24 days 
poor 
31°C / 88°F 
21°C / 70°F 
241 hours 
165mm / 6.5inch 
18 days 
31°C / 88°F 
21°C / 70°F 
252 hours 
74mm / 2.9inch 
8 days 
Climate in Matoury

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

Is August the best time to go to French Guiana?

In our opinion August is not the best time to visit French Guiana with commonly poor weather in Cayenne.

On average the best time to visit French Guiana is in October and November with generally pleasant weather in Cayenne. The worst months are January, February, March, April, May, June, July and August 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.

  • January      
  • February      
  • March      
  • April      
  • May      
  • June      
  • July      
  • August      
  • September      
  • October      
  • November      
  • December      
  • 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.