Daytime highs, nighttime lows and the warmest cities across French Guiana this September.
French Guiana, experiences very high average maximum daytime temperatures in September, ranging from 31°C (88°F) in Kourou to 34°C (93°F) in Maripasoula. Nighttime temperatures generally drop to 23°C (73°F) in Maripasoula and 25°C (77°F) in Kourou.
Discover the typical September temperatures for the most popular locations of French Guiana on the map below. Detailed insights are just a click away.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across French Guiana.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Kourou averages a daytime high of 31°C (88°F) in September, which is very high for French Guiana.
After dark, Kourou cools to about 25°C (77°F) on an average September night.
Data insights from our comprehensive database indicate that Maripasoula is the city with the highest warmth. Daytime peaks average near 34°C (93°F), while the nights are characterized by a low temperature close to 23°C (73°F).
The coldest city in September in French Guiana is Kourou when we check our database. The maximum daytime temperatures are around 31°C (88°F) and minimum nighttime temperatures fall around 25°C (77°F).
The weather is predominantly sunny, with an estimated total of around 255 hours of sunshine in Kourou. This means many sunny days, which creates a cheerful atmosphere during this month.
The water temperature averages approximately 28°C (82°F) in Cayenne this month, a perfect temperature for swimming and cooling off.
We have much more information about the climate in French Guiana.
Weather and climate has detailed information for every country in the world. Are you going to French Guiana? Get detailed historical weather averages for many cities in French Guiana.
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