French Guiana

French Guiana Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in French Guiana in September.

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Cayenne Kourou Matoury Cayenne

Planning a journey to French Guiana this September and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in French Guiana in September

September in French Guiana generally has very warm temperatures, with moderate precipitation.

Temperatures

The average maximum temperatures are very warm and range 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. The temperatures mentioned for both day and night are typical averages. However some days might get even hotter. It's best to stay prepared by wearing cloths suitable for the warmth.

For a closer look at conditions across French Guiana, refer to the map below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Maripasoula with an average of 32 mm (1.3 in) to moderate rainfall in Cayenne with 65 mm (2.6 in). Based on our climate data it is the driest month of the year in Kourou.

Average sunshine

Several destinations enjoy plenty of sunshine this month. Kourou sees close to 255 hours of sunlight, making it great for sun lovers.

Explore French Guiana by month

Pick a month to see the average temperature, rainfall and sunshine in French Guiana - and find the best time to visit. (based on Cayenne)

January29°C (84°F) February29°C (84°F) March29°C (84°F) April30°C (86°F) May30°C (86°F) June30°C (86°F) July30°C (86°F) August31°C (88°F) This monthSeptember32°C (90°F) October32°C (90°F) November31°C (88°F) December30°C (86°F)
Best Time to Visit French Guiana →

Best Places to Visit in French Guiana in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across French Guiana.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in French Guiana

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

Temperature range in French Guiana (September)

Precipitation variation in French Guiana (September)

Kourou

In September Kourou generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 25°C (77°F) and moderate monthly rainfall. So on average the conditions are very good that month.

« August
September
October »
August
September
October
Max temperature
31°C (88°F)
31°C (88°F)
31°C (88°F)
Min temperature
24°C (75°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
230 hours
255 hours
251 hours
Monthly rainfall
110 mm (4.3 in)
54 mm (2.1 in)
64 mm (2.5 in)
Monthly rainy days
10 days
5 days
5 days
Weather conditions
good
very good
very good
Climate in Kourou →

Matoury

In September Matoury generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 24°C (75°F) and moderate monthly rainfall. So on average the conditions are very good that month.

« August
September
October »
August
September
October
Max temperature
32°C (90°F)
32°C (90°F)
32°C (90°F)
Min temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Monthly sun hours
235 hours
255 hours
256 hours
Monthly rainfall
123 mm (4.8 in)
62 mm (2.4 in)
72 mm (2.8 in)
Monthly rainy days
9 days
4 days
4 days
Weather conditions
good
very good
very good
Climate in Matoury →

Cayenne

In September Cayenne generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 24°C (75°F) and moderate monthly rainfall. So on average the conditions are very good that month.

« August
September
October »
August
September
October
Max temperature
32°C (90°F)
32°C (90°F)
33°C (91°F)
Min temperature
23°C (73°F)
24°C (75°F)
24°C (75°F)
Monthly sun hours
235 hours
255 hours
256 hours
Monthly rainfall
130 mm (5.1 in)
65 mm (2.6 in)
75 mm (3 in)
Monthly rainy days
9 days
5 days
4 days
Weather conditions
good
very good
very good
Climate in Cayenne →

Maripasoula

In September Maripasoula generally has very high temperatures with maximum daytime temperatures around 34°C (93°F), minimum nighttime temperatures around 23°C (73°F) and moderate monthly rainfall. So on average the conditions are good that month.

« August
September
October »
August
September
October
Max temperature
33°C (91°F)
34°C (93°F)
35°C (95°F)
Min temperature
22°C (72°F)
23°C (73°F)
23°C (73°F)
Monthly sun hours
235 hours
250 hours
259 hours
Monthly rainfall
63 mm (2.5 in)
32 mm (1.3 in)
31 mm (1.2 in)
Monthly rainy days
12 days
7 days
7 days
Weather conditions
very good
good
mixed
Climate in Maripasoula →

Saint Georges

In September Saint Georges generally has very high temperatures with maximum daytime temperatures around 33°C (91°F), minimum nighttime temperatures around 23°C (73°F) and moderate monthly rainfall. So on average the conditions are very good that month.

« August
September
October »
August
September
October
Max temperature
32°C (90°F)
33°C (91°F)
34°C (93°F)
Min temperature
23°C (73°F)
23°C (73°F)
23°C (73°F)
Monthly sun hours
235 hours
246 hours
249 hours
Monthly rainfall
102 mm (4 in)
42 mm (1.7 in)
47 mm (1.9 in)
Monthly rainy days
10 days
6 days
5 days
Weather conditions
good
very good
good
Climate in Saint Georges →

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

Popular cities in September

Day & night temperatures, rainfall and average weather in French Guiana in September.

City Weather Day temp Night temp Rainfall
Cayenne 32°C (90°F) 24°C (75°F) 50 mm (2 in)
Kourou 31°C (88°F) 25°C (77°F) 54 mm (2.1 in)
Matoury 32°C (90°F) 24°C (75°F) 62 mm (2.4 in)
Cayenne 32°C (90°F) 24°C (75°F) 65 mm (2.6 in)
Saint Georges 33°C (91°F) 23°C (73°F) 42 mm (1.7 in)
Maripasoula 34°C (93°F) 23°C (73°F) 32 mm (1.3 in)

French Guiana weather in September: frequently asked questions

What is the weather like in French Guiana in September?

September in French Guiana brings good weather. In Kourou, daytime temperatures are typically around 31°C (88°F) and nighttime lows hover near 25°C (77°F).

What is the average temperature in French Guiana in September?

Average temperatures in French Guiana during September range from a nighttime low near 25°C (77°F) to a daytime high around 31°C (88°F) in Kourou.

Does French Guiana get a lot of rain in September?

Rain is generally moderate to light in French Guiana during September, with Kourou averaging close to 54 mm (2.1 in).

Is September a Good Time to Visit French Guiana?

We consider September to be one of the best times to travel to French Guiana. Typically, the climate in Kourou is very good.

Generally speaking, March, September and October provide good weather in Kourou. On the other hand, the weather in April, May, June, July and December tend to be less favorable.

Interested in more climate information?

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.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.

Discover French Guiana

Very few tourists make it to this small South American country. It's a shame, because nature in French Guiana is still pure and unspoiled.

Must visit in French Guiana →