, hot and humid throughout the year, with a relatively dry, slightly warmer season from July to November and a rainy season from December to June, during which the rains are very abundant, at monsoon level. Sometimes, in February or March, there can be a period of fairly good weather for one or two weeks, "the short summer of March".
The city is the capital of French Guiana and is located in the central part of the coast, at almost 5 degrees north latitude, between the mouths of the rivers Cayenne to the north and Mahury to the south, where the port of Dégrad des Cannes is located.
Off the city are some small islands, although the more famous Devil's Island is further north, off the city of Kourou.
Since the dry season is short and not very pronounced, the area around the city, and French Guiana in general, is covered by rainforest. However, the driest months are September and October.
From January to April, the north-east trade winds blow at a moderate intensity, while from June to August, the wind is weaker.
. Here are the average temperatures.
January, the least warm month of the year, is generally a warm to hot, muggy month. The average temperature is of
26.4 °C, with a minimum of
23.4 °C and a maximum of
29.4 °C.
On the coldest nights of the month, the temperature usually drops to around
21 °C. However, it dropped to
18.6 °C in January 2014.
On the warmest days of the month, the temperature usually reaches around
31 °C. However, it reached
32.5 °C in January 2005.
Precipitation amounts to
350 mm, distributed over 25 days.
The day lasts on average 11 hours and 55 minutes.
There are on average 3 hours of sunshine per day. So, the sun shines 26% of the time.
The average humidity is 85%. Hence, the air is normally humid.
The average wind speed is of
10.4 kph.
The average sea temperature is of
27.1 °C. Therefore, the sea is pleasantly warm and allows long swims.
February, the least warm month of the year, is generally a warm to hot, muggy month. The average temperature is of
26.4 °C, with a minimum of
23.5 °C and a maximum of
29.3 °C.
On the coldest nights of the month, the temperature usually drops to around
21 °C. However, it dropped to
19.7 °C in February 2016.
On the warmest days of the month, the temperature usually reaches around
31 °C. However, it reached
32.3 °C in February 1998.
Precipitation amounts to
330 mm, distributed over 22 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 3.5 hours of sunshine per day. So, the sun shines 28% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is of
11.8 kph.
The average sea temperature is of
27.2 °C. Therefore, the sea is pleasantly warm and allows long swims.
March is generally a warm to hot, muggy month. The average temperature is of
26.8 °C, with a minimum of
23.7 °C and a maximum of
29.8 °C.
On the coldest nights of the month, the temperature usually drops to around
21.5 °C. However, it dropped to
19.5 °C in March 2017.
On the warmest days of the month, the temperature usually reaches around
31 °C. However, it reached
32.2 °C in March 2010.
Precipitation amounts to
290 mm, distributed over 22 days.
The day lasts on average 12 hours and 5 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 32% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is of
11.7 kph.
The average sea temperature is of
27.4 °C. Therefore, the sea is pleasantly warm and allows long swims.
April is generally a warm to hot, muggy month. The average temperature is of
26.9 °C, with a minimum of
23.8 °C and a maximum of
30 °C.
On the coldest nights of the month, the temperature usually drops to around
22 °C. However, it dropped to
20.7 °C in April 2018.
On the warmest days of the month, the temperature usually reaches around
31.5 °C. However, it reached
33 °C in April 2010.
Precipitation amounts to
415 mm, distributed over 23 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 34% of the time.
The average humidity is 85%. Hence, the air is normally humid.
The average wind speed is of
10.3 kph.
The average sea temperature is of
27.7 °C. Therefore, the sea is pleasantly warm and allows long swims.
May is generally a warm to hot, muggy month. The average temperature is of
26.8 °C, with a minimum of
23.6 °C and a maximum of
30.1 °C.
On the coldest nights of the month, the temperature usually drops to around
22 °C. However, it dropped to
20.2 °C in May 2016.
On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
33.7 °C in May 2010.
Precipitation amounts to
580 mm, distributed over 27 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 32% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of
8.1 kph.
The average sea temperature is of
28 °C. Therefore, the sea is pleasantly warm and allows long swims.
June is generally a warm to hot, muggy month. The average temperature is of
26.8 °C, with a minimum of
23 °C and a maximum of
30.5 °C.
On the coldest nights of the month, the temperature usually drops to around
21.5 °C. However, it dropped to
20.7 °C in June 2014.
On the warmest days of the month, the temperature usually reaches around
32.5 °C. However, it reached
33.7 °C in June 2010.
Precipitation amounts to
395 mm, distributed over 25 days.
The day lasts on average 12 hours and 25 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 40% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of
6.1 kph.
The average sea temperature is of
28.3 °C. Therefore, the sea is pleasantly warm and allows long swims.
July is generally a warm to hot, muggy month. The average temperature is of
26.8 °C, with a minimum of
22.5 °C and a maximum of
31.1 °C.
On the coldest nights of the month, the temperature usually drops to around
21.5 °C. However, it dropped to
20.2 °C in July 2014.
On the warmest days of the month, the temperature usually reaches around
33 °C. However, it reached
33.9 °C in July 2010.
Precipitation amounts to
265 mm, distributed over 21 days.
The day lasts on average 12 hours and 25 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 86%. Hence, the air is normally humid.
The average wind speed is of
5.9 kph.
The average sea temperature is of
28.4 °C. Therefore, the sea is pleasantly warm and allows long swims.
August is generally a warm to hot, muggy month. The average temperature is of
27.2 °C, with a minimum of
22.5 °C and a maximum of
31.8 °C.
On the coldest nights of the month, the temperature usually drops to around
21 °C. However, it dropped to
20 °C in August 2014.
On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
34.2 °C in August 1998.
Precipitation amounts to
135 mm, distributed over 14 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 61% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is of
6.9 kph.
The average sea temperature is of
28.3 °C. Therefore, the sea is pleasantly warm and allows long swims.
September, the hottest month of the year, is generally a warm to hot, muggy month. The average temperature is of
27.4 °C, with a minimum of
22.5 °C and a maximum of
32.4 °C.
On the coldest nights of the month, the temperature usually drops to around
21 °C. However, it dropped to
19.5 °C in September 2016.
On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
35.2 °C in September 2017.
Precipitation amounts to
60 mm, distributed over 7 days.
The day lasts on average 12 hours and 5 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 70% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of
7.9 kph.
The average sea temperature is of
28.3 °C. Therefore, the sea is pleasantly warm and allows long swims.
October, the hottest month of the year, is generally a warm to hot, muggy month. The average temperature is of
27.4 °C, with a minimum of
22.4 °C and a maximum of
32.5 °C.
On the coldest nights of the month, the temperature usually drops to around
21 °C. However, it dropped to
19.9 °C in October 1998.
On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
35.1 °C in October 1999.
Precipitation amounts to
55 mm, distributed over 7 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of
8.1 kph.
The average sea temperature is of
28.2 °C. Therefore, the sea is pleasantly warm and allows long swims.
November is generally a warm to hot, muggy month. The average temperature is of
27.2 °C, with a minimum of
22.7 °C and a maximum of
31.7 °C.
On the coldest nights of the month, the temperature usually drops to around
21 °C. However, it dropped to
19.4 °C in November 2018.
On the warmest days of the month, the temperature usually reaches around
33 °C. However, it reached
34.2 °C in November 2008.
Precipitation amounts to
140 mm, distributed over 13 days.
The day lasts on average 11 hours and 55 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of
8.1 kph.
The average sea temperature is of
28 °C. Therefore, the sea is pleasantly warm and allows long swims.
December is generally a warm to hot, muggy month. The average temperature is of
26.7 °C, with a minimum of
23.1 °C and a maximum of
30.3 °C.
On the coldest nights of the month, the temperature usually drops to around
21 °C. However, it dropped to
19.4 °C in December 2012.
On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
34.1 °C in December 2004.
Precipitation amounts to
335 mm, distributed over 23 days.
The day lasts on average 11 hours and 50 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 39% of the time.
The average humidity is 85%. Hence, the air is normally humid.
The average wind speed is of
9.3 kph.
The average sea temperature is of
27.6 °C. Therefore, the sea is pleasantly warm and allows long swims.