Cayenne weather by month

Check out Cayenne weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature
Rainfall
Sunshine & UV index

Temperature in Cayenne (°C)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	29	29	29	30	29	30	31	32	32	32	31	30
Min temperature (night-time)	23	23	23	24	23	23	23	22	23	23	23	23
Heat & Humidity	H	H	H	H	H	VH	VH	VH	VH	VH	VH	H
Sea temperature	27	27	27	27	27	28	28	28	28	28	28	27

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Cayenne

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	4	4	5	5	4	5	7	8	8	8	7	5
Daily hours of daylight	12	12	12	12	12	12	12	12	12	12	12	12
UV Index (Maximum)	11	11	11	11	11	11	11	11	11	11	11	11

Rainfall in Cayenne

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	20	16	22	21	26	23	18	9	4	4	11	18
Average monthly rainfall (mm)	367	306	374	439	544	412	200	96	40	46	124	294

More about Cayenne

Cayenne by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for French Guiana

The climate guide for French Guiana, represented by Cayenne, (Cayenne) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Cayenne?

Cayenne has a hot tropical climate with a short dry season.

Cayenne weather in January

Expect daytime maximum temperatures of 29°C in Cayenne, French Guiana in January and high heat and humidity based on long-term weather averages. There are 4 hours of sunshine per day on average with 20 days with some rainfall and typically 367 mm of rainfall in the month.

29
29°C max day temperature
4
4 hours of sunshine per day
20
20 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
H
High heat & humidity
367
367 mm of monthly rainfall
11
11+ (Extreme) UV index
27
27°C sea temperature

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Cayenne weather in February

Expect daytime maximum temperatures of 29°C in Cayenne, French Guiana in February and high heat and humidity based on long-term weather averages. There are 4 hours of sunshine per day on average with 16 days with some rainfall and typically 306 mm of rainfall in the month.

29
29°C max day temperature
4
4 hours of sunshine per day
16
16 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
H
High heat & humidity
306
306 mm of monthly rainfall
11
11+ (Extreme) UV index
27
27°C sea temperature

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Cayenne weather in March

Expect daytime maximum temperatures of 29°C in Cayenne, French Guiana in March and high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 22 days with some rainfall and typically 374 mm of rainfall in the month.

29
29°C max day temperature
5
5 hours of sunshine per day
22
22 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
H
High heat & humidity
374
374 mm of monthly rainfall
11
11+ (Extreme) UV index
27
27°C sea temperature

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Cayenne weather in April

Expect daytime maximum temperatures of 30°C in Cayenne, French Guiana in April and high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 21 days with some rainfall and typically 439 mm of rainfall in the month.

30
30°C max day temperature
5
5 hours of sunshine per day
21
21 days with some rainfall
24
24°C min night temperature
12
12 hours of daylight per day
H
High heat & humidity
439
439 mm of monthly rainfall
11
11+ (Extreme) UV index
27
27°C sea temperature

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Cayenne weather in May

Expect daytime maximum temperatures of 29°C in Cayenne, French Guiana in May and high heat and humidity based on long-term weather averages. There are 4 hours of sunshine per day on average with 26 days with some rainfall and typically 544 mm of rainfall in the month.

29
29°C max day temperature
4
4 hours of sunshine per day
26
26 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
H
High heat & humidity
544
544 mm of monthly rainfall
11
11+ (Extreme) UV index
27
27°C sea temperature

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Cayenne weather in June

Expect daytime maximum temperatures of 30°C in Cayenne, French Guiana in June and very high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 23 days with some rainfall and typically 412 mm of rainfall in the month.

30
30°C max day temperature
5
5 hours of sunshine per day
23
23 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
VH
Very High heat & humidity
412
412 mm of monthly rainfall
11
11+ (Extreme) UV index
28
28°C sea temperature

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Cayenne weather in July

Expect daytime maximum temperatures of 31°C in Cayenne, French Guiana in July and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 18 days with some rainfall and typically 200 mm of rainfall in the month.

31
31°C max day temperature
7
7 hours of sunshine per day
18
18 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
VH
Very High heat & humidity
200
200 mm of monthly rainfall
11
11 (Extreme) UV index
28
28°C sea temperature

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Cayenne weather in August

Expect daytime maximum temperatures of 32°C in Cayenne, French Guiana in August and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 96 mm of rainfall in the month.

32
32°C max day temperature
8
8 hours of sunshine per day
9
9 days with some rainfall
22
22°C min night temperature
12
12 hours of daylight per day
VH
Very High heat & humidity
96
96 mm of monthly rainfall
11
11+ (Extreme) UV index
28
28°C sea temperature

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Cayenne weather in September

Expect daytime maximum temperatures of 32°C in Cayenne, French Guiana in September and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 40 mm of rainfall in the month.

32
32°C max day temperature
8
8 hours of sunshine per day
4
4 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
VH
Very High heat & humidity
40
40 mm of monthly rainfall
11
11+ (Extreme) UV index
28
28°C sea temperature

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Cayenne weather in October

Expect daytime maximum temperatures of 32°C in Cayenne, French Guiana in October and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 46 mm of rainfall in the month.

32
32°C max day temperature
8
8 hours of sunshine per day
4
4 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
VH
Very High heat & humidity
46
46 mm of monthly rainfall
11
11+ (Extreme) UV index
28
28°C sea temperature

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Cayenne weather in November

Expect daytime maximum temperatures of 31°C in Cayenne, French Guiana in November and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 11 days with some rainfall and typically 124 mm of rainfall in the month.

31
31°C max day temperature
7
7 hours of sunshine per day
11
11 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
VH
Very High heat & humidity
124
124 mm of monthly rainfall
11
11+ (Extreme) UV index
28
28°C sea temperature

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Cayenne weather in December

Expect daytime maximum temperatures of 30°C in Cayenne, French Guiana in December and high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 18 days with some rainfall and typically 294 mm of rainfall in the month.

30
30°C max day temperature
5
5 hours of sunshine per day
18
18 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
H
High heat & humidity
294
294 mm of monthly rainfall
11
11 (Extreme) UV index
27
27°C sea temperature

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