Weather in Guyane

Calculated from weather data of Cayenne – Félix Eboué Airport (SOCA) between 2020 and 2024.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	29.1	30.3	27.8	28.6	29.0	29.6
February	29.0	30.6	27.8	27.8	29.0	29.6
March	29.7	31.3	29.8	28.1	29.6	30.1
April	29.5	30.6	29.1	28.8	29.3	29.5
May	29.5		29.5	29.3	29.6	29.3
June	30.4		30.6	30.3	30.3	30.5
July	30.8		31.1	30.8	30.8	31.3
August	31.9		32.6	31.8	31.8	31.8
September	32.6		33.2	32.5	32.2	32.5
October	32.5		33.7	31.8	32.2	32.6
November	31.3		32.0	31.0	30.8	30.5
December	29.9		31.1	29.6	29.3	30.6
Average	30.5	30.7	30.7	30.1	30.3	30.6

1st highest temperature of French Guiana

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	23.4	24	23	23	24	24
February	23.4	23	23	23	24	24
March	23.6	25	23	23	23	24
April	24.0	25	23	24	24	24
May	23.6		24	23	23	24
June	23.1		22	23	23	24
July	22.9		22	23	23	23
August	22.8		23	22	23	23
September	23.1		23	23	23	23
October	22.9		23	23	23	23
November	23.5		24	23	24	24
December	23.6		24	23	24	23
Average	23.4	24.0	23.0	23.0	23.4	23.5

1st lowest temperature of French Guiana

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
30 °C or warmer	85	207	171	185	202
25 °C or warmer	121	359	343	364	364
20 °C or warmer	121	363	354	365	366
0 °C or colder	0	0	0	0	0

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	56.8	49	67	74	52	47
February	56.6	46	88	70	63	38
March	47.2	42	46	76	46	31
April	61.7	61	62	75	56	62
May	67.7		69	70	66	71
June	56.2		52	57	58	58
July	51.0		58	53	48	50
August	36.9		22	39	46	38
September	25.7		16	28	46	31
October	27.6		10	36	51	35
November	45.4		32	60	53	51
December	58.4		45	62	65	55
Average	49.5	49.4	47.0	58.1	54.2	47.2

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (km/h)

Month	Average	2024	2023	2022	2021	2020
January	14.6	18	12	12	14	16
February	15.8	18	13	12	18	18
March	15.9	17	16	14	15	15
April	14.2	16	12	14	12	13
May	11.8		12	12	11	11
June	8.7		9	9	9	8
July	8.3		10	9	8	8
August	10.4		12	10	10	9
September	12.1		12	13	11	13
October	13.1		14	12	12	13
November	12.4		15	10	12	10
December	13.1		13	11	12	12
Average	13.0	17.0	12.3	11.5	11.9	12.2

1st highest wind speed of French Guiana

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	NE	NE	NE	NE	NE
February	NE	NE	NE	NE	NE
March	NE	NE	NE	NE	NE
April	NE	NE	NE	NE	NE
May		E	NE	E	NE
June		E	E	E	NE
July		E	E	E	E
August		E	E	E	E
September		E	E	NE	E
October		E	E	E	E
November		E	E	NE	E
December		E	NE	E	NE

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Guyane weather Q&A

What is the warmest month in Guyane?

The warmest month is September with an average temperature of 33 °C over the past years.

What is the coldest month in Guyane?

The coldest month is February with an average daytime temperature of 29 °C in the past few years.

Which month is the wettest in Guyane?

Chance of precipitation is the highest in May with a probability of around 67.8 %.

Which month is the driest in Guyane?

The least rainfall and snow can be expected in September. The probability is about 25.8 %.