Cayenne
French Guiana
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Cayenne, French Guiana

January, like December, in Cayenne, French Guiana, is a moderately hot winter month, with average temperature fluctuating between 29.1°C (84.4°F) and 23.3°C (73.9°F). January is the coldest month, with an average high-temperature of 29.1°C (84.4°F) and an average low-temperature of 23.3°C (73.9°F). In Cayenne, during January, the rain falls for 23.6 days and regularly aggregates up to 451.2mm (17.76") of precipitation. Weather in January »

The last month of the winter, February, is also a moderately hot month in Cayenne, French Guiana, with average temperature ranging between max 29.2°C (84.6°F) and min 23.4°C (74.1°F). In February, the average high-temperature is almost the same as in January - a still warm 29.2°C (84.6°F). Weather in February »

March, the first month of the spring, in Cayenne, is still a warm month, with temperature in the range of an average high of 29.6°C (85.3°F) and an average low of 23.5°C (74.3°F). In Cayenne, French Guiana, the average high-temperature is practically the same as in February - a still warm 29.6°C (85.3°F). Weather in March »

April, the same as March, is another warm spring month in Cayenne, French Guiana, with temperature in the range of an average high of 29.9°C (85.8°F) and an average low of 23.7°C (74.7°F). In April, the average high-temperature is almost the same as in March - a still moderately hot 29.9°C (85.8°F). Weather in April »

The last month of the spring, May, is another warm month in Cayenne, French Guiana, with average temperature ranging between max 29.9°C (85.8°F) and min 23.5°C (74.3°F). In Cayenne, the average high-temperature remains the same as in April - a still warm 29.9°C (85.8°F). Weather in May »

The first month of the summer, June, is a hot month in Cayenne, French Guiana, with average temperature varying between 22.9°C (73.2°F) and 30.2°C (86.4°F). In June, the average high-temperature is relatively the same as in May - a tropical 30.2°C (86.4°F). Weather in June »

July, the same as June, in Cayenne, French Guiana, is a hot summer month, with average temperature fluctuating between 22.4°C (72.3°F) and 30.8°C (87.4°F). In July, the average high-temperature is relatively the same as in June - a still hot 30.8°C (87.4°F). Weather in July »

August, the last month of the summer, in Cayenne, is another tropical month, with average temperature varying between 22.4°C (72.3°F) and 31.6°C (88.9°F). In Cayenne, the average high-temperature is essentially the same as in July - a still tropical 31.6°C (88.9°F). Weather in August »

The first month of the autumn, September, is still a tropical month in Cayenne, French Guiana, with average temperature varying between 32.1°C (89.8°F) and 22.2°C (72°F). In Cayenne, the average high-temperature in September is essentially the same as in August - a still hot 32.1°C (89.8°F). Weather in September »

October, like September, is a hot autumn month in Cayenne, French Guiana, with average temperature ranging between min 22.3°C (72.1°F) and max 32.2°C (90°F). October is the warmest month, with an average high-temperature of 32.2°C (90°F) and an average low-temperature of 22.3°C (72.1°F). Weather in October »

November, the last month of the autumn, in Cayenne, is another tropical month, with average temperature varying between 22.5°C (72.5°F) and 31.5°C (88.7°F). In November, the average high-temperature is relatively the same as in October - a still hot 31.5°C (88.7°F). Weather in November »

December, the first month of the winter, in Cayenne, is also a hot month, with temperature in the range of an average high of 30.1°C (86.2°F) and an average low of 23.1°C (73.6°F). In Cayenne, French Guiana, the average high-temperature in December is relatively the same as in November - a still hot 30.1°C (86.2°F). Weather in December »

What is the coldest month in Cayenne?

The coldest month in Cayenne is January, with an average high-temperature of 29.1°C (84.4°F) and an average low-temperature of 23.3°C (73.9°F).

How many days does it rain in Cayenne?

In Cayenne, during the entire year, the rain falls for 221.1 days and collects up to 3516.3mm (138.44") of precipitation.

What is the month with the least sunshine in Cayenne?

The month with the least sunshine in Cayenne, French Guiana, is January, with an average of 3h of sunshine.

When is the highest UV index in Cayenne?

Months with the highest UV index are January through June, August through November, with an average maximum UV index of 12.

What is the month with the coldest sea water in Cayenne?

February is the month with the coldest seawater in Cayenne, French Guiana, with an average sea temperature of 27.3°C (81.1°F).

What is the wettest month in Cayenne?

The month with the most rainfall in Cayenne, French Guiana, is May when the rain falls for 26.4 days and typically aggregates up to 579.4mm (22.81") of precipitation.

When are the longest days in Cayenne?

Months with the longest days are May through July, with an average of 12.4h of daylight.

What is the month with the lowest UV index in Cayenne?

July and December, with an average maximum UV index of 11, are months with the lowest UV index in Cayenne.

When is the sea warmest in Cayenne?

August is the month with the warmest seawater in Cayenne, with an average sea temperature of 28.7°C (83.7°F).

What is the driest month in Cayenne?

September is the month with the least rainfall in Cayenne. Rain falls for 7.1 days and accumulates 55.7mm (2.19") of precipitation.

What month has the most sunshine in Cayenne?

With an average of 8.5h of sunshine, September has the most sunshine of the year.

What is the warmest month in Cayenne?

The warmest month in Cayenne, French Guiana, is October, with an average high-temperature of 32.2°C (90°F) and an average low-temperature of 22.3°C (72.1°F).

What is the month with the shortest days in Cayenne?

With an average of 11.8h of daylight, December has the shortest days of the year in Cayenne, French Guiana.
Average temperature - Cayenne, French Guiana
Average rainfall - Cayenne, French Guiana

The wettest month (with the highest rainfall) is May (579.4mm).
The driest month (with the least rainfall) is September (55.7mm).

Average rainfall days - Cayenne, French Guiana

The month with the highest number of rainy days is May (26.4 days).
The month with the least rainy days is September (7.1 days).

Average sea temperature - Cayenne, French Guiana

The best month for swimming (with the highest average sea temperature) is August (28.7°C).
The coldest month (with the lowest average sea temperature) is February (27.3°C).

Average daylight / Average sunshine - Cayenne, French Guiana

Months with the longest days are May, June and July (Average daylight: 12.4h).
The month with the shortest days is December (Average daylight: 11.8h).

The month with the most sunshine is September (Average sunshine: 8.5h).
The month with the least sunshine is January (Average sunshine: 3h).

Average UV index - Cayenne, French Guiana

Months with the highest UV index are January, February, March, April, May, June, August, September, October and November (UV index 12).
Months with the lowest UV index are July and December (UV index 11).