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

April weather forecast and climate
Cayenne, French Guiana

Palm trees in a botanical garden in Cayenne, French Guiana, overlooking green fields under clear skies
Palm trees in a botanical garden in Cayenne, French Guiana, overlooking green fields under clear skies
April, like March, in Cayenne, French Guiana, is another warm spring month, 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).

Temperature

In April, the average high-temperature is essentially the same as in March - a still moderately hot 29.9°C (85.8°F). In Cayenne, French Guiana, the average low-temperature is 23.7°C (74.7°F).

Rainfall

In Cayenne, in April, it is raining for 22.2 days, with typically 448.4mm (17.7") of accumulated precipitation. In Cayenne, during the entire year, the rain falls for 221.1 days and collects up to 3516.3mm (138.4") of precipitation.

Sea temperature

In Cayenne, the average seawater temperature is 27.8°C (82°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Cayenne, the average length of the day is 12.2h.

Sunshine

In Cayenne, the average sunshine is 3.9h.

UV index

Months with the highest UV index in Cayenne are January through June, August through November, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 12 interpret into the following advice:
Take all necessary precautions, as unprotected skin can burn in minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in April in Cayenne?

In April, in Cayenne, French Guiana, the average high-temperature is 29.9°C (85.8°F), and the average low-temperature is 23.7°C (74.7°F).

How much does it rain in Cayenne in April?

In Cayenne, French Guiana, during April, the rain falls for 22.2 days and regularly aggregates up to 448.4mm (17.7") of precipitation.

What is the sea water temperature in April in Cayenne?

In Cayenne, French Guiana, the average seawater temperature in April is 27.8°C (82°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Cayenne have in April?

In April, the average length of the day is 12.2h.

How long on average sun shines in April in Cayenne?

The average sunshine in April is 3.9h.

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 UV index intensity in April in Cayenne?

The average daily maximum UV index in April is 12. A UV Index estimate of 11, and higher, represents an excessive health risk from unsafe exposure to the Sun's UV rays.
Average temperature in April - Cayenne, French Guiana
  • Average high temperature in April: 29.9°C

The warmest month (with the highest average high temperature) is October (32.2°C).
The month with the lowest average high temperature is January (29.1°C).

  • Average low temperature in April: 23.7°C

The month with the highest average low temperature is April (23.7°C).
The coldest month (with the lowest average low temperature) is September (22.2°C).

Average rainfall in April - Cayenne, French Guiana
  • Average rainfall in April: 448.4mm

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

Average rainfall days in April - Cayenne, French Guiana
  • Average rainfall days in April: 22.2 days

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

Average sea temperature in April - Cayenne, French Guiana
  • Average sea temperature in April: 27.8°C

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 in April / Average sunshine in April - Cayenne, French Guiana
  • Average daylight in April: 12.2h

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

  • Average sunshine in April: 3.9h

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

Average UV index in April - Cayenne, French Guiana
  • Average UV index in April: 12

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).