April weather forecast
Cayenne, French Guiana

Sense the transition in Cayenne, French Guiana, as April brings some alterations. The sky remains frequently murky, yet the sunlight breaks through often, offering hours of brightness. The sea maintains its warm allure for swimmers and water sports enthusiasts. However, intermittent bouts of thunderstorms still occur, maintaining soil fertility for vegetation. Notably, the month’s rainfall level hits 448mm (17.64"), marking a resurgence from the declining trend in February and March.

Temperature

April in Cayenne, French Guiana, brings an average high-temperature of a still moderately hot 29.9°C (85.8°F), nearly identical to the preceding month. Cayenne's temperature tends to fall to an average low of 23.7°C (74.7°F) during the nights of April.

Rainfall

In Cayenne, in April, during 22.2 rainfall days, 448mm (17.64") of precipitation is typically accumulated. In Cayenne, during the entire year, the rain falls for 221.1 days and collects up to 3516mm (138.43") of precipitation.

Sea temperature

In Cayenne, the average seawater temperature in April is 27.8°C (82°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.

Daylight

In Cayenne, the average length of the day in April is 12h and 14min.
On the first day of April, sunrise is at 06:27 and sunset at 18:38. On the last day of the month, sunrise is at 06:17 and sunset at 18:35 -03.

Sunshine

In April, the average sunshine in Cayenne is 3.9h.

UV index

January through June, August through November, with an average maximum UV index of 12, are months with the highest UV index in Cayenne. A UV Index of 11, and more, symbolizes an extreme health hazard from exposure to the Sun's UV rays for the average person.
Note: In April, a regular UV index of 12 translates into these guidelines:
Employ all critical precautions. Guarding against sun damage is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. After every outdoor workout or swim, liberally apply and frequently reapply a broad-spectrum SPF 30+ sunscreen. Be cautious! Sand and water surfaces make the Sun's UV rays more potent.