October weather forecast
Cayenne, French Guiana

As September’s spell fades, October in Cayenne, French Guiana, ushers in more moisture. Even though increased rainfall graces the city, the heavy downpours from the start of the year remain absent. The periodic showers bring fresher hues to the city's green landscapes. However, the sea retains its moderate temperature, offering relief for outdoor enthusiasts. A minor increase in rainfall to 63mm (2.48") implies the gradual welcoming of a more primitive weather pattern.

Temperature

Cayenne, French Guiana, experiences its highest temperatures in October, with an average peak of 32.2°C (90°F) and a low of 22.3°C (72.1°F).

Rainfall

In Cayenne, during October, the rain falls for 7.6 days and regularly aggregates up to 63mm (2.48") of precipitation. 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, in October, the average water temperature is 28.5°C (83.3°F).
Note: Ideal surface water temperatures for any water activity fall between 25°C (77°F) and 29°C (84.2°F), offering maximum enjoyment for lengthened periods.

Daylight

In Cayenne, the average length of the day in October is 12h and 1min.
On the first day of October in Cayenne, sunrise is at 06:16 and sunset at 18:20. On the last day of the month, sunrise is at 06:14 and sunset at 18:11 -03.

Sunshine

In Cayenne, the average sunshine in October is 8.1h.

UV index

The 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 reading of 11, and higher, represents an extreme threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In October, a daily maximum UV index of 12 leads to the following instructions:
Take all critical precautions, unprotected skin might burn swiftly. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Boost your sun resistance with garments that are densely woven yet spacious. Even if the day is cloudy, sunscreen with SPF of at least 30 should be applied generously and reapplied often, particularly after swimming or outdoor exercise. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.