Monthly climate in Sinnamary, French Guiana

Under the Köppen–Geiger climate classification Sinnamary features a tropical rainforest climate (Af). Temperatures typically range between 26 °C (79 °F) and 27 °C (82 °F) through the year, but rarely can drop to 23 °C (74 °F) or can rise to as high as 30 °C (87 °F). The average annual precipitation amounts to about 2670 mm (105.1 inches) and receives 294 rainy days on the 1 mm (0.04 inches) threshold annually. Sinnamary enjoys an average of 3623 hours of sunshine throughout the year, and daylight varies from 11 hours 48 minutes to 12 hours 24 minutes per day.

Monthly average temperatures in Sinnamary, French Guiana

The warmest months in Sinnamary are August, September and October, with daily mean temperatures ranging from 27 to 27 °C (81 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 26 to 26 °C (79 - 79 °F) throughout the day. On average each year, Sinnamary experiences 329 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average precipitation in Sinnamary, French Guiana

Sinnamary usually has the most precipitation in April, May and June, with an average of 28 rainy days and 411 mm (16.2 inches) of precipitation per month. The driest months in Sinnamary are August, September and October. On average, 80 mm (3.2 inches) of precipitation falls during these months.

Monthly sunshine hours in Sinnamary, French Guiana

The sunniest months in Sinnamary are August, September and October, when the sun shines an average of 11 hours 8 minutes a day. Least sunny months in Sinnamary: January, February and May receive an average of 8 hours 43 minutes of sunshine daily.

Solar UV radiation in Sinnamary, French Guiana

Sinnamary experiences the highest level of ultraviolet (UV) radiation in March, April and May, when the maximum UV index can reach values of 14 - 16, which corresponds to the Extreme category of sun exposure. June, July and December are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 13. For more detailed information, check out our hourly Sinnamary UV Index data.