Cayenne, French Guiana Climate Guide to the Average Weather & Temperatures with Graphs Elucidating Sunshine and Rainfall Data & Information about Wind Speeds & Humidity:

• Cayenne, French Guiana latitude & longitude; 4°50'N 52°22'W.
• Altitude; 9 m (30 ft).
• The average temperature in Cayenne, French Guiana is 26.8 °C (80 °F).
• The range of average monthly temperatures is 1.5 °C.
• The warmest average max/ high temperature is 32 °C (90 °F) in August, September & October.
• The coolest average min/ low temperature is 23 °C (73 °F) in January to March & May to December.
• Cayenne, French Guiana receives on average 3744 mm (147.4 in) of precipitation annually or 312 mm (12.3 in) each month.
• On balance there are 212 days annually on which greater than 0.1 mm (0.004 in) of precipitation (rain, sleet, snow or hail) occurrs or 18 days on an average month.
• The month with the driest weather is September when on balance 32 mm (1.3 in) of rain, sleet, hail or snow falls across 6 days.
• The month with the wettest weather is May when on balance 590 mm (23.2 in) of rain, sleet, hail or snow falls across 25 days.
• Mean relative humidity for an average year is recorded as 76.5% and on a monthly basis it ranges from 69% in September, October to 83% in May.
• There is an average range of hours of sunshine in Cayenne, French Guiana of between 4.0 hours per day in February and 8.7 hours per day in September.
• On balance there are 2224 sunshine hours annually and approximately 6.1 sunlight hours for each day.
• On balance there are 0 days annually registering frost in Cayenne, French Guiana and in January there are on average 0 days with frost.

Cayenne, French Guiana Climate Graph (Metric | Imperial units)

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Cayenne, French Guiana Weather Averages

Cayenne, French Guiana Climograph/ Climate Chart (imperial)

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Cayenne, French Guiana Temperatures in Farenheit