Climate Chart of Cayenne, French Guiana

Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023

Climate overview

Temperature

Monthly mean temperatures are warm throughout the year in this record, with an unweighted mean across the monthly means of 26.1 °C. The coolest monthly means occur in January / February at 25.3 °C, and the warmest occurs in October at 27.5 °C. These are averages for whole months, not daytime maximum temperatures, so they do not describe the full range visitors may experience on individual days.

Rain

Mean daily rainfall ranges from October at 2.47 mm/day to May at 18.64 mm/day; the unweighted mean across monthly means is 9.98 mm/day. These figures describe average rainfall per day within each month, not monthly totals, and they do not show how often rain falls or how rainfall is distributed from day to day. The monthly averages are useful for comparing typical rainfall amounts, but cannot guarantee dry or wet weather on a particular visit.

Sunshine

Average daily sunshine duration is September at 10.85 hours/day and May at 7.49 hours/day, with an unweighted mean across the monthly means of 9.06 hours/day. This gives a month-by-month guide to average sunshine hours, rather than a promise of clear skies on any given day. Sunshine duration is also not the same as day length, so it should be treated as one planning guide rather than a measure of all available daylight.

Best Travel Time Guide for Cayenne, French Guiana: Ideal Seasons and Weather Insights

For visitors prioritising lower average rainfall, October is the criterion-led option in these figures, with mean daily rainfall of 2.47 mm/day; this does not guarantee rain-free days or indicate how frequently rain occurs. Anyone travelling in May, when mean daily rainfall is 18.64 mm/day, should allow for rain in outdoor plans and pack suitable protection. These averages compare typical amounts, not the conditions of a specific forecast. Those who prefer cooler monthly-average conditions can use January / February, when the monthly mean temperature is 25.3 °C, as a reference point; it is not a daytime high or a guarantee of how an individual day will feel. For outdoor sightseeing planned around sunshine, September averages 10.85 hours/day of sunshine per day, while May averages 7.49 hours/day. These sunshine figures describe duration rather than day length and cannot ensure clear conditions, so keep plans flexible.

Climate Data Overview for Cayenne, French Guiana

Explore the comprehensive climate data for Cayenne, French Guiana. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.

• See also climate change in Cayenne
• Explore the climate in French Guiana