Climate Overview
The climate in Kourou is hot. The average annual temperature is 28°C and approximately 1041mm of precipitation falls per year. September is the wettest month, receiving around 208mm of rainfall. Kourou sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Kourou sees moderate temperature variation throughout the year, ranging from 19°C to 37°C. February is the hottest month, with daytime highs reaching 37°C and an average of 29°C. January is the coolest month, with minimum temperatures around 19°C and an average of 27°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between January and February, with a 3°C shift in average temperatures.
Precipitation
Kourou is a moderately rainy area, receiving approximately 1041mm of precipitation annually, which averages out to around 87mm per month. The wettest month is September, averaging 208mm of rainfall. August and July also tend to see above-average precipitation. The driest month is December, with just 1mm. That's 207mm less than September, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
Kourou is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 0km/h gap between the calmest and windiest months.
Seasons
93 days until Autumn
It is currently summer in Kourou, which began on June 21, 2026. Kourou sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in February at around 37°C, while the coldest stretch bottoms out in January near 19°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 24 to 37°C. Precipitation is moderate at around 227mm for the season, averaging 76mm per month. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 23 to 32°C. Rainfall is heavy, totalling around 464mm across the season with a monthly average of 155mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 34°C. Rainfall is heavy, totalling around 334mm across the season with a monthly average of 111mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 19 to 37°C. Precipitation is minimal, with only around 15mm for the entire season. Winds are generally light, averaging 2km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Kourou based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
