Climate Overview
The climate in Cosrou is hot. The average annual temperature is 27°C and approximately 1460mm of precipitation falls per year. Cosrou receives a notable amount of rainfall throughout the year, including during its driest month. Cosrou sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Cosrou has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is Marzo, when average highs reach 33°C and the mean temperature sits around 28°C. Agosto is the coolest month, with minimum temperatures around 23°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows.
Precipitation
Cosrou is a fairly wet location, receiving approximately 1460mm of precipitation annually, which averages out to around 122mm per month. The wettest month is June, averaging 368mm of rainfall. May and October also tend to see above-average precipitation. The driest month is January, with just 34mm. That's 334mm less than June, 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
Cosrou is mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months.
Seasons
3 days until Spring
It is currently winter in Cosrou, which began on December 21, 2026. Cosrou sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in Marzo at around 33°C, while the coldest stretch bottoms out in Agosto near 23°C. Spring is next, beginning on March 20, 2026 — 3 days from now.
Spring
Temperatures range from 25 to 33°C. Rainfall is heavy, totalling around 392mm across the season with a monthly average of 131mm. Winds are generally light, averaging 14km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 23 to 29°C. Rainfall is heavy, totalling around 547mm across the season with a monthly average of 182mm. Winds are generally light, averaging 14km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 24 to 31°C. Rainfall is heavy, totalling around 380mm across the season with a monthly average of 127mm. Winds are generally light, averaging 12km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 24 to 33°C. Rainfall is relatively light, with around 142mm over the season and a monthly average of 47mm. Winds are generally light, averaging 12km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Cosrou is during Agosto, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 67mm per month. By contrast, Marzo can be uncomfortably hot with temperatures reaching 33°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Cosrou 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.