Climate Overview
The climate in San Carlos de Rio Negro Airport is hot. The average annual temperature is 26°C and approximately 3431mm of precipitation falls per year. San Carlos de Rio Negro Airport receives a notable amount of rainfall throughout the year, including during its driest month. San Carlos de Rio Negro Airport sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
San Carlos de Rio Negro Airport has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is September, when average highs reach 31°C and the mean temperature sits around 27°C. July 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 7°C between highs and lows.
Precipitation
San Carlos de Rio Negro Airport is a very wet location, receiving approximately 3431mm of precipitation annually, which averages out to around 286mm per month. The wettest month is May, averaging 462mm of rainfall. June and July also tend to see above-average precipitation. The driest month is September, with just 184mm. That's 277mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.
Wind
San Carlos de Rio Negro Airport is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in San Carlos de Rio Negro Airport, which began on March 20, 2026. San Carlos de Rio Negro Airport sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in September at around 31°C, while the coldest stretch bottoms out in July near 23°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 23 to 30°C. Rainfall is heavy, totalling around 1077mm across the season with a monthly average of 359mm. Winds are generally light, averaging 7km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 23 to 30°C. Rainfall is heavy, totalling around 1066mm across the season with a monthly average of 355mm. Winds are generally light, averaging 7km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 31°C. Rainfall is heavy, totalling around 633mm across the season with a monthly average of 211mm. Winds are generally light, averaging 7km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 23 to 31°C. Rainfall is heavy, totalling around 656mm across the season with a monthly average of 219mm. Winds are generally light, averaging 7km/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 San Carlos de Rio Negro Airport 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.
