Climate Overview
The climate in Tumaco is hot. The average annual temperature is 26°C and approximately 3250mm of precipitation falls per year. Tumaco receives a notable amount of rainfall throughout the year, including during its driest month. Tumaco sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Tumaco has relatively stable temperatures year-round, staying within a 4°C range. The warmest month is May, when average highs reach 28°C and the mean temperature sits around 27°C. September is the coolest month, with minimum temperatures around 24°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows.
Precipitation
Tumaco is a very wet location, receiving approximately 3250mm of precipitation annually, which averages out to around 271mm per month. The wettest month is January, averaging 510mm of rainfall. May and December also tend to see above-average precipitation. The driest month is November, with just 139mm. That's 371mm less than January, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.
Wind
Tumaco is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, 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 2km/h gap between the calmest and windiest months.
Seasons
92 days until Autumn
It is currently summer in Tumaco, which began on June 21, 2026. Tumaco sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in May at around 28°C, while the coldest stretch bottoms out in September near 24°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.
Spring
Temperatures range from 25 to 28°C. Rainfall is heavy, totalling around 893mm across the season with a monthly average of 298mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 24 to 28°C. Rainfall is heavy, totalling around 705mm across the season with a monthly average of 235mm. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 24 to 27°C. Rainfall is heavy, totalling around 471mm across the season with a monthly average of 157mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 24 to 28°C. Rainfall is heavy, totalling around 1181mm across the season with a monthly average of 394mm. Winds are generally light, averaging 3km/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 Tumaco 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.
