Climate averages 1991–2020
Tumaco weather
in September.
A warm, very wet month: the 9th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Tumaco: daytime highs average 26.4°C and nights cool to about 23.9°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 230 mm of rain on roughly 26 days, which makes September a very wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 07 min on an average September day.
The nearest other city in this atlas is Esmeraldas (133 km away). In September its highs average 27.6°C, 1.2°C warmer than Tumaco, with 67 mm of rain.
Among the 46 cities listed in Colombia, Tumaco ranks 28th of 46 for the warmest September highs and 31st of 46 for the driest September (rainfall, lowest first). The mean September high of those 46 cities is 26.4°C; Tumaco is level with that mean.
From September to October, average highs fall by 0.1°C to 26.3°C, and monthly rainfall rises from 230 mm to 269 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Tumaco climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.5°C23.9°C | 23.9°C | 461 | 28.7 | 12.012 h |
| February | 27.0°C24.0°C | 24.0°C | 330 | 24.1 | 12.112 h |
| March | 27.2°C24.3°C | 24.3°C | 293 | 23.9 | 12.112 h |
| April | 27.4°C24.4°C | 24.4°C | 379 | 25.6 | 12.212 h |
| May | 27.3°C24.4°C | 24.4°C | 404 | 28.4 | 12.212 h |
| June | 27.0°C24.2°C | 24.2°C | 288 | 27.0 | 12.212 h |
| July | 26.7°C24.0°C | 24.0°C | 248 | 27.4 | 12.212 h |
| August | 26.6°C24.0°C | 24.0°C | 210 | 27.1 | 12.212 h |
| September, selected | 26.4°C23.9°C | 23.9°C | 230 | 25.8 | 12.112 h |
| October | 26.3°C24.0°C | 24.0°C | 269 | 25.5 | 12.112 h |
| November | 26.2°C24.0°C | 24.0°C | 199 | 21.9 | 12.012 h |
| December | 26.3°C24.0°C | 24.0°C | 313 | 25.6 | 12.012 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Esmeraldas in SeptemberEcuador · 133 kmHigh 27.6°C · Low 22.8°C · 67 mm rain
- Tulcán in SeptemberEcuador · 162 kmHigh 16.5°C · Low 8.7°C · 109 mm rain
- Ipiales in SeptemberColombia · 167 kmHigh 15.7°C · Low 8.2°C · 109 mm rain
- Ibarra in SeptemberEcuador · 177 kmHigh 21.9°C · Low 10.7°C · 75 mm rain
- Pasto in SeptemberColombia · 180 kmHigh 18.9°C · Low 10.3°C · 99 mm rain
- Santo Domingo de los Colorados in SeptemberEcuador · 231 kmHigh 24.1°C · Low 19.0°C · 87 mm rain
- Popayán in SeptemberColombia · 253 kmHigh 23.2°C · Low 14.1°C · 145 mm rain
- Pitalito in SeptemberColombia · 305 kmHigh 22.7°C · Low 13.4°C · 200 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Tumaco) is explained once on the Tumaco year overview and on the Sources, method and limits page.