Climate averages 1991–2020
Riohacha weather
in September.
A hot, wet month: the 7th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Riohacha: daytime highs average 31.2°C and nights cool to about 24.8°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 165 mm of rain on roughly 22 days, which makes September a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 12 min on an average September day.
The nearest other city in this atlas is Maicao (75 km away). In September its highs average 31.5°C, about as warm as Riohacha, with 153 mm of rain.
Among the 46 cities listed in Colombia, Riohacha ranks 5th of 46 for the warmest September highs and 19th of 46 for the driest September (rainfall, lowest first). The mean September high of those 46 cities is 26.4°C; Riohacha is 4.7°C warmer than that mean.
From September to October, average highs fall by 1.3°C to 29.9°C, and monthly rainfall rises from 165 mm to 189 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
Riohacha climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.3°C23.7°C | 23.7°C | 13 | 3.7 | 11.512 h |
| February | 30.9°C23.9°C | 23.9°C | 10 | 2.4 | 11.812 h |
| March | 31.4°C24.2°C | 24.2°C | 17 | 4.2 | 12.112 h |
| April | 31.6°C24.9°C | 24.9°C | 48 | 9.5 | 12.412 h |
| May | 31.4°C25.2°C | 25.2°C | 139 | 17.5 | 12.613 h |
| June | 32.0°C25.5°C | 25.5°C | 81 | 12.4 | 12.813 h |
| July | 32.8°C25.5°C | 25.5°C | 49 | 8.7 | 12.713 h |
| August | 32.7°C25.4°C | 25.4°C | 97 | 15.6 | 12.513 h |
| September, selected | 31.2°C24.8°C | 24.8°C | 165 | 22.4 | 12.212 h |
| October | 29.9°C24.3°C | 24.3°C | 189 | 25.4 | 11.912 h |
| November | 29.4°C24.2°C | 24.2°C | 127 | 19.8 | 11.612 h |
| December | 29.7°C24.0°C | 24.0°C | 45 | 9.9 | 11.511 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
- Maicao in SeptemberColombia · 75 kmHigh 31.5°C · Low 24.8°C · 153 mm rain
- Valledupar in SeptemberColombia · 126 kmHigh 28.4°C · Low 22.8°C · 207 mm rain
- Santa Marta in SeptemberColombia · 144 kmHigh 28.3°C · Low 25.2°C · 140 mm rain
- La Villa del Rosario in SeptemberVenezuela · 150 kmHigh 32.6°C · Low 24.2°C · 109 mm rain
- La Concepción in SeptemberVenezuela · 156 kmHigh 31.4°C · Low 25.1°C · 105 mm rain
- Ciénaga in SeptemberColombia · 158 kmHigh 28.7°C · Low 24.3°C · 309 mm rain
- Machiques in SeptemberVenezuela · 169 kmHigh 32.8°C · Low 24.8°C · 111 mm rain
- Maracaibo in SeptemberVenezuela · 173 kmHigh 31.5°C · Low 25.7°C · 164 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 Riohacha) is explained once on the Riohacha year overview and on the Sources, method and limits page.