Climate averages 1991–2020
Santa Marta weather
in September.
A hot, wet month: the joint 2nd 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 Santa Marta: daytime highs average 28.3°C and nights cool to about 25.2°C. By daytime temperature it is the joint 2nd warmest of the 12 months.
Expect about 140 mm of rain on roughly 16 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 Ciénaga (26 km away). In September its highs average 28.7°C, about as warm as Santa Marta, with 309 mm of rain.
Among the 46 cities listed in Colombia, Santa Marta ranks 23rd of 46 for the warmest September highs and 16th of 46 for the driest September (rainfall, lowest first). The mean September high of those 46 cities is 26.4°C; Santa Marta is 1.9°C warmer than that mean.
From September to October, average highs fall by 0.4°C to 27.9°C, and monthly rainfall rises from 140 mm to 199 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
Santa Marta climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.9°C24.3°C | 24.3°C | 3.8 | 0.3 | 11.512 h |
| February | 27.0°C24.3°C | 24.3°C | 2.8 | 0.6 | 11.812 h |
| March | 27.2°C24.5°C | 24.5°C | 5.4 | 1.1 | 12.112 h |
| April | 27.7°C25.1°C | 25.1°C | 33 | 3.3 | 12.412 h |
| May | 28.1°C25.3°C | 25.3°C | 128 | 10.9 | 12.613 h |
| June | 28.4°C25.6°C | 25.6°C | 95 | 11.1 | 12.813 h |
| July | 28.1°C25.6°C | 25.6°C | 78 | 8.4 | 12.713 h |
| August | 28.3°C25.6°C | 25.6°C | 84 | 11.9 | 12.512 h |
| September, selected | 28.3°C25.2°C | 25.2°C | 140 | 16.4 | 12.212 h |
| October | 27.9°C24.8°C | 24.8°C | 199 | 19.8 | 11.912 h |
| November | 27.5°C25.0°C | 25.0°C | 129 | 12.1 | 11.612 h |
| December | 27.2°C24.9°C | 24.9°C | 22 | 2.7 | 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
- Ciénaga in SeptemberColombia · 26 kmHigh 28.7°C · Low 24.3°C · 309 mm rain
- Barranquilla in SeptemberColombia · 71 kmHigh 29.3°C · Low 25.8°C · 228 mm rain
- Soledad in SeptemberColombia · 72 kmHigh 29.7°C · Low 25.5°C · 228 mm rain
- Sabanalarga in SeptemberColombia · 104 kmHigh 30.0°C · Low 24.3°C · 251 mm rain
- Valledupar in SeptemberColombia · 134 kmHigh 28.4°C · Low 22.8°C · 207 mm rain
- Riohacha in SeptemberColombia · 144 kmHigh 31.2°C · Low 24.8°C · 165 mm rain
- Cartagena in SeptemberColombia · 170 kmHigh 29.5°C · Low 24.8°C · 210 mm rain
- Maicao in SeptemberColombia · 214 kmHigh 31.5°C · Low 24.8°C · 153 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 Santa Marta) is explained once on the Santa Marta year overview and on the Sources, method and limits page.