Climate averages 1991–2020
Ciudad Obregón weather
in September.
A very hot, moderately wet month: the 5th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a very hot month in Ciudad Obregón: daytime highs average 35.5°C and nights cool to about 25.1°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 82 mm of rain on roughly 10 days, which makes September a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 21 min on an average September day.
The nearest other city in this atlas is Navojoa (67 km away). In September its highs average 35.0°C, about as warm as Ciudad Obregón, with 90 mm of rain.
Among the 153 cities listed in Mexico, Ciudad Obregón ranks 4th of 153 for the warmest September highs and joint 22nd of 153 for the driest September (rainfall, lowest first). The mean September high of those 153 cities is 26.5°C; Ciudad Obregón is 9.0°C warmer than that mean.
From September to October, average highs fall by 0.9°C to 34.6°C, and monthly rainfall falls from 82 mm to 26 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
Ciudad Obregón climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.8°C10.6°C | 10.6°C | 11 | 1.8 | 10.611 h |
| February | 26.9°C11.5°C | 11.5°C | 16 | 1.7 | 11.211 h |
| March | 29.8°C13.2°C | 13.2°C | 6.9 | 0.7 | 12.012 h |
| April | 32.9°C15.5°C | 15.5°C | 1.3 | 0.2 | 12.813 h |
| May | 36.0°C18.7°C | 18.7°C | 0.8 | 0.2 | 13.513 h |
| June | 38.5°C24.0°C | 24.0°C | 9.0 | 1.0 | 13.814 h |
| July | 37.3°C26.6°C | 26.6°C | 57 | 9.7 | 13.714 h |
| August | 36.4°C26.5°C | 26.5°C | 84 | 13.2 | 13.113 h |
| September, selected | 35.5°C25.1°C | 25.1°C | 82 | 9.9 | 12.312 h |
| October | 34.6°C20.7°C | 20.7°C | 26 | 2.7 | 11.512 h |
| November | 30.0°C15.0°C | 15.0°C | 18 | 1.9 | 10.811 h |
| December | 25.5°C11.0°C | 11.0°C | 17 | 2.1 | 10.410 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
- Navojoa in SeptemberMexico · 67 kmHigh 35.0°C · Low 25.0°C · 90 mm rain
- Heroica Guaymas in SeptemberMexico · 106 kmHigh 32.7°C · Low 27.0°C · 59 mm rain
- Hermosillo in SeptemberMexico · 205 kmHigh 36.0°C · Low 24.5°C · 52 mm rain
- Los Mochis in SeptemberMexico · 211 kmHigh 33.3°C · Low 25.6°C · 102 mm rain
- Guasave in SeptemberMexico · 259 kmHigh 33.1°C · Low 25.0°C · 113 mm rain
- Guamúchil in SeptemberMexico · 292 kmHigh 32.6°C · Low 24.5°C · 131 mm rain
- Cuauhtémoc in SeptemberMexico · 319 kmHigh 22.9°C · Low 12.9°C · 71 mm rain
- La Paz, Mexico in SeptemberMexico · 374 kmHigh 32.9°C · Low 25.3°C · 61 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 Ciudad Obregón) is explained once on the Ciudad Obregón year overview and on the Sources, method and limits page.