Climate averages 1991–2020
Guamúchil 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 Guamúchil: daytime highs average 32.6°C and nights cool to about 24.5°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 131 mm of rain on roughly 14 days, which makes September a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 19 min on an average September day.
The nearest other city in this atlas is Guasave (41 km away). In September its highs average 33.1°C, about as warm as Guamúchil, with 113 mm of rain.
Among the 153 cities listed in Mexico, Guamúchil ranks 15th of 153 for the warmest September highs and joint 69th of 153 for the driest September (rainfall, lowest first). The mean September high of those 153 cities is 26.5°C; Guamúchil is 6.1°C warmer than that mean.
From September to October, average highs rise by 1.2°C to 33.8°C, and monthly rainfall falls from 131 mm to 35 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
Guamúchil climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.4°C12.0°C | 12.0°C | 19 | 1.9 | 10.711 h |
| February | 28.5°C12.7°C | 12.7°C | 16 | 1.8 | 11.311 h |
| March | 30.7°C14.2°C | 14.2°C | 4.0 | 0.6 | 12.012 h |
| April | 33.1°C16.3°C | 16.3°C | 1.3 | 0.3 | 12.713 h |
| May | 35.4°C19.3°C | 19.3°C | 0.7 | 0.3 | 13.413 h |
| June | 36.2°C24.2°C | 24.2°C | 15 | 2.8 | 13.714 h |
| July | 34.5°C25.4°C | 25.4°C | 130 | 15.1 | 13.614 h |
| August | 33.4°C25.3°C | 25.3°C | 166 | 17.5 | 13.013 h |
| September, selected | 32.6°C24.5°C | 24.5°C | 131 | 14.0 | 12.312 h |
| October | 33.8°C21.7°C | 21.7°C | 35 | 4.0 | 11.612 h |
| November | 31.1°C16.7°C | 16.7°C | 44 | 2.2 | 10.911 h |
| December | 27.3°C12.8°C | 12.8°C | 22 | 2.1 | 10.611 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
- Guasave in SeptemberMexico · 41 kmHigh 33.1°C · Low 25.0°C · 113 mm rain
- Los Mochis in SeptemberMexico · 99 kmHigh 33.3°C · Low 25.6°C · 102 mm rain
- Culiacán in SeptemberMexico · 100 kmHigh 31.8°C · Low 24.5°C · 174 mm rain
- Navojoa in SeptemberMexico · 225 kmHigh 35.0°C · Low 25.0°C · 90 mm rain
- La Paz, Mexico in SeptemberMexico · 269 kmHigh 32.9°C · Low 25.3°C · 61 mm rain
- Hidalgo del Parral in SeptemberMexico · 291 kmHigh 26.0°C · Low 15.2°C · 101 mm rain
- Ciudad Obregón in SeptemberMexico · 292 kmHigh 35.5°C · Low 25.1°C · 82 mm rain
- Mazatlán in SeptemberMexico · 300 kmHigh 29.7°C · Low 25.1°C · 205 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 Guamúchil) is explained once on the Guamúchil year overview and on the Sources, method and limits page.