Climate averages 1991–2020
Los Mochis weather
in September.
A hot, wet month: the 6th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Los Mochis: daytime highs average 33.3°C and nights cool to about 25.6°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 102 mm of rain on roughly 11 days, which makes September a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 20 min on an average September day.
The nearest other city in this atlas is Guasave (59 km away). In September its highs average 33.1°C, about as warm as Los Mochis, with 113 mm of rain.
Among the 153 cities listed in Mexico, Los Mochis ranks 6th of 153 for the warmest September highs and 40th of 153 for the driest September (rainfall, lowest first). The mean September high of those 153 cities is 26.5°C; Los Mochis is 6.8°C warmer than that mean.
From September to October, average highs rise by 0.3°C to 33.6°C, and monthly rainfall falls from 102 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
Los Mochis climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.6°C13.4°C | 13.4°C | 13 | 1.5 | 10.711 h |
| February | 26.5°C13.7°C | 13.7°C | 12 | 1.7 | 11.311 h |
| March | 28.7°C14.8°C | 14.8°C | 1.7 | 0.4 | 12.012 h |
| April | 31.1°C16.7°C | 16.7°C | 0.9 | 0.3 | 12.813 h |
| May | 33.6°C19.5°C | 19.5°C | 0.3 | 0.1 | 13.413 h |
| June | 35.0°C24.3°C | 24.3°C | 4.0 | 0.7 | 13.714 h |
| July | 35.1°C26.6°C | 26.6°C | 52 | 7.4 | 13.614 h |
| August | 34.4°C26.5°C | 26.5°C | 92 | 12.5 | 13.013 h |
| September, selected | 33.3°C25.6°C | 25.6°C | 102 | 10.8 | 12.312 h |
| October | 33.6°C22.7°C | 22.7°C | 26 | 2.9 | 11.612 h |
| November | 29.9°C17.9°C | 17.9°C | 17 | 1.8 | 10.911 h |
| December | 25.8°C14.2°C | 14.2°C | 12 | 1.5 | 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 · 59 kmHigh 33.1°C · Low 25.0°C · 113 mm rain
- Guamúchil in SeptemberMexico · 99 kmHigh 32.6°C · Low 24.5°C · 131 mm rain
- Navojoa in SeptemberMexico · 149 kmHigh 35.0°C · Low 25.0°C · 90 mm rain
- Culiacán in SeptemberMexico · 195 kmHigh 31.8°C · Low 24.5°C · 174 mm rain
- Ciudad Obregón in SeptemberMexico · 211 kmHigh 35.5°C · Low 25.1°C · 82 mm rain
- La Paz, Mexico in SeptemberMexico · 226 kmHigh 32.9°C · Low 25.3°C · 61 mm rain
- Heroica Guaymas in SeptemberMexico · 303 kmHigh 32.7°C · Low 27.0°C · 59 mm rain
- San José del Cabo in SeptemberMexico · 313 kmHigh 31.4°C · Low 25.4°C · 140 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 Los Mochis) is explained once on the Los Mochis year overview and on the Sources, method and limits page.