Climate averages 1991–2020
Cabo San Lucas weather
in September.
A hot, wet month: the 2nd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Cabo San Lucas: daytime highs average 30.5°C and nights cool to about 26.4°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 124 mm of rain on roughly 10 days, which makes September a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 18 min on an average September day.
The nearest other city in this atlas is San José del Cabo (28 km away). In September its highs average 31.4°C, 1.0°C warmer than Cabo San Lucas, with 140 mm of rain.
Among the 153 cities listed in Mexico, Cabo San Lucas ranks joint 28th of 153 for the warmest September highs and 64th of 153 for the driest September (rainfall, lowest first). The mean September high of those 153 cities is 26.5°C; Cabo San Lucas is 3.9°C warmer than that mean.
From September to October, average highs fall by 0.1°C to 30.4°C, and monthly rainfall falls from 124 mm to 24 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
Cabo San Lucas climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.8°C18.1°C | 18.1°C | 7.7 | 1.3 | 10.911 h |
| February | 24.9°C17.9°C | 17.9°C | 8.5 | 0.9 | 11.411 h |
| March | 25.5°C18.5°C | 18.5°C | 1.1 | 0.3 | 12.012 h |
| April | 26.4°C19.7°C | 19.7°C | 0.4 | 0.1 | 12.713 h |
| May | 27.7°C21.2°C | 21.2°C | 0.4 | 0.2 | 13.213 h |
| June | 28.6°C23.1°C | 23.1°C | 5.3 | 0.6 | 13.514 h |
| July | 30.4°C25.6°C | 25.6°C | 19 | 3.6 | 13.413 h |
| August | 31.1°C26.6°C | 26.6°C | 65 | 8.9 | 12.913 h |
| September, selected | 30.5°C26.4°C | 26.4°C | 124 | 10.4 | 12.312 h |
| October | 30.4°C25.2°C | 25.2°C | 24 | 3.0 | 11.612 h |
| November | 28.3°C22.3°C | 22.3°C | 16 | 1.8 | 11.111 h |
| December | 25.7°C19.3°C | 19.3°C | 9.8 | 0.9 | 10.811 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
- San José del Cabo in SeptemberMexico · 28 kmHigh 31.4°C · Low 25.4°C · 140 mm rain
- La Paz, Mexico in SeptemberMexico · 145 kmHigh 32.9°C · Low 25.3°C · 61 mm rain
- Guasave in SeptemberMexico · 332 kmHigh 33.1°C · Low 25.0°C · 113 mm rain
- Culiacán in SeptemberMexico · 333 kmHigh 31.8°C · Low 24.5°C · 174 mm rain
- Los Mochis in SeptemberMexico · 336 kmHigh 33.3°C · Low 25.6°C · 102 mm rain
- Guamúchil in SeptemberMexico · 341 kmHigh 32.6°C · Low 24.5°C · 131 mm rain
- Mazatlán in SeptemberMexico · 359 kmHigh 29.7°C · Low 25.1°C · 205 mm rain
- Navojoa in SeptemberMexico · 467 kmHigh 35.0°C · Low 25.0°C · 90 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 Cabo San Lucas) is explained once on the Cabo San Lucas year overview and on the Sources, method and limits page.