Climate averages 1991–2020
San Luis Río Colorado weather
in August.
A very hot, very dry month: the 2nd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a very hot month in San Luis Río Colorado: daytime highs average 40.8°C and nights cool to about 28.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 11 mm of rain on roughly 3 days, which makes August a very dry month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 21 min on an average August day.
The nearest other city in this atlas is Yuma (33 km away). In August its highs average 41.5°C, 0.7°C warmer than San Luis Río Colorado, with 11 mm of rain.
Among the 153 cities listed in Mexico, San Luis Río Colorado ranks 2nd of 153 for the warmest August highs and 5th of 153 for the driest August (rainfall, lowest first). The mean August high of those 153 cities is 27.9°C; San Luis Río Colorado is 12.9°C warmer than that mean.
From August to September, average highs fall by 2.9°C to 37.9°C, and monthly rainfall rises from 11 mm to 13 mm.
The annual picture
August 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
San Luis Río Colorado climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.0°C8.6°C | 8.6°C | 9.2 | 1.5 | 10.310 h |
| February | 22.9°C9.9°C | 9.9°C | 13 | 2.3 | 11.011 h |
| March | 26.7°C12.5°C | 12.5°C | 10 | 1.5 | 12.012 h |
| April | 30.3°C15.3°C | 15.3°C | 3.0 | 0.6 | 13.013 h |
| May | 34.5°C18.9°C | 18.9°C | 0.7 | 0.2 | 13.814 h |
| June | 39.3°C23.1°C | 23.1°C | 0.6 | 0.2 | 14.214 h |
| July | 41.2°C27.4°C | 27.4°C | 4.8 | 1.5 | 14.114 h |
| August, selected | 40.8°C28.0°C | 28.0°C | 11 | 2.9 | 13.313 h |
| September | 37.9°C24.8°C | 24.8°C | 13 | 2.2 | 12.412 h |
| October | 32.0°C18.5°C | 18.5°C | 4.9 | 0.9 | 11.411 h |
| November | 25.2°C12.5°C | 12.5°C | 5.5 | 0.8 | 10.511 h |
| December | 19.9°C8.1°C | 8.1°C | 9.2 | 1.7 | 10.110 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
August in nearby cities
- Yuma in AugustUnited States · 33 kmHigh 41.5°C · Low 28.2°C · 11 mm rain
- Mexicali in AugustMexico · 67 kmHigh 41.6°C · Low 27.9°C · 8.7 mm rain
- Ensenada in AugustMexico · 184 kmHigh 28.4°C · Low 20.8°C · 1.8 mm rain
- Indio in AugustUnited States · 195 kmHigh 41.0°C · Low 27.8°C · 8.6 mm rain
- El Cajon in AugustUnited States · 209 kmHigh 28.3°C · Low 18.7°C · 1.8 mm rain
- Tijuana in AugustMexico · 210 kmHigh 24.8°C · Low 18.6°C · 1.2 mm rain
- Rosarito in AugustMexico · 214 kmHigh 24.9°C · Low 19.3°C · 0.4 mm rain
- Chula Vista in AugustUnited States · 218 kmHigh 24.5°C · Low 18.1°C · 1.8 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 San Luis Río Colorado) is explained once on the San Luis Río Colorado year overview and on the Sources, method and limits page.