Climate averages 1991–2020
San Luis Río Colorado weather
in May.
A very hot, very dry month: the 5th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a very hot month in San Luis Río Colorado: daytime highs average 34.5°C and nights cool to about 18.9°C. By daytime temperature it is the 5th warmest of the 12 months.
Rain is very rare: less than 1 mm falls in a typical May (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 48 min on an average May day.
The nearest other city in this atlas is Yuma (33 km away). In May its highs average 34.9°C, about as warm as San Luis Río Colorado, with almost no rain (under 1 mm).
Among the 153 cities listed in Mexico, San Luis Río Colorado ranks 13th of 153 for the warmest May highs and joint 9th of 153 for the driest May (rainfall, lowest first). The mean May high of those 153 cities is 29.6°C; San Luis Río Colorado is 4.8°C warmer than that mean.
From May to June, average highs rise by 4.8°C to 39.3°C, and monthly rainfall stays under 1 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Yuma in MayUnited States · 33 kmHigh 34.9°C · Low 19.1°C · 0.7 mm rain
- Mexicali in MayMexico · 67 kmHigh 34.9°C · Low 18.8°C · 0.8 mm rain
- Ensenada in MayMexico · 184 kmHigh 21.9°C · Low 14.2°C · 7.2 mm rain
- Indio in MayUnited States · 195 kmHigh 33.6°C · Low 18.6°C · 2.8 mm rain
- El Cajon in MayUnited States · 209 kmHigh 21.7°C · Low 13.0°C · 10 mm rain
- Tijuana in MayMexico · 210 kmHigh 19.4°C · Low 13.5°C · 11 mm rain
- Rosarito in MayMexico · 214 kmHigh 19.6°C · Low 14.2°C · 7.3 mm rain
- Chula Vista in MayUnited States · 218 kmHigh 19.4°C · Low 13.6°C · 10 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.