Climate in San Luis Río Colorado, Mexico

San Luis Río Colorado, Mexico has a semi-arid climate. The annual average temperature is about 21.5°C and the city receives roughly 702 mm of precipitation across 78 rainy days a year, with around 2495 hours of sunshine. The warmest month is Jul (highs near 34.6°C) and the coldest is Jan (lows near 8.3°C). These are deterministic, latitude- and region-based planning estimates — not a forecast or measured station data; check current conditions with an official meteorological service before travel.

Data year 2025; last updated 2026-05-16.

San Luis Río Colorado is classified as Semi-Arid. This reflects its annual temperature range and the seasonal pattern of its rainfall.

San Luis Río Colorado receives about 702 mm of precipitation a year over roughly 78 rainy days. The wettest month is May and the driest is Jan.

San Luis Río Colorado sees an estimated 2495 hours of sunshine a year, concentrated in the warmer months around Jul.

By temperature and rainfall, the most comfortable months in San Luis Río Colorado are Feb, Mar, Nov. Conditions vary year to year — verify with a current forecast before booking.

San Luis Río Colorado has a climate comfort score of 78/100, a very comfortable year-round climate by this measure. The score weights mild temperatures most, then rainfall balance, sunshine, low seasonality, and the absence of extreme winter cold or summer heat.