Climate in Monterrey

Monterrey, Mexico has a semi-arid climate. The annual average temperature is about 24.1°C and the city receives roughly 702 mm of precipitation across 78 rainy days a year, with around 2497 hours of sunshine. The warmest month is Jul (highs near 36.2°C) and the coldest is Jan (lows near 12°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.

Monterrey is classified as Semi-Arid. This reflects its annual temperature range and the seasonal pattern of its rainfall.

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

Monterrey sees an estimated 2497 hours of sunshine a year, concentrated in the warmer months around Jul.

By temperature and rainfall, the most comfortable months in Monterrey are Jan, Feb, Dec. Conditions vary year to year — verify with a current forecast before booking.

Monterrey has a climate comfort score of 72/100, a 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.

• Climate in Mexico City — Semi-Arid, comfort 72/100
• Climate in Guadalajara — Semi-Arid, comfort 72/100
• Climate in Dallas — Humid Subtropical, comfort 75/100