Guanajuato City Temperature by Month

The average annual maximum temperature in Guanajuato City, Guanajuato, Mexico is 27°C (81°F), with daytime highs ranging from 23°C (73°F) in January to 31°C (88°F) in May. This page covers monthly averages, day-night differences, and how Guanajuato City compares to cities worldwide.

The moderate changes in the climate in Guanajuato City ensure gradual weather shifts through each season. At night, temperatures drop to between 15°C (59°F) and 8°C (46°F) depending on the time of year.

The chart below illustrates the average maximum day and minimum night temperatures in Guanajuato City by month:

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. May, the city's warmest month, sees 260 hours of sunshine.

The chart below shows the average temperature throughout the year:

Guanajuato City's average annual maximum temperature is 27°C (81°F). To put that in context, here's how it compares to a few well-known destinations:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

Glasgow, Scotland averages 13°C (55°F) a year, mild but often grey, with cold winters and rarely hot summers.

San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation, summers are often cool and foggy, winters mild.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Guanajuato City's weather, including monthly rainfall, sunshine hours, and humidity, visit our Guanajuato City climate page.