Guanajuato City Weather in September
September in Guanajuato City brings high temperatures, with highs of 26°C (79°F) and nights dropping to 14°C (57°F). Rainfall is on the higher side this month, averaging around 144 mm (5.7 in), so keep a rain jacket handy.
Rainfall in Guanajuato City in September
You can typically expect 10 days of rain this month, averaging around 144 mm (5.7 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Guanajuato City in September
Daytime temperatures in Guanajuato City reach 26°C (79°F) in September, dropping to 14°C (57°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 14°C (57°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Guanajuato City in September
The city usually sees around 199 hours of sunlight, indicating many sunny days — a great month for sightseeing.
Wind Speed in Guanajuato City in September
September sees wind speeds averaging 2 m/s (4 knots). You'll typically experience pleasant light breezes that move leaves slightly and feel refreshing. As an average, expect variation from very calm days to periods with more apparent air movement.For Guanajuato City itself, January, February, March, October, November and December generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mexico, check out our Guanajuato City's climate page.
Guanajuato City Temperature in September
Min Temperature
14°C (57°F)
Max Temperature
26°C (79°F)
Chance of Rain
34%
Precipitation
144 mm (5.7 in)
Rainy days
10 days
Windspeed
2 m/s (4 knots)
Sunshine
199 hours
Percentage Sunshine
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Guanajuato City typically stay consistent throughout September, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows typically ranging from 13°C (55°F) to 15°C (59°F).
Average temperatures in September
Historical weather for Guanajuato City in September
Browse day-by-day weather records for Guanajuato City spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Guanajuato City historical weather extremes in September
Based on 39 years of weather observations in Guanajuato City between 1986 and 2025, these are the recorded extremes.
- On September 21, 2023, temperatures climbed to 33°C (91°F), marking the warmest September day on record.
- Guanajuato City experienced its chilliest September day on September 29, 2003, reaching only 18°C (64°F).
- The lowest overnight temperature recorded in September was 6°C (43°F) (September 11, 1988).
Best Places in Mexico in September
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in September →
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What to Wear in Guanajuato City in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Guanajuato City in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mexico, check out our Guanajuato City's climate page.
Temperature Rainfall Sunshine Wind Speed
See the full Guanajuato City climate overview or explore weather in Mexico.
