Guanajuato weather in September [2026]

Month summary

Guanajuato weather in September

✅ Good

🌡️ Temperature min / max

57°F – 75°F

🌧 Rainy days

47% of days

☀️ Sunshine

11.4h per day on average

🌊 🌊 Season

Autumn

⭐ ⭐ Weather score

7.6/10

📅 📅 Best month

March (9.5/10)

Quick decision

Should you visit Guanajuato in September?

✅ Good

✅ Yes if: you want shoulder-season value — fewer crowds, 24°F.

❌ No if: you need maximum sunshine — some overcast days are possible.

🌧 Rain : █████░░░░░ 47%

🌡 Temperature : ██████░░░░ 75°F

☀️ Sunshine : ████████░░ 11.4h/d

Our take: September brings that perfect sweet spot in Guanajuato—mild temps between 14–24°C make exploring the colorful colonial streets and underground tunnels genuinely comfortable. You'll catch 11+ hours of daily sunshine, though rain hits about half the days, so pack layers and a light rain jacket. This is ideal for travelers who don't mind occasional showers and prefer cooler weather over summer heat.

By trip type

Guanajuato in September by trip type

🏙️ 🏙️ City break / culture : ✅ Good
🚶 🚶 Outdoor activities : ✅ Good
🏖️ Beach / swimming : — No sea access
💰 💰 Budget : ✅ Low season

Local context

What to expect in September

Autumn in Guanajuato is often underrated: 24°F, golden light and declining crowds. An interesting window. With 47% of rainy days, always have indoor alternatives planned. A good balance between weather and crowds, even if March (9.5/10) remains theoretically better.

Browse by month

All months for Guanajuato

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Annual table

Month-by-month comparison

Month	Min °F	Max °F	Rain %	Precip in	Sun h/d	Score
🌤️ January	46°F	72°F	5%	0.0in	10.5h	8.3/10
🌤️ February	50°F	75°F	4%	0.0in	11.2h	8.7/10
☀️ March	54°F	82°F	4%	0.0in	11.8h	9.5/10
☀️ April	57°F	84°F	3%	0.0in	12.2h	9.3/10
☀️ May	59°F	86°F	18%	0.0in	12.8h	8.7/10
🌤️ June	59°F	81°F	49%	0.2in	12.4h	7.9/10
🌦️ July	57°F	75°F	58%	0.2in	12.1h	7.4/10
🌤️ August	57°F	77°F	52%	0.2in	12.0h	7.6/10
🌤️ September	57°F	75°F	47%	0.1in	11.4h	7.6/10
🌤️ October	55°F	75°F	22%	0.1in	11.0h	8.2/10
🌤️ November	52°F	75°F	7%	0.0in	11.0h	8.6/10
🌤️ December	48°F	72°F	5%	0.0in	10.6h	8.3/10

Ideal Fair Challenging climate ◀ Current month · Source Open-Meteo · 10 years

📊 Data source Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Guanajuato averages 75°F, 47% rainy days and 11.4h of sunshine per day. Overall weather score: 7.6/10. See methodology →

Comparison