Guadalajara Weather in September
In September, Guadalajara averages a high of 27°C (81°F) and a low of 16°C (61°F), from 54 years of daily records (1971–2026).
27°C
Average high
81°F
16°C
Average low
61°F
35°C
Record high
94°F · September 9, 2026
11°C
Record low
51°F · September 26, 1975
What September Is Like in Guadalajara
- Guadalajara's hottest September day on record is a recent one: 35°C (94°F) on September 9, 2026.
- 7 of the 10 warmest Septembers on record in Guadalajara have come since 2011.
- The coldest September reading, 11°C (51°F) on September 26, 1975, has not been matched in 51 years.
- A typical September brings 2 days above 30°C (86°F).
At least 1 mm of rain falls on 40% of September days, and the month averages 171 mm in total.
Warmest: 2023 (30.8°C)Latest: 2025 (26.7°C)10-year averageLong-run average (27.1°C)
Look Up a Day in September
See the weather in Guadalajara on any September date, year by year.
Source: NOAA GHCN-Daily, Guadalajara (Dge) (1971–2012); Guadalajara (1979–2026). Averages cover 1971–2026. How we compute this