Zagreb Weather in September
In September, Zagreb averages a high of 22°C (72°F) and a low of 13°C (56°F), from 53 years of daily records (1971–2025).
22°C
Average high
72°F
13°C
Average low
56°F
34°C
Record high
92°F · September 1, 2024
3°C
Record low
37°F · September 30, 1995
What September Is Like in Zagreb
- Zagreb's hottest September day on record is a recent one: 34°C (92°F) on September 1, 2024.
- September in Zagreb has become 1.8°C (3.2°F) warmer on average: the 2010–2024 average against 1970–1989.
- 5 of the 10 warmest Septembers on record in Zagreb have come since 2010.
- The coldest September reading, 3°C (37°F) on September 30, 1995, has not been matched in 30 years.
At least 1 mm of rain falls on 28% of September days, and the month averages 94 mm in total.
Warmest: 2023 (26.9°C)Latest: 2023 (26.9°C)10-year averageLong-run average (22.0°C)
Look Up a Day in September
See the weather in Zagreb on any September date, year by year.
Source: NOAA GHCN-Daily, Zagreb-Gric (1971–2025). Averages cover 1971–2025. How we compute this