Zagreb Weather in September
In September, Zagreb averages a high of 22°C (72°F) and a low of 12°C (53°F), based on 55 years of historical weather data from ZAGREB-GRIC.
22°C
Average high
72°F
12°C
Average low
53°F
33°C
Record high
92°F · 2024
-3°C
Record low
26°F · 1977
What to Expect in Zagreb in September
Typical September days in Zagreb reach 22°C (72°F) during the afternoon and cool to around 12°C (53°F) overnight. On average, measurable rain falls on about 35% of days this month. Over the past 55 years, September temperatures in Zagreb have ranged from a record high of 33°C (2024) down to a record low of -3°C (1977).
For a day-by-day look or other months, see the full Zagreb weather history.