Warsaw Weather in September
In September, Warsaw averages a high of 18°C (65°F) and a low of 8°C (47°F), based on 55 years of historical weather data from OKECIE.
18°C
Average high
65°F
8°C
Average low
47°F
35°C
Record high
95°F · 2015
-4°C
Record low
25°F · 1986
What to Expect in Warsaw in September
Typical September days in Warsaw reach 18°C (65°F) during the afternoon and cool to around 8°C (47°F) overnight. On average, measurable rain falls on about 38% of days this month. Over the past 55 years, September temperatures in Warsaw have ranged from a record high of 35°C (2015) down to a record low of -4°C (1986).
For a day-by-day look or other months, see the full Warsaw weather history.