Tallinn Weather in September
In September, Tallinn averages a high of 15°C (59°F) and a low of 8°C (46°F), based on 55 years of historical weather data from TALLINN.
15°C
Average high
59°F
8°C
Average low
46°F
28°C
Record high
83°F · 2024
-4°C
Record low
24°F · 1973
What to Expect in Tallinn in September
Typical September days in Tallinn reach 15°C (59°F) during the afternoon and cool to around 8°C (46°F) overnight. On average, measurable rain falls on about 50% of days this month. Over the past 55 years, September temperatures in Tallinn have ranged from a record high of 28°C (2024) down to a record low of -4°C (1973).
For a day-by-day look or other months, see the full Tallinn weather history.