Is Espoo hot in September?
Days are typically cool at 15.4°C, while nights average 9.3°C.
Finland · 1991–2020 normal
Espoo in
September.
Typical September weather in Espoo: 15.4°C by day, 9.3°C at night, 56 mm of rain over 8.6 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high15.4°C
Typical low9.3°C
Rain56 mm
Wet days8.6
In the year-round weather comparison, September scores 53 out of 100 (July leads the year at 85). Daylight is calculated as 12 h 46 from latitude 60.21°. Open-water sea temperature is 14.4°C (9 km from the place centre).
September at a glance
What is Espoo like in September?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 56 mm across about 9 wet days.
How much daylight is there?
There are about 12 h 46 between sunrise and sunset at mid-month, calculated from the place latitude.
Is September a good time to visit?
September ranks 4 of 12 in our weather comparison; July ranks first.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 660158
- NOAA station
- FI000000304 · HELSINKI KAISANIEMI AWS
- Station distance
- 17 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Espoo is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
How travel partnerships will work