When to go · Suomu

Suomu in September

Good month. Outside the best window (Dec–Apr (skiing), Jun–Aug (hiking, biking)). Across Finland: Ruska autumn colours in Lapland and the first auroras over lakes that are not yet frozen.

Key facts

Verdict: Good
Temperature: 11°C (52°F)52°F (11°C) / 3°C (37°F)37°F (3°C); average high / low
Rain days: 8
Crowds: Medium; Finland overall
Prices: Medium; Finland overall

Plan around it

Verdict

GoodFinland month rating

Outside the best window (Dec–Apr (skiing), Jun–Aug (hiking, biking)). Across Finland: Ruska autumn colours in Lapland and the first auroras over lakes that are not yet frozen.

Is another month better than September?

September is rated good. These months rate higher:

Weather in September

Long-term averages

SuomuHighs around 11 °C (52 °F), lows around 3 °C (37 °F), rain on about 8 daysHighs around 52 °F (11 °C), lows around 37 °F (3 °C), rain on about 8 days

Crowds and prices

Crowds · Finland overall: Medium
Prices · Finland overall: Medium

Finland overall: Ruska autumn colours in Lapland and the first auroras over lakes that are not yet frozen.

Compare two months

Weather, crowds and prices for any two months in Suomu, side by side.

First month

Second month

Verdict
Sep: Good
Jan: Great (better)
Daytime high
Sep: 11 °C (52 °F)52 °F (11 °C)
Jan: -8 °C (18 °F)18 °F (-8 °C)
Night low
Sep: 3 °C (37 °F)37 °F (3 °C)
Jan: -16 °C (3 °F)3 °F (-16 °C)
Rain days
Sep: 8
Jan: 8
Crowds
Sep: Medium
Jan: Medium
Prices
Sep: Medium
Jan: Medium
Festivals listed
Sep: 0
Jan: 0

September: Outside the best window (Dec–Apr (skiing), Jun–Aug (hiking, biking)). Across Finland: Ruska autumn colours in Lapland and the first auroras over lakes that are not yet frozen.

January: Inside Suomu's best window: Dec–Apr (skiing), Jun–Aug (hiking, biking).

Suomu: figures are long-term averages from this guide, not a forecast.

What to pack

A warm coat, hat and gloves for mornings and evenings

Build the full packing list for your trip →

Across Finland in September →