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When to go · Sastamala

Sastamala in December

Good month. Outside the best window (Jun–Aug, Sep). Across Finland: Rovaniemi's Christmas peak, polar night in the north; Helsinki Christmas market; closures 24–26 Dec.

Key facts

Verdict
Good
Temperature
0°C (32°F) / −8°C (18°F)
average high / low
Rain days
5
Crowds
High
Finland overall
Prices
High
Finland overall

Verdict

GoodFinland month rating

Outside the best window (Jun–Aug, Sep). Across Finland: Rovaniemi's Christmas peak, polar night in the north; Helsinki Christmas market; closures 24–26 Dec.

Is another month better than December?

December is rated good. These months rate higher:

Weather in December

Long-term averages
  • SastamalaHighs around 0 °C (32 °F), lows around -8 °C (18 °F), rain on about 5 days

Festivals and holidays

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

  • Christmas big impact

    24–26 Dec · Finland

    Christmas Eve is the main day; most things closed; Lapland at peak.

Crowds and prices

Crowds · Finland overall
High
Prices · Finland overall
High

Finland overall: Rovaniemi's Christmas peak, polar night in the north; Helsinki Christmas market; closures 24–26 Dec.

High-price month: see what to book ahead.

Compare two months

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

  • Verdict

    Dec: Good

    Jun: Great (better)

  • Daytime high

    Dec: 0 °C (32 °F)

    Jun: 22 °C (72 °F)

  • Night low

    Dec: -8 °C (18 °F)

    Jun: 12 °C (54 °F)

  • Rain days

    Dec: 5 (better)

    Jun: 9

  • Crowds

    Dec: High

    Jun: Medium

  • Prices

    Dec: High

    Jun: Medium

  • Festivals listed

    Dec: 1

    Jun: 1

December: Outside the best window (Jun–Aug, Sep). Across Finland: Rovaniemi's Christmas peak, polar night in the north; Helsinki Christmas market; closures 24–26 Dec.

June: Inside Sastamala's best window: Jun–Aug, Sep.

Sastamala: 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 December →