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When to go · Porsgrunn

Porsgrunn in September

Great month. Inside Porsgrunn's best window: Jun–Aug, Sep (mild weather and festival).

Key facts

Verdict
Great
Temperature
18°C (64°F) / 10°C (50°F)
average high / low
Rain days
9
Crowds
Medium
Norway overall
Prices
Medium
Norway overall

Verdict

GreatBest and avoid months for Porsgrunn

Inside Porsgrunn's best window: Jun–Aug, Sep (mild weather and festival).

Is another month better than September?

No other month rates higher than September for Porsgrunn in this guide.

Weather in September

Long-term averages
  • PorsgrunnHighs around 18 °C (64 °F), lows around 10 °C (50 °F), rain on about 9 days

Crowds and prices

Crowds · Norway overall
Medium
Prices · Norway overall
Medium

Norway overall: Autumn colours, fewer crowds, first auroras in the north; fjord boats cut to winter timetables late in the month.

Compare two months

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

  • Verdict

    Sep: Great

    Jun: Great

  • Daytime high

    Sep: 18 °C (64 °F)

    Jun: 20 °C (68 °F)

  • Night low

    Sep: 10 °C (50 °F)

    Jun: 12 °C (54 °F)

  • Rain days

    Sep: 9

    Jun: 8 (better)

  • Crowds

    Sep: Medium

    Jun: High

  • Prices

    Sep: Medium

    Jun: High

  • Festivals listed

    Sep: 0

    Jun: 0

September: Inside Porsgrunn's best window: Jun–Aug, Sep (mild weather and festival).

June: Inside Porsgrunn's best window: Jun–Aug, Sep (mild weather and festival).

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

What to pack

  • A warm layer for the evenings

Build the full packing list for your trip →

Across Norway in September →