Longyearbyen Weather in September

September in Longyearbyen averages 3°C (37°F) during the day and -1°C (30°F) at night. Around 58 mm (2.3 in) of snow/rainfall is typical for this time of year.

Rainfall in Longyearbyen in September

This month experiences about 8 days of snow/rain according to historical data, averaging 58 mm (2.3 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Longyearbyen in September

Daytime temperatures in Longyearbyen reach 3°C (37°F) in September, dropping to -1°C (30°F) at night. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. Nights are well below freezing at -1°C (30°F). An extra blanket is a good idea if you feel the cold, especially in older or less well-heated accommodation. The month brings very cold weather, so dressing warmly is essential. Prepare with multiple layers for added warmth.

Sunshine in Longyearbyen in September

The month is characterized by fewer sunny days, with roughly 77 hours hours of sunshine. Ideal for those who prefer a cooler, cloudier climate.

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For a detailed overview over the year and the best time to visit Norway, check out our Longyearbyen's climate page.

Longyearbyen Temperature in September

Min Temperature -1°C (30°F)  

Max Temperature 3°C (37°F)  

Chance of Rain 27%  

Precipitation 58 mm (2.3 in)  

Rainy days 8 days  

Sunshine 77 hours  

Percentage Sunshine  

What to Wear in Longyearbyen in September

Cold weather calls for smart layering in September. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Rain gear is recommended, you can expect wet weather on multiple days. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.

What To Do in Longyearbyen in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

4/10

Cycling

3/10

Walking

3/10

Camping

1/10

Outdoor sports

3/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Norway, check out our Longyearbyen's climate page.

More climate data for Longyearbyen

Temperature Rainfall Sunshine

See the full Longyearbyen climate overview or explore weather in Norway.