Weather in Longyearbyen for September 2025
In general, the average temperature in Longyearbyen at the beginning of September is 5.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of -2.3 °C by the end of September.
Longyearbyen experiences moderate snowfall in September, with an average of 10 snowy days.
Is September a good time to visit Longyearbyen? check out the best time to travel to Longyearbyen page.
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Longyearbyen in September average weather
Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
---|---|---|---|---|---|---|
1 5° | 2 7° | 3 10° | 4 7° | 5 6° | 6 1° | 7 0° |
8 0° | 9 2° | 10 1° | 11 1° | 12 2° | 13 2° | 14 3° |
15 3° | 16 3° | 17 1° | 18 1° | 19 -0° | 20 -1° | 21 -1° |
22 -2° | 23 -3° | 24 -3° | 25 -4° | 26 -3° | 27 -4° | 28 -0° |
29 0° | 30 -2° |
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Temperatures trend during September in Longyearbyen
September weather day by day
Date | Weather | Temperatures | Rain | Snow | More |
---|---|---|---|---|---|
1 Sept. | Overcast | 5° /3° | 0 mm | 0 cm | |
2 Sept. | Patchy rain possible | 7° /4° | 1.1 mm | 0 cm | |
3 Sept. | Sunny | 10° /6° | 0 mm | 0 cm | |
4 Sept. | Patchy rain possible | 7° /5° | 0 mm | 0 cm | |
5 Sept. | Patchy rain possible | 6° /1° | 1 mm | 0 cm | |
6 Sept. | Light rain | 1° /0° | 9.6 mm | 0 cm | |
7 Sept. | Light freezing rain | 0° /-1° | 0.2 mm | 0.1 cm | |
8 Sept. | Moderate or heavy snow showers | 0° /-2° | 1.4 mm | 1.1 cm | |
9 Sept. | Overcast | 2° /0° | 0 mm | 0 cm | |
10 Sept. | Light snow showers | 1° /-1° | 0.4 mm | 0.4 cm | |
11 Sept. | Moderate or heavy snow showers | 1° /-1° | 1.5 mm | 1.2 cm | |
12 Sept. | Cloudy | 2° /0° | 0.2 mm | 0 cm | |
13 Sept. | Overcast | 2° /0° | 1.2 mm | 0 cm | |
14 Sept. | Overcast | 3° /1° | 2.3 mm | 0 cm | |
15 Sept. | Overcast | 3° /1° | 1.5 mm | 0 cm | |
16 Sept. | Moderate or heavy snow showers | 3° /0° | 2.8 mm | 1.1 cm | |
17 Sept. | Light snow showers | 1° /-1° | 0.3 mm | 0.1 cm | |
18 Sept. | Partly cloudy | 1° /-2° | 0.2 mm | 0 cm | |
19 Sept. | Partly cloudy | 0° /-4° | 0.6 mm | 0 cm | |
20 Sept. | Overcast | -1° /-4° | 0 mm | 0 cm | |
21 Sept. | Light freezing rain | -1° /-4° | 0.4 mm | 0.3 cm | |
22 Sept. | Light freezing rain | -2° /-6° | 0 mm | 0 cm | |
23 Sept. | Sunny | -3° /-6° | 0 mm | 0 cm | |
24 Sept. | Moderate snow | -3° /-6° | 0.5 mm | 0.4 cm | |
25 Sept. | Partly cloudy | -4° /-6° | 0 mm | 0 cm | |
26 Sept. | Sunny | -3° /-6° | 0.4 mm | 0.2 cm | |
27 Sept. | Partly cloudy | -4° /-7° | 0 mm | 0 cm | |
28 Sept. | Moderate snow | 0° /-6° | 2.6 mm | 1 cm | |
29 Sept. | Heavy snow | 0° /-1° | 2.4 mm | 2 cm | |
30 Sept. | Partly cloudy | -2° /-4° | 0.7 mm | 0.6 cm | |
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Longyearbyen in September - FAQ
What to pack to Longyearbyen in September?
As you prepare for your trip to Longyearbyen in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Longyearbyen, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Thermal Wear: Base layers for cold destinations
- All-Weather Jacket: Waterproof and breathable
- Footwear
- Insulated Boots: For snowy and extremely cold temperatures
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
September rainfall patterns in Longyearbyen
September snowfall in Longyearbyen
Quick links
Get accurate weather forecasts for Longyearbyen, located at latitude 78.223 and longitude 15.647. Stay updated with localized weather information tailored for Longyearbyen.