Svalbard and Jan Mayen (Longyearbyen)
September
Weather in Svalbard and Jan Mayen for September 2025
Your guide to Svalbard and Jan Mayen weather in September - trends and predictions
The climate of Svalbard and Jan Mayen in September is quite snowy, averaging 11 snowy days.
According to Svalbard and Jan Mayen snow forecast for September 2025, 5 snowy days are expected until the end of the month. The closest date with snow is Tuesday, 16 September.So far, September 2025 in Svalbard and Jan Mayen is slightly warmer than the historical average by 2 °C.
The forecast for the next days in Svalbard and Jan Mayen predicts a temperature of -0.9 °C, which is cooler than the historical average.
In general, the average temperature in Svalbard and Jan Mayen at the beginning of September is 6.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of -0.9 °C by the end of September.
Snow Forecast ❄️
Temperatures
13
Dry days
6
Rainy days
11
Snow days
1°/-1°
Temperatures
15 km/h
Avg max wind
82 %
Avg humidity
Svalbard and Jan Mayen Weather September
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What’s the Weather Like in Svalbard and Jan Mayen This September?
Discover the average temperatures and weather trends across Svalbard and Jan Mayen’s cities this September.
Temperatures trend during September in Svalbard and Jan Mayen
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September weather in Svalbard and Jan Mayen day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 7° /4° | 0.4 mm | 0 cm | |
| 2 Sept. |  Patchy rain possible | 7° /5° | 1 mm | 0 cm | |
| 3 Sept. |  Sunny | 10° /6° | 0.1 mm | 0 cm | |
| 4 Sept. | Patchy rain possible | 8° /5° | 0.9 mm | 0 cm | |
| 5 Sept. | Patchy rain possible | 8° /3° | 1.9 mm | 0 cm | |
| 6 Sept. |  Light rain | 4° /3° | 7.5 mm | 0 cm | |
| 7 Sept. |  Light freezing rain | 3° /1° | 3.6 mm | 0.1 cm | |
| 8 Sept. |  Moderate or heavy snow showers | 4° /2° | 2.9 mm | 0.6 cm | |
| 9 Sept. | Overcast | 6° /3° | 0.1 mm | 0 cm | |
| 10 Sept. |  Light snow showers | 4° /2° | 1.8 mm | 0.3 cm | |
| 11 Sept. | Moderate or heavy snow showers | 3° /1° | 1 mm | 0.8 cm | |
| 12 Sept. |  Partly cloudy | 4° /1° | 0.2 mm | 0 cm | |
| 13 Sept. | Patchy rain possible | 3° /1° | 1.1 mm | 0 cm | |
| 14 Sept. | Overcast | 3° /1° | 1.6 mm | 0 cm | |
| 15 Sept. | Overcast | 3° /1° | 1.9 mm | 0 cm | |
| 16 Sept. | Light freezing rain | 1° /-2° | 0.2 mm | 0.1 cm | |
| 17 Sept. | Sunny | -1° /-3° | 0 mm | 0 cm | |
| 18 Sept. | Sunny | -1° /-3° | 0 mm | 0 cm | |
| 19 Sept. | Sunny | -1° /-4° | 0 mm | 0 cm | |
| 20 Sept. |  Moderate snow | -1° /-4° | 0.7 mm | 0.5 cm | |
| 21 Sept. | Partly cloudy | -1° /-4° | 0 mm | 0 cm | |
| 22 Sept. | Sunny | -2° /-4° | 0 mm | 0 cm | |
| 23 Sept. | Overcast | -3° /-5° | 0 mm | 0 cm | |
| 24 Sept. | Partly cloudy | -4° /-6° | 0 mm | 0 cm | |
| 25 Sept. | Partly cloudy | -4° /-6° | 0 mm | 0 cm | |
| 26 Sept. | Partly cloudy | -2° /-5° | 0.1 mm | 0.1 cm | |
| 27 Sept. | Patchy rain possible | 2° /-1° | 4.4 mm | 0.9 cm | |
| 28 Sept. | Overcast | 1° /-1° | 0 mm | 0 cm | |
| 29 Sept. | Patchy rain possible | 3° /-1° | 0.2 mm | 0 cm | |
| 30 Sept. | Partly cloudy | -2° /-4° | 0.7 mm | 0.6 cm | |
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Important Notice
Our weather forecast for Svalbard and Jan Mayen in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Svalbard and Jan Mayen forecast closer to your planned date for the most up-to-date weather information.
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Svalbard and Jan Mayen in September - FAQ
What are the expected maximum and minimum temperatures in Svalbard and Jan Mayen during September?
Brace for cold days with temperatures not exceeding 1° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Svalbard and Jan Mayen during September?
In September, Svalbard and Jan Mayen can expect light to moderate rainfall, totaling 31.1 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Svalbard and Jan Mayen in September 2025?
Svalbard and Jan Mayen experiences an average snowfall of 8.5 cm during September, occurring over 11 days.
What are the typical wind conditions in Svalbard and Jan Mayen during September?
The average wind speed in Svalbard and Jan Mayen during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
Svalbard and Jan Mayen snow forecast September 2025
Track daily snowfall levels and discover Svalbard and Jan Mayen’s snowy potential this September ❄️
September rainfall patterns in Svalbard and Jan Mayen
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