- Save on UK travel with KAYAK's deals of the day
- Find deals for destinations around the world
- Filter by travel deal type, budget & month
Longyearbyen weather in September 2025
Expect 1°C daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Longyearbyen in September. Check more long-term weather averages for Longyearbyen in September before you book your next holiday to Svalbard in 2025/2026.
- 11°C max day temperature
- 3 hours of sunshine per day
- 1212 days with some rainfall
- -3-3°C min night temperature
- 1414 hours of daylight per day
- 0No heat & humidity
- 2525 mm of monthly rainfall
- 11 (Low) UV index
- -1-1°C sea temperature
More about Longyearbyen
- Overview
- Best time to visit
- Weather by month
- 5-day weather forecast
- Destinations
- Travel advice
- Deals & discounts
Longyearbyen by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Svalbard
The September weather guide for Svalbard, represented by Longyearbyen, (Longyearbyen) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
How cold is it in Longyearbyen in September?
Daytime temperatures usually reach 1°C in Longyearbyen in September, falling to -3°C at night.
How sunny is it in Longyearbyen in September?
There are normally 3 hours of bright sunshine each day in Longyearbyen in September - that's 19% of daylight hours.
Is the sea cold around Longyearbyen in September?
The average sea temperature around Longyearbyen in September is -1°C.
Does it rain in Longyearbyen in September?
There are usually 12 days with some rain in Longyearbyen in September and the average monthly rainfall is 25mm. Rain may fall as snow in this month.
Longyearbyen September sunrise & sunset times
Browse the sunrise and sunset times for Longyearbyen in September 2025. Select a month to view Longyearbyen sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 02:37 | 21:09 |
Monday, 15th September 2025 | 04:38 | 19:02 |
Tuesday, 30th September 2025 | 06:27 | 17:04 |
Be inspired
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Related posts
Popular travel offers
Explore holidays in the sun for less
- Beach holidays
- Family holidays
- City breaks
- Summer holidays
- Winter sun holidays
- Holiday offers
- Top travel brands
- Airlines & flights
- Discount hotels
- Airport parking deals
- TUI
- Jet2holidays
- easyJet holidays
- Love Holidays
- British Airways
Airport parking
- Manchester Airport
- Stansted Airport
- Bristol Airport
- Luton Airport
- Birmingham Airport
- Edinburgh Airport
- Gatwick Airport
- Glasgow Airport
- Newcastle Airport
Airport lounges
- Manchester Airport
- Birmingham Airport
- Bristol Airport
- Edinburgh Airport
- Glasgow Airport
- Heathrow Airport
- Newcastle Airport
- Stansted Airport
- Gatwick Airport