Longyearbyen weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Poor
Best time to visit: April – June
What is the weather like in Longyearbyen in August?
In August, Longyearbyen is cold: daytime highs average 6 °C, and nights cool down to about 4 °C. The sea averages 4.3 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 48 mm in total. All in all, August is not an ideal month for a holiday in Longyearbyen.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 32 | 24 | 15 |
| Day | 8° | 6° | 2° |
| Night | 5° | 4° | −1° |
| Sea | 4° | 4° | 3° |
| Sun | 7 h | 5 h | 3 h |
| Rain days | 9 | 11 | 11 |
More details for August
- Daylight
- Midnight sun
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 82 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 1 day1 cm or more of fresh snowAll months
- Time zone
- UTC+2Arctic/Longyearbyen
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %40 %
- Few rainy daysweight 30 %54 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Warm jacket
- Rain jacket or umbrella
Longyearbyen in August: quick answers
Is Longyearbyen hot in August?
No. In August, Longyearbyen is cold: daytime highs average 6 °C and nights drop to about 4 °C.
Can you swim in Longyearbyen in August?
Only if you don't mind cold water: in August the sea averages just 4.3 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Longyearbyen in August?
Rain is frequent, with about 11 rainy days and 48 mm in total.
Longyearbyen month by month
The whole year in LongyearbyenAll destinations: SvalbardWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences