Weather in Longyearbyen in August 2025
Average weather
Average temperature in Longyearbyen in August
The temperature in August is +10°C on average, with a range between a maximum of +14°C during the day and a minimum of +4°C at night.
The average maximum temperature goes down 20% by the end of the month, compared with the beginning of the month, from +10°C to +8°C.
Is Longyearbyen warm or cold in August?
Longyearbyen is typically cool in August.
Maximum temperatures go down compared to the previous month from +9°C to +7°C. The minimum temperature also goes down from +5°C to +4°C.
Pack a sweater and a jacket as there will be cooler temperatures.
August is one of the warmest months in Longyearbyen, here is the comparison with other months:
Climate in Longyearbyen in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +9°C | +7°C | +3°C | ||||
| Min. temperature | ||||||
| 0°C | -5°C | -13°C | ||||
| Max. temperature | ||||||
| +18°C | +15°C | +14°C | ||||
| Rainfall | ||||||
| 30 mm | 38 mm | 33 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 82% | 84% | 87% | ||||
| Air pressure | ||||||
| 1011 HPa | 1011 HPa | 1008 HPa | ||||
| Sunny days | ||||||
| 1 | 1 | 0 | ||||
| Cloudy days | ||||||
| 17 | 17 | 15 | ||||
| Rainy days | ||||||
| 13 | 13 | 8 | ||||
| Snowy days | ||||||
| 0 | 1 | 7 | ||||
August weather is still as ok as in July. It’s getting colder in August. From +9°C in the day, the average maximum temperature lowers to +7°C. Prepare for more rain. Average rainfall goes from 30 mm to 38 mm. Humidity rises from 82% to 84%. The average wind speed doesn’t change much during August, staying around 3 m/s. The amount of sunny days stay about the same, averaging 1 sunny days during the month.
September brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Longyearbyen is gradually increasing during August, going from 3 m/s to 5 m/s over the course of the month.
Rain
How was the weather last August in Longyearbyen?
Climate Change over Years
The climate in Longyearbyen in August has not changed much over the last 43 years.
The average temperature was the lowest in 1988 (-7°C) and the highest in 2016 (+1°C). The driest year was 1998 with only 51 mm of rainfall, and the wettest year was 2016 with 381 mm.
FAQ
Is August a good time to visit Longyearbyen?
Can you sunbathe in Longyearbyen in August?
Is Longyearbyen rainy in August?
Is it sunny in Longyearbyen in August?
Monthly weather in Longyearbyen
Source of the data
For this page, we’ve looked at the typical weather in Longyearbyen, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.