Longyearbyen (Svalbard) weather in August

August in Longyearbyen: cold, a little rain, with clean air — an excellent time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Longyearbyen🇸🇯 Svalbard and Jan Mayen · Lapland & the Arctic · Trekking85
  1. 33Jan
  2. 36Feb
  3. 46Mar
  4. 59Apr
  5. 75May
  6. 87Jun
  7. 91Jul
  8. 85Aug
  9. 73Sep
  10. 54Oct
  11. 44Nov
  12. 38Dec

#3 of 12 months in Longyearbyen · #472 of 1413 destinations to visit in August · comfort 85/100 (tier A)

Days
11°C
Nights
7°C
Wet days
11
Sun
8.3 h
Humidity
85%
Daylight
23 h
Longyearbyen, Svalbard and Jan Mayen
Photo: Francesco Ungaro · Pexels

Traveller notes on Longyearbyen in August

Other months in Longyearbyen

Longyearbyen-forum threads on a May visit describe this as genuinely a sought-after period, posters naming Norwegian visitors especially as the reason fewer than ten hotels and guesthouses book up fast. Regulars call dogsledding genuinely too late by May, several posters naming wheeled-sled trips as the real alternative once snow conditions change. Posters call the midnight sun genuinely still visible at one in the morning, one visitor calling this a wonderful part of a May visit. Regulars call snowmobile trips genuinely still available this time of year, several threads naming this a real way to explore beyond town despite the shift away from dogsledding. Posters recommend booking accommodation well ahead for a May trip, several regulars calling this standard given how quickly the limited lodging fills up. The record: 2.1C days, -1.9C nights, 30.1mm across nearly 9 days and 81 percent humidity.
LongyearbyenMayRegular · May · 1 month ago · Read more on Tripadvisor ↗
Longyearbyen-forum threads on a late September visit describe this as a between-seasons stretch, posters calling it too early for real snow activities while boat trips remain a realistic option depending on conditions. Regulars call the northern lights a real possibility by late September, though one visitor described their own sighting as little more than a flicker above the mountains. Posters recommend planning strictly within the settlement, no roads or infrastructure connecting anywhere beyond town. Regulars call the destination worth the cost despite the quieter calendar, one poster calling it the highlight of their trip regardless of the in-between timing. Posters recommend real cold-weather layers regardless of the mild readings, wind and exposure here making conditions feel considerably harsher than the temperature alone suggests. The record: 6.1C days feeling like 4C, 2.2C nights, an extraordinarily high 60.8mm across nearly 13 days and 76 percent humidity.
LongyearbyenSeptemberRegular · September · 1 month ago · Read more on Tripadvisor ↗
Longyearbyen-forum threads on a February visit describe early in the month as still genuinely dark, posters calling the sun's return above the horizon a real event that doesn't happen until around the fifteenth or sixteenth. Regulars call the darkness a real feature worth planning around rather than avoiding, conditions here still good for aurora viewing precisely because of it. Posters call actually seeing the northern lights largely down to luck, real activity varying night to night. Regulars call the surrounding mountains a genuine complication, terrain capable of blocking a display otherwise visible in the open. Posters recommend real expedition-grade cold-weather gear regardless of activity, conditions demanding serious preparation. Regulars call the polar landscape worth the trip independent of aurora luck, the setting unlike almost anywhere else reachable by flight. The record: -4.5C days feeling like -9C, -10.1C nights, 36.7mm across over 9 days and 82 percent humidity.
LongyearbyenFebruaryRegular · February · 1 month ago · Read more on Tripadvisor ↗
Longyearbyen-forum threads on the best timing for day and night activities confirm April sits right at a turning point, the midnight sun beginning around the nineteenth. Posters call April and May a real peak season, snowmobiling and dog sledding both popular under a sun that barely sets. Regulars describe wind as the bigger factor in comfort than raw temperature, a breezy day making sub-zero readings feel considerably harsher than the number suggests. Posters recommend real expedition-grade layers regardless of how still the morning looks, conditions here capable of shifting fast. Regulars are direct that northern lights viewing is effectively over once continuous daylight sets in, anyone chasing aurora needing to visit before mid-April. Posters call the combination of snow cover and near-endless light a genuine reason to visit this window. The record: -3.8C days feeling like -8C, -9.4C nights, a notably high 36.2cm of fresh accumulation and 81 percent humidity.
LongyearbyenAprilRegular · April · 1 month ago · Read more on Tripadvisor ↗

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Longyearbyen climate normals — August

Daytime high11°C / 51°F🧥 cold
Nighttime low7°C / 44°F
Feels like (high)8°C / 46°F
Sea temperature9°C / 47°F🥶 cold sea
Rainfall55 mm / 2.2 in🌦 some rain
Rainy days11 days
Humidity85%💦 very humid
Dew point4°C / 39°F
Sunshine8.3 h/day
Daylight23.2 h
Wind12 km/h / 8 mph
Snowfall2.9 cm / 1.1 in
Air quality (US AQI)23🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Longyearbyen in August

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Busyschool holidays in 7 of the markets that fill it, one of its best months for weather(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Longyearbyen's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Best weatherLongyearbyen's weather peaks June–August, best around July.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Longyearbyen in August

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Rule

    Polar bear protection rules

    1 Jan – 31 DecRisk

    Outside the settlement you are required to be able to protect yourself against polar bears, which in practice means a rifle and the training to use it, or an approved guide. The Governor sets the rules and enforces them. Source ↗

  • Opening

    Boat season

    17 May – 30 SepSummer season opens

    Once the fjord ice goes the boats start running to Pyramiden, Barentsburg and the bird cliffs, and the tundra turns green and flowers for a few weeks. It is also when the cruise ships arrive. Source ↗

  • Nature

    Midnight sun

    23.2 hours of daylight a day; the sun barely sets.

    from the climate normals

What's on around the world in August →

Where is Longyearbyen?

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Longyearbyen in August — FAQ

Is August a good time to visit Longyearbyen?
August in Longyearbyen: cold, a little rain, with clean air — an excellent time to visit. It ranks #3 of 12 months for Longyearbyen on SeasonMap's comfort score (85/100).
What is the weather like in Longyearbyen in August?
In August, Longyearbyen averages a daily high of 10.5°C and a low of 6.7°C, with about 54.9 mm of rain over roughly 11.4 rainy days.
What is the air quality in Longyearbyen in August?
Longyearbyen has a mean US Air Quality Index of about 23 in August.
Does it snow in Longyearbyen in August?
Longyearbyen sees roughly 2.9 cm of snowfall in August.