Climate averages 1991–2020
Longyearbyen weather
in June.
A cold, fairly dry month: the 3rd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a cold month in Longyearbyen: daytime highs average 3.3°C and nights cool to about 1.6°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 17 mm of rain on roughly 5 days, which makes June a fairly dry month (the driest month of the year). In June the sun stays above the horizon all day.
From June to July, average highs rise by 4.8°C to 8.1°C, and monthly rainfall rises from 17 mm to 32 mm.
The annual picture
June in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Longyearbyen climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -11.1°C-15.9°C | -15.9°C | 43 | 8.9 | 0.00 h, polar night: no sunrise |
| February | -11.6°C-16.3°C | -16.3°C | 31 | 7.2 | 2.02 h |
| March | -11.7°C-16.3°C | -16.3°C | 35 | 8.4 | 11.211 h |
| April | -8.1°C-12.3°C | -12.3°C | 23 | 6.8 | 20.520 h |
| May | -1.6°C-4.5°C | -4.5°C | 21 | 6.0 | 24.024 h, midnight sun: no sunset |
| June, selected | 3.3°C1.6°C | 1.6°C | 17 | 5.0 | 24.024 h, midnight sun: no sunset |
| July | 8.1°C5.3°C | 5.3°C | 32 | 8.2 | 24.024 h, midnight sun: no sunset |
| August | 6.8°C3.9°C | 3.9°C | 40 | 9.0 | 23.423 h |
| September | 2.4°C-0.8°C | -0.8°C | 45 | 9.8 | 14.715 h |
| October | -4.0°C-8.0°C | -8.0°C | 41 | 9.1 | 6.06 h |
| November | -6.8°C-11.6°C | -11.6°C | 47 | 10.3 | 0.00 h, polar night: no sunrise |
| December | -9.6°C-14.4°C | -14.4°C | 45 | 9.7 | 0.00 h, polar night: no sunrise |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Longyearbyen) is explained once on the Longyearbyen year overview and on the Sources, method and limits page.