July
Other strong months: August and June
32/100 weather score
Svalbard and Jan Mayen · 1991–2020
Best time to visit
Longyearbyen
For Longyearbyen, July has the most comfortable weather in our climate comparison. Typical daytime highs are 9.4°C, nights average 5.4°C, and rainfall totals about 19 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthJuly
Typical daytime high9.4°C
Typical night-time low5.4°C
July rainfall19 mm
July
Other strong months: August and June
55/100 weather score
Make the answer personal
Choose the weather
that suits you.
Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.
2 months fit your choices for Longyearbyen
The lowest comfort score is 5 out of 100. January, February, March, April, May, September, October, November and December share that score. In January, that is mainly because days reach only -7.7°C, 32° below the 24°C the score treats as ideal.
Quick answers
Planning a trip to Longyearbyen?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Longyearbyen?
July is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 9.4°C and 19 mm of rain.
What is the hottest month in Longyearbyen?
July is hottest in this record, with a typical daytime high of 9.4°C and a night-time low of 5.4°C.
Which month has the least rain?
May and June have the lowest monthly rainfall total at 8 mm.
Is this a weather forecast?
No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.
Month by month
See how the weather
changes through the year.
The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -7.7°C | -14.2°C | 21 mm | 6.7 | none | 5 | Strong coverage |
| February | -8.3°C | -15°C | 15 mm | 5 | none | 5 | Strong coverage |
| March | -8.8°C | -15.5°C | 16 mm | 5.9 | 10 h 40 | 5 | Strong coverage |
| April | -5.7°C | -12.1°C | 9 mm | 3.8 | 19 h 54 | 5 | Strong coverage |
| May | -0.1°C | -3.9°C | 8 mm | 3.2 | 24 h | 5 | Strong coverage |
| June | 5.6°C | 2.2°C | 8 mm | 3.5 | 24 h | 16 | Strong coverage |
| July | 9.4°C | 5.4°C | 19 mm | 6.3 | 24 h | 32 | Strong coverage |
| August | 8.2°C | 4.4°C | 21 mm | 6.7 | 24 h | 25 | Strong coverage |
| September | 4°C | 0.3°C | 24 mm | 7.5 | 14 h 03 | 5 | Strong coverage |
| October | -1.5°C | -6.1°C | 16 mm | 5.7 | 5 h 44 | 5 | Strong coverage |
| November | -3.8°C | -9.3°C | 23 mm | 7.3 | none | 5 | Strong coverage |
| December | -6.1°C | -12.2°C | 25 mm | 7.5 | none | 5 | Strong coverage |
What has changed
Recent daytime highs are
3.3°C warmer in Longyearbyen.
Each bar shows the difference between the 2011–2025 average daytime high and the 1961–1990 average for the same month at the same station. A blank month does not have enough older observations for a reliable comparison.
Jan
+5.5
Feb
+5.5
Mar
+2.7
Apr
+3.0
May
+1.9
Jun
+2.2
Jul
+1.4
Aug
+2.2
Sep
+2.7
Oct
+3.0
Nov
+4.2
Dec
+5.7
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 7.7°C16 Jan 2006 | -38.8°C16 Jan 1981 | 26 mm30 Jan 2012 | 70 mm2016 · driest 2 mm in 2009 | 51 |
| February | 7.0°C8 Feb 2012 | -43.7°C25 Feb 1979 | 16 mm18 Feb 1981 | 56 mm1991 · driest 0 mm in 2010 | 51 |
| March | 6.3°C2 Mar 1983 | -46.3°C4 Mar 1986 | 18 mm18 Mar 2011 | 75 mm2015 · driest 0 mm in 2018 | 51 |
| April | 7.5°C25 Apr 2006 | -39.1°C8 Apr 1988 | 9 mm25 Apr 1980 | 37 mm2015 · driest 1 mm in 1992 | 51 |
| May | 12.9°C28 May 2022 | -21.7°C4 May 1978 | 9 mm22 May 1992 | 34 mm2016 · driest 0 mm in 2004 | 51 |
| June | 15.7°C21 Jun 2001 | -8.4°C3 Jun 1979 | 12 mm3 Jun 1992 | 34 mm1992 · driest 0 mm in 1978 | 51 |
| July | 21.7°C25 Jul 2020 | -0.7°C28 Jul 2000 | 39 mm19 Jul 2016 | 62 mm2016 · driest 0 mm in 1998 | 50 |
| August | 20.3°C11 Aug 2024 | -3.9°C30 Aug 1994 | 43 mm5 Aug 1981 | 69 mm1981 · driest 1 mm in 2020 | 51 |
| September | 15.2°C2 Sep 1990 | -12.6°C22 Sep 1988 | 21 mm1 Sep 1997 | 51 mm1999 · driest 0 mm in 2020 | 51 |
| October | 10.2°C7 Oct 2025 | -20.8°C26 Oct 1994 | 19 mm20 Oct 2023 | 57 mm2016 · driest 2 mm in 1996 | 51 |
| November | 9.2°C12 Nov 2020 | -33.2°C19 Nov 1994 | 48 mm16 Nov 2016 | 111 mm2016 · driest 1 mm in 2017 | 51 |
| December | 8.7°C30 Dec 2015 | -35.6°C24 Dec 1988 | 27 mm29 Dec 2016 | 75 mm2016 · driest 0 mm in 1975 | 51 |
| Month | Days 25°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|
| January | 0 | 31 | <1 |
| February | 0 | 28 | <1 |
| March | 0 | 31 | <1 |
| April | 0 | 29 | 0 |
| May | 0 | 26 | 0 |
| June | 0 | 5 | 0 |
| July | 0 | 0 | <1 |
| August | 0 | <1 | <1 |
| September | 0 | 13 | <1 |
| October | 0 | 27 | <1 |
| November | 0 | 29 | <1 |
| December | 0 | 30 | <1 |
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | 0% | 21% | <1% | 21% | -15.0–-3.2°C |
| February | 0% | 20% | <1% | 26% | -14.3–-3.5°C |
| March | 0% | 21% | <1% | 24% | -12.9–-4.2°C |
| April | 0% | 16% | 0% | 16% | -10.0–-2.7°C |
| May | 0% | 11% | 0% | 6% | -1.8–2.0°C |
| June | 0% | 13% | <1% | 13% | 4.0–6.8°C |
| July | <1% | 21% | <1% | 21% | 7.8–11.2°C |
| August | <1% | 25% | 1% | 32% | 6.8–9.5°C |
| September | 0% | 26% | 1% | 34% | 1.5–5.8°C |
| October | 0% | 21% | <1% | 21% | -4.4–0.6°C |
| November | 0% | 24% | <1% | 31% | -9.2–-1.0°C |
| December | 0% | 22% | <1% | 26% | -13.2–-3.1°C |
A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.
The evidence behind this page
Where these figures
come from.
- Place identity
- GeoNames 2729907
- NOAA station
- SV000001008 · SVALBARD AIRPORT
- Station distance
- 5 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 26 usable years
- Daylight
- Calculated from latitude 78.22°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Longyearbyen is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
How travel partnerships will work