When to go · Svalbard and Jan Mayen
When to go to Longyearbyen
When to go
What the averages say
No month in Longyearbyen averages a high of 18°C or more; the warmest, July, averages 5°C.
- Cold months (a mean high under 10°C): January to December.
- The warmest month is July (5°C) and the coolest March (-12°C). The wettest is September (73 mm) and the driest June (39 mm); about 684 mm of rain falls in a year.
How these sentences are worded
Each sentence is written from the figures by fixed rules, and says no more than they do. Mild to warm: a mean daily high from 18°C up to 32°C. Hot: 32°C or more. Cool: 10°C up to 18°C. Cold: under 10°C. Dry: under 50 mm of rain in the month; wet: 150 mm or more. Humid: a high of 25°C or more with relative humidity of 70% or more. A month is described as good for going when it is mild to warm and not wet.
The year at a glance
- Mild to warm and dry
- Mild to warm, humid or showery
- Hot
- Cool
- Wet
- Cold
- JanCold
- FebCold
- MarCold
- AprCold
- MayCold
- JunCold
- JulCold
- AugCold
- SeptCold
- OctCold
- NovCold
- DecCold
Month by month
Every month in Longyearbyen
| Month | High | Low | Rain | Humidity | Cloud | Sunlight (kWh/m²/day) | High in Dubai | What it is like |
|---|---|---|---|---|---|---|---|---|
| January | -10°C | -15°C | 61 mm | 97% | 74% | 0 | 23°C | Cold |
| February | -10°C | -15°C | 52 mm | 97% | 72% | 0 | 24°C | Cold |
| March | -12°C | -17°C | 54 mm | 96% | 70% | 0.8 | 27°C | Cold |
| April | -7°C | -13°C | 42 mm | 92% | 67% | 3 | 31°C | Cold |
| May | -2°C | -6°C | 46 mm | 89% | 74% | 5.1 | 35°C | Cold |
| June | 2°C | 0°C | 39 mm | 89% | 81% | 6 | 37°C | Cold |
| July | 5°C | 3°C | 59 mm | 89% | 82% | 5.1 | 39°C | Cold |
| August | 5°C | 2°C | 61 mm | 90% | 82% | 3.2 | 39°C | Cold |
| September | 1°C | -2°C | 73 mm | 93% | 83% | 1.2 | 37°C | Cold |
| October | -4°C | -8°C | 67 mm | 94% | 79% | 0.1 | 34°C | Cold |
| November | -7°C | -11°C | 64 mm | 95% | 76% | 0 | 29°C | Cold |
| December | -8°C | -13°C | 66 mm | 96% | 74% | 0 | 25°C | Cold |
The Dubai column is Dubai's mean daily high, for comparison.
Modelled averages for an area about 50 km across, not a weather station's record: NASA POWER climatology, 2001–2020. These data were obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program.
Plan it
Plan a trip to Longyearbyen
Tell us when and who is travelling, and a person puts the flights, the stays and the rest into one quote.