Weather in Longyearbyen — today
Now in Longyearbyen
☁️
+3°
Overcast
Feels like +0° · humidity 94%
Today 12.9: +6° / +3°
🕐 07:25
Wind
11 km/h
UV index
0
Air (AQI)
19 · Excellent
Precipitation
61%
Humidity
94%
Pressure
1008 hPa
Sunrise / sunset
05:13 / 20:28
Sea temperature
🌊 +6°
👕 What to wear today
Cold — a warm winter jacket and a hat.
☂️ Take an umbrellaFeels colder by 3°
Weather for an activity:
Detailed weather information for Longyearbyen
Today, 12 September, Saturday, in Longyearbyen (Svalbard and Jan Mayen): cloudy, light rain in places, chilly. During the day the air will warm up to +6°, at night around +3°. Due to the wind it feels like +0°. Wind up to 18 km/h. High chance of rain — be sure to take an umbrella or a raincoat. Cold — put on a warm winter jacket and a hat; non-slip shoes are best. The water is cold, +6° — too chilly for swimming. The sun will rise at 05:13 and set at 20:28 — daylight lasts 15 hours.Hourly weather in Longyearbyen
💧 The bars at the bottom show the hourly precipitation probability. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).
Weather in Longyearbyen for 14 days
Tap a day to expand it by time of day and open the full forecast. The bar shows the range from the night low (left) to the day high (right).
▶
Today 12.9
🌦️
💧 61%
+3° +6°
Morning
☁️
+3°
Day
🌦️
+6°
Evening
🌇
+5°
Night
🌙
+3°
▶
Tomorrow 13.9
🌦️
💧 90%
+5° +9°
Morning
🌦️
+8°
Day
🌦️
+9°
Evening
🌇
+6°
Night
🌙
+5°
▶
Mon 14.9
🌨️
💧 71%
+1° +6°
Morning
🌨️
+3°
Day
🌨️
+6°
Evening
🌇
+5°
Night
🌙
+1°
▶
Tue 15.9
☁️
💧 34%
+0° +2°
Morning
☁️
+1°
Day
☁️
+2°
Evening
🌇
+2°
Night
🌙
+0°
▶
Wed 16.9
🌨️
💧 39%
+1° +3°
Morning
🌨️
+2°
Day
🌨️
+3°
Evening
🌇
+3°
Night
🌙
+1°
▶
Thu 17.9
☁️
💧 23%
+0° +3°
Morning
☁️
+1°
Day
☁️
+3°
Evening
🌇
+2°
Night
🌙
+0°
▶
Fri 18.9
☁️
💧 20%
-1° +1°
Morning
☁️
+0°
Day
☁️
+1°
Evening
🌇
+1°
Night
🌙
-1°
▶
Sat 19.9
☁️
💧 20%
-2° +1°
Morning
☁️
-1°
Day
☁️
+1°
Evening
🌇
+0°
Night
🌙
-2°
▶
Sun 20.9
☁️
💧 15%
-4° -1°
Morning
☁️
-3°
Day
☁️
-1°
Evening
🌇
-2°
Night
🌙
-4°
▶
Mon 21.9
☁️
💧 24%
-4° +0°
Morning
☁️
-3°
Day
☁️
+0°
Evening
🌇
-1°
Night
🌙
-4°
▶
Tue 22.9
☁️
💧 29%
-3° +0°
Morning
☁️
-2°
Day
☁️
+0°
Evening
🌇
-1°
Night
🌙
-3°
▶
Wed 23.9
☁️
💧 26%
-4° -1°
Morning
☁️
-3°
Day
☁️
-1°
Evening
🌇
-2°
Night
🌙
-4°
▶
Thu 24.9
☁️
💧 21%
-3° -1°
Morning
☁️
-2°
Day
☁️
-1°
Evening
🌇
-1°
Night
🌙
-3°
▶
Fri 25.9
☁️
💧 24%
-5° -2°
Morning
☁️
-4°
Day
☁️
-2°
Evening
🌇
-3°
Night
🌙
-5°
🗺️ Precipitation radar
Precipitation radar (RainViewer) over a clean base map — updates every 5–10 minutes. Colours show nearby precipitation; if there is none, the map is simply clear — that is normal. Zoom with + / −.
Rain intensity:lightmoderateheavy
🎯 What to do in this weather — indices of the day
Comfort score from 0 (bad) to 100 (excellent), calculated from the day's weather. For “rain” and “UV” a percentage/risk level is shown.
🏖️ Beach
0 / 100
for sea and sun · Bad
🏊 Swimming
0 / 100
water 6° · Bad
🏃 Running
0 / 100
comfort for running · Bad
🧴 UV
0%
moderate · low
☂️ Rain
61%
likely · high
✨ Stars
45 / 100
evening visibility · Average
🧺 Laundry drying
0 / 100
will dry outside · Bad
🚗 Car wash
22 / 100
better to wait · So-so
🌫️ Air quality
19
Excellent air
European AQI
PM2.5: 1PM10: 2O₃: 57NO₂: 0
The air is clean — you can walk and exercise outside.
🌅 Sun, moon and sea
Sunrise
05:13
Sunset
20:28
Golden hour
18:12
Daylight
15 h (-17 min vs yesterday)
Sea temperature
+6°
🌊 calm, waves 0.2 m.
Longyearbyen climate by month
Long-term averages. Hover over a bar for details. The forecast for a specific month is a combination of the climate normal and the model forecast for the coming weeks.
-11°
-16°
Jan
-11°
-16°
Feb
-12°
-16°
Mar
-8°
-12°
Apr
-2°
-4°
May
+3°
+2°
Jun
+8°
+5°
Jul
+7°
+4°
Aug
+2°
-1°
Sep
-4°
-8°
Oct
-7°
-12°
Nov
-10°
-14°
Dec
swipe sideways →
Bar color shows temperature:frostcoolcomfortablewarmhot— best months to visit
| Month | Day | Night | Sea | Precipitation | What to pack and what makes the month notable (events, nuances) |
|---|---|---|---|---|---|
| January | -11° | -16° | +0° | 43 mm | Proper winter: -11° daytime, frost and short days. 🥶 a down jacket, a hat with ear flaps, warm boots. The water is cold (+0°) — swimming is for the brave. The shortest daylight of the year — it gets dark early. |
| February | -11° | -16° | -1° | 33 mm | The coldest stretch: -11° by day, full winter clothing required. 🥶 a down jacket, a hat with ear flaps, warm boots. Weather-wise, one of the three best months to visit. |
| March | -12° | -16° | -2° | 36 mm | Freezing: -12° by day, -16° at night — full winter gear, ice underfoot is common. 🥶 a down jacket, a hat with ear flaps, warm boots. This is the coldest month of the year. |
| April | -8° | -12° | -1° | 24 mm | Proper winter: -8° daytime, frost and short days. ❄️ a warm jacket, a hat, non-slip shoes. |
| May | -2° | -4° | +2° | 22 mm | The coldest stretch: -2° by day, full winter clothing required. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+2°) — swimming is for the brave. The longest daylight hours of the year — more time for everything. |
| June | +3° | +2° | +5° | 18 mm | Cold: +3° by day, down to +2° at night — dress warmly. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+5°) — swimming is for the brave. |
| July | +8° | +5° | +8° | 32 mm | Winter weather: about +8° daytime, you need a warm coat and hat. 🧥 a warm jacket. The water is cold (+8°) — swimming is for the brave. This is the hottest month of the year in Longyearbyen. |
| August | +7° | +4° | +9° | 40 mm | A cold month: +7° by day, long walks get uncomfortable. 🧣 a warmer jacket. The water is cold (+9°) — swimming is for the brave. |
| September | +2° | -1° | +6° | 46 mm | Cold: +2° by day, down to -1° at night — dress warmly. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+6°) — swimming is for the brave. |
| October | -4° | -8° | +3° | 42 mm | Proper winter: -4° daytime, frost and short days. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+3°) — swimming is for the brave. |
| November | -7° | -12° | +1° | 48 mm | The coldest stretch: -7° by day, full winter clothing required. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+1°) — swimming is for the brave. |
| December | -10° | -14° | +0° | 47 mm | Freezing: -10° by day, -14° at night — full winter gear, ice underfoot is common. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+0°) — swimming is for the brave. |
When to visit Longyearbyen
✅ Recommended time to visit
🌟 Best time: January, February, July
Daytime air-11…+8°
Sea temperature-1…+8°
Precipitationoften
Featurewhite nights
Why: comfortable -11…+8° by day, little rain.
⚠️ Doable, with caveats
🌤️ Shoulder season: March, April, May, June, August, September
Daytime air-12…+7°
Sea temperature-2…+9°
Precipitationoften
Featurewhite nights
Why: already/still hot (-12…+7°) but bearable; fewer crowds, lower prices.
🔴 Not the best time
❄️ Cold season: October, November, December
Daytime air-10…-4°
Sea temperature+0…+3°
Precipitationoften
Why: cold and dark (-10…-4° by day, 0 h of daylight) — only if frost and short days don’t put you off.
Bottom line: the best time to visit Longyearbyen is January, February, July, and the most comfortable months are January, February, July. The toughest months to visit are October, November, December: cold and short days.
🌡️ Today vs the climate normal
Today's high
+6°
Normal for September
+2°
Deviation
4° warmer than normal
A year ago on this day
+8°
Record for this date
+8° (2025)
The normal, “a year ago” and the record come from the weather archive since 1940 (Open-Meteo / ERA5).
Weather archive for Longyearbyen
📅 See what the weather was like on any day since 1940. For example: “what was the weather on March 2, 2021”.
Show the archive for the selected day →
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Weather in cities near Longyearbyen
Frequently asked questions about the weather in Longyearbyen
What is the weather in Longyearbyen right now?＋
Overcast, +3°, feels like +0°.
Will it rain in Longyearbyen today?＋
Yes: 61% chance, 0 mm.
When is the best time to visit Longyearbyen?＋
Best time to visit — January, February, July.
Can you swim in Longyearbyen in summer?＋
In winter the water is around +0° — swimming is for the brave. In summer the sea warms up to +7°.
What time are sunrise and sunset in Longyearbyen?＋
Sunrise 05:13, sunset 20:28.
Does it snow in Longyearbyen in winter?＋
Yes, snow is possible in January, February, March, April, May, September, October, November, December.
What is the climate in Longyearbyen by month?＋
Summers up to +8° in July, winters around -16° in March; the wettest month is November.
Is it cold in Longyearbyen in winter?＋
🥶 Severe frost. You'll need a warm jacket, a hat with ear flaps, gloves and warm boots (felt boots); staying outside for long is dangerous — risk of frostbite.