Tromso, Troms, Norway Climate Change Severity

48
High
The current climate change severity in Tromso is High, with a 6.6% worsening in the climate score compared to last 15 years. This suggests deteriorating conditions, with increasing negative impacts on weather patterns and environmental conditions.
Data: Jan. to Oct. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Tromso Weather Condition Changes (Historic Vs 2025)

2025
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2025

Over the past 15 year(s), Tromso temperature has changed by around +32.2%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Oct. (Historical Vs 2025)

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
2713
-51.8%
cloudyCloudy
5128
-45.09%
rainyRainy
148107
-27.7%
snowySnowy
3560
71.4%
mistyMisty
00
0%

Disclaimer: Other weather conditions not shown may affect the total day count.

Climate Change Indicators:

Over the past 15 years, Tromso has experienced measurable shifts in key climate parameters, contributing to the current severity score of 48 (within the High severity category). This suggests worsening climate conditions from the previous years. Here’s a breakdown of the specific changes observed:

Severity Score

48/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Tromso experienced significant changes:

Temperature change of

+0.8 °C

Variation in annual rainfall

+27.6 %

Change in average humidity

-2.5 %

PM2.5 levels surged by

-36.7 %

Heatwave changed by

+8.1 day(s)

Coldwave changed by

-6.8 day(s)

Wind speeds changed by

+1.1 km/h

These indicators show that Tromso is experiencing a more volatile and extreme climate, reinforcing the need for urgent intervention to mitigate risks. As the severity score rises, focus must shift to adaptation and emergency preparedness.

Check how we calculate Climate Change Severity
Based on data from Jan. to Oct.

Tromso Weather Forecast 30 Days (November - December 2025)
Tromso, Troms, Norway

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Fri. 28, Nov.
light snowLight snow
Temperature Icon0°/-4°
Humidity Icon91%
Wind Icon34km/h
Sat. 29, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon2°/-4°
Humidity Icon86%
Wind Icon35km/h
Sun. 30, Nov.
blizzardBlizzard
Temperature Icon-1°/-3°
Humidity Icon77%
Wind Icon49km/h
Mon. 1, Dec.
blizzardBlizzard
Temperature Icon0°/-6°
Humidity Icon79%
Wind Icon49km/h
Tue. 2, Dec.
sunnySunny
Temperature Icon-9°/-12°
Humidity Icon79%
Wind Icon14km/h
Wed. 3, Dec.
cloudyCloudy
Temperature Icon-9°/-10°
Humidity Icon70%
Wind Icon15km/h
Thu. 4, Dec.
patchy moderate snowPatchy moderate snow
Temperature Icon-5°/-8°
Humidity Icon86%
Wind Icon19km/h
Fri. 5, Dec.
partly cloudyPartly Cloudy
Temperature Icon-5°/-8°
Humidity Icon84%
Wind Icon21km/h
Sat. 6, Dec.
partly cloudyPartly Cloudy
Temperature Icon-4°/-5°
Humidity Icon83%
Wind Icon21km/h
Sun. 7, Dec.
moderate snowModerate snow
Temperature Icon-2°/-5°
Humidity Icon92%
Wind Icon12km/h
Mon. 8, Dec.
light freezing rainLight freezing rain
Temperature Icon-3°/-5°
Humidity Icon93%
Wind Icon9km/h
Tue. 9, Dec.
moderate snowModerate snow
Temperature Icon-4°/-5°
Humidity Icon92%
Wind Icon21km/h
Wed. 10, Dec.
heavy snowHeavy snow
Temperature Icon-3°/-5°
Humidity Icon94%
Wind Icon20km/h
Thu. 11, Dec.
mistMist
Temperature Icon-7°/-9°
Humidity Icon93%
Wind Icon11km/h
Fri. 12, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-3°/-7°
Humidity Icon83%
Wind Icon19km/h
Sat. 13, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-4°/-9°
Humidity Icon84%
Wind Icon19km/h
Sun. 14, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-3°/-8°
Humidity Icon83%
Wind Icon20km/h
Mon. 15, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-3°/-7°
Humidity Icon82%
Wind Icon21km/h
Tue. 16, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-3°/-7°
Humidity Icon83%
Wind Icon21km/h
Wed. 17, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-3°/-8°
Humidity Icon84%
Wind Icon23km/h
Thu. 18, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-4°/-8°
Humidity Icon85%
Wind Icon21km/h
Fri. 19, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-4°/-9°
Humidity Icon85%
Wind Icon19km/h
Sat. 20, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-5°/-8°
Humidity Icon86%
Wind Icon17km/h
Sun. 21, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-5°/-8°
Humidity Icon82%
Wind Icon16km/h
Mon. 22, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-5°/-9°
Humidity Icon82%
Wind Icon19km/h
Tue. 23, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-4°/-8°
Humidity Icon84%
Wind Icon18km/h
Wed. 24, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-3°/-7°
Humidity Icon84%
Wind Icon20km/h
Thu. 25, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-3°/-7°
Humidity Icon84%
Wind Icon22km/h
Fri. 26, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-4°/-9°
Humidity Icon84%
Wind Icon23km/h
Sat. 27, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-5°/-9°
Humidity Icon84%
Wind Icon24km/h
Sun. 28, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-3°/-9°
Humidity Icon84%
Wind Icon22km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSat. 29, Nov.

1.8°C

Low will be onTue. 2, Dec.

-11.6°C

HumidityHumidity

High will be onWed. 10, Dec.

94%

Low will be onWed. 3, Dec.

70%

Wind SpeedWind Speed

High will be onSun. 30, Nov.

49.3km/h

Low will be onMon. 8, Dec.

8.6km/h

PrecipitationPrecipitation

High will be onSun. 30, Nov.

16.8mm

Low will be onThu. 11, Dec.

0.04mm

Ultraviolet IndexUV

High will be onFri. 5, Dec.

2

Low will be onWed. 3, Dec.

1

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