Trondheim, Trondelag, Norway Climate Change Severity

57
High
The current climate change severity in Trondheim is High, with a 3.8% 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 May (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Trondheim 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), Trondheim temperature has changed by around +189.5%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
246
-75%
cloudyCloudy
4711
-76.5%
rainyRainy
12676
-39.6%
snowySnowy
1813
-27.7%
mistyMisty
00
0%

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

Climate Change Indicators:

Over the past 15 years, Trondheim has experienced measurable shifts in key climate parameters, contributing to the current severity score of 57 (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

57/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Trondheim experienced significant changes:

Temperature change of

+1.8 °C

Variation in annual rainfall

+52.4 %

Change in average humidity

+0.8 %

PM2.5 levels surged by

-13.1 %

Heatwave changed by

+4.2 day(s)

Coldwave changed by

-3.5 day(s)

Wind speeds changed by

+2.1 km/h

These indicators show that Trondheim 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 May

Trondheim Weather Forecast 30 Days (September - October 2025)
Trondheim, Trondelag, Norway

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Sat. 20, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon13°/10°
Humidity Icon76%
Wind Icon29km/h
Sun. 21, Sep.
moderate rainModerate rain
Temperature Icon10°/8°
Humidity Icon82%
Wind Icon40km/h
Mon. 22, Sep.
heavy rainHeavy rain
Temperature Icon9°/6°
Humidity Icon83%
Wind Icon40km/h
Tue. 23, Sep.
moderate rainModerate rain
Temperature Icon8°/4°
Humidity Icon84%
Wind Icon17km/h
Wed. 24, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon11°/5°
Humidity Icon76%
Wind Icon16km/h
Thu. 25, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon11°/6°
Humidity Icon68%
Wind Icon22km/h
Fri. 26, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon11°/9°
Humidity Icon78%
Wind Icon14km/h
Sat. 27, Sep.
sunnySunny
Temperature Icon13°/8°
Humidity Icon82%
Wind Icon8km/h
Sun. 28, Sep.
sunnySunny
Temperature Icon12°/8°
Humidity Icon72%
Wind Icon5km/h
Mon. 29, Sep.
sunnySunny
Temperature Icon12°/8°
Humidity Icon82%
Wind Icon5km/h
Tue. 30, Sep.
sunnySunny
Temperature Icon11°/7°
Humidity Icon84%
Wind Icon6km/h
Wed. 1, Oct.
sunnySunny
Temperature Icon11°/7°
Humidity Icon79%
Wind Icon10km/h
Thu. 2, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon11°/8°
Humidity Icon83%
Wind Icon18km/h
Fri. 3, Oct.
sunnySunny
Temperature Icon12°/8°
Humidity Icon79%
Wind Icon8km/h
Sat. 4, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon11°/5°
Humidity Icon78%
Wind Icon18km/h
Sun. 5, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon10°/5°
Humidity Icon78%
Wind Icon16km/h
Mon. 6, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon9°/4°
Humidity Icon79%
Wind Icon18km/h
Tue. 7, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon10°/4°
Humidity Icon81%
Wind Icon19km/h
Wed. 8, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon9°/4°
Humidity Icon84%
Wind Icon16km/h
Thu. 9, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon8°/3°
Humidity Icon86%
Wind Icon14km/h
Fri. 10, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon9°/3°
Humidity Icon84%
Wind Icon12km/h
Sat. 11, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon8°/3°
Humidity Icon84%
Wind Icon14km/h
Sun. 12, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon8°/3°
Humidity Icon83%
Wind Icon14km/h
Mon. 13, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon8°/3°
Humidity Icon83%
Wind Icon13km/h
Tue. 14, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon8°/2°
Humidity Icon80%
Wind Icon14km/h
Wed. 15, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/2°
Humidity Icon80%
Wind Icon13km/h
Thu. 16, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/3°
Humidity Icon82%
Wind Icon13km/h
Fri. 17, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/3°
Humidity Icon83%
Wind Icon14km/h
Sat. 18, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/2°
Humidity Icon85%
Wind Icon14km/h
Sun. 19, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/2°
Humidity Icon85%
Wind Icon13km/h
Mon. 20, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/1°
Humidity Icon80%
Wind Icon15km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSat. 20, Sep.

13.3°C

Low will be onMon. 20, Oct.

1.3°C

HumidityHumidity

High will be onThu. 9, Oct.

86%

Low will be onThu. 25, Sep.

68%

Wind SpeedWind Speed

High will be onMon. 22, Sep.

40.3km/h

Low will be onSun. 28, Sep.

5.4km/h

PrecipitationPrecipitation

High will be onMon. 22, Sep.

29.2mm

Low will be onFri. 3, Oct.

0.02mm

Ultraviolet IndexUV

High will be onSat. 27, Sep.

3

Low will be onSun. 21, Sep.

0.1

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