Harstad, Troms, Norway Climate Change Severity

43
High
The current climate change severity in Harstad is High, with a 2.5% 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 Jul. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

Harstad 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), Harstad temperature has changed by around +14.6%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
2215
-31.8%
cloudyCloudy
3916
-58.9%
rainyRainy
10993
-14.6%
snowySnowy
1938
100%
mistyMisty
00
0%

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

Climate Change Indicators:

Over the past 15 years, Harstad has experienced measurable shifts in key climate parameters, contributing to the current severity score of 43 (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

43/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Harstad experienced significant changes:

Temperature change of

+0.3 °C

Variation in annual rainfall

+32.3 %

Change in average humidity

+3.05 %

PM2.5 levels surged by

-15.7 %

Heatwave changed by

-5.4 day(s)

Coldwave changed by

-6.2 day(s)

Wind speeds changed by

+1.2 km/h

These indicators show that Harstad 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 Jul.

Harstad Weather Forecast 30 Days (August - September 2025)
Harstad, Troms, Norway

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Fri. 8, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon16°/10°
Humidity Icon75%
Wind Icon18km/h
Sat. 9, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon16°/12°
Humidity Icon78%
Wind Icon20km/h
Sun. 10, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon18°/12°
Humidity Icon79%
Wind Icon16km/h
Mon. 11, Aug.
moderate rainModerate rain
Temperature Icon13°/11°
Humidity Icon90%
Wind Icon9km/h
Tue. 12, Aug.
moderate rainModerate rain
Temperature Icon12°/9°
Humidity Icon92%
Wind Icon9km/h
Wed. 13, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon13°/9°
Humidity Icon81%
Wind Icon9km/h
Thu. 14, Aug.
sunnySunny
Temperature Icon14°/9°
Humidity Icon76%
Wind Icon8km/h
Fri. 15, Aug.
sunnySunny
Temperature Icon16°/11°
Humidity Icon78%
Wind Icon8km/h
Sat. 16, Aug.
cloudyCloudy
Temperature Icon16°/13°
Humidity Icon80%
Wind Icon10km/h
Sun. 17, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon12°/10°
Humidity Icon90%
Wind Icon16km/h
Mon. 18, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon16°/9°
Humidity Icon69%
Wind Icon13km/h
Tue. 19, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon15°/9°
Humidity Icon84%
Wind Icon14km/h
Wed. 20, Aug.
moderate rainModerate rain
Temperature Icon13°/9°
Humidity Icon89%
Wind Icon22km/h
Thu. 21, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon13°/10°
Humidity Icon87%
Wind Icon31km/h
Fri. 22, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/10°
Humidity Icon81%
Wind Icon14km/h
Sat. 23, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/9°
Humidity Icon80%
Wind Icon16km/h
Sun. 24, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/9°
Humidity Icon76%
Wind Icon13km/h
Mon. 25, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/9°
Humidity Icon76%
Wind Icon15km/h
Tue. 26, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/9°
Humidity Icon77%
Wind Icon16km/h
Wed. 27, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/9°
Humidity Icon76%
Wind Icon17km/h
Thu. 28, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/9°
Humidity Icon76%
Wind Icon17km/h
Fri. 29, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/10°
Humidity Icon79%
Wind Icon18km/h
Sat. 30, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/9°
Humidity Icon80%
Wind Icon19km/h
Sun. 31, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon12°/8°
Humidity Icon81%
Wind Icon18km/h
Mon. 1, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/8°
Humidity Icon81%
Wind Icon16km/h
Tue. 2, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon12°/8°
Humidity Icon79%
Wind Icon16km/h
Wed. 3, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon12°/8°
Humidity Icon78%
Wind Icon19km/h
Thu. 4, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon12°/8°
Humidity Icon80%
Wind Icon18km/h
Fri. 5, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon12°/9°
Humidity Icon82%
Wind Icon16km/h
Sat. 6, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon12°/8°
Humidity Icon81%
Wind Icon16km/h
Sun. 7, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon12°/8°
Humidity Icon80%
Wind Icon13km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSun. 10, Aug.

18°C

Low will be onSun. 7, Sep.

8°C

HumidityHumidity

High will be onTue. 12, Aug.

92%

Low will be onMon. 18, Aug.

69%

Wind SpeedWind Speed

High will be onThu. 21, Aug.

31km/h

Low will be onThu. 14, Aug.

7.9km/h

PrecipitationPrecipitation

High will be onTue. 12, Aug.

12.4mm

Low will be onSat. 16, Aug.

0.01mm

Ultraviolet IndexUV

High will be onThu. 14, Aug.

4

Low will be onMon. 11, Aug.

0.2

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