Sundsvall, Vasternorrland, Sweden Climate Change Severity

33
Moderate
The current climate change severity in Sundsvall is Moderate, with a 25.6% improvement in the climate score compared to last 15 years. This suggests improved conditions, with more favorable environmental indicators and a reduction in negative impacts.
Data: Jan. to Oct. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Sundsvall 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), Sundsvall temperature has changed by around +10.9%, 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
3624
-33.3%
cloudyCloudy
7657
-25%
rainyRainy
12582
-34.4%
snowySnowy
138
-38.4%
mistyMisty
04
100%

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

Climate Change Indicators:

Over the past 15 years, Sundsvall has experienced measurable improvements in key climate parameters, contributing to the current severity score of 33 (within the Moderate severity category). This suggests improving climate conditions compared to previous years. Here’s a breakdown of the specific changes observed:

Severity Score

33/100

Moderate

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Sundsvall experienced significant changes:

Temperature change of

+0.6 °C

Variation in annual rainfall

-7.9 %

Change in average humidity

-2.5 %

PM2.5 levels surged by

-18.6 %

Heatwave changed by

+5.9 day(s)

Coldwave changed by

-4.8 day(s)

Wind speeds changed by

+1.6 km/h

These indicators show reduced climate volatility, offering a valuable window to reinforce sustainable practices and strengthen long-term climate resilience. As the severity shifts toward Moderate, it is important to maintain momentum in climate adaptation efforts.

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

Sundsvall Weather Forecast 30 Days (November - December 2025)
Sundsvall, Vasternorrland, Sweden

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Fri. 14, Nov.
light freezing rainLight freezing rain
Temperature Icon0°/-2°
Humidity Icon61%
Wind Icon17km/h
Sat. 15, Nov.
overcastOvercast
Temperature Icon3°/-2°
Humidity Icon53%
Wind Icon28km/h
Sun. 16, Nov.
overcastOvercast
Temperature Icon1°/-2°
Humidity Icon75%
Wind Icon23km/h
Mon. 17, Nov.
light freezing rainLight freezing rain
Temperature Icon-1°/-3°
Humidity Icon74%
Wind Icon9km/h
Tue. 18, Nov.
patchy moderate snowPatchy moderate snow
Temperature Icon-1°/-4°
Humidity Icon86%
Wind Icon7km/h
Wed. 19, Nov.
partly cloudyPartly Cloudy
Temperature Icon-4°/-6°
Humidity Icon88%
Wind Icon6km/h
Thu. 20, Nov.
overcastOvercast
Temperature Icon-5°/-7°
Humidity Icon79%
Wind Icon7km/h
Fri. 21, Nov.
overcastOvercast
Temperature Icon-4°/-6°
Humidity Icon76%
Wind Icon16km/h
Sat. 22, Nov.
partly cloudyPartly Cloudy
Temperature Icon-6°/-8°
Humidity Icon74%
Wind Icon13km/h
Sun. 23, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-3°/-8°
Humidity Icon82%
Wind Icon21km/h
Mon. 24, Nov.
heavy snowHeavy snow
Temperature Icon1°/-1°
Humidity Icon98%
Wind Icon29km/h
Tue. 25, Nov.
light freezing rainLight freezing rain
Temperature Icon-1°/-2°
Humidity Icon79%
Wind Icon19km/h
Wed. 26, Nov.
mistMist
Temperature Icon-3°/-7°
Humidity Icon95%
Wind Icon9km/h
Thu. 27, Nov.
fogFog
Temperature Icon1°/-4°
Humidity Icon96%
Wind Icon19km/h
Fri. 28, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-1°/-4°
Humidity Icon83%
Wind Icon16km/h
Sat. 29, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-1°/-4°
Humidity Icon88%
Wind Icon14km/h
Sun. 30, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-1°/-4°
Humidity Icon87%
Wind Icon17km/h
Mon. 1, Dec.
patchy moderate snowPatchy moderate snow
Temperature Icon-1°/-4°
Humidity Icon86%
Wind Icon19km/h
Tue. 2, Dec.
patchy moderate snowPatchy moderate snow
Temperature Icon-2°/-5°
Humidity Icon82%
Wind Icon17km/h
Wed. 3, Dec.
moderate snowModerate snow
Temperature Icon-1°/-5°
Humidity Icon84%
Wind Icon16km/h
Thu. 4, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-1°/-5°
Humidity Icon87%
Wind Icon17km/h
Fri. 5, Dec.
patchy moderate snowPatchy moderate snow
Temperature Icon-2°/-6°
Humidity Icon87%
Wind Icon18km/h
Sat. 6, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-2°/-6°
Humidity Icon86%
Wind Icon17km/h
Sun. 7, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-1°/-5°
Humidity Icon89%
Wind Icon17km/h
Mon. 8, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-1°/-5°
Humidity Icon90%
Wind Icon16km/h
Tue. 9, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon0°/-4°
Humidity Icon91%
Wind Icon16km/h
Wed. 10, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-1°/-4°
Humidity Icon87%
Wind Icon15km/h
Thu. 11, Dec.
moderate snowModerate snow
Temperature Icon-1°/-4°
Humidity Icon86%
Wind Icon15km/h
Fri. 12, Dec.
moderate snowModerate snow
Temperature Icon-2°/-6°
Humidity Icon87%
Wind Icon17km/h
Sat. 13, Dec.
patchy moderate snowPatchy moderate snow
Temperature Icon-3°/-7°
Humidity Icon87%
Wind Icon14km/h
Sun. 14, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-3°/-8°
Humidity Icon88%
Wind Icon14km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSat. 15, Nov.

2.7°C

Low will be onSat. 22, Nov.

-8°C

HumidityHumidity

High will be onMon. 24, Nov.

98%

Low will be onSat. 15, Nov.

53%

Wind SpeedWind Speed

High will be onMon. 24, Nov.

29.2km/h

Low will be onWed. 19, Nov.

6.1km/h

PrecipitationPrecipitation

High will be onMon. 24, Nov.

8.8mm

Low will be onSun. 16, Nov.

0.01mm

Ultraviolet IndexUV

High will be onWed. 19, Nov.

2

Low will be onThu. 20, Nov.

1

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