Reykjavik, Reykjavikurborg, Iceland Climate Change Severity

38
Moderate
The current climate change severity in Reykjavik is Moderate, with a 15.05% 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 Sep. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Reykjavik 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), Reykjavik temperature has changed by around +12.7%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
1824
33.3%
cloudyCloudy
4429
-34.09%
rainyRainy
164128
-21.9%
snowySnowy
1216
33.3%
mistyMisty
00
0%

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

Climate Change Indicators:

Over the past 15 years, Reykjavik has experienced measurable improvements in key climate parameters, contributing to the current severity score of 38 (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

38/100

Moderate

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Reykjavik experienced significant changes:

Temperature change of

+0.7 °C

Variation in annual rainfall

+18.6 %

Change in average humidity

+0.7 %

PM2.5 levels surged by

+100 %

Heatwave changed by

+5.4 day(s)

Coldwave changed by

-1 day(s)

Wind speeds changed by

+1.01 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 Sep.

Reykjavik Weather Forecast 30 Days (October - November 2025)
Reykjavik, Reykjavikurborg, Iceland

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Sun. 19, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon6°/5°
Humidity Icon83%
Wind Icon10km/h
Mon. 20, Oct.
heavy rainHeavy rain
Temperature Icon5°/3°
Humidity Icon94%
Wind Icon25km/h
Tue. 21, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon4°/0°
Humidity Icon68%
Wind Icon33km/h
Wed. 22, Oct.
partly cloudyPartly Cloudy
Temperature Icon2°/0°
Humidity Icon65%
Wind Icon37km/h
Thu. 23, Oct.
partly cloudyPartly Cloudy
Temperature Icon4°/2°
Humidity Icon69%
Wind Icon34km/h
Fri. 24, Oct.
sunnySunny
Temperature Icon2°/1°
Humidity Icon74%
Wind Icon17km/h
Sat. 25, Oct.
sunnySunny
Temperature Icon1°/0°
Humidity Icon65%
Wind Icon10km/h
Sun. 26, Oct.
moderate rainModerate rain
Temperature Icon3°/1°
Humidity Icon81%
Wind Icon45km/h
Mon. 27, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon3°/1°
Humidity Icon92%
Wind Icon21km/h
Tue. 28, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon2°/1°
Humidity Icon85%
Wind Icon22km/h
Wed. 29, Oct.
partly cloudyPartly Cloudy
Temperature Icon1°/-2°
Humidity Icon78%
Wind Icon18km/h
Thu. 30, Oct.
sunnySunny
Temperature Icon-2°/-4°
Humidity Icon79%
Wind Icon16km/h
Fri. 31, Oct.
cloudyCloudy
Temperature Icon-1°/-5°
Humidity Icon73%
Wind Icon22km/h
Sat. 1, Nov.
partly cloudyPartly Cloudy
Temperature Icon-1°/-3°
Humidity Icon68%
Wind Icon21km/h
Sun. 2, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/1°
Humidity Icon80%
Wind Icon33km/h
Mon. 3, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/1°
Humidity Icon78%
Wind Icon28km/h
Tue. 4, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/2°
Humidity Icon82%
Wind Icon26km/h
Wed. 5, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/2°
Humidity Icon81%
Wind Icon36km/h
Thu. 6, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/2°
Humidity Icon77%
Wind Icon32km/h
Fri. 7, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/2°
Humidity Icon84%
Wind Icon34km/h
Sat. 8, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/2°
Humidity Icon82%
Wind Icon38km/h
Sun. 9, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/2°
Humidity Icon82%
Wind Icon31km/h
Mon. 10, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/1°
Humidity Icon81%
Wind Icon32km/h
Wed. 12, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/1°
Humidity Icon80%
Wind Icon33km/h
Thu. 13, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/2°
Humidity Icon78%
Wind Icon34km/h
Fri. 14, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/2°
Humidity Icon81%
Wind Icon34km/h
Sat. 15, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/1°
Humidity Icon77%
Wind Icon37km/h
Sun. 16, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/1°
Humidity Icon77%
Wind Icon31km/h
Mon. 17, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon3°/1°
Humidity Icon76%
Wind Icon29km/h
Tue. 18, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon2°/0°
Humidity Icon77%
Wind Icon28km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSun. 19, Oct.

6°C

Low will be onFri. 31, Oct.

-4.8°C

HumidityHumidity

High will be onMon. 20, Oct.

94%

Low will be onWed. 22, Oct.

65%

Wind SpeedWind Speed

High will be onSun. 26, Oct.

44.6km/h

Low will be onSun. 19, Oct.

10.4km/h

PrecipitationPrecipitation

High will be onMon. 20, Oct.

32.2mm

Low will be onWed. 29, Oct.

0.01mm

Ultraviolet IndexUV

High will be onFri. 24, Oct.

2

Low will be onSun. 26, Oct.

1

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