Muroran, Hokkaido, Japan Climate Change Severity

57
High
The current climate change severity in Muroran is High, with a 22.1% 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

Muroran 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), Muroran temperature has changed by around +26.7%, 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
2122
4.7%
cloudyCloudy
5424
-55.5%
rainyRainy
7587
16%
snowySnowy
1316
23.07%
mistyMisty
01
100%

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

Climate Change Indicators:

Over the past 15 years, Muroran 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, Muroran experienced significant changes:

Temperature change of

+1.5 °C

Variation in annual rainfall

-12.8 %

Change in average humidity

-2.1 %

PM2.5 levels surged by

-29.8 %

Heatwave changed by

+2.6 day(s)

Coldwave changed by

-3.6 day(s)

Wind speeds changed by

+4.1 km/h

These indicators show that Muroran 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.

Muroran Weather Forecast 30 Days (August - September 2025)
Muroran, Hokkaido, Japan

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Fri. 8, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon24°/19°
Humidity Icon88%
Wind Icon23km/h
Sat. 9, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon24°/18°
Humidity Icon83%
Wind Icon11km/h
Sun. 10, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon24°/18°
Humidity Icon86%
Wind Icon10km/h
Mon. 11, Aug.
sunnySunny
Temperature Icon24°/18°
Humidity Icon85%
Wind Icon12km/h
Tue. 12, Aug.
sunnySunny
Temperature Icon24°/19°
Humidity Icon87%
Wind Icon9km/h
Wed. 13, Aug.
sunnySunny
Temperature Icon25°/20°
Humidity Icon83%
Wind Icon8km/h
Thu. 14, Aug.
sunnySunny
Temperature Icon23°/19°
Humidity Icon85%
Wind Icon17km/h
Fri. 15, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon22°/19°
Humidity Icon92%
Wind Icon18km/h
Sat. 16, Aug.
partly cloudyPartly Cloudy
Temperature Icon24°/20°
Humidity Icon89%
Wind Icon14km/h
Sun. 17, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon23°/20°
Humidity Icon93%
Wind Icon20km/h
Mon. 18, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon22°/20°
Humidity Icon91%
Wind Icon22km/h
Tue. 19, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon21°/19°
Humidity Icon90%
Wind Icon21km/h
Wed. 20, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon20°/19°
Humidity Icon94%
Wind Icon21km/h
Thu. 21, Aug.
sunnySunny
Temperature Icon24°/19°
Humidity Icon80%
Wind Icon8km/h
Fri. 22, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/19°
Humidity Icon87%
Wind Icon17km/h
Sat. 23, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/19°
Humidity Icon88%
Wind Icon16km/h
Sun. 24, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/18°
Humidity Icon88%
Wind Icon16km/h
Mon. 25, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/18°
Humidity Icon87%
Wind Icon16km/h
Tue. 26, Aug.
moderate rain at timesModerate rain at times
Temperature Icon23°/17°
Humidity Icon84%
Wind Icon16km/h
Wed. 27, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/18°
Humidity Icon85%
Wind Icon15km/h
Thu. 28, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/17°
Humidity Icon82%
Wind Icon15km/h
Fri. 29, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/17°
Humidity Icon84%
Wind Icon18km/h
Sat. 30, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/17°
Humidity Icon85%
Wind Icon21km/h
Sun. 31, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/17°
Humidity Icon86%
Wind Icon18km/h
Mon. 1, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/17°
Humidity Icon85%
Wind Icon16km/h
Tue. 2, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/18°
Humidity Icon85%
Wind Icon16km/h
Wed. 3, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/18°
Humidity Icon87%
Wind Icon19km/h
Thu. 4, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/18°
Humidity Icon87%
Wind Icon20km/h
Fri. 5, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/18°
Humidity Icon89%
Wind Icon20km/h
Sat. 6, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/18°
Humidity Icon88%
Wind Icon18km/h
Sun. 7, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/17°
Humidity Icon85%
Wind Icon17km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onWed. 13, Aug.

25.4°C

Low will be onThu. 28, Aug.

17.1°C

HumidityHumidity

High will be onWed. 20, Aug.

94%

Low will be onThu. 21, Aug.

80%

Wind SpeedWind Speed

High will be onFri. 8, Aug.

23.4km/h

Low will be onWed. 13, Aug.

7.9km/h

PrecipitationPrecipitation

High will be onSat. 30, Aug.

14.7mm

Low will be onThu. 14, Aug.

0.01mm

Ultraviolet IndexUV

High will be onWed. 13, Aug.

6

Low will be onFri. 8, Aug.

1.5

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