Omihachiman, Shiga, Japan Climate Change Severity

38
Moderate
The current climate change severity in Omihachiman is Moderate, with a 7.4% 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)

Omihachiman 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), Omihachiman temperature has changed by around +3.6%, 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
3723
-37.8%
cloudyCloudy
6238
-38.7%
rainyRainy
162139
-14.1%
snowySnowy
55
0%
mistyMisty
00
0%

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

Climate Change Indicators:

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

Temperature change of

+0.5 °C

Variation in annual rainfall

-22.6 %

Change in average humidity

-4.4 %

PM2.5 levels surged by

-8.5 %

Heatwave changed by

-2.6 day(s)

Coldwave changed by

-1.8 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.

Omihachiman Weather Forecast 30 Days (November - December 2025)
Omihachiman, Shiga, Japan

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Sun. 2, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon18°/12°
Humidity Icon68%
Wind Icon21km/h
Mon. 3, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon13°/10°
Humidity Icon66%
Wind Icon26km/h
Tue. 4, Nov.
sunnySunny
Temperature Icon15°/8°
Humidity Icon62%
Wind Icon13km/h
Wed. 5, Nov.
partly cloudyPartly Cloudy
Temperature Icon17°/12°
Humidity Icon66%
Wind Icon7km/h
Thu. 6, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon19°/13°
Humidity Icon68%
Wind Icon18km/h
Fri. 7, Nov.
sunnySunny
Temperature Icon18°/11°
Humidity Icon70%
Wind Icon9km/h
Sat. 8, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon19°/12°
Humidity Icon69%
Wind Icon8km/h
Sun. 9, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon16°/15°
Humidity Icon83%
Wind Icon5km/h
Mon. 10, Nov.
sunnySunny
Temperature Icon19°/13°
Humidity Icon78%
Wind Icon8km/h
Tue. 11, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon18°/15°
Humidity Icon87%
Wind Icon8km/h
Wed. 12, Nov.
sunnySunny
Temperature Icon16°/12°
Humidity Icon71%
Wind Icon14km/h
Thu. 13, Nov.
sunnySunny
Temperature Icon16°/10°
Humidity Icon61%
Wind Icon5km/h
Fri. 14, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon16°/12°
Humidity Icon74%
Wind Icon28km/h
Sat. 15, Nov.
partly cloudyPartly Cloudy
Temperature Icon11°/9°
Humidity Icon57%
Wind Icon24km/h
Sun. 16, Nov.
sunnySunny
Temperature Icon13°/8°
Humidity Icon55%
Wind Icon15km/h
Mon. 17, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/9°
Humidity Icon78%
Wind Icon14km/h
Tue. 18, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/7°
Humidity Icon79%
Wind Icon19km/h
Wed. 19, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/7°
Humidity Icon77%
Wind Icon18km/h
Thu. 20, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/8°
Humidity Icon77%
Wind Icon16km/h
Fri. 21, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/7°
Humidity Icon74%
Wind Icon14km/h
Sun. 23, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/7°
Humidity Icon80%
Wind Icon18km/h
Mon. 24, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/6°
Humidity Icon75%
Wind Icon18km/h
Tue. 25, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/7°
Humidity Icon75%
Wind Icon16km/h
Wed. 26, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/7°
Humidity Icon78%
Wind Icon16km/h
Thu. 27, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/7°
Humidity Icon78%
Wind Icon16km/h
Fri. 28, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/6°
Humidity Icon74%
Wind Icon20km/h
Sat. 29, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/6°
Humidity Icon76%
Wind Icon17km/h
Sun. 30, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/6°
Humidity Icon78%
Wind Icon17km/h
Mon. 1, Dec.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/6°
Humidity Icon76%
Wind Icon18km/h
Tue. 2, Dec.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon12°/5°
Humidity Icon76%
Wind Icon17km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onMon. 10, Nov.

19.4°C

Low will be onTue. 2, Dec.

4.9°C

HumidityHumidity

High will be onTue. 11, Nov.

87%

Low will be onSun. 16, Nov.

55%

Wind SpeedWind Speed

High will be onFri. 14, Nov.

27.7km/h

Low will be onSun. 9, Nov.

5km/h

PrecipitationPrecipitation

High will be onMon. 17, Nov.

7.4mm

Low will be onSat. 8, Nov.

0.03mm

Ultraviolet IndexUV

High will be onMon. 10, Nov.

5

Low will be onMon. 3, Nov.

0.6