Sayama, Saitama, Japan Climate Change Severity

48
High
The current climate change severity in Sayama is High, with a 5.06% improvement in the climate score compared to last 16 years. This suggests improved conditions, with more favorable environmental indicators and a reduction in negative impacts.
Data: Jan. to Jul. (Historical Vs 2026) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

Sayama Weather Condition Changes (Historic Vs 2026)

2026
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2026

Over the past 16 year(s), Sayama temperature has changed by around +10.1%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Jul. (Historical Vs 2026)

Comparison of Weather Condition (Historic Vs 2026)

HistoricDays

Year 2026Days

Change

sunnySunny
4852
8.3%
cloudyCloudy
5441
-24.07%
rainyRainy
8988
-1.1%
snowySnowy
13
200%
mistyMisty
00
0%

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

Climate Change Indicators:

Over the past 16 years, Sayama has experienced measurable shifts in key climate parameters, contributing to the current severity score of 48 (within the High severity category). While the score remains High, certain factors have improved over time. Here’s a breakdown of the specific changes observed:

Severity Score

48/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2026, Sayama experienced significant changes:

Temperature change of

+1.46 °C

Variation in annual rainfall

-4.94 %

Change in average humidity

-7.32 %

PM2.5 levels surged by

-16.02 %

Heatwave changed by

+7 Days

Coldwave changed by

-1 Days

Wind speeds changed by

+0.88 km/h

These indicators show improvement in key parametes of climate, but Sayama remains in the High severity category. Continuous focus on climate resilience is necessary to avoid further worsening and ensure sustainability.

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

Sayama Weather Forecast 30 Days (August - September 2026)
Sayama, Saitama, Japan

Condition
Temperature IconTemperature
Humidity IconHumi.
Wind IconWind Speed
Tue. 4, Aug.
partly cloudyPartly Cloudy
Temperature Icon30°/22°
Humidity Icon59%
Wind Icon19.1km/h
Wed. 5, Aug.
overcastOvercast
Temperature Icon30°/23°
Humidity Icon67%
Wind Icon12.2km/h
Thu. 6, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon33°/25°
Humidity Icon67%
Wind Icon20.5km/h
Fri. 7, Aug.
light rain showerRain Shower
Temperature Icon29°/25°
Humidity Icon73%
Wind Icon11.9km/h
Sat. 8, Aug.
sunnySunny
Temperature Icon34°/25°
Humidity Icon63%
Wind Icon19.4km/h
Sun. 9, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon31°/24°
Humidity Icon65%
Wind Icon17.6km/h
Mon. 10, Aug.
partly cloudyPartly Cloudy
Temperature Icon29°/23°
Humidity Icon65%
Wind Icon22km/h
Tue. 11, Aug.
partly cloudyPartly Cloudy
Temperature Icon32°/23°
Humidity Icon61%
Wind Icon18.7km/h
Wed. 12, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon31°/24°
Humidity Icon73%
Wind Icon13.6km/h
Thu. 13, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon32°/25°
Humidity Icon70%
Wind Icon13.5km/h
Fri. 14, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon31°/25°
Humidity Icon70%
Wind Icon14.1km/h
Sat. 15, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon32°/25°
Humidity Icon71%
Wind Icon16.1km/h
Sun. 16, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon31°/24°
Humidity Icon73%
Wind Icon17km/h
Mon. 17, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon32°/24°
Humidity Icon69%
Wind Icon16km/h
Tue. 18, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon32°/25°
Humidity Icon69%
Wind Icon14km/h
Wed. 19, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon32°/24°
Humidity Icon68%
Wind Icon15.4km/h
Thu. 20, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon31°/24°
Humidity Icon69%
Wind Icon12.7km/h
Fri. 21, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon31°/24°
Humidity Icon69%
Wind Icon13.5km/h
Sat. 22, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon32°/25°
Humidity Icon71%
Wind Icon14.9km/h
Sun. 23, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon32°/25°
Humidity Icon69%
Wind Icon14.7km/h
Mon. 24, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon32°/25°
Humidity Icon66%
Wind Icon15.1km/h
Tue. 25, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon31°/24°
Humidity Icon67%
Wind Icon14.4km/h
Wed. 26, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon31°/23°
Humidity Icon71%
Wind Icon13.2km/h
Thu. 27, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon31°/23°
Humidity Icon68%
Wind Icon15.3km/h
Fri. 28, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon30°/23°
Humidity Icon70%
Wind Icon13.9km/h
Sat. 29, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon31°/23°
Humidity Icon69%
Wind Icon12.7km/h
Sun. 30, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon31°/23°
Humidity Icon72%
Wind Icon13.8km/h
Mon. 31, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon30°/23°
Humidity Icon71%
Wind Icon16.5km/h
Tue. 1, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon29°/22°
Humidity Icon74%
Wind Icon13.6km/h
Wed. 2, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon29°/23°
Humidity Icon72%
Wind Icon15.7km/h
Thu. 3, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon29°/23°
Humidity Icon74%
Wind Icon15km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSat. 8, Aug.

34°C

Low will be onTue. 4, Aug.

22°C

HumidityHumidity

High will be onTue. 1, Sep.

74%

Low will be onTue. 4, Aug.

59%

Wind SpeedWind Speed

High will be onMon. 10, Aug.

22km/h

Low will be onFri. 7, Aug.

11.9km/h

PrecipitationPrecipitation

High will be onWed. 2, Sep.

13.4mm

Low will be onTue. 4, Aug.

0.02mm

Ultraviolet IndexUV

High will be onTue. 4, Aug.

10

Low will be onWed. 12, Aug.

6

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