Santa Cruz, California, United States Climate Change Severity

52
High
The current climate change severity in Santa Cruz is High, with a 6.9% 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

Santa Cruz 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), Santa Cruz temperature has changed by around -6.6%, 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
7814
-82.05%
cloudyCloudy
6237
-40.3%
rainyRainy
4834
-29.1%
snowySnowy
00
0%
mistyMisty
053
100%

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

Climate Change Indicators:

Over the past 15 years, Santa Cruz has experienced measurable shifts in key climate parameters, contributing to the current severity score of 52 (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

52/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Santa Cruz experienced significant changes:

Temperature change of

-0.8 °C

Variation in annual rainfall

-23.1 %

Change in average humidity

+14.02 %

PM2.5 levels surged by

+100 %

Heatwave changed by

-5.1 day(s)

Coldwave changed by

-0.3 day(s)

Wind speeds changed by

-1.6 km/h

These indicators show that Santa Cruz 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.

Santa Cruz Weather Forecast 30 Days (August - September 2025)
Santa Cruz, California, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Sat. 9, Aug.
partly cloudyPartly Cloudy
Temperature Icon20°/13°
Humidity Icon85%
Wind Icon13km/h
Sun. 10, Aug.
partly cloudyPartly Cloudy
Temperature Icon21°/13°
Humidity Icon84%
Wind Icon12km/h
Mon. 11, Aug.
partly cloudyPartly Cloudy
Temperature Icon25°/14°
Humidity Icon76%
Wind Icon12km/h
Tue. 12, Aug.
sunnySunny
Temperature Icon24°/14°
Humidity Icon69%
Wind Icon13km/h
Wed. 13, Aug.
sunnySunny
Temperature Icon22°/13°
Humidity Icon76%
Wind Icon13km/h
Thu. 14, Aug.
partly cloudyPartly Cloudy
Temperature Icon25°/13°
Humidity Icon73%
Wind Icon19km/h
Fri. 15, Aug.
sunnySunny
Temperature Icon23°/13°
Humidity Icon71%
Wind Icon27km/h
Sat. 16, Aug.
partly cloudyPartly Cloudy
Temperature Icon20°/14°
Humidity Icon82%
Wind Icon12km/h
Sun. 17, Aug.
sunnySunny
Temperature Icon21°/15°
Humidity Icon78%
Wind Icon12km/h
Mon. 18, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon22°/14°
Humidity Icon78%
Wind Icon12km/h
Tue. 19, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon22°/14°
Humidity Icon74%
Wind Icon12km/h
Wed. 20, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon24°/14°
Humidity Icon67%
Wind Icon12km/h
Thu. 21, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon23°/15°
Humidity Icon67%
Wind Icon12km/h
Fri. 22, Aug.
sunnySunny
Temperature Icon22°/14°
Humidity Icon76%
Wind Icon16km/h
Sat. 23, Aug.
sunnySunny
Temperature Icon21°/14°
Humidity Icon75%
Wind Icon16km/h
Sun. 24, Aug.
sunnySunny
Temperature Icon22°/14°
Humidity Icon75%
Wind Icon16km/h
Mon. 25, Aug.
sunnySunny
Temperature Icon21°/14°
Humidity Icon74%
Wind Icon14km/h
Tue. 26, Aug.
sunnySunny
Temperature Icon22°/14°
Humidity Icon71%
Wind Icon16km/h
Wed. 27, Aug.
sunnySunny
Temperature Icon23°/14°
Humidity Icon68%
Wind Icon17km/h
Thu. 28, Aug.
sunnySunny
Temperature Icon23°/15°
Humidity Icon69%
Wind Icon16km/h
Fri. 29, Aug.
sunnySunny
Temperature Icon22°/14°
Humidity Icon72%
Wind Icon17km/h
Sat. 30, Aug.
sunnySunny
Temperature Icon22°/14°
Humidity Icon73%
Wind Icon17km/h
Sun. 31, Aug.
sunnySunny
Temperature Icon22°/14°
Humidity Icon73%
Wind Icon16km/h
Mon. 1, Sep.
sunnySunny
Temperature Icon23°/15°
Humidity Icon65%
Wind Icon17km/h
Tue. 2, Sep.
sunnySunny
Temperature Icon23°/15°
Humidity Icon68%
Wind Icon16km/h
Wed. 3, Sep.
sunnySunny
Temperature Icon23°/14°
Humidity Icon69%
Wind Icon17km/h
Thu. 4, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon22°/14°
Humidity Icon70%
Wind Icon16km/h
Fri. 5, Sep.
sunnySunny
Temperature Icon22°/14°
Humidity Icon71%
Wind Icon16km/h
Sat. 6, Sep.
sunnySunny
Temperature Icon24°/15°
Humidity Icon65%
Wind Icon16km/h
Sun. 7, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon23°/15°
Humidity Icon65%
Wind Icon16km/h
Mon. 8, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon23°/15°
Humidity Icon66%
Wind Icon16km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onMon. 11, Aug.

24.7°C

Low will be onThu. 14, Aug.

12.6°C

HumidityHumidity

High will be onSat. 9, Aug.

85%

Low will be onMon. 1, Sep.

65%

Wind SpeedWind Speed

High will be onFri. 15, Aug.

27km/h

Low will be onTue. 19, Aug.

11.5km/h

PrecipitationPrecipitation

High will be onTue. 12, Aug.

0.1mm

Low will be onSat. 9, Aug.

0.01mm

Ultraviolet IndexUV

High will be onWed. 13, Aug.

5

Low will be onMon. 18, Aug.

4

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