Hamilton, Waikato, New Zealand Climate Change Severity

38
Moderate
The current climate change severity in Hamilton is Moderate, with a 4.04% 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 Aug. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Hamilton 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), Hamilton temperature has changed by around +0.03%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
3027
-10%
cloudyCloudy
5644
-21.4%
rainyRainy
122104
-14.7%
snowySnowy
00
0%
mistyMisty
06
100%

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

Climate Change Indicators:

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

Temperature change of

+0.005 °C

Variation in annual rainfall

+0.7 %

Change in average humidity

-4.004 %

PM2.5 levels surged by

-33.5 %

Heatwave changed by

+3.8 day(s)

Coldwave changed by

-1.7 day(s)

Wind speeds changed by

+0.04 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 Aug.

Hamilton Weather Forecast 30 Days (September - October 2025)
Hamilton, Waikato, New Zealand

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Thu. 25, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon16°/8°
Humidity Icon86%
Wind Icon28km/h
Fri. 26, Sep.
moderate rainModerate rain
Temperature Icon16°/7°
Humidity Icon78%
Wind Icon26km/h
Sat. 27, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon18°/8°
Humidity Icon86%
Wind Icon18km/h
Sun. 28, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon20°/8°
Humidity Icon90%
Wind Icon19km/h
Mon. 29, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon18°/12°
Humidity Icon91%
Wind Icon30km/h
Tue. 30, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon16°/6°
Humidity Icon84%
Wind Icon22km/h
Wed. 1, Oct.
sunnySunny
Temperature Icon15°/5°
Humidity Icon76%
Wind Icon28km/h
Thu. 2, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon17°/6°
Humidity Icon77%
Wind Icon14km/h
Fri. 3, Oct.
partly cloudyPartly Cloudy
Temperature Icon17°/9°
Humidity Icon83%
Wind Icon27km/h
Sat. 4, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon20°/8°
Humidity Icon93%
Wind Icon25km/h
Sun. 5, Oct.
partly cloudyPartly Cloudy
Temperature Icon17°/10°
Humidity Icon86%
Wind Icon29km/h
Mon. 6, Oct.
sunnySunny
Temperature Icon19°/10°
Humidity Icon81%
Wind Icon22km/h
Tue. 7, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon18°/9°
Humidity Icon89%
Wind Icon24km/h
Wed. 8, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon18°/12°
Humidity Icon93%
Wind Icon18km/h
Thu. 9, Oct.
cloudyCloudy
Temperature Icon19°/10°
Humidity Icon79%
Wind Icon14km/h
Fri. 10, Oct.
heavy rain at timesHeavy rain at times
Temperature Icon16°/7°
Humidity Icon82%
Wind Icon21km/h
Sat. 11, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/8°
Humidity Icon84%
Wind Icon22km/h
Sun. 12, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/8°
Humidity Icon84%
Wind Icon22km/h
Mon. 13, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/8°
Humidity Icon84%
Wind Icon21km/h
Tue. 14, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/7°
Humidity Icon83%
Wind Icon21km/h
Wed. 15, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/8°
Humidity Icon82%
Wind Icon22km/h
Thu. 16, Oct.
moderate rain at timesModerate rain at times
Temperature Icon17°/7°
Humidity Icon80%
Wind Icon22km/h
Fri. 17, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/8°
Humidity Icon84%
Wind Icon22km/h
Sat. 18, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/9°
Humidity Icon85%
Wind Icon21km/h
Sun. 19, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon17°/8°
Humidity Icon80%
Wind Icon21km/h
Mon. 20, Oct.
moderate rain at timesModerate rain at times
Temperature Icon18°/8°
Humidity Icon83%
Wind Icon20km/h
Tue. 21, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon18°/8°
Humidity Icon82%
Wind Icon22km/h
Wed. 22, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon18°/8°
Humidity Icon83%
Wind Icon19km/h
Thu. 23, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon18°/8°
Humidity Icon82%
Wind Icon18km/h
Fri. 24, Oct.
heavy rain at timesHeavy rain at times
Temperature Icon18°/8°
Humidity Icon82%
Wind Icon19km/h
Sat. 25, Oct.
heavy rain at timesHeavy rain at times
Temperature Icon18°/8°
Humidity Icon82%
Wind Icon19km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSun. 28, Sep.

19.7°C

Low will be onWed. 1, Oct.

5.2°C

HumidityHumidity

High will be onSat. 4, Oct.

93%

Low will be onWed. 1, Oct.

76%

Wind SpeedWind Speed

High will be onMon. 29, Sep.

29.5km/h

Low will be onThu. 2, Oct.

14km/h

PrecipitationPrecipitation

High will be onFri. 26, Sep.

12.8mm

Low will be onMon. 6, Oct.

0.01mm

Ultraviolet IndexUV

High will be onFri. 3, Oct.

5

Low will be onWed. 1, Oct.

4

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