Saint Ouen, Saint Helier, Jersey Climate Change Severity

43
High
The current climate change severity in Saint Ouen is High, with a -11.4% 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 Jul. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100


Saint Ouen Weather Condition Changes (Historic Vs 2025)

0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2025

Over the past 15 year(s), Saint Ouen temperature has changed by around +2.8%, 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
3136
16.1%

cloudyCloudy
5024
-52%

rainyRainy
10798
-8.4%

snowySnowy
00
0%

mistyMisty
01
100%

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

Climate Change Indicators:

Over the past 15 years, Saint Ouen has experienced measurable shifts in key climate parameters, contributing to the current severity score of 43 (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

43/100


High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Saint Ouen experienced significant changes:

Temperature change of

+0.3 °C


Variation in annual rainfall

-6.5 %


Change in average humidity

+0.8 %


PM2.5 levels surged by

+31.7 %


Heatwave changed by

+0.6 day(s)


Coldwave changed by

-5 day(s)


Wind speeds changed by

-2.5 km/h


These indicators show improvement in key parametes of climate, but Saint Ouen 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.

Saint Ouen Weather Forecast 30 Days (August - September 2025)
Saint Ouen, Saint Helier, Jersey


Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Thu. 7, Aug.
partly cloudyPartly Cloudy

Temperature Icon19°/17°

Humidity Icon77%

Wind Icon25km/h
Fri. 8, Aug.
partly cloudyPartly Cloudy

Temperature Icon18°/18°

Humidity Icon76%

Wind Icon20km/h
Sat. 9, Aug.
partly cloudyPartly Cloudy

Temperature Icon19°/17°

Humidity Icon76%

Wind Icon27km/h
Sun. 10, Aug.
sunnySunny

Temperature Icon18°/17°

Humidity Icon79%

Wind Icon29km/h
Mon. 11, Aug.
sunnySunny

Temperature Icon21°/18°

Humidity Icon73%

Wind Icon35km/h
Tue. 12, Aug.
patchy rain possiblePatchy rain nearby

Temperature Icon23°/19°

Humidity Icon72%

Wind Icon37km/h
Wed. 13, Aug.
patchy rain possiblePatchy rain nearby

Temperature Icon24°/20°

Humidity Icon78%

Wind Icon29km/h
Thu. 14, Aug.
sunnySunny

Temperature Icon23°/19°

Humidity Icon81%

Wind Icon23km/h
Fri. 15, Aug.
sunnySunny

Temperature Icon21°/19°

Humidity Icon82%

Wind Icon27km/h
Sat. 16, Aug.
patchy rain possiblePatchy rain nearby

Temperature Icon21°/18°

Humidity Icon80%

Wind Icon34km/h
Sun. 17, Aug.
patchy rain possiblePatchy rain nearby

Temperature Icon18°/18°

Humidity Icon87%

Wind Icon30km/h
Mon. 18, Aug.
patchy rain possiblePatchy rain nearby

Temperature Icon18°/16°

Humidity Icon86%

Wind Icon23km/h
Tue. 19, Aug.
patchy rain possiblePatchy rain nearby

Temperature Icon18°/16°

Humidity Icon85%

Wind Icon17km/h
Wed. 20, Aug.
partly cloudyPartly Cloudy

Temperature Icon18°/18°

Humidity Icon84%

Wind Icon21km/h
Thu. 21, Aug.
patchy rain possiblePatchy rain possible

Temperature Icon18°/16°

Humidity Icon81%

Wind Icon26km/h
Fri. 22, Aug.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon19°/16°

Humidity Icon82%

Wind Icon26km/h
Sat. 23, Aug.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon19°/16°

Humidity Icon80%

Wind Icon28km/h
Sun. 24, Aug.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon18°/16°

Humidity Icon79%

Wind Icon31km/h
Mon. 25, Aug.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon18°/16°

Humidity Icon81%

Wind Icon35km/h
Tue. 26, Aug.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon18°/16°

Humidity Icon81%

Wind Icon34km/h
Wed. 27, Aug.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon18°/16°

Humidity Icon81%

Wind Icon31km/h
Thu. 28, Aug.
heavy rain at timesHeavy rain at times

Temperature Icon18°/16°

Humidity Icon78%

Wind Icon28km/h
Fri. 29, Aug.
moderate rain at timesModerate rain at times

Temperature Icon17°/15°

Humidity Icon77%

Wind Icon31km/h
Sat. 30, Aug.
moderate rain at timesModerate rain at times

Temperature Icon17°/15°

Humidity Icon77%

Wind Icon29km/h
Sun. 31, Aug.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon18°/15°

Humidity Icon78%

Wind Icon30km/h
Mon. 1, Sep.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon18°/16°

Humidity Icon78%

Wind Icon28km/h
Tue. 2, Sep.
moderate rain at timesModerate rain at times

Temperature Icon18°/16°

Humidity Icon79%

Wind Icon26km/h
Wed. 3, Sep.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon19°/16°

Humidity Icon82%

Wind Icon30km/h
Thu. 4, Sep.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon19°/16°

Humidity Icon81%

Wind Icon31km/h
Fri. 5, Sep.
moderate rain at timesModerate rain at times

Temperature Icon19°/16°

Humidity Icon80%

Wind Icon31km/h
Sat. 6, Sep.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon18°/16°

Humidity Icon79%

Wind Icon30km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onWed. 13, Aug.

24.2°C


Low will be onSat. 30, Aug.

15.1°C

HumidityHumidity

High will be onSun. 17, Aug.

87%


Low will be onTue. 12, Aug.

72%

Wind SpeedWind Speed

High will be onTue. 12, Aug.

37.4km/h


Low will be onTue. 19, Aug.

17.3km/h

PrecipitationPrecipitation

High will be onMon. 25, Aug.

6.5mm


Low will be onFri. 8, Aug.

0.06mm

Ultraviolet IndexUV

High will be onThu. 14, Aug.

6


Low will be onFri. 8, Aug.

1.6