Saint Nazaire, Pays de la Loire, France Climate Change Severity

38
Moderate
The current climate change severity in Saint Nazaire is Moderate, with a -15.05% 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
°C

Saint Nazaire 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), Saint Nazaire temperature has changed by around +3.8%, 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
3642
16.6%
cloudyCloudy
5227
-48.07%
rainyRainy
10197
-3.9%
snowySnowy
00
0%
mistyMisty
02
100%

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

Climate Change Indicators:

Over the past 15 years, Saint Nazaire 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, Saint Nazaire experienced significant changes:

Temperature change of

+0.4 °C

Variation in annual rainfall

+22.9 %

Change in average humidity

-2.7 %

PM2.5 levels surged by

-23.8 %

Heatwave changed by

+0.4 day(s)

Coldwave changed by

-4.4 day(s)

Wind speeds changed by

-0.01 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 Jul.

Saint Nazaire Weather Forecast 30 Days (August - September 2025)
Saint Nazaire, Pays de la Loire, France

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Fri. 8, Aug.
sunnySunny
Temperature Icon26°/15°
Humidity Icon65%
Wind Icon20km/h
Sat. 9, Aug.
sunnySunny
Temperature Icon28°/14°
Humidity Icon57%
Wind Icon27km/h
Sun. 10, Aug.
sunnySunny
Temperature Icon32°/13°
Humidity Icon50%
Wind Icon24km/h
Mon. 11, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon36°/19°
Humidity Icon41%
Wind Icon26km/h
Tue. 12, Aug.
sunnySunny
Temperature Icon27°/18°
Humidity Icon74%
Wind Icon19km/h
Wed. 13, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon29°/19°
Humidity Icon63%
Wind Icon17km/h
Thu. 14, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon24°/17°
Humidity Icon77%
Wind Icon26km/h
Fri. 15, Aug.
sunnySunny
Temperature Icon24°/15°
Humidity Icon72%
Wind Icon22km/h
Sat. 16, Aug.
sunnySunny
Temperature Icon29°/15°
Humidity Icon65%
Wind Icon20km/h
Sun. 17, Aug.
sunnySunny
Temperature Icon33°/16°
Humidity Icon48%
Wind Icon23km/h
Mon. 18, Aug.
sunnySunny
Temperature Icon37°/19°
Humidity Icon37%
Wind Icon22km/h
Tue. 19, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon24°/18°
Humidity Icon72%
Wind Icon26km/h
Wed. 20, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon23°/17°
Humidity Icon82%
Wind Icon16km/h
Thu. 21, Aug.
sunnySunny
Temperature Icon26°/17°
Humidity Icon70%
Wind Icon22km/h
Fri. 22, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/16°
Humidity Icon73%
Wind Icon19km/h
Sat. 23, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon24°/15°
Humidity Icon72%
Wind Icon21km/h
Sun. 24, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/15°
Humidity Icon72%
Wind Icon22km/h
Mon. 25, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/16°
Humidity Icon75%
Wind Icon24km/h
Tue. 26, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/15°
Humidity Icon76%
Wind Icon23km/h
Wed. 27, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/15°
Humidity Icon77%
Wind Icon21km/h
Thu. 28, Aug.
moderate rain at timesModerate rain at times
Temperature Icon23°/15°
Humidity Icon72%
Wind Icon21km/h
Fri. 29, Aug.
moderate rain at timesModerate rain at times
Temperature Icon23°/14°
Humidity Icon71%
Wind Icon20km/h
Sat. 30, Aug.
patchy rain possiblePatchy rain possible
Temperature Icon22°/14°
Humidity Icon72%
Wind Icon19km/h
Sun. 31, Aug.
moderate rain at timesModerate rain at times
Temperature Icon22°/14°
Humidity Icon73%
Wind Icon20km/h
Mon. 1, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon22°/14°
Humidity Icon72%
Wind Icon20km/h
Tue. 2, Sep.
moderate rain at timesModerate rain at times
Temperature Icon23°/14°
Humidity Icon71%
Wind Icon19km/h
Wed. 3, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon23°/15°
Humidity Icon73%
Wind Icon19km/h
Thu. 4, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon23°/15°
Humidity Icon74%
Wind Icon19km/h
Fri. 5, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon23°/15°
Humidity Icon74%
Wind Icon18km/h
Sat. 6, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon23°/15°
Humidity Icon72%
Wind Icon20km/h
Sun. 7, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon23°/15°
Humidity Icon69%
Wind Icon19km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onMon. 18, Aug.

36.7°C

Low will be onSun. 10, Aug.

12.7°C

HumidityHumidity

High will be onWed. 20, Aug.

82%

Low will be onMon. 18, Aug.

37%

Wind SpeedWind Speed

High will be onSat. 9, Aug.

27.4km/h

Low will be onWed. 20, Aug.

15.5km/h

PrecipitationPrecipitation

High will be onMon. 25, Aug.

2.7mm

Low will be onWed. 20, Aug.

0.1mm

Ultraviolet IndexUV

High will be onMon. 18, Aug.

7

Low will be onTue. 12, Aug.

1.7

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