Firminy in Summer
In summer (June, July and August), Firminy sees average daytime highs around 24°C and overnight lows near 13°C, with 203 mm of rain over about 31 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Over the season highs climb from about 21°C in early June to 23°C by late August. The sky is clear or mostly clear about 33% of the time across summer, and the air most often feels dry.
Summer is Firminy's best season of the year to visit on our travel score. For the whole year in context, see Firminy's year-round climate.
- Avg daytime high
- 24°C
- warmest season of the year
- Avg overnight low
- 13°C
- Rainfall
- 203 mm
- 31 wet days
- Avg wind
- 8 km/h
- Travel score
- 6.9
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Firminy in Summer
Over the season highs climb from about 21°C in early June to 23°C by late August.
A typical summer day in Firminy reaches about 24°C and drops to 13°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Firminy
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Firminy weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 6° / -0° | 58 | 11.6 | 4.8 | 8.9 | 0.3 |
| Feb | 7° / -0° | 46 | 10.2 | 4.8 | 10.1 | 0.9 |
| Mar | 11° / 2° | 49 | 10.4 | 2.3 | 11.6 | 2.8 |
| Apr | 14° / 5° | 76 | 12.6 | 1.3 | 13.2 | 4.0 |
| May | 18° / 8° | 87 | 13.1 | 0.3 | 14.7 | 5.4 |
| Jun | 22° / 12° | 75 | 11.7 | 0 | 15.4 | 6.4 |
| Jul | 25° / 14° | 63 | 9.7 | 0 | 15.1 | 7.1 |
| Aug | 25° / 13° | 65 | 9.2 | 0 | 13.9 | 7.2 |
| Sep | 20° / 10° | 77 | 9.3 | 0 | 12.3 | 6.4 |
| Oct | 15° / 7° | 84 | 11.1 | 0.4 | 10.7 | 4.5 |
| Nov | 10° / 3° | 85 | 12.2 | 2.2 | 9.3 | 1.9 |
| Dec | 6° / 1° | 59 | 11.1 | 3.6 | 8.6 | 0.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 33% of the time across summer.
Chance of precipitation in Summer
Firminy gets around 203 mm of rain over 31 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 8 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 15 h 12 min in early June to 13 h 12 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.9 kWh/m².
Is summer a good time to visit Firminy?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Firminy for sightseeing.
What to pack for Firminy in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Firminy sees daytime highs around 24°C and nights near 13°C. Pack sun protection. Worth having: light clothes and rain gear. About 31 days see rain.
UV index in Firminy in Summer
Clear-sky midday UV across summer averages around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Firminy peaks around July 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 5 | 7 | 7 | 9 | 7 | 5 | 4 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | High | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | High |
| May | 7 | High |
| Jun | 7 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | High |
| Sep | 5 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Firminy in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Firminy is worst in March — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 14 | 14 | 16 | 16 | 14 | 15 | 11 | 11 | 11 | 12 | 12 | 12 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 14 | Moderate |
| Mar | 16 | Moderate |
| Apr | 16 | Moderate |
| May | 14 | Moderate |
| Jun | 15 | Moderate |
| Jul | 11 | Good |
| Aug | 11 | Good |
| Sep | 11 | Good |
| Oct | 12 | Good |
| Nov | 12 | Good |
| Dec | 12 | Moderate |
Where is Firminy?
Firminy sits at 45.4°N, 4.3°E, 477 m above sea level, in France. The nearest listed city is Saint-Étienne, 9.0 km away.
Topography around Firminy
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Firminy.
Within 3 km, the terrain around Firminy has significant variations in elevation — a maximum elevation change of 403 m around an average of 545 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 890 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,641 m.
The land around Firminy is covered by trees (46%), artificial surfaces (26%) and grassland (25%) within 3 km, trees (49%) and grassland (34%) within 16 km, and trees (48%) and grassland (34%) within 80 km.
France travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 230 V · 50 Hz
- Prices
- ≈ 77% of US
- price level, 2025
- GDP per capita
- $48,986
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.3
- per 100k, 2023
- Road deaths
- 5.1
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 539
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Firminy (45.3896°, 4.2886°, elevation 477 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.