Firminy weather in August

In August, Firminy sees average daytime highs of 25°C and overnight lows near 13°C, with 65 mm of rain across 9.2 wet days and about 13.9 hours of daylight. It is the 2nd-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 23°C by the end. The sky is clear or mostly clear about 37% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 36 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Firminy's 2nd-clearest and 12th-windiest month. For the whole year in context, see Firminy's year-round climate.

Daytime high
25°
2nd warmest
Overnight low
13°
11th coldest
Rainfall
65 mm
9.2 wet days
Daylight
13 h 54 min
5:49 AM – 7:45 PM
Cloud cover
51%
2nd clearest
Wind
8 km/h
12th windiest
Solar energy
5.38 kWh/m²
Travel score
7.2
out of 10
Air quality
Good
PM10 24.4 µg/m³ · 2010

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 26°C in the first days to 23°C by the end.

A typical August day in Firminy reaches about 25°C in the afternoon and slips back to 13°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 31°C. Set against its neighbours, August runs on par with July and about 5°C warmer than September.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12614
22614
32614
42614
52614
62614
72514
82514
92514
102514
112514
122514
132514
142514
152514
162514
172514
182513
192513
202513
212513
222513
232413
242413
252413
262413
272413
282412
292312
302312
312312

How August really feels in Firminy

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August 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 August compares with the rest of the year at a glance. August is the 2nd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -0°5811.64.88.90.3
Feb / -0°4610.24.810.10.9
Mar11° / 4910.42.311.62.8
Apr14° / 7612.61.313.24.0
May18° / 8713.10.314.75.4
Jun22° / 12°7511.7015.46.4
Jul25° / 14°639.7015.17.1
Aug25° / 13°659.2013.97.2
Sep20° / 10°779.3012.36.4
Oct15° / 8411.10.410.74.5
Nov10° / 8512.22.29.31.9
Dec / 5911.13.68.60.6

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55644
65644
75644
85743
95743
105743
115842
125842
135842
145842
155941
165941
175941
185941
195941
205941
215842
225842
235644
245644
255545
265446
275347
285347
295347
305248
315248

Chance of precipitation in August

Any precipitation

Firminy gets around 65 mm of rain over 9.2 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 29% and peaks near 34% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
133
233
334
434
534
634
733
833
933
1032
1131
1231
1330
1429
1528
1628
1727
1826
1926
2026
2126
2226
2326
2426
2526
2625
2725
2825
2925
3025
3125

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the dry band about 55% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1473914
2473914
3473914
4483814
5483813
6493813
7503813
8513712
9513712
10523711
11523711
12543610
13543610
1455369
1555369
1656368
1756368
1856368
1956368
2057358
2157358
2257358
2358348
2458348
2560337
2661327
2762317
2863307
2964297
3066286
3167276

Wind in August

Winds average 8 km/h in August, the calmest month.

Across August, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 36 min at the start of August to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over August. Sunrise moves from 5:31 AM to 6:08 AM, and sunset from 8:07 PM to 7:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.65:318:07
214.65:328:06
314.55:338:04
414.55:348:03
514.45:368:02
614.45:378:00
714.35:387:59
814.35:397:57
914.35:407:56
1014.25:427:54
1114.25:437:53
1214.15:447:51
1314.15:457:50
1414.05:477:48
1514.05:487:47
1613.95:497:45
1713.95:507:43
1813.85:517:42
1913.85:537:40
2013.75:547:38
2113.75:557:36
2213.65:567:35
2313.65:587:33
2413.55:597:31
2513.56:007:29
2613.46:017:27
2713.46:037:26
2813.36:047:24
2913.36:057:22
3013.26:067:20
3113.26:087:18

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.38 kWh/m².

For context, solar energy here swings from a low near 1.14 kWh/m² to a high of 6.15 kWh/m² in July across the year — August's 5.38 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.8Bright
35.8Bright
45.8Bright
55.7Bright
65.7Bright
75.7Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.4Bright
175.4Bright
185.4Bright
195.3Bright
205.3Bright
215.3Bright
225.2Bright
235.2Bright
245.1Bright
255.1Bright
265.0Bright
275.0Bright
284.9Bright
294.9Bright
304.8Bright
314.8Bright
Planning a trip in August

Is August a good time to visit Firminy?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.2
Sightseeing
1st-best month of the year
6.3
Beach & pool
2nd-best month of the year

August is one of the better times to visit Firminy for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Firminy in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Firminy sees daytime highs around 25°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Firminy in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 16UV 9Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5High
May7High
Jun7Very high
Jul9Very high
Aug7High
Sep5High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Firminy in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August 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).

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 2216 µg/m³Jul 2311 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar16Moderate
Apr16Moderate
May14Moderate
Jun15Moderate
Jul11Good
Aug11Good
Sep11Good
Oct12Good
Nov12Good
Dec12Moderate
Location & terrain

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.

3 km
403 m
16 km
890 m
80 km
1,641 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Saint-Étienne 9.0 km · Saint-Chamond 20 km · Montbrison 30 km · Annonay 34 km · Givors 44 km · Vienne 48 km · Le Puy-en-Velay 50 km · Saint-Genis-Laval 52 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
Roman Catholic 47%none 33%Muslim 4%Protestant 2%

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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).