Grenoble weather in August

In August, Grenoble sees average daytime highs of 22°C and overnight lows near 12°C, with 107 mm of rain across 12 wet days and about 13.9 hours of daylight. It is the 2nd-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 21°C by the end. The sky is clear or mostly clear about 41% 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 Grenoble's 2nd-clearest and 6th-windiest month. For the whole year in context, see Grenoble's year-round climate.

Daytime high: 22°; 2nd warmest
Overnight low: 12°; 11th coldest
Rainfall: 107 mm; 12 wet days
Daylight: 13 h 54 min; 5:44 AM – 7:39 PM
Cloud cover: 49%; 2nd clearest
Wind: 5 km/h; 6th windiest
Solar energy: 5.47 kWh/m²
Travel score: 6.7; out of 10

Grenoble is commune in Isère, France.

Air quality: Moderate; PM2.5 10.9 µg/m³ · 2019
Density: 8,745/km²; people per km²

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

← July Grenoble year-round climate September →Best places to visit in August

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 23°C in the first days to 21°C by the end.

A typical August day in Grenoble reaches about 22°C in the afternoon and slips back to 12°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 28°C. Set against its neighbours, August runs on par with July and about 4°C warmer than September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	22	22	22	22	22	22	22	22	22	21	21	21	21	21
Avg low (°C)	13	13	13	13	13	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	11	11	11	11	11	11	11	11	10	10

	Avg high (°C)	Avg low (°C)
1	23	13
2	23	13
3	23	13
4	23	13
5	23	13
6	23	12
7	23	12
8	23	12
9	23	12
10	23	12
11	23	12
12	23	12
13	23	12
14	23	12
15	23	12
16	23	12
17	23	12
18	22	12
19	22	12
20	22	12
21	22	12
22	22	11
23	22	11
24	22	11
25	22	11
26	22	11
27	21	11
28	21	11
29	21	11
30	21	10
31	21	10

How August really feels in Grenoble

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

heat index over the day's high

Days feeling ≤ 0°C

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.

Grenoble weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 11th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	3° / -4°	119	13.1	10.8	9	0.0
Feb	5° / -4°	102	11.1	9.2	10.1	0.1
Mar	9° / -0°	109	12.9	8.3	11.6	1.7
Apr	12° / 3°	120	14.3	6.6	13.2	2.8
May	16° / 7°	147	16.8	2.2	14.6	4.3
Jun	20° / 10°	127	15.3	0.1	15.4	5.6
Jul	23° / 12°	113	12.8	0.1	15.1	6.6
Aug	22° / 12°	107	12	0	13.9	6.7
Sep	18° / 8°	111	11.7	0.4	12.3	5.6
Oct	14° / 5°	118	12.7	2.5	10.7	3.7
Nov	8° / -0°	141	13.5	7.5	9.3	1.0
Dec	4° / -3°	133	13.4	10.5	8.6	0.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 21% of August, with mostly cloudy or overcast conditions the remaining 38%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	64	65	64	64	64	63	62	62	62	62	62	62	62	62	62	62	63	64	64	64	64	62	62	62	62	61	60	60	60	60	59
Cloudier (%)	36	35	36	36	36	37	38	38	38	38	38	38	38	38	38	38	37	36	36	36	36	38	38	38	38	39	40	40	40	40	41

	Clearer (%)	Cloudier (%)
1	64	36
2	65	35
3	64	36
4	64	36
5	64	36
6	63	37
7	62	38
8	62	38
9	62	38
10	62	38
11	62	38
12	62	38
13	62	38
14	62	38
15	62	38
16	62	38
17	63	37
18	64	36
19	64	36
20	64	36
21	64	36
22	62	38
23	62	38
24	62	38
25	62	38
26	61	39
27	60	40
28	60	40
29	60	40
30	60	40
31	59	41

Chance of precipitation in August

Any precipitation

Grenoble gets around 107 mm of rain over 12 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 38% and peaks near 42% on the wettest days. The odds ease toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	41	41	42	42	42	42	42	42	41	41	40	40	39	38	38	37	36	36	36	36	35	35	35	35	35	35	35	35	35	35	35

	Rain chance (%)
1	41
2	41
3	42
4	42
5	42
6	42
7	42
8	42
9	41
10	41
11	40
12	40
13	39
14	38
15	38
16	37
17	36
18	36
19	36
20	36
21	35
22	35
23	35
24	35
25	35
26	35
27	35
28	35
29	35
30	35
31	35

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 58% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	44	44	44	45	45	46	47	49	50	51	52	54	55	57	58	58	60	61	61	62	63	63	64	65	65	67	68	69	71	73	74
Comfortable (%)	50	50	50	49	49	48	47	46	45	44	43	42	41	40	39	39	38	37	37	37	36	36	35	34	34	32	31	30	28	26	25
Humid (%)	6	6	6	6	6	6	6	5	5	5	5	4	4	3	3	3	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)	Humid (%)
1	44	50	6
2	44	50	6
3	44	50	6
4	45	49	6
5	45	49	6
6	46	48	6
7	47	47	6
8	49	46	5
9	50	45	5
10	51	44	5
11	52	43	5
12	54	42	4
13	55	41	4
14	57	40	3
15	58	39	3
16	58	39	3
17	60	38	2
18	61	37	2
19	61	37	2
20	62	37	1
21	63	36	1
22	63	36	1
23	64	35	1
24	65	34	1
25	65	34	1
26	67	32	1
27	68	31	1
28	69	30	1
29	71	28	1
30	73	26	1
31	74	25	1

Wind in August

Winds average 5 km/h in August.

Across August, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	5	calm
2	5	calm
3	5	calm
4	5	calm
5	5	calm
6	5	calm
7	5	calm
8	5	calm
9	5	calm
10	5	calm
11	5	calm
12	5	calm
13	5	calm
14	5	calm
15	5	calm
16	5	calm
17	5	calm
18	5	calm
19	5	calm
20	5	calm
21	5	calm
22	5	calm
23	5	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm
31	5	calm

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 5:26 AM to 6:02 AM, and sunset from 8:01 PM to 7:12 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	14.6	14.5	14.5	14.5	14.4	14.4	14.3	14.3	14.2	14.2	14.2	14.1	14.1	14.0	14.0	13.9	13.9	13.8	13.8	13.7	13.7	13.6	13.6	13.5	13.5	13.4	13.4	13.3	13.3	13.2	13.2
Sunrise (AM)	5:26	5:27	5:28	5:29	5:30	5:32	5:33	5:34	5:35	5:36	5:38	5:39	5:40	5:41	5:43	5:44	5:45	5:46	5:47	5:49	5:50	5:51	5:52	5:54	5:55	5:56	5:57	5:59	6:00	6:01	6:02
Sunset (PM)	8:01	7:59	7:58	7:57	7:55	7:54	7:53	7:51	7:50	7:48	7:47	7:45	7:44	7:42	7:40	7:39	7:37	7:35	7:34	7:32	7:30	7:29	7:27	7:25	7:23	7:21	7:20	7:18	7:16	7:14	7:12

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	14.6	5:26	8:01
2	14.5	5:27	7:59
3	14.5	5:28	7:58
4	14.5	5:29	7:57
5	14.4	5:30	7:55
6	14.4	5:32	7:54
7	14.3	5:33	7:53
8	14.3	5:34	7:51
9	14.2	5:35	7:50
10	14.2	5:36	7:48
11	14.2	5:38	7:47
12	14.1	5:39	7:45
13	14.1	5:40	7:44
14	14.0	5:41	7:42
15	14.0	5:43	7:40
16	13.9	5:44	7:39
17	13.9	5:45	7:37
18	13.8	5:46	7:35
19	13.8	5:47	7:34
20	13.7	5:49	7:32
21	13.7	5:50	7:30
22	13.6	5:51	7:29
23	13.6	5:52	7:27
24	13.5	5:54	7:25
25	13.5	5:55	7:23
26	13.4	5:56	7:21
27	13.4	5:57	7:20
28	13.3	5:59	7:18
29	13.3	6:00	7:16
30	13.2	6:01	7:14
31	13.2	6:02	7:12

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.47 kWh/m².

For context, solar energy here swings from a low near 1.29 kWh/m² to a high of 6.25 kWh/m² in July across the year — August's 5.47 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	5.9	5.9	5.9	5.8	5.8	5.8	5.7	5.7	5.7	5.7	5.6	5.6	5.6	5.6	5.5	5.5	5.5	5.5	5.4	5.4	5.4	5.3	5.3	5.2	5.2	5.1	5.0	5.0	4.9	4.9	4.8
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.9	Bright
2	5.9	Bright
3	5.9	Bright
4	5.8	Bright
5	5.8	Bright
6	5.8	Bright
7	5.7	Bright
8	5.7	Bright
9	5.7	Bright
10	5.7	Bright
11	5.6	Bright
12	5.6	Bright
13	5.6	Bright
14	5.6	Bright
15	5.5	Bright
16	5.5	Bright
17	5.5	Bright
18	5.5	Bright
19	5.4	Bright
20	5.4	Bright
21	5.4	Bright
22	5.3	Bright
23	5.3	Bright
24	5.2	Bright
25	5.2	Bright
26	5.1	Bright
27	5.0	Bright
28	5.0	Bright
29	4.9	Bright
30	4.9	Bright
31	4.8	Bright

Planning a trip in August

Is August a good time to visit Grenoble?

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

6.7

Sightseeing

1st-best month of the year

4.7

Beach & pool

2nd-best month of the year

August is a reasonable time to visit Grenoble for sightseeing.

What to pack for Grenoble in August

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

In August, Grenoble sees daytime highs around 22°C and nights near 12°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Grenoble 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 Grenoble peaks around July 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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	3	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	3	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

Location & terrain

Where is Grenoble?

Grenoble sits at 45.2°N, 5.7°E, 218 m above sea level, in France. The nearest listed city is Fontaine, 3.0 km away.

Topography around Grenoble

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Grenoble.

Within 3 km, the terrain around Grenoble has significant variations in elevation — a maximum elevation change of 440 m around an average of 237 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,062 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,888 m.

The land around Grenoble is covered by artificial surfaces (63%) and trees (29%) within 3 km, trees (68%) within 16 km, and trees (53%) and grassland (27%) within 80 km.

3 km

440 m

artificial surfaces 63%

16 km

2,062 m

trees 68%

80 km

3,888 m

trees 53%

treesgrasslandcroplandartificial surfacesbare terrainsnow and icewater

← July Grenoble year-round climate September →Best places to visit in August

August weather nearby: Fontaine 3.0 km · Échirolles 4.0 km · Saint-Martin-d'Hères 4.0 km · Meylan 6.0 km · Saint-Égrève 7.0 km · Voiron 23 km · Chambéry 46 km · Romans-sur-Isère 53 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 Grenoble (45.1787°, 5.7148°, elevation 218 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	23	13
2	23	13
3	23	13
4	23	13
5	23	13
6	23	12
7	23	12
8	23	12
9	23	12
10	23	12
11	23	12
12	23	12
13	23	12
14	23	12
15	23	12
16	23	12
17	23	12
18	22	12
19	22	12
20	22	12
21	22	12
22	22	11
23	22	11
24	22	11
25	22	11
26	22	11
27	21	11
28	21	11
29	21	11
30	21	10
31	21	10

	Clearer (%)	Cloudier (%)
1	64	36
2	65	35
3	64	36
4	64	36
5	64	36
6	63	37
7	62	38
8	62	38
9	62	38
10	62	38
11	62	38
12	62	38
13	62	38
14	62	38
15	62	38
16	62	38
17	63	37
18	64	36
19	64	36
20	64	36
21	64	36
22	62	38
23	62	38
24	62	38
25	62	38
26	61	39
27	60	40
28	60	40
29	60	40
30	60	40
31	59	41

	Rain chance (%)
1	41
2	41
3	42
4	42
5	42
6	42
7	42
8	42
9	41
10	41
11	40
12	40
13	39
14	38
15	38
16	37
17	36
18	36
19	36
20	36
21	35
22	35
23	35
24	35
25	35
26	35
27	35
28	35
29	35
30	35
31	35

	Dry (%)	Comfortable (%)	Humid (%)
1	44	50	6
2	44	50	6
3	44	50	6
4	45	49	6
5	45	49	6
6	46	48	6
7	47	47	6
8	49	46	5
9	50	45	5
10	51	44	5
11	52	43	5
12	54	42	4
13	55	41	4
14	57	40	3
15	58	39	3
16	58	39	3
17	60	38	2
18	61	37	2
19	61	37	2
20	62	37	1
21	63	36	1
22	63	36	1
23	64	35	1
24	65	34	1
25	65	34	1
26	67	32	1
27	68	31	1
28	69	30	1
29	71	28	1
30	73	26	1
31	74	25	1

	Avg high (°C)	Avg low (°C)
1	23	13
2	23	13
3	23	13
4	23	13
5	23	13
6	23	12
7	23	12
8	23	12
9	23	12
10	23	12
11	23	12
12	23	12
13	23	12
14	23	12
15	23	12
16	23	12
17	23	12
18	22	12
19	22	12
20	22	12
21	22	12
22	22	11
23	22	11
24	22	11
25	22	11
26	22	11
27	21	11
28	21	11
29	21	11
30	21	10
31	21	10

	Clearer (%)	Cloudier (%)
1	64	36
2	65	35
3	64	36
4	64	36
5	64	36
6	63	37
7	62	38
8	62	38
9	62	38
10	62	38
11	62	38
12	62	38
13	62	38
14	62	38
15	62	38
16	62	38
17	63	37
18	64	36
19	64	36
20	64	36
21	64	36
22	62	38
23	62	38
24	62	38
25	62	38
26	61	39
27	60	40
28	60	40
29	60	40
30	60	40
31	59	41

	Rain chance (%)
1	41
2	41
3	42
4	42
5	42
6	42
7	42
8	42
9	41
10	41
11	40
12	40
13	39
14	38
15	38
16	37
17	36
18	36
19	36
20	36
21	35
22	35
23	35
24	35
25	35
26	35
27	35
28	35
29	35
30	35
31	35

	Dry (%)	Comfortable (%)	Humid (%)
1	44	50	6
2	44	50	6
3	44	50	6
4	45	49	6
5	45	49	6
6	46	48	6
7	47	47	6
8	49	46	5
9	50	45	5
10	51	44	5
11	52	43	5
12	54	42	4
13	55	41	4
14	57	40	3
15	58	39	3
16	58	39	3
17	60	38	2
18	61	37	2
19	61	37	2
20	62	37	1
21	63	36	1
22	63	36	1
23	64	35	1
24	65	34	1
25	65	34	1
26	67	32	1
27	68	31	1
28	69	30	1
29	71	28	1
30	73	26	1
31	74	25	1

	Avg high (°C)	Avg low (°C)
1	23	13
2	23	13
3	23	13
4	23	13
5	23	13
6	23	12
7	23	12
8	23	12
9	23	12
10	23	12
11	23	12
12	23	12
13	23	12
14	23	12
15	23	12
16	23	12
17	23	12
18	22	12
19	22	12
20	22	12
21	22	12
22	22	11
23	22	11
24	22	11
25	22	11
26	22	11
27	21	11
28	21	11
29	21	11
30	21	10
31	21	10

	Clearer (%)	Cloudier (%)
1	64	36
2	65	35
3	64	36
4	64	36
5	64	36
6	63	37
7	62	38
8	62	38
9	62	38
10	62	38
11	62	38
12	62	38
13	62	38
14	62	38
15	62	38
16	62	38
17	63	37
18	64	36
19	64	36
20	64	36
21	64	36
22	62	38
23	62	38
24	62	38
25	62	38
26	61	39
27	60	40
28	60	40
29	60	40
30	60	40
31	59	41

	Rain chance (%)
1	41
2	41
3	42
4	42
5	42
6	42
7	42
8	42
9	41
10	41
11	40
12	40
13	39
14	38
15	38
16	37
17	36
18	36
19	36
20	36
21	35
22	35
23	35
24	35
25	35
26	35
27	35
28	35
29	35
30	35
31	35

	Dry (%)	Comfortable (%)	Humid (%)
1	44	50	6
2	44	50	6
3	44	50	6
4	45	49	6
5	45	49	6
6	46	48	6
7	47	47	6
8	49	46	5
9	50	45	5
10	51	44	5
11	52	43	5
12	54	42	4
13	55	41	4
14	57	40	3
15	58	39	3
16	58	39	3
17	60	38	2
18	61	37	2
19	61	37	2
20	62	37	1
21	63	36	1
22	63	36	1
23	64	35	1
24	65	34	1
25	65	34	1
26	67	32	1
27	68	31	1
28	69	30	1
29	71	28	1
30	73	26	1
31	74	25	1