Aosta weather in October

In October, Aosta sees average daytime highs of 7°C and overnight lows near -1°C, with 98 mm of precipitation across 12.4 wet days and about 10.7 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 9°C in the first days to 4°C by the end. The sky is clear or mostly clear about 29% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of October to 9 h 54 min by month's end. Set against the rest of the year, October is Aosta's 10th-clearest and 10th-windiest month. For the whole year in context, see Aosta's year-round climate.

Daytime high: 7°; 6th warmest
Overnight low: -1°; 7th coldest
Precipitation: 98 mm; 12.4 wet days
Daylight: 10 h 42 min; 6:55 AM – 5:36 PM
Cloud cover: 61%; 10th clearest
Wind: 4 km/h; 10th windiest
Solar energy: 2.9 kWh/m²
Travel score: 0.7; out of 10

Air quality: Moderate; PM2.5 10.5 µg/m³ · 2019

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

← September Aosta year-round climate November →Best places to visit in October

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 9°C in the first days to 4°C by the end.

A typical October day in Aosta reaches about 7°C in the afternoon and slips back to -1°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 1°C and 12°C. Set against its neighbours, October runs about 5°C cooler than September and about 7°C warmer than November.

	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)	9	9	9	9	9	8	8	8	8	8	7	7	7	7	7	7	6	6	6	6	6	6	5	5	5	5	5	4	4	4	4
Avg low (°C)	1	1	1	1	0	0	0	0	0	0	0	-1	-1	-1	-1	-1	-2	-2	-2	-2	-2	-2	-3	-3	-3	-3	-3	-3	-3	-4	-4

	Avg high (°C)	Avg low (°C)
1	9	1
2	9	1
3	9	1
4	9	1
5	9	0
6	8	0
7	8	0
8	8	0
9	8	0
10	8	0
11	7	0
12	7	-1
13	7	-1
14	7	-1
15	7	-1
16	7	-1
17	6	-2
18	6	-2
19	6	-2
20	6	-2
21	6	-2
22	6	-2
23	5	-3
24	5	-3
25	5	-3
26	5	-3
27	5	-3
28	4	-3
29	4	-3
30	4	-4
31	4	-4

How October really feels in Aosta

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 24 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

The story in October is cold — wind chill drags the overnight "feels like" below the raw low.

Aosta weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 6th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	-6° / -12°	100	11.9	12.8	8.9	0.0
Feb	-4° / -12°	79	10.9	12	10.1	0.0
Mar	0° / -8°	88	12	13.2	11.6	0.0
Apr	3° / -4°	97	13	13.3	13.3	0.0
May	8° / 0°	112	16.3	8.2	14.7	1.1
Jun	13° / 4°	105	16.7	2.3	15.4	3.3
Jul	16° / 7°	95	15.7	0.8	15.1	4.6
Aug	16° / 6°	87	13.9	0.7	13.9	4.6
Sep	12° / 3°	89	12.7	2.9	12.3	2.9
Oct	7° / -1°	98	12.4	7.9	10.7	0.7
Nov	-0° / -7°	124	13.3	13.6	9.3	0.0
Dec	-5° / -11°	110	12.7	13.6	8.5	0.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 12% of October, with mostly cloudy or overcast conditions the remaining 58%.

	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 (%)	41	41	40	40	40	40	40	40	40	39	39	40	40	40	40	41	42	43	43	43	44	44	44	44	44	44	44	44	44	45	44
Cloudier (%)	59	59	60	60	60	60	60	60	60	61	61	60	60	60	60	59	58	57	57	57	56	56	56	56	56	56	56	56	56	55	56

	Clearer (%)	Cloudier (%)
1	41	59
2	41	59
3	40	60
4	40	60
5	40	60
6	40	60
7	40	60
8	40	60
9	40	60
10	39	61
11	39	61
12	40	60
13	40	60
14	40	60
15	40	60
16	41	59
17	42	58
18	43	57
19	43	57
20	43	57
21	44	56
22	44	56
23	44	56
24	44	56
25	44	56
26	44	56
27	44	56
28	44	56
29	44	56
30	45	55
31	44	56

Chance of precipitation in October

Any precipitationSnow

Aosta gets around 98 mm of rain and snow over 12.4 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 40% and peaks near 44% on the wettest days, and about 8 days bring snow.

	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 (%)	44	44	44	44	44	43	43	43	42	42	41	41	40	39	39	38	38	37	37	37	37	37	37	38	38	39	40	40	41	42	43
Snow chance (%)	18	19	19	20	20	21	21	21	22	22	23	23	23	24	24	24	25	25	26	26	27	28	29	30	31	32	33	34	35	36	38

	Rain chance (%)	Snow chance (%)
1	44	18
2	44	19
3	44	19
4	44	20
5	44	20
6	43	21
7	43	21
8	43	21
9	42	22
10	42	22
11	41	23
12	41	23
13	40	23
14	39	24
15	39	24
16	38	24
17	38	25
18	37	25
19	37	26
20	37	26
21	37	27
22	37	28
23	37	29
24	38	30
25	38	31
26	39	32
27	40	33
28	40	34
29	41	35
30	42	36
31	43	38

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 100% 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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

Wind in October

Winds average 4 km/h in October.

Across October, daily wind ranges from about 4 km/h on the calmest days to 4 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)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4
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	4	calm
2	4	calm
3	4	calm
4	4	calm
5	4	calm
6	4	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	4	calm
17	4	calm
18	4	calm
19	4	calm
20	4	calm
21	4	calm
22	4	calm
23	4	calm
24	4	calm
25	4	calm
26	4	calm
27	4	calm
28	4	calm
29	4	calm
30	4	calm
31	4	calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 30 min at the start of October to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 96 minutes over October. Sunrise moves from 6:35 AM to 7:17 AM, and sunset from 6:04 PM to 5:12 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)	11.5	11.4	11.4	11.3	11.3	11.2	11.2	11.1	11.1	11.0	10.9	10.9	10.8	10.8	10.7	10.7	10.6	10.6	10.5	10.5	10.4	10.4	10.3	10.3	10.2	10.2	10.1	10.1	10.0	10.0	9.9
Sunrise (AM)	6:35	6:36	6:38	6:39	6:40	6:42	6:43	6:44	6:46	6:47	6:48	6:50	6:51	6:53	6:54	6:55	6:57	6:58	7:00	7:01	7:02	7:04	7:05	7:07	7:08	7:09	7:11	7:12	7:14	7:15	7:17
Sunset (PM)	6:04	6:02	6:01	5:59	5:57	5:55	5:53	5:51	5:49	5:47	5:45	5:43	5:42	5:40	5:38	5:36	5:34	5:33	5:31	5:29	5:28	5:26	5:24	5:23	5:21	5:19	5:18	5:16	5:15	5:13	5:12

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.5	6:35	6:04
2	11.4	6:36	6:02
3	11.4	6:38	6:01
4	11.3	6:39	5:59
5	11.3	6:40	5:57
6	11.2	6:42	5:55
7	11.2	6:43	5:53
8	11.1	6:44	5:51
9	11.1	6:46	5:49
10	11.0	6:47	5:47
11	10.9	6:48	5:45
12	10.9	6:50	5:43
13	10.8	6:51	5:42
14	10.8	6:53	5:40
15	10.7	6:54	5:38
16	10.7	6:55	5:36
17	10.6	6:57	5:34
18	10.6	6:58	5:33
19	10.5	7:00	5:31
20	10.5	7:01	5:29
21	10.4	7:02	5:28
22	10.4	7:04	5:26
23	10.3	7:05	5:24
24	10.3	7:07	5:23
25	10.2	7:08	5:21
26	10.2	7:09	5:19
27	10.1	7:11	5:18
28	10.1	7:12	5:16
29	10.0	7:14	5:15
30	10.0	7:15	5:13
31	9.9	7:17	5:12

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.9 kWh/m².

For context, solar energy here swings from a low near 1.55 kWh/m² to a high of 6.01 kWh/m² in June across the year — October's 2.9 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)	3.4	3.4	3.3	3.3	3.2	3.2	3.2	3.1	3.1	3.1	3.0	3.0	3.0	3.0	2.9	2.9	2.9	2.9	2.8	2.8	2.8	2.7	2.7	2.7	2.6	2.6	2.5	2.5	2.5	2.4	2.4
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.4	Moderate
2	3.4	Moderate
3	3.3	Moderate
4	3.3	Moderate
5	3.2	Moderate
6	3.2	Moderate
7	3.2	Moderate
8	3.1	Moderate
9	3.1	Moderate
10	3.1	Moderate
11	3.0	Moderate
12	3.0	Moderate
13	3.0	Moderate
14	3.0	Moderate
15	2.9	Moderate
16	2.9	Moderate
17	2.9	Moderate
18	2.9	Moderate
19	2.8	Moderate
20	2.8	Moderate
21	2.8	Moderate
22	2.7	Moderate
23	2.7	Moderate
24	2.7	Moderate
25	2.6	Moderate
26	2.6	Moderate
27	2.5	Moderate
28	2.5	Moderate
29	2.5	Moderate
30	2.4	Moderate
31	2.4	Moderate

Planning a trip in October

Is October a good time to visit Aosta?

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

0.7

Sightseeing

6th-best month of the year

—

Beach & pool

never really warm enough

October is a weaker month for outdoor sightseeing in Aosta.

What to pack for Aosta in October

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

In October, Aosta sees daytime highs around 7°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 12 days see rain.

a warm layera heavy coatrain gear

UV index in Aosta in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Aosta peaks around July 15 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	2	3	6	8	9	9	10	8	6	4	2	2
Level	Low	Moderate	High	Very high	Very high	Very high	Very high	Very high	High	Moderate	Moderate	Low

	UV index (midday)	Level
Jan	2	Low
Feb	3	Moderate
Mar	6	High
Apr	8	Very high
May	9	Very high
Jun	9	Very high
Jul	10	Very high
Aug	8	Very high
Sep	6	High
Oct	4	Moderate
Nov	2	Moderate
Dec	2	Low

Location & terrain

Where is Aosta?

Aosta sits at 45.7°N, 7.3°E, 583 m above sea level, in Italy. The nearest listed city is Chamonix, 40 km away.

Topography around Aosta

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

Within 3 km, the terrain around Aosta has large variations in elevation — a maximum elevation change of 983 m around an average of 764 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,150 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,625 m.

The land around Aosta is covered by trees (48%), grassland (27%) and artificial surfaces (23%) within 3 km, trees (48%) and grassland (35%) within 16 km, and trees (42%) and grassland (32%) within 80 km.

3 km

983 m

trees 48%

16 km

3,150 m

trees 48%

80 km

4,625 m

trees 42%

treesgrasslandcroplandartificial surfacesbare terrainsnow and icewatermoss and lichen

← September Aosta year-round climate November →Best places to visit in October

October weather nearby: Chamonix 40 km · Martigny-Ville 45 km · Zermatt 46 km · Ivrea 53 km · Sitten 55 km · Sallanches 58 km · Ciriè 60 km · Biella 61 km

Italy travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / F / L; 230 V · 50 Hz
Prices: ≈ 69% of US; price level, 2025
GDP per capita: $43,309; 2025
Happiness: 6.6 / 10; World Happiness, 2025
Safe drinking water: 97%; of population, 2024
Homicide rate: 0.6; per 100k, 2023
Road deaths: 5.3; per 100k/yr, 2019
Income group: High; World Bank
English: Moderate; EF EPI 513
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 Aosta (45.7376°, 7.3172°, elevation 583 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	9	1
2	9	1
3	9	1
4	9	1
5	9	0
6	8	0
7	8	0
8	8	0
9	8	0
10	8	0
11	7	0
12	7	-1
13	7	-1
14	7	-1
15	7	-1
16	7	-1
17	6	-2
18	6	-2
19	6	-2
20	6	-2
21	6	-2
22	6	-2
23	5	-3
24	5	-3
25	5	-3
26	5	-3
27	5	-3
28	4	-3
29	4	-3
30	4	-4
31	4	-4

	Clearer (%)	Cloudier (%)
1	41	59
2	41	59
3	40	60
4	40	60
5	40	60
6	40	60
7	40	60
8	40	60
9	40	60
10	39	61
11	39	61
12	40	60
13	40	60
14	40	60
15	40	60
16	41	59
17	42	58
18	43	57
19	43	57
20	43	57
21	44	56
22	44	56
23	44	56
24	44	56
25	44	56
26	44	56
27	44	56
28	44	56
29	44	56
30	45	55
31	44	56

	Rain chance (%)	Snow chance (%)
1	44	18
2	44	19
3	44	19
4	44	20
5	44	20
6	43	21
7	43	21
8	43	21
9	42	22
10	42	22
11	41	23
12	41	23
13	40	23
14	39	24
15	39	24
16	38	24
17	38	25
18	37	25
19	37	26
20	37	26
21	37	27
22	37	28
23	37	29
24	38	30
25	38	31
26	39	32
27	40	33
28	40	34
29	41	35
30	42	36
31	43	38

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	9	1
2	9	1
3	9	1
4	9	1
5	9	0
6	8	0
7	8	0
8	8	0
9	8	0
10	8	0
11	7	0
12	7	-1
13	7	-1
14	7	-1
15	7	-1
16	7	-1
17	6	-2
18	6	-2
19	6	-2
20	6	-2
21	6	-2
22	6	-2
23	5	-3
24	5	-3
25	5	-3
26	5	-3
27	5	-3
28	4	-3
29	4	-3
30	4	-4
31	4	-4

	Clearer (%)	Cloudier (%)
1	41	59
2	41	59
3	40	60
4	40	60
5	40	60
6	40	60
7	40	60
8	40	60
9	40	60
10	39	61
11	39	61
12	40	60
13	40	60
14	40	60
15	40	60
16	41	59
17	42	58
18	43	57
19	43	57
20	43	57
21	44	56
22	44	56
23	44	56
24	44	56
25	44	56
26	44	56
27	44	56
28	44	56
29	44	56
30	45	55
31	44	56

	Rain chance (%)	Snow chance (%)
1	44	18
2	44	19
3	44	19
4	44	20
5	44	20
6	43	21
7	43	21
8	43	21
9	42	22
10	42	22
11	41	23
12	41	23
13	40	23
14	39	24
15	39	24
16	38	24
17	38	25
18	37	25
19	37	26
20	37	26
21	37	27
22	37	28
23	37	29
24	38	30
25	38	31
26	39	32
27	40	33
28	40	34
29	41	35
30	42	36
31	43	38

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	9	1
2	9	1
3	9	1
4	9	1
5	9	0
6	8	0
7	8	0
8	8	0
9	8	0
10	8	0
11	7	0
12	7	-1
13	7	-1
14	7	-1
15	7	-1
16	7	-1
17	6	-2
18	6	-2
19	6	-2
20	6	-2
21	6	-2
22	6	-2
23	5	-3
24	5	-3
25	5	-3
26	5	-3
27	5	-3
28	4	-3
29	4	-3
30	4	-4
31	4	-4

	Clearer (%)	Cloudier (%)
1	41	59
2	41	59
3	40	60
4	40	60
5	40	60
6	40	60
7	40	60
8	40	60
9	40	60
10	39	61
11	39	61
12	40	60
13	40	60
14	40	60
15	40	60
16	41	59
17	42	58
18	43	57
19	43	57
20	43	57
21	44	56
22	44	56
23	44	56
24	44	56
25	44	56
26	44	56
27	44	56
28	44	56
29	44	56
30	45	55
31	44	56

	Rain chance (%)	Snow chance (%)
1	44	18
2	44	19
3	44	19
4	44	20
5	44	20
6	43	21
7	43	21
8	43	21
9	42	22
10	42	22
11	41	23
12	41	23
13	40	23
14	39	24
15	39	24
16	38	24
17	38	25
18	37	25
19	37	26
20	37	26
21	37	27
22	37	28
23	37	29
24	38	30
25	38	31
26	39	32
27	40	33
28	40	34
29	41	35
30	42	36
31	43	38

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100