AI-generatedAosta at a glance
- Best time
- May, Sep – Oct
- Warmest month
- Jul · 29°
- Sunshine a year
- 2,000 h
- Rain a year
- 1,833 mm
- Climate
- Temperate
- Time zone
- UTC+1 / UTC+2
- Elevation
- 583 m
Climate in Aosta
Aosta has a temperate climate with warm summers and cool winters. July is the warmest month with average highs of 29 °C, while January is the coolest at 5 °C. With around 2,000 hours of sunshine a year, Aosta is moderately sunny; July is the sunniest month with 8.0 hours a day.
Holiday weather through the year
Best time to visit Aosta
The best time to visit Aosta is in May and from September to October. Hiking and mountain trips are best from May to June and from September to October, when the trails are largely free of snow. Rain is frequent from June to July; the wettest month is June with 220 mm.
Aosta through the seasons
How the weather changes over the seasons, with averages for each.
Aosta in spring
Mar – May
Fair
- 11–20 °C by day
- 5.9 h of sun a day
- 47 rainy days in all
Aosta in summer
Jun – Aug
Fair
- 26–29 °C by day
- 7.4 h of sun a day
- 57 rainy days in all
Aosta in autumn
Sep – Nov
Fair
- 10–23 °C by day
- 4.6 h of sun a day
- 42 rainy days in all
Aosta in winter
Dec – Feb
Poor
- 5–7 °C by day
- 4.0 h of sun a day
- 31 rainy days in all
Which month for what?
Hiking & mountain trips
May – Jun, Sep – Oct
13–27 °C in the village, little snow
Rainy months
Jun – Jul
18 or more rainy days, often short showers and storms
Snow
Oct – May
Snow on 2 or more days
Find your perfect month
Tell us what you like and we rate every month in Aosta for you.
Your best months: May, September
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Good
Best time to visit: May, September – October
Good forSightseeing & walks
Keep in mindSnow
A typical day in October
- Morning, 08:00: about 9°
- Midday, 13:00: about 16°
- Afternoon, 16:00: about 17°
- Evening, 20:00: about 13°
- Night, 23:00: about 11°
07:4618:47
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:27–08:26 · evening 18:07–19:06
- Blue hour
- Morning 07:16–07:27 · evening 19:06–19:17
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Aosta compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 20° at the start of the month to 13° at the end. The days get 1.5 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 20° | 13° |
| Night-time low | 10° | 6° |
| Daylight | 11.8 h | 10.3 h |
What is the weather like in Aosta in October?
In October, Aosta is mild: daytime highs average 17 °C, and nights cool down to about 8 °C. Expect around 4.3 hours of sunshine a day. It rains often – on about 15 days, adding up to 166 mm. Snow falls on about 3 days. All in all, October is a good month for a holiday in Aosta.
More details for October
- Daylight
- 11 h 2 min07:46 – 18:47
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 7 km/haverage daily peakAll months
- Cloud cover
- 63 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 3 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2offset from UTC
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %22 %
- Few rainy daysweight 30 %22 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Mountain air”.
What to pack in October
- Sunscreen
- A jumper for the evenings
- Hat, scarf & gloves
- Rain jacket or umbrella
Compare two months in Aosta
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
September has the better holiday weather in Aosta: score 68 against 61. In September, days are 6 °C warmer than in October. September has one rainy day fewer. The sun shines 2 hours longer a day in September.
| Month | October | September |
|---|---|---|
| Holiday weather score | 61 | 68better |
| Daytime high | 17° | 23° |
| Night-time low | 8° | 13° |
| Sunshine | 4.3 h | 6.0 hbetter |
| Rainy days | 15 | 14better |
| Rainfall | 166 mm | 156 mmbetter |
Based on the climate averages 1996–2025.
Aosta month by month
The typical weather for every month at a glance.
19January5° · 3.9 h
In January, Aosta is cold: daytime highs average 5 °C, and nights often drop below freezing (−1 °C). The sun is scarce, with only about 3.9 hours a day. Rain is frequent, with about 11 rainy days and 73 mm in total. Snow falls on about 9 days. All in all, January is not an ideal month for a holiday in Aosta.
Aosta in January29February7° · 4.8 h
In February, Aosta is cold: daytime highs average 7 °C, and nights often drop below freezing (−1 °C). Expect around 4.8 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 74 mm in total. Snow falls on about 8 days. All in all, February is not an ideal month for a holiday in Aosta.
Aosta in February47March11° · 5.8 h
In March, Aosta is cool: daytime highs average 11 °C, and nights cool down to about 2 °C. Expect around 5.8 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 109 mm in total. Snow falls on about 9 days. All in all, March is a so-so month for a holiday in Aosta.
Aosta in March59April15° · 5.8 h
In April, Aosta is cool: daytime highs average 15 °C, and nights cool down to about 7 °C. Expect around 5.8 hours of sunshine a day. It rains often – on about 15 days, adding up to 158 mm. Snow falls on about 7 days. All in all, April is a so-so month for a holiday in Aosta.
Aosta in April60May20° · 6.1 h
In May, Aosta is mild: daytime highs average 20 °C, and nights cool down to about 11 °C. Expect around 6.1 hours of sunshine a day. It rains often – on about 20 days, adding up to 209 mm. Snow falls on about 3 days. All in all, May is a good month for a holiday in Aosta.
Aosta in May59June26° · 7.1 h
In June, Aosta is warm: daytime highs average 26 °C, and nights cool down to about 15 °C. The sun shines for around 7.1 hours a day. It rains often – on about 21 days, adding up to 220 mm. All in all, June is a so-so month for a holiday in Aosta.
Aosta in June40July29° · 8.0 h
In July, Aosta is hot: daytime highs average 29 °C, and nights cool down to about 18 °C. The sun shines for around 8.0 hours a day. It rains often – on about 19 days, adding up to 213 mm. On about 11 days the thermometer climbs to 30 °C or more. All in all, July is a so-so month for a holiday in Aosta.
Aosta in July42August28° · 7.2 h
In August, Aosta is hot: daytime highs average 28 °C, and nights cool down to about 17 °C. The sun shines for around 7.2 hours a day. It rains often – on about 18 days, adding up to 208 mm. On about 9 days the thermometer climbs to 30 °C or more. All in all, August is a so-so month for a holiday in Aosta.
Aosta in August68September23° · 6.0 h
In September, Aosta is warm: daytime highs average 23 °C, and nights cool down to about 13 °C. Expect around 6.0 hours of sunshine a day. It rains often – on about 14 days, adding up to 156 mm. All in all, September is a good month for a holiday in Aosta.
Aosta in September61October17° · 4.3 h
In October, Aosta is mild: daytime highs average 17 °C, and nights cool down to about 8 °C. Expect around 4.3 hours of sunshine a day. It rains often – on about 15 days, adding up to 166 mm. Snow falls on about 3 days. All in all, October is a good month for a holiday in Aosta.
Aosta in October31November10° · 3.4 h
In November, Aosta is cold: daytime highs average 10 °C, and nights cool down to about 3 °C. The sun is scarce, with only about 3.4 hours a day. Rain is frequent, with about 13 rainy days and 164 mm in total. Snow falls on about 9 days. All in all, November is not an ideal month for a holiday in Aosta.
Aosta in November16December6° · 3.3 h
In December, Aosta is cold: daytime highs average 6 °C, and nights cool down to about −1 °C. The sun is scarce, with only about 3.3 hours a day. Rain is frequent, with about 11 rainy days and 84 mm in total. Snow falls on about 9 days. All in all, December is not an ideal month for a holiday in Aosta.
Aosta in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Aosta
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
CoolOctober: nights around 8°. A duvet at night and a jumper for the evening.
The coolest nights are in January (−1°), the warmest in July (18°). Nights are pleasant for sleeping (15 to 20 °C) from June to August. Nights fall below 8 °C on average from November to April, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 19 | 5° | −1° | 3.9 h | 11 | 73 |
| FebruaryFeb | 29 | 7° | −1° | 4.8 h | 10 | 74 |
| MarchMar | 47 | 11° | 2° | 5.8 h | 13 | 109 |
| AprilApr | 59 | 15° | 7° | 5.8 h | 15 | 158 |
| MayMay | 60 | 20° | 11° | 6.1 h | 20 | 209 |
| JuneJun | 59 | 26° | 15° | 7.1 h | 21 | 220 |
| JulyJul | 40 | 29° | 18° | 8.0 h | 19 | 213 |
| AugustAug | 42 | 28° | 17° | 7.2 h | 18 | 208 |
| SeptemberSep | 68 | 23° | 13° | 6.0 h | 14 | 156 |
| OctoberOct | 61 | 17° | 8° | 4.3 h | 15 | 166 |
| NovemberNov | 31 | 10° | 3° | 3.4 h | 13 | 164 |
| DecemberDec | 16 | 6° | −1° | 3.3 h | 11 | 84 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
45.74° N, 7.32° E · 583 m · Europe/Rome
Sunshine hours in Aosta
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 4.3 of 11.0 hours of daylight in Aosta, 39 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Aosta: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Aosta has about 15 rainy days with 166 mm of rain in total.
UV index in Aosta
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 3 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 9).
Minutes until sunburn in October
- Very fair skin
- about 45 min
- Fair skin
- about 55 min
- Light brown skin
- about 80 min
- Olive skin
- about 100 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Aosta
How breezy and how cloudy Aosta is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Aosta typically peaks at 7 km/h during the day: Beaufort 2, light breeze or less.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 63 % of the sky over Aosta: variable cloud, with about 4.3 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Aosta
How often the day gets hot in Aosta (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Aosta has about 0 hot days, with an average daytime high of 17 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Snow in Aosta
When Aosta is likely to be white: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, Aosta has about 3 days with at least 1 cm of fresh snow, 12 cm in total. The chance of seeing snow during a week's stay is 31 out of 100: possible.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Planning a trip to Aosta
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Aosta in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Aosta has its best school-holiday weather during October half-term (score 61) and its weakest during the Christmas holidays (score 18).
- 55
Easter holidays
Mar – Apr
Fair
- 14 °C by day
- 5.8 h of sun a day
- 14 rainy days a month
Keep in mind: Snow
- 60
May half-term
May – Jun
Good
- 21 °C by day
- 6.3 h of sun a day
- 20 rainy days a month
Good for: Sightseeing & walks
Keep in mind: Snow
- 41
Summer holidays
Jul – Aug
Fair
- 28 °C by day
- 7.5 h of sun a day
- 18 rainy days a month
Keep in mind: Frequent rain
- 61
October half-term
Oct
GoodBest holidays
- 17 °C by day
- 4.3 h of sun a day
- 15 rainy days a month
Good for: Sightseeing & walks
Keep in mind: Snow
- 18
Christmas holidays
Dec – Jan
Poor
- 6 °C by day
- 3.6 h of sun a day
- 11 rainy days a month
Keep in mind: Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 1 h 30 min
- Distance
- 860 km
- Time zone
- UTC+2
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Aosta compared
Put Aosta side by side with another destination.
Aosta vs Chamonix
In October Aosta has the better holiday weather (score 61 vs 55). During the day Chamonix is 3 °C cooler than Aosta.
| in October | Aosta | Chamonix |
|---|---|---|
| Holiday weather score | 61 | 55 |
| Daytime high | 17° | 14° |
| Sunshine | 4 h | 4 h |
| Rainy days | 15 | 13 |
| Best time | May, Sep – Oct | May – Sep |
Through the year
Italy in October: the best places
In October, Aosta ranks 24 among the 31 nearest destinations in this country.
- Piacenza19°76
- 2Alba19°75
- 3Milan19°75
- 4Monza19°75
- 5Cremona20°75
- 6Pavia20°74
- 7Asti19°73
- 8Alessandria19°73
- 24AostaThis page17°61
Near Aosta
Other destinations close by.
Places with a climate like Aosta
Destinations whose weather through the year is closest to Aosta's – good alternatives.
Frequently asked questions about Aosta
When is the best time to visit Aosta?
The best time to visit Aosta is in May and from September to October. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Aosta?
July is the warmest month, with average highs of 29 °C and nights around 18 °C. January is the coolest month at 5 °C.
When does it rain most in Aosta?
Rain is frequent from June to July; the wettest month is June with 220 mm. The driest month is January with 73 mm.
How many hours of sunshine does Aosta get?
Aosta gets around 2,000 hours of sunshine a year. The sunniest month is July with 8.0 hours a day; in December there are 3.3 hours a day.
What time zone is Aosta in?
Aosta is on UTC+1 in January and UTC+2 in July.
How long is the flight from London to Aosta?
A nonstop flight from London to Aosta takes about 1 h 30 min, for a straight-line distance of about 860 km.
Which school holidays are best for Aosta?
Aosta has its best school-holiday weather during October half-term (score 61) and its weakest during the Christmas holidays (score 18). Holiday ratings (0–100): Easter holidays 55, May half-term 60, summer holidays 41, October half-term 61, Christmas holidays 18.