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A good place. At the right time.

Best time to visitAosta Valley.

Plan your visit

Find your month.

Temperature unit for this guide
What matters most?

Start with September.

#1 of 12 · Balanced · 8.3/10

Overnight stays are 29% of the busiest month.

Based on Valle d’Aosta/Vallée d’Aoste regional averages.

Afternoon high
72°F
Daylight
about 13 hours
Crowds
Low

This weather score measures sightseeing comfort. Snow and ski conditions need a separate check.

Read the September guideExplore all 12 months

Historical averages, not forecasts or live prices.

Illustration of Representative early-summer Val Ferret meadow and granite massif scenery near Courmayeur
Val Ferret meadows and granite peaks near Courmayeur

A regional guide. Figures cover Valle d’Aosta/Vallée d’Aoste, including Courmayeur and Cervinia. Conditions vary within the region.

The whole calendar

Already have dates?

Explore your month, then weigh up the trade-offs.

Choose your month
Average afternoon highsTop 3 matches · Balanced priorities

September at a glance

Balanced match #1 · 8.3/10

Overnight stays are 29% of the busiest month.

This weather score measures sightseeing comfort. Snow and ski conditions need a separate check.

Read the September guide
Afternoon high
72°F
Night low
—
Rain days
5
Daylight
12h 37m
Crowds
Low

All 12 months, on the same measures. Tap a heading to sort or a month to open its guide.Select a month to open its guide. Scroll the table for more detail.

Aosta Valley · all 12 months
RankMonthOverallWeatherCrowdsCostHighLowRain daysDaylight
#1September 8.3 9.0/10 Excellent LowModerate 72°F— 512h 37m
#2June 8.2 8.9/10 Very good LowModerate 76°F— 515h 41m
#3May 7.9 7.3/10 Very good LowModerate 66°F— 614h 53m
#4October 7.4 6.9/10 Good LowModerate 62°F— 611h 02m
#5July 7.3 9.3/10 Excellent BusyPricey 80°F— 415h 24m
#6April 7.2 6.5/10 Good LowModerate 59°F— 513h 29m
#7August 6.6 9.2/10 Excellent PeakPricey 80°F— 414h 12m
#8November 6.4 4.8/10 Fair LowModerate 48°F— 79h 32m
#9March 6.1 5.6/10 Good ModeratePricey 52°F— 611h 50m
#10December 5.6 4.4/10 Fair ModeratePricey 39°F— 88h 43m
#11February 5.4 5.1/10 Good BusyPricey 45°F— 510h 21m
#12January 5.3 4.4/10 Fair ModeratePricey 38°F— 69h 03m

Overall follows your priorities. Crowds compare each month with this place's own year. Highs, lows and rain days are historical averages for 2011–2025.

A little perspective

The shape of the year.

Temperature unit for this page
Afternoon highNight low

Top balanced match · September

Historical monthly averages. Gaps mean data is unavailable. The comparison table above lists all months in text. The dotted vertical line marks the selected month.Temperature · °F30°45°60°75°90°January: 38°F afternoon highFebruary: 45°F afternoon highMarch: 52°F afternoon highApril: 59°F afternoon highMay: 66°F afternoon highJune: 76°F afternoon highJuly: 80°F afternoon highAugust: 80°F afternoon highSeptember: 72°F afternoon highOctober: 62°F afternoon highNovember: 48°F afternoon highDecember: 39°F afternoon highRain days100January: 6 rain days6February: 5 rain days5March: 6 rain days6April: 5 rain days5May: 6 rain days6June: 5 rain days5July: 4 rain days4August: 4 rain days4September: 5 rain days5October: 6 rain days6November: 7 rain days7December: 8 rain days8Crowds · stronger shading means busierJanuary: ModerateJanFebruary: BusyFebMarch: ModerateMarApril: LowAprMay: LowMayJune: LowJunJuly: BusyJulAugust: PeakAugSeptember: LowSepOctober: LowOctNovember: LowNovDecember: ModerateDec Historical monthly averages. Gaps mean data is unavailable. The comparison table above lists all months in text. The dotted vertical line marks the selected month.Temperature · °F30°45°60°75°90°January: 38°F afternoon highFebruary: 45°F afternoon highMarch: 52°F afternoon highApril: 59°F afternoon highMay: 66°F afternoon highJune: 76°F afternoon highJuly: 80°F afternoon highAugust: 80°F afternoon highSeptember: 72°F afternoon highOctober: 62°F afternoon highNovember: 48°F afternoon highDecember: 39°F afternoon highRain days100January: 6 rain days6February: 5 rain days5March: 6 rain days6April: 5 rain days5May: 6 rain days6June: 5 rain days5July: 4 rain days4August: 4 rain days4September: 5 rain days5October: 6 rain days6November: 7 rain days7December: 8 rain days8Crowds · stronger shading means busierJanuary: ModerateJanFebruary: BusyMarch: ModerateApril: LowMay: LowMayJune: LowJuly: BusyAugust: PeakSeptember: LowSepOctober: LowNovember: LowDecember: ModerateDec
Explore a month

September

High
72°F
Low
No data
Rain
5 days
Crowds
Low

Some weather measures are unavailable. Gaps in the chart mean no data.

Valle d’Aosta/Vallée d’Aoste regional averages · Historical patterns, not a forecast. Gaps mean no data. Crowds compare months within this region.

The busiest month records 8.6 times the overnight stays of the quietest.

Very-good-or-better weather scores: May to September. No month has a poor weather score.

Peak-season months: August. Low-season months: April to June and September to November.

The two busiest months account for 35% of annual overnight stays.

Events that move crowds and prices Ferragosto (15 August) and Italy's peak holiday weeks, typically 1–17 August 2027: Italians' own peak holiday: beaches packed and roads jammed; city shops and restaurants close around the 15th. Official site.

Winter weather scores here measure comfort for sightseeing and walking, not skiing: snow and ski conditions aren't in them.

Hotel prices here run +19% against their yearly average in August and −9% in October, on the regional price index.

Before you go

Pack a little context.

Fewer crowds

October is quietest.

October, at 12% of the busiest month (August). Low season, under 35% of the peak: April to June and September to November.

Good weather

September, outside the busy season.

Very good or better May to September. July has the highest displayed weather score (9.3/10). Highest weather score outside the busy season: September. These scores measure sightseeing comfort, not snow or ski conditions.

Lower prices

May and October to November.

These are three lower-price months on the historical regional hotel index; there is no euro room-rate baseline.

School holidays

School breaks span different visitor seasons.

If your dates follow US school breaks: June falls in low season; July falls in busy season; August falls in peak season. Spring break spans moderate season in March and low season in April.

Local families travel too: at least 30% of people in Italy live where schools are out on a typical day June to August and December. Italy's school calendar for September isn't fully published yet. (School holidays: OpenHolidays, ODbL, and official calendars.)

About these answers

These are historical seasonal patterns. Crowds compare a month with this place's own busiest month; they do not measure queues at individual sights. Weather answers use the displayed weather scores. These seasonal facts stay the same when you change your priorities; your Overall recommendation updates above. Prices retain the scope stated beside them. Full methodology.

Choose your season

The year, season by season.

Winter

Dec–Feb

A quieter start, a busier finish.

December and January fall in moderate season; February falls in busy season.

38–45°FAfternoon highs

Spring

Mar–May

A busier start, a quieter finish.

March falls in moderate season; April and May fall in low season.

52–66°FAfternoon highs

Summer

Jun–Aug

A quieter start, a busier finish.

June falls in low season; July falls in busy season; August falls in peak season.

76–80°FAfternoon highs

Autumn

Sep–Nov

Low season throughout.

48–72°FAfternoon highs

Ranges span monthly average afternoon highs, not daily extremes. Conditions and seasonal openings vary within Aosta Valley.

How we know

The default Balanced Overall weighs weather 50%, crowds 30% and cost 20%. Your priority choice updates the Overall, month ranks and recommendation. While your weather weight is at least 40%, Overall cannot exceed weather by more than 2. Close scores can describe different trip experiences. How the scores work.

Statistical regionITC2 · Valle d’Aosta/Vallée d’Aoste
Region typeMountains (Eurostat NUTS3 typologies weighted by population: urban 0%, coastal 0%, mountain 100%; median ground height 2131 m)
Population used123,000 (1 January 2025)
Crowd reference years2024–2025 average
How our weather was checkedOfficial climate averages for Aosta (Piazza Plouves) from the national weather service, every month: afternoon highs typically within 2°F (1.3°C), night lows off by more than 4°F (2°C), so not shown.
Climate indexHCI:Urban, observed climatology over 15 years (2011–2025)
Hotel occupancy (annual)51%
Accommodation mix66% hotels, 9% camping
Hotel ratesISTAT, NIC consumer price index for accommodation services (ECOICOP 112), by region
Country price level (restaurants & hotels, EU27 = 100)107
Daylight latitude45.73° N

Crowds: Eurostat nights spent at tourist accommodation establishments by month and NUTS 2 region, per 1,000 inhabitants, divided by days in the month. "Season here" is the month's figure as a share of this region's busiest month. "Visitors" ranks overnight visitors per resident against all Europe's regions that month. Weather: Holiday Climate Index (Scott et al. 2016; Rutty et al. 2020) computed from ERA5 reanalysis with daily highs, night lows and rain days corrected from open national weather-service station records and population-weighted to the region. Prices are regional where the page says so (ISTAT, NIC consumer price index for accommodation services (ECOICOP 112), by region), otherwise national. Hand-written notes are marked and nothing depends on them. Full method · this region's data.