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A good place. At the right time.

Best time to visitLake Geneva & Valais.

Plan your visit

Find your month.

Temperature unit for this guide
What matters most?

Start with September.

#1 of 12 · Balanced · 6.4/10

Overnight stays are 68% of the busiest month.

Based on Région lémanique regional averages.

Afternoon high
71°F
Daylight
about 13 hours
Crowds
Busy

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

Historical averages, not forecasts or live prices.

Illustration of Lavaux vineyard terraces near Rivaz overlooking Lake Geneva
Lavaux vineyards above Lake Geneva

A regional guide. Figures cover Région lémanique, including Geneva, Lausanne, Montreux, Zermatt and Verbier. Conditions vary within the region. Part of The Swiss Alps; see the Switzerland guide for the wider area.

The whole calendar

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

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Average afternoon highsTop 3 matches · Balanced priorities

September at a glance

Balanced match #1 · 6.4/10

Overnight stays are 68% of the busiest month.

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

Read the September guide
Afternoon high
71°F
Night low
51°F
Rain days
9
Daylight
12h 38m
Crowds
Busy

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.

Lake Geneva & Valais · all 12 months
RankMonthOverallWeatherCrowdsCostHighLowRain daysDaylight
#1September 6.4 8.3/10 Very good BusyExpensive 71°F51°F 912h 38m
#2June 6.4 8.2/10 Very good BusyExpensive 75°F55°F 1115h 46m
#3May 6.4 7.1/10 Very good ModerateExpensive 66°F47°F 1214h 57m
#4October 6.4 7.0/10 Very good ModerateExpensive 63°F44°F 911h 00m
#5April 6.2 6.8/10 Good ModerateExpensive 61°F40°F 913h 31m
#6November 5.9 5.0/10 Good ModerateExpensive 51°F36°F 119h 29m
#7July 5.6 8.4/10 Very good PeakExpensive 78°F58°F 1015h 28m
#8August 5.6 8.4/10 Very good PeakExpensive 79°F57°F 914h 14m
#9March 5.1 5.8/10 Good BusyExpensive 54°F35°F 911h 49m
#10December 4.4 4.0/10 Fair BusyExpensive 44°F30°F 148h 38m
#11January 4.1 3.9/10 Fair BusyExpensive 43°F28°F 148h 59m
#12February 3.8 4.8/10 Fair PeakExpensive 47°F30°F 810h 19m

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 · °F15°30°45°60°75°90°January: 43°F afternoon highFebruary: 47°F afternoon highMarch: 54°F afternoon highApril: 61°F afternoon highMay: 66°F afternoon highJune: 75°F afternoon highJuly: 78°F afternoon highAugust: 79°F afternoon highSeptember: 71°F afternoon highOctober: 63°F afternoon highNovember: 51°F afternoon highDecember: 44°F afternoon highJanuary: 28°F night lowFebruary: 30°F night lowMarch: 35°F night lowApril: 40°F night lowMay: 47°F night lowJune: 55°F night lowJuly: 58°F night lowAugust: 57°F night lowSeptember: 51°F night lowOctober: 44°F night lowNovember: 36°F night lowDecember: 30°F night lowRain days150January: 14 rain days14February: 8 rain days8March: 9 rain days9April: 9 rain days9May: 12 rain days12June: 11 rain days11July: 10 rain days10August: 9 rain days9September: 9 rain days9October: 9 rain days9November: 11 rain days11December: 14 rain days14Crowds · stronger shading means busierJanuary: BusyJanFebruary: PeakFebMarch: BusyMarApril: ModerateAprMay: ModerateMayJune: BusyJunJuly: PeakJulAugust: PeakAugSeptember: BusySepOctober: ModerateOctNovember: ModerateNovDecember: BusyDec 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 · °F15°30°45°60°75°90°January: 43°F afternoon highFebruary: 47°F afternoon highMarch: 54°F afternoon highApril: 61°F afternoon highMay: 66°F afternoon highJune: 75°F afternoon highJuly: 78°F afternoon highAugust: 79°F afternoon highSeptember: 71°F afternoon highOctober: 63°F afternoon highNovember: 51°F afternoon highDecember: 44°F afternoon highJanuary: 28°F night lowFebruary: 30°F night lowMarch: 35°F night lowApril: 40°F night lowMay: 47°F night lowJune: 55°F night lowJuly: 58°F night lowAugust: 57°F night lowSeptember: 51°F night lowOctober: 44°F night lowNovember: 36°F night lowDecember: 30°F night lowRain days150January: 14 rain days14February: 8 rain days8March: 9 rain days9April: 9 rain days9May: 12 rain days12June: 11 rain days11July: 10 rain days10August: 9 rain days9September: 9 rain days9October: 9 rain days9November: 11 rain days11December: 14 rain days14Crowds · stronger shading means busierJanuary: BusyJanFebruary: PeakMarch: BusyApril: ModerateMay: ModerateMayJune: BusyJuly: PeakAugust: PeakSeptember: BusySepOctober: ModerateNovember: ModerateDecember: BusyDec
Explore a month

September

High
71°F
Low
51°F
Rain
9 days
Crowds
Busy

Région lémanique regional averages · Historical patterns, not a forecast. Gaps mean no data. Crowds compare months within this region.

The busiest month records 2.9 times the overnight stays of the quietest.

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

Peak-season months: February and July to August. No month falls in low season.

The two busiest months account for 25% of annual overnight stays.

Nonstop flights from the US (2024): all year, from New York JFK, Newark and Washington Dulles.

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

On the 2024 EU comparison, Switzerland's restaurants and hotels are well above EU average.

Before you go

Pack a little context.

Fewer crowds

November is quietest.

November, at 35% of the busiest month (August).

Good weather

May, outside the busy season.

Very good or better May to October. July to August share the highest displayed weather score (8.4/10). Highest weather score outside the busy season: May. These scores measure sightseeing comfort, not snow or ski conditions.

Lower prices

October to December.

These are three lower-price months on Switzerland's historical 2024–2025 national hotel index. It cannot identify this region's cheapest bookable rooms.

School holidays

Summer break meets the busy season.

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

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

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 busy season for visitors.

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

43–47°FAfternoon highs

Spring

Mar–May

A busier start, a quieter finish.

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

54–66°FAfternoon highs

Summer

Jun–Aug

A busy season for visitors.

June falls in busy season; July and August fall in peak season.

75–79°FAfternoon highs

Autumn

Sep–Nov

A busier start, a quieter finish.

September falls in busy season; October and November fall in moderate season.

51–71°FAfternoon highs

Ranges span monthly average afternoon highs, not daily extremes. Conditions and seasonal openings vary within Lake Geneva & Valais.

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 regionCH01 · Région lémanique
Region typeMountains (Eurostat NUTS3 typologies weighted by population: urban 0%, coastal 0%, mountain 100%; median ground height 931 m)
Population used1.8 million (1 January 2025)
Crowd reference years2024–2025 average
How our weather was checked23 open weather stations in this region, January and July: afternoon highs typically within 1°F (0.7°C), night lows within 2°F (0.8°C).
Climate indexHCI:Urban, observed climatology over 15 years (2011–2025)
Hotel occupancy (annual)59%
Accommodation mix69% hotels, 7% camping
Country price level (restaurants & hotels, EU27 = 100)171
Daylight latitude46.34° 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 national. Hand-written notes are marked and nothing depends on them. Full method · this region's data.