Fewer crowds
Hotel stays are steady all year.
Hotel stays vary little: the busiest month has only 1.9× the nights of the quietest, so pick on weather.
A good place. At the right time.
Best time to visitBasel & northwest Switzerland.
Plan your visit
Find your month.
What matters most?
Weather 50% · Crowds 30% · Cost 20%
Start with September.
#1 of 12 · Balanced · 6.5/10
Overnight stays vary little through the year.
Based on Nordwestschweiz regional averages.
- Afternoon high
- 71°F
- Daylight
- about 13 hours
- Crowds
- Steady
About 11 rain days in a typical September, with about 13 hours of daylight.
Check what is open. The off-season flag comes from visitor patterns. Confirm accommodation, services and transport for your dates.
Price context. National hotel prices and local visitor demand suggest about usual. No measured regional room rate is available.
Historical averages, not forecasts or live prices.
A regional guide. Figures cover Nordwestschweiz, including Basel. Conditions vary within the region.
The whole calendar
Already have dates?
Explore your month, then weigh up the trade-offs.
September at a glance
Balanced match #1 · 6.5/10
Overnight stays vary little through the year.
About 11 rain days in a typical September, with about 13 hours of daylight.
Check what is open. The off-season flag comes from visitor patterns. Confirm accommodation, services and transport for your dates.
Read the September guide- Afternoon high
- 71°F
- Night low
- 51°F
- Sea temperature
- —
- Rain days
- 11
- Daylight
- 12h 39m
- Crowds
- Steady
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.
| Rank | Month | Overall | Weather | Crowds | Cost | High | Low | Rain days | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| #1 | September | 6.5 | 8.4/10 Very good | Steady | Expensive | 71°F | 51°F | 11 | 12h 39m |
| #2 | July | 6.4 | 8.0/10 Very good | Steady | Expensive | 79°F | 58°F | 13 | 15h 37m |
| #3 | August | 6.4 | 7.9/10 Very good | Steady | Expensive | 79°F | 57°F | 11 | 14h 19m |
| #4 | June | 6.3 | 8.0/10 Very good | Steady | Expensive | 77°F | 56°F | 13 | 15h 56m |
| #5 | May | 6.0 | 7.4/10 Very good | Steady | Expensive | 68°F | 48°F | 15 | 15h 04m |
| #6 | April | 5.9 | 7.1/10 Very good | Steady | Expensive | 62°F | 41°F | 10 | 13h 34m |
| #7 | October | 5.8 | 7.0/10 Very good | Steady | Expensive | 62°F | 44°F | 11 | 10h 58m |
| #8 | March | 5.4 | 6.1/10 Good | Steady | Expensive | 55°F | 35°F | 11 | 11h 49m |
| #9 | February | 4.9 | 5.0/10 Good | Steady | Expensive | 47°F | 30°F | 9 | 10h 14m |
| #10 | November | 4.8 | 5.0/10 Good | Steady | Expensive | 51°F | 36°F | 12 | 9h 22m |
| #11 | December | 4.4 | 4.2/10 Fair | Steady | Expensive | 45°F | 32°F | 16 | 8h 29m |
| #12 | January | 4.3 | 4.0/10 Fair | Steady | Expensive | 43°F | 30°F | 15 | 8h 51m |
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.
Afternoon highNight low
Top balanced match · September
September
- High
- 71°F
- Low
- 51°F
- Rain
- 11 days
- Crowds
- Steady
Some weather measures are unavailable. Gaps in the chart mean no data.
Off season can mean fewer services. Confirm what is open for your dates.
Nordwestschweiz regional averages · Historical patterns, not a forecast. Gaps mean no data. Crowds compare months within this region.
Very-good-or-better weather scores: April to October. No month has a poor weather score.
There is no real busy season: the quietest month, January, still runs at 52% of the busiest.
The two busiest months account for 20% of annual overnight stays.
On the 2024 EU comparison, Switzerland's restaurants and hotels are well above EU average.
Before you go
Pack a little context.
Good weather
September has the highest weather score.
Very good or better April to October. September has the highest displayed weather score (8.4/10).
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
School breaks meet steady visitor levels.
Hotel stays here vary little through the year, so US school breaks don't put you in a busier season.
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
Hotel stays vary little across the year.
43–47°FAfternoon highs
Spring
Mar–May
Hotel stays vary little across the year.
55–68°FAfternoon highs
Summer
Jun–Aug
Hotel stays vary little across the year.
77–79°FAfternoon highs
Autumn
Sep–Nov
Hotel stays vary little across the year.
51–71°FAfternoon highs
Ranges span monthly average afternoon highs, not daily extremes. Conditions and seasonal openings vary within Basel & northwest Switzerland.
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 region | CH03 · Nordwestschweiz |
| Region type | Countryside (Eurostat NUTS3 typologies weighted by population: urban 0%, coastal 0%, mountain 84%; median ground height 436 m) |
| Population used | 1.2 million (1 January 2025) |
| Crowd reference years | 2024–2025 average |
| How our weather was checked | 7 open weather stations in this region, January and July: afternoon highs typically within 2°F (0.9°C), night lows within 1°F (0.3°C). |
| Climate index | HCI:Urban, observed climatology over 15 years (2011–2025) |
| Hotel occupancy (annual) | 58% |
| Accommodation mix | 93% hotels, 2% camping |
| Country price level (restaurants & hotels, EU27 = 100) | 171 |
| Daylight latitude | 47.42° 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.