Lachen
27.72° N, 88.56° E
When to go?
Mean −3 °C, 9 rain days in the month (339 mm).
Good for
- Ideal for skiingSnow on the ground: 1947 cm on average in the month.
Against
- Freezinglows of −9 °C
- Torrential rain38 mm per rain day
Mean −2 °C, 10 rain days in the month (343 mm).
Good for
- Ideal for skiingSnow on the ground: 2023 cm on average in the month.
Against
- Freezinglows of −7 °C
- Torrential rain34 mm per rain day
Mean 1 °C, 12 rain days in the month (372 mm).
Good for
- Ideal for skiingSnow on the ground: 2086 cm on average in the month.
Against
- Torrential rain31 mm per rain day
Mean 4 °C, 13 rain days in the month (265 mm).
Nothing against it.
Mean 6 °C, 17 rain days in the month (209 mm).
Nothing against it.
Mean 10 °C, 24 rain days in the month (240 mm).
Against
- Often rainyrain on 8 days in 10
Mean 11 °C, 30 rain days in the month (311 mm).
Against
- Often rainyrain almost every day
- Torrential rain10 mm per rain day
Mean 11 °C, 27 rain days in the month (271 mm).
Against
- Often rainyrain on 9 days in 10
Mean 9 °C, 18 rain days in the month (181 mm).
Nothing against it.
Mean 5 °C, 11 rain days in the month (183 mm).
Good for
- Ideal to visitTemperature and rain in the ideal range.
Mean 1 °C, 8 rain days in the month (248 mm).
Good for
- Ideal for skiingSnow on the ground: 1874 cm on average in the month.
Mean −1 °C, 8 rain days in the month (271 mm).
Good for
- Ideal for skiingSnow on the ground: 1934 cm on average in the month.
Against
- Freezinglows of −8 °C
The best month is October. Ideal for skiing: November–March (snow on the ground, at least 40 cm). Avoid June–August (often rainy, at times torrential rain).
What is the climate like?
Temperature and rain
Monthly min and max temperature (°C)
Monthly min and max temperature (°C)
How much it rains
Rain days and how much water
Rain days and how much water
Bars: length = rain days, thickness = mm on a rain day, area = the month's rain. 3 mm a day7 mm a day15 mm a day
Colour = the month's rain: 103060100160250400mm
Daylight hours
Daylight and sky: sunrise, sunset and cloud cover
daylight under a clear sky (average share)daylight under cloud
daylight under a clear sky (average share)daylight under cloud
Times on the 15th of each month, in local time: daylight saving where and when it applies, standard time in the other months.
Snow on the ground
Mean snow depth on the ground (cm)
Mean snow depth on the ground (cm)
Effect of climate change
Today's climate (1996–2025) compared with 1961–1990:
In short
Year by year
Temperature of each year
Against 1961–1990 the mean temperature of today (1996–2025) has changed by +1.1 °C; in the last ten years by +1.4 °C. Warmest year: 2025 (+2.0 °C), coldest: 1953 (−0.9 °C).
December and November warmed the most (+1.6 and +1.4 °C), April the least (+0.5 °C). The warm season (above the annual mean of then, 3 °C) begins 6 days earlier and ends 7 days later.
Warming stripes: after an idea by Ed Hawkins (University of Reading), showyourstripes.info, CC BY 4.0.
Rain of each year (% against 1961–1990)
more rain than in 1961–1990less rain
Rain in a year: +2 % every ten years.
Snow, then and now
−16 %winter snow today, compared with 1961–1990