Cham, Switzerland — Weather in September 2026

Climate Overview

Cham, Switzerland in September has mild conditions, with highs averaging 19.9°C (68°F) and noticeably cooler mornings. Rain falls on about 12 days this month.

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 22°C (71°F) at the start to 18°C (64°F) by month's end.

September sees fairly even rainfall, totalling about 115 mm across the month.

Expect around 9.7h of sunshine at the start of September, decreasing to 8.1h by the end.

The warmest days tend to fall around the 5th, averaging 22.1°C (72°F).

Compared to August, this month is about 4°C cooler with 0 fewer rainy days. Temperatures begin dropping heading into October.

Monthly September Averages

Temperature

20°C / 13°C

Feels Like

20°C / 12°C

Rain

12 days · 116 mm

Sunshine

9.1h / day

Humidity

79% — Humid

Wind

9 km/h

Wind Direction

SSW (211°)

Gusts

25 km/h

Daylight

12.5 h

Cloud Cover

60%

Clear Sky Days

3.2

UV Index

4.3 — Moderate

Dew Point

13°C — Comfortable

Moon Phase

Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 07:05

Daylight 12.6h

Sunset 19:41

What to Expect

Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	5°C / -1°C	2°C / -4°C	14days (117 mm) Wet	5.4h Fair	82% Humid	1.5 Low	Poor	View Details
February	8°C / 0°C	5°C / -3°C	12days (80 mm) Wet	6.7h Fair	78% Humid	2.3 Moderate	Poor	View Details
March	11°C / 2°C	8°C / -1°C	13days (86 mm) Wet	8.5h Good	74% Muggy	3.4 Moderate	Poor	View Details
April	14°C / 4°C	13°C / 2°C	13days (102 mm) Wet	10.2h Excellent	73% Muggy	4.9 Moderate	Fair	View Details
May	18°C / 8°C	17°C / 7°C	17days (144 mm) Wet	10.3h Excellent	75% Muggy	5.5 High	Fair	View Details
June best	23°C / 14°C	24°C / 14°C	14days (137 mm) Wet	11.7h Excellent	74% Muggy	6.5 High	Excellent	View Details
July best	24°C / 16°C	25°C / 17°C	17days (134 mm) Wet	11.8h Excellent	73% Muggy	6.3 High	Excellent	View Details
August best	24°C / 16°C	26°C / 17°C	12days (143 mm) Wet	10.6h Excellent	75% Muggy	5.7 High	Excellent	View Details
September best	20°C / 13°C	20°C / 12°C	12days (116 mm) Wet	9.1h Good	79% Humid	4.3 Moderate	Excellent	View Details
October	16°C / 8°C	15°C / 7°C	13days (100 mm) Wet	7.2h Good	81% Humid	2.8 Moderate	Good	View Details
November	9°C / 4°C	8°C / 1°C	13days (97 mm) Wet	5.6h Fair	85% Humid	1.7 Low	Poor	View Details
December	6°C / 1°C	4°C / -2°C	15days (107 mm) Wet	4.8h Fair	85% Humid	1.3 Low	Poor	View Details

What to Wear

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaWaterproof jacketComfortable walking shoes

Frequently Asked Questions

Expand all

Is September a good time to visit Cham?

September is typically excellent for visiting Cham, with average highs of 20°C (68°F) and around 12 rainy days. Cham, Switzerland in September has mild conditions, with highs averaging 19.9°C (68°F) and noticeably cooler mornings. R

Does it rain a lot in Cham in September?

Cham typically sees around 12 rainy days in September with 116 mm (4.6 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Cham in September?

Evenings in Cham during September are mild at 13°C (55°F). A light cardigan is usually enough.

What should I pack for Cham in September?

With highs of 20°C (68°F) and lows of 13°C (55°F) in September, we recommend: Umbrella, Waterproof jacket, Comfortable walking shoes. Comfortable walking shoes are essential.

Is September among the best months weather-wise in Cham?

Yes, September offers some of the best weather conditions in Cham with comfortable temperatures and lower chances of rain.

What is the UV index in Cham in September?

The average UV index in Cham during September is 4 (moderate). Sunscreen and sunglasses are recommended during midday hours.

How many hours of daylight are there in Cham in September?

Cham gets approximately 13 hours of daylight per day in September, with around 9 hours of sunshine.

Does it snow in Cham in September?

Snow is uncommon in Cham during September based on 10-year climate averages.

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