Concise, Switzerland — Weather in September 2026

Climate Overview

Concise, Switzerland in September has warm conditions, with highs averaging 20.5°C (69°F). Rain falls on about 12 days this month.

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 23°C (73°F) at the start to 18°C (64°F) by month's end.

Rainfall is heaviest during the last third of the month, while the first third tends to be drier.

Expect around 10.0h of sunshine at the start of September, decreasing to 7.8h by the end.

The warmest days tend to fall around the 5th, averaging 22.9°C (73°F).

Compared to August, this month is about 4°C cooler with 1 more rainy days. Temperatures begin dropping heading into October.

Monthly September Averages

Temperature

21°C / 13°C

Feels Like

21°C / 13°C

Rain

12 days · 96 mm

Sunshine

9h / day

Humidity

79% — Humid

Wind

10 km/h

Wind Direction

SW (236°)

Gusts

29 km/h

Daylight

12.5 h

Cloud Cover

61%

Clear Sky Days

2.1

UV Index

4.5 — 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 07:12

Daylight 12.6h

Sunset 19:48

What to Expect

Daytime temperatures around 21°C (69°F) are ideal for full-day outdoor exploration. 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 / 0°C	2°C / -4°C	14days (119 mm) Wet	4.9h Fair	85% Humid	1.6 Low	Poor	View Details
February	8°C / 1°C	6°C / -2°C	12days (77 mm) Wet	6.4h Fair	81% Humid	2.4 Moderate	Poor	View Details
March	11°C / 3°C	9°C / 0°C	13days (86 mm) Wet	8.3h Good	77% Humid	3.8 Moderate	Poor	View Details
April	15°C / 6°C	13°C / 3°C	12days (82 mm) Wet	10.3h Excellent	73% Muggy	5.2 High	Fair	View Details
May	18°C / 9°C	18°C / 8°C	15days (124 mm) Wet	10.4h Excellent	77% Humid	5.9 High	Good	View Details
June best	23°C / 15°C	25°C / 15°C	15days (102 mm) Wet	11.8h Excellent	75% Muggy	6.8 High	Excellent	View Details
July best	25°C / 16°C	26°C / 17°C	13days (101 mm) Wet	12.2h Excellent	72% Muggy	6.7 High	Excellent	View Details
August best	25°C / 17°C	26°C / 18°C	11days (86 mm) Wet	11h Excellent	74% Muggy	6.1 High	Excellent	View Details
September best	21°C / 13°C	21°C / 13°C	12days (96 mm) Wet	9h Good	79% Humid	4.5 Moderate	Excellent	View Details
October	16°C / 9°C	15°C / 8°C	12days (100 mm) Wet	7h Good	83% Humid	3.1 Moderate	Good	View Details
November	10°C / 4°C	8°C / 2°C	14days (113 mm) Wet	5.5h Fair	87% Very Muggy	1.8 Low	Poor	View Details
December	7°C / 1°C	4°C / -2°C	14days (120 mm) Wet	4.7h Fair	88% Very Muggy	1.4 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 jacketSunscreen (SPF 30+)SunglassesComfortable walking shoes

Frequently Asked Questions

Expand all

Is September a good time to visit Concise?

September is typically excellent for visiting Concise, with average highs of 21°C (69°F) and around 12 rainy days. Concise, Switzerland in September has warm conditions, with highs averaging 20.5°C (69°F). Rain falls on about 12 days t

Does it rain a lot in Concise in September?

Concise typically sees around 12 rainy days in September with 96 mm (3.8 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Concise in September?

Evenings in Concise during September are mild at 13°C (56°F). A light cardigan is usually enough.

What should I pack for Concise in September?

With highs of 21°C (69°F) and lows of 13°C (56°F) in September, we recommend: Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. Comfortable walking shoes are essential.

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

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

What is the UV index in Concise in September?

The average UV index in Concise during September is 5 (moderate). Sunscreen and sunglasses are recommended during midday hours.

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

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

Does it snow in Concise in September?

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

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