Boudry, Switzerland — Weather in September 2026

Climate Overview

Boudry, Switzerland in September has warm conditions, with highs averaging 20.4°C (69°F). Rain falls on about 14 days this month.

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 22°C (72°F) at the start to 18°C (64°F) by month's end.

September sees fairly even rainfall, totalling about 116 mm across the month.

Expect around 10.2h of sunshine at the start of September, decreasing to 8.0h by the end.

Wind speeds pick up through the month, from 10 km/h (6 mph) to 13 km/h (8 mph).

The warmest days tend to fall around the 5th, averaging 22.8°C (73°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 / 13°C

Rain

14 days · 116 mm

Sunshine

9.2h / day

Humidity

79% — Humid

Wind

11 km/h

Wind Direction

SW (228°)

Gusts

32 km/h

Daylight

12.5 h

Cloud Cover

63%

Clear Sky Days

2.6

UV Index

4.4 — 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 07:11

Daylight 12.6h

Sunset 19:48

What to Expect

Daytime temperatures around 20°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	6°C / 0°C	2°C / -3°C	15days (139 mm) Wet	4.7h Fair	85% Humid	1.5 Low	Poor	View Details
February	8°C / 1°C	5°C / -2°C	13days (91 mm) Wet	6.4h Fair	81% Humid	2.2 Moderate	Poor	View Details
March	11°C / 3°C	8°C / 0°C	14days (104 mm) Wet	8.2h Good	77% Humid	3.7 Moderate	Poor	View Details
April	15°C / 6°C	13°C / 4°C	15days (106 mm) Wet	10.2h Excellent	74% Muggy	5.1 High	Fair	View Details
May	18°C / 10°C	17°C / 8°C	18days (160 mm) Wet	10.5h Excellent	77% Humid	5.7 High	Wet	View Details
June best	23°C / 15°C	24°C / 15°C	18days (156 mm) Wet	11.9h Excellent	76% Humid	6.7 High	Excellent	View Details
July best	25°C / 17°C	26°C / 17°C	15days (141 mm) Wet	12.3h Excellent	73% Muggy	6.6 High	Excellent	View Details
August best	25°C / 17°C	26°C / 18°C	14days (122 mm) Wet	11.1h Excellent	74% Muggy	6 High	Excellent	View Details
September best	20°C / 13°C	20°C / 13°C	14days (116 mm) Wet	9.2h Good	79% Humid	4.4 Moderate	Excellent	View Details
October best	16°C / 9°C	15°C / 8°C	14days (120 mm) Wet	7h Good	83% Humid	2.9 Moderate	Good	View Details
November	10°C / 4°C	8°C / 2°C	15days (126 mm) Wet	5.3h Fair	87% Very Muggy	1.7 Low	Poor	View Details
December	7°C / 2°C	4°C / -2°C	15days (131 mm) Wet	4.5h Fair	87% Very Muggy	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 jacketWaterproof shoesSunscreen (SPF 30+)Sunglasses

Frequently Asked Questions

Expand all

Is September a good time to visit Boudry?

September is typically excellent for visiting Boudry, with average highs of 20°C (69°F) and around 14 rainy days. Boudry, Switzerland in September has warm conditions, with highs averaging 20.4°C (69°F). Rain falls on about 14 days th

Does it rain a lot in Boudry in September?

Boudry typically sees around 14 rainy days in September with 116 mm (4.6 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Boudry in September?

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

What should I pack for Boudry in September?

With highs of 20°C (69°F) and lows of 13°C (56°F) in September, we recommend: Umbrella, Waterproof jacket, Waterproof shoes, Sunscreen (SPF 30+), Sunglasses. Comfortable walking shoes are essential.

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

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

What is the UV index in Boudry in September?

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

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

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

Does it snow in Boudry in September?

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

Last updated: