Ayer, Switzerland — Weather in May 2027

Climate Overview

Ayer, Switzerland in May has mild conditions, with highs averaging 11.4°C (53°F) and noticeably cooler mornings. Rain falls on about 19 days this month, totalling around 154 mm.

This month falls at the end of Spring.

Daily highs in May gradually rise from around 9°C (48°F) at the start to 14°C (57°F) by month's end.

May sees fairly even rainfall, totalling about 151 mm across the month.

Expect around 9.4h of sunshine at the start of May, increasing to 11.8h by the end.

The warmest days tend to fall around the 28th, averaging 14.4°C (58°F).

Compared to April, this month is about 4°C warmer with 7 more rainy days. Temperatures will rise further into June.

Monthly May Averages

Temperature

11°C / 3°C

Feels Like

11°C / 1°C

Rain

19 days · 154 mm

Sunshine

10.5h / day

Humidity

80% — Very Humid

Wind

6 km/h

Wind Direction

ESE (107°)

Gusts

32 km/h

Daylight

15 h

Cloud Cover

71%

Clear Sky Days

0.8

UV Index

6.1 — High

Dew Point

4°C — Dry

Moon Phase

Waxing Gibbous · 66%

Snow Days

9 days · 36.7 cm

Frost Days

5 days

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 05:59

Daylight 15h

Sunset 20:56

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	-2°C / -10°C	-5°C / -14°C	14days (135 mm) Wet	5.9h Fair	71% Muggy	2.1 Moderate	Poor	View Details
February	2°C / -7°C	-1°C / -11°C	11days (90 mm) Wet	7.3h Good	70% Muggy	3.1 Moderate	Poor	View Details
March	4°C / -4°C	2°C / -8°C	13days (113 mm) Wet	9h Good	72% Muggy	4.6 Moderate	Poor	View Details
April	8°C / 0°C	6°C / -3°C	12days (105 mm) Wet	10.8h Excellent	75% Muggy	5.8 High	Poor	View Details
May	11°C / 3°C	11°C / 1°C	19days (154 mm) Wet	10.5h Excellent	80% Humid	6.1 High	Wet	View Details
June best	18°C / 9°C	19°C / 8°C	17days (124 mm) Wet	11.6h Excellent	77% Humid	7 High	Good	View Details
July best	21°C / 11°C	21°C / 10°C	15days (118 mm) Wet	12.3h Excellent	73% Muggy	7 High	Good	View Details
August best	21°C / 10°C	21°C / 10°C	13days (114 mm) Wet	11.2h Excellent	73% Muggy	6.3 High	Excellent	View Details
September best	16°C / 7°C	16°C / 5°C	13days (112 mm) Wet	9.3h Good	79% Humid	4.7 Moderate	Good	View Details
October	12°C / 3°C	10°C / 0°C	12days (112 mm) Wet	7.7h Good	80% Humid	3.3 Moderate	Fair	View Details
November	4°C / -4°C	2°C / -8°C	14days (118 mm) Wet	6.3h Fair	79% Humid	2.2 Moderate	Poor	View Details
December	0°C / -8°C	-4°C / -12°C	13days (142 mm) Wet	5.3h Fair	73% Muggy	1.8 Low	Poor	View Details

What to Wear

Bundle up with a warm coat, scarf, and closed-toe shoes. Thermal layers underneath give flexibility between indoors and outdoors.

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

Packing List

Layered clothingLight jacketUmbrellaWaterproof jacketWaterproof shoes

Frequently Asked Questions

Expand all

Is May a good time to visit Ayer?

May is typically wet for visiting Ayer, with average highs of 11°C (53°F) and around 19 rainy days. Ayer, Switzerland in May has mild conditions, with highs averaging 11.4°C (53°F) and noticeably cooler mornings. Rain fa

Does it rain a lot in Ayer in May?

Ayer typically sees around 19 rainy days in May with 154 mm (6.1 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Ayer in May?

Yes, nights in Ayer during May are cold, averaging 3°C (37°F). Pack warm layers and a coat for evenings.

What should I pack for Ayer in May?

With highs of 11°C (53°F) and lows of 3°C (37°F) in May, we recommend: Layered clothing, Light jacket, Umbrella, Waterproof jacket, Waterproof shoes. Comfortable walking shoes are essential.

Is May among the best months weather-wise in Ayer?

May is not the most favourable month weather-wise in Ayer. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Ayer in May?

The average UV index in Ayer during May is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.

How many hours of daylight are there in Ayer in May?

Ayer gets approximately 15 hours of daylight per day in May, with around 11 hours of sunshine.

Does it snow in Ayer in May?

Yes, Ayer typically sees around 9 snow days in May with roughly 37 cm (14 in) of snowfall.

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