Rorschach, Switzerland — Weather in May 2027

Climate Overview

Rorschach, Switzerland in May has mild conditions, with highs averaging 17.5°C (64°F) and noticeably cooler mornings. Rain falls on about 17 days this month, totalling around 148 mm.

This month falls at the end of Spring.

Daily highs in May gradually rise from around 15°C (60°F) at the start to 20°C (67°F) by month's end.

May sees fairly even rainfall, totalling about 147 mm across the month.

Expect around 8.7h of sunshine at the start of May, increasing to 11.9h by the end.

The warmest days tend to fall around the 29th, averaging 19.8°C (68°F).

Compared to April, this month is about 3°C warmer with 4 more rainy days. Temperatures will rise further into June.

Monthly May Averages

Temperature

18°C / 9°C

Feels Like

17°C / 8°C

Rain

17 days · 148 mm

Sunshine

9.8h / day

Humidity

75% — Humid

Wind

11 km/h

Wind Direction

WNW (300°)

Gusts

28 km/h

Daylight

15.1 h

Cloud Cover

67%

Clear Sky Days

2.8

UV Index

5.6 — High

Dew Point

9°C — Dry

Moon Phase

Waxing Gibbous · 66%

Snow Days

1 days · 0.6 cm

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 05:47

Daylight 15.1h

Sunset 20:53

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	4°C / -2°C	1°C / -6°C	15days (114 mm) Wet	5.1h Fair	82% Humid	1.5 Low	Poor	View Details
February	7°C / -1°C	4°C / -4°C	12days (78 mm) Wet	6.4h Fair	79% Humid	2.2 Moderate	Poor	View Details
March	10°C / 2°C	8°C / -1°C	13days (86 mm) Wet	8.2h Good	76% Humid	3.3 Moderate	Poor	View Details
April	14°C / 5°C	13°C / 3°C	13days (98 mm) Wet	9.8h Good	73% Muggy	4.8 Moderate	Fair	View Details
May	18°C / 9°C	17°C / 8°C	17days (148 mm) Wet	9.8h Good	75% Muggy	5.6 High	Fair	View Details
June best	23°C / 15°C	24°C / 15°C	15days (147 mm) Wet	11.4h Excellent	75% Muggy	6.5 High	Excellent	View Details
July best	24°C / 16°C	25°C / 17°C	16days (149 mm) Wet	11.2h Excellent	75% Muggy	6.3 High	Excellent	View Details
August best	24°C / 16°C	25°C / 17°C	14days (172 mm) Wet	10.2h Excellent	77% Humid	5.6 High	Excellent	View Details
September best	20°C / 12°C	20°C / 12°C	13days (120 mm) Wet	8.7h Good	80% Humid	4.1 Moderate	Good	View Details
October best	16°C / 8°C	15°C / 6°C	13days (101 mm) Wet	6.9h Fair	82% Humid	2.8 Moderate	Good	View Details
November	9°C / 3°C	7°C / 0°C	14days (94 mm) Wet	5.3h Fair	84% Humid	1.6 Low	Poor	View Details
December	6°C / 0°C	3°C / -4°C	15days (103 mm) Wet	4.6h Fair	83% Humid	1.2 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 Rorschach?

May is typically fair for visiting Rorschach, with average highs of 18°C (64°F) and around 17 rainy days. Rorschach, Switzerland in May has mild conditions, with highs averaging 17.5°C (64°F) and noticeably cooler mornings. Ra

Does it rain a lot in Rorschach in May?

Rorschach typically sees around 17 rainy days in May with 148 mm (5.8 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Rorschach in May?

Nights in Rorschach during May are cool at around 9°C (49°F). Bring a jacket or sweater for evenings.

What should I pack for Rorschach in May?

With highs of 18°C (64°F) and lows of 9°C (49°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 Rorschach?

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

What is the UV index in Rorschach in May?

The average UV index in Rorschach 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 Rorschach in May?

Rorschach gets approximately 15 hours of daylight per day in May, with around 10 hours of sunshine.

Does it snow in Rorschach in May?

Yes, Rorschach typically sees around 1 snow days in May with roughly 1 cm (0 in) of snowfall.

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