May weather forecast
Winterthur, Switzerland

May

Weather in May

May marks a shift towards warmer weather in Winterthur. The city experiences an upward trend in temperatures, hovering between 6.1°C (43°F) and 18.4°C (65.1°F). An evident increase in rain characterizes this month, signaling the onset of early summer showers. Nevertheless, more daylight hours ensure ample opportunities for nature exploration and enjoying city parks.

Temperature

The arrival of May brings an average high-temperature of a comfortable 18.4°C (65.1°F), subtly diverging from April's 15.8°C (60.4°F). A pronounced dip becomes evident during the nights in May as Winterthur logs a consistent average temperature of 6.1°C (43°F).

Humidity

In Winterthur, the average relative humidity in May is 78%.

Rainfall

In Winterthur, in May, during 18.4 rainfall days, 78mm (3.07") of precipitation is typically accumulated. Throughout the year, there are 155.4 rainfall days, and 704mm (27.72") of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Winterthur. During 0.3 snowfall days, in May, Winterthur aggregates 9mm (0.35") of snow. In Winterthur, Switzerland, during the entire year, snow falls for 42.6 days and aggregates up to 729mm (28.7") of snow.

Daylight

In Winterthur, Switzerland, the average length of the day in May is 15h and 8min.
On the first day of the month, sunrise is at 06:07 and sunset at 20:37. On the last day of May, sunrise is at 05:32 and sunset at 21:13 CEST.

Sunshine

In Winterthur, the average sunshine in May is 8.9h.

UV index

In Winterthur, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 4 in May leads to these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.

Frequently asked questions

What are May temperatures in Winterthur?
During May, Winterthur experiences an average high-temperature of 18.4°C (65.1°F) and a low-temperature of 6.1°C (43°F).
What is the average humidity in May in Winterthur?
In May, the average relative humidity is 78%.
How many days does it rain in May in Winterthur?
In Winterthur, Switzerland, in May, it is raining for 18.4 days, with typically 78mm (3.07") of accumulated precipitation.
What is the last month it snows in Winterthur?
May is the last month it regularly snows. During 0.3 snowfall days, in May, Winterthur aggregates 9mm (0.35") of snow.
What is the average length of the day in May in Winterthur?
In May, the average day length is 15h and 8min.
When are sunrise and sunset in May in Winterthur?
On the first day of May in Winterthur, sunrise is at 06:07 and sunset at 20:37. On the last day of the month, sunrise is at 05:32 and sunset at 21:13 CEST.
How long on average sun shines in May in Winterthur?
The average sunshine duration in May in Winterthur is 8.9h.
How high is the UV index in May in Winterthur?
In Winterthur, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in May
Winterthur, Switzerland
  • Average high temperature in May: 18.4°C

The warmest month (with the highest average high temperature) is July (24.6°C).
The month with the lowest average high temperature is January (3.3°C).

  • Average low temperature in May: 6.1°C

The months with the highest average low temperature are July and August (12.1°C).
The coldest month (with the lowest average low temperature) is January (-3.3°C).

Average pressure in May
Winterthur, Switzerland
  • Average pressure in May: 1016.2mbar

The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).

Average wind speed in May
Winterthur, Switzerland
  • Average wind speed in May: 7.7km/h

The windiest month (with the highest average wind speed) is March (8.8km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).

Average humidity in May
Winterthur, Switzerland
  • Average humidity in May: 78%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and July (76%).

Average rainfall in May
Winterthur, Switzerland
  • Average rainfall in May: 78mm

The wettest month (with the highest rainfall) is December (82mm).
The driest month (with the least rainfall) is September (29mm).

Average rainfall days in May
Winterthur, Switzerland
  • Average rainfall days in May: 18.4 days

The month with the highest number of rainy days is May (18.4 days).
The months with the least rainy days are September and November (9.9 days).

Average snowfall in May
Winterthur, Switzerland
  • Average snowfall in May: 9mm

The month with the highest snowfall is January (182mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in May
Winterthur, Switzerland
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Winterthur, Switzerland
  • Average daylight in May: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in May: 8h and 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in May
Winterthur, Switzerland
  • Average sunshine days in May: 11.3 days

The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is February (11.1 days).

Average UV index in May
Winterthur, Switzerland
  • Average UV index in May: 4

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

Average cloud cover in May
Winterthur, Switzerland
  • Average cloud cover in May: 46

The months with the most cloud cover are January and February (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in May
Winterthur, Switzerland
  • Average visibility in May: 8km

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January and February (7km).

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