May weather forecastHallein, Austria
May
Weather in May
May signals the advent of a warmer climate in Hallein. Characterized by a significant rise in temperatures (averaging a high of 15.8°C (60.4°F) and a low of 5.7°C (42.3°F)), the city embraces the full bloom of spring. An increase in rainfall is noted with 104mm (4.09") contributing to the environment's lush green hue. Daylight hours continue to extend, while the UV index takes a hike and sun visibility surges. As this transformation unfolds, the steady Hallein winds slightly decelerate, providing a perfect foil for the rising temperatures.Temperature
Hallein transitions into May recording an average high-temperature of a still moderate 15.8°C (60.4°F), closely aligning with the preceding month's temperature. During May in Hallein, the average low-temperature is recorded at a cold 5.7°C (42.3°F).Humidity
The average relative humidity in May in Hallein is 83%.Rainfall
The month with the most rainfall is May, when the rain falls for 21.8 days and typically aggregates up to 104mm (4.09") of precipitation.Snowfall
Months with snowfall in Hallein are January through May, October through December. May is the last month it regularly snows in Hallein. During 0.3 snowfall days, in May, Hallein aggregates 4mm (0.16") of snow. In Hallein, during the entire year, snow falls for 44.2 days and aggregates up to 1044mm (41.1") of snow.Daylight
In Hallein, the average length of the day in May is 15h and 9min.On the first day of May, sunrise is at 05:49 and sunset at 20:20. On the last day of the month, sunrise is at 05:13 and sunset at 20:56 CEST.
Sunshine
In May, the average sunshine is 8.3h.UV index
In May, the average daily maximum UV index in Hallein is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum high UV index of 4 in May translates into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Hallein, Austria
- Average high temperature in May: 15.8°C
The warmest month (with the highest average high temperature) is August (21.9°C).
The month with the lowest average high temperature is January (1.1°C).
- Average low temperature in May: 5.7°C
The month with the highest average low temperature is August (10.8°C).
The coldest month (with the lowest average low temperature) is February (-5.6°C).
Average pressure in May
Hallein, Austria
- Average pressure in May: 1015.7mbar
The month with the highest atmospheric pressure is December (1020.4mbar).
The months with the lowest atmospheric pressure are April and May (1015.7mbar).
Average wind speed in May
Hallein, Austria
- Average wind speed in May: 7.1km/h
The windiest month (with the highest average wind speed) is March (8.5km/h).
The calmest months (with the lowest average wind speed) are August and September (6.2km/h).
Average humidity in May
Hallein, Austria
- Average humidity in May: 83%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is April (79%).
Average rainfall in May
Hallein, Austria
- Average rainfall in May: 104mm
The wettest month (with the highest rainfall) is May (104mm).
The driest month (with the least rainfall) is November (30mm).
Average rainfall days in May
Hallein, Austria
- Average rainfall days in May: 21.8 days
The month with the highest number of rainy days is May (21.8 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in May
Hallein, Austria
- Average snowfall in May: 4mm
The month with the highest snowfall is January (427mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Hallein, Austria
- 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
Hallein, Austria
- Average daylight in May: 15h and 12min
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 18min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in May
Hallein, Austria
- Average sunshine days in May: 7.7 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is May (7.7 days).
Average UV index in May
Hallein, Austria
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Hallein, Austria
- Average cloud cover in May: 49
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in May
Hallein, Austria
- Average visibility in May: 8km
The months with the highest visibility are March, April, May, June, July, August, October, November and December (8km).
The months with the lowest visibility are January, February and September (7km).





