May weather forecast
Český Krumlov, Czech Republic

May in Český Krumlov ushers the city into the threshold of summer characterized by a progressive increase in temperature and daylight hours. There's a significant elevation in UV index reaching to 6, demanding more stringent sun protection. Rainy days reduce to 15 while rainfall increases to 84mm (3.31"), siting a paradoxical blend of sun and showers. Meanwhile, temperatures consistently creep into two-digit figures from 6°C (42.8°F) to 16°C (60.8°F). While occasional showers might require an umbrella on standby, the warmer weather typically encourages outdoor jaunts.

Temperature

The beginning of May in Český Krumlov signals a rise in the average high-temperature, moving from a cool 11°C (51.8°F) in April to a refreshing 16°C (60.8°F). Český Krumlov's nights in May cool down to an average low-temperature of 6°C (42.8°F).

Rainfall

In May, the rain falls for 15 days. Throughout May, 84mm (3.31") of precipitation is accumulated. Throughout the year, there are 174 rainfall days, and 795mm (31.3") of precipitation is accumulated.

Daylight

In Český Krumlov, the average length of the day in May is 15h and 17min.
On the first day of May in Český Krumlov, sunrise is at 05:41 and sunset at 20:18. On the last day of the month, sunrise is at 05:04 and sunset at 20:56 CEST.

Sunshine

In May, the average sunshine in Český Krumlov is 6h.

UV index

The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: A daily high UV index of 6 in May leads to these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.