May weather forecast
Brno, Czech Republic

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Weather in May

Brno delights in the full bloom of spring during May, with a marked change in weather conditions from the previous month. Attendees should prepare for a significant increase in rainfall from April to May, with the levels rising to an average of 41mm (1.61"). Despite the increased rainfall, the temperature continues its upward trend, paving the way for warmer days. The increase in daylight hours provides ample opportunity for sightseeing. The end of May marks the beginning of the summer season, bringing anticipation for the warmer months ahead.

Temperature

With the onset of May in Brno, the average high-temperature subtly transitions from a mild 15.8°C (60.4°F) in April to a comfortable 18.8°C (65.8°F). The average temperature drops to a frosty 8.4°C (47.1°F) during the night in the month of May.

Humidity

The average relative humidity in May is 75%.

Rainfall

May is the month with the most rainfall in Brno. Rain falls for 13.8 days and accumulates 41mm (1.61") of precipitation.

Snowfall

In Brno, snow does not fall in May through September.

Daylight

In Brno, Czech Republic, the average length of the day in May is 15h and 20min.
On the first day of May in Brno, sunrise is at 05:31 and sunset at 20:10. On the last day of the month, sunrise is at 04:53 and sunset at 20:49 CEST.

Sunshine

The average sunshine in May in Brno, Czech Republic, is 9.1h.

UV index

In Brno, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 4 in May translates into these instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.

Frequently asked questions

What are the temperatures in Brno in May?

The high-temperature, in May, in Brno, records 18.8°C (65.8°F), while the low-temperature is 8.4°C (47.1°F).

What is the average humidity in May in Brno?

The average relative humidity in May is 75%.

What is the rainiest month in Brno?

May is the month with the most rainfall in Brno. Rain falls for 13.8 days and accumulates 41mm (1.61") of precipitation.

How many days does it rain in May in Brno?

In Brno, in May, during 13.8 rainfall days, 41mm (1.61") of precipitation is typically accumulated.

When it does not snow in Brno?

May through September are months without snowfall in Brno.

Does it snow in Brno in May?

In May, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May in Brno?

In Brno, the average day length in May is 15h and 20min.

When is the sunrise / sunset in May in Brno?

In May, on the first day of the month, sunrise is at 05:31 and sunset at 20:10. On the last day of the month, sunrise is at 04:53 and sunset at 20:49 CEST.

How many hours of sunshine does Brno have in May?

The average sunshine duration in May in Brno, Czech Republic, is 9.1h.

What is the UV index intensity in May in Brno?

In May, the average daily maximum UV index in Brno is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in May
Brno, Czech Republic

Average temperature in May - Brno, Czech Republic
  • Average high temperature in May: 18.8°C

The warmest month (with the highest average high temperature) is August (26.1°C).
The month with the lowest average high temperature is January (0.5°C).

  • Average low temperature in May: 8.4°C

The month with the highest average low temperature is August (14.7°C).
The coldest month (with the lowest average low temperature) is January (-3.9°C).

Average pressure in May
Brno, Czech Republic

Average pressure in May - Brno, Czech Republic
  • Average pressure in May: 1015.3mbar

The month with the highest atmospheric pressure is December (1019.6mbar).
The month with the lowest atmospheric pressure is June (1015mbar).

Average wind speed in May
Brno, Czech Republic

Average wind speed in May - Brno, Czech Republic
  • Average wind speed in May: 12.2km/h

The windiest month (with the highest average wind speed) is March (13.7km/h).
The calmest month (with the lowest average wind speed) is August (9.6km/h).

Average humidity in May
Brno, Czech Republic

Average humidity in May - Brno, Czech Republic
  • Average humidity in May: 75%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (65%).

Average rainfall in May
Brno, Czech Republic

Average rainfall in May - Brno, Czech Republic
  • Average rainfall in May: 41mm

The wettest month (with the highest rainfall) is May (41mm).
The driest months (with the least rainfall) are February and April (13mm).

Average rainfall days in May
Brno, Czech Republic

Average rainfall days in May - Brno, Czech Republic
  • Average rainfall days in May: 13.8 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in May
Brno, Czech Republic

Average snowfall in May - Brno, Czech Republic
  • Average snowfall in May: 0mm

The month with the highest snowfall is January (74mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in May
Brno, Czech Republic

Average snowfall days in May - Brno, Czech Republic
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Brno, Czech Republic

Average daylight in May / Average sunshine in May - Brno, Czech Republic
  • Average daylight in May: 15h and 2min

The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).

  • Average sunshine in May: 9h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).

Average sunshine days in May
Brno, Czech Republic

Average sunshine days in May - Brno, Czech Republic
  • Average sunshine days in May: 14.3 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is May (14.3 days).

Average UV index in May
Brno, Czech Republic

Average UV index in May - Brno, Czech Republic
  • Average UV index in May: 4

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

Average cloud cover in May
Brno, Czech Republic

Average cloud cover in May - Brno, Czech Republic
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in May
Brno, Czech Republic

Average visibility in May - Brno, Czech Republic
  • Average visibility in May: 9km

The months with the highest visibility are April and August (10km).
The months with the lowest visibility are January and December (8km).

Brno, Czech Republic

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