The climate of Brno, a city located at 200 meters (650 feet) above sea level in south-eastern Czechia, is
, characterized by cold winters, with temperatures often below freezing (0 °C or 32 °F), and mild to pleasantly warm summers.
is cold and gray. Snowfalls are frequent, but generally not abundant.
Sometimes, cold waves from Siberia can occur, during which the temperatures can drop to -15 °C (5 °F) or below. The coldest record is -25 °C (-13 °F) and was set in January 1942.
, the temperatures are pleasant and suitable for outdoor activities, although sometimes there can be rains and thunderstorms.
Every now and then (and more often in recent years due to global warming), there can be short hot periods, with maximum temperatures exceeding 30 °C (86 °F). The highest record is 37.8 °C (100 °F) and was set in August 2013.
to visit Brno runs from mid-May to mid-September, since it is the warmest and sunniest period of the year. Sometimes, it can be hot in July and August, while in other circumstances, nights can be cool or even a little cold even in these months, so it can be useful to bring a sweatshirt or sweater and a light jacket for the evening.
. Here are the average temperatures.
January, the coldest month of the year, is generally a very cold month. The average temperature is of
-1.1 °C, with a minimum of
-3.9 °C and a maximum of
1.7 °C.

On the coldest nights of the month, the temperature usually drops to around
-12.5 °C. However, it dropped to
-22 °C in January 2006.

On the warmest days of the month, the temperature usually reaches around
10 °C. However, it reached
16 °C in January 2007.

Precipitation amounts to
25 mm, distributed over 6 days.
The day lasts on average 8 hours and 40 minutes.

There are on average 1.5 hours of sunshine per day. So, the sun shines 20% of the time.
The average humidity is 85%. Hence, the air is normally humid.
The average wind speed is of
11.6 kph.
February is generally a cold month. The average temperature is of
0.6 °C, with a minimum of
-3 °C and a maximum of
4.2 °C.

On the coldest nights of the month, the temperature usually drops to around
-11 °C. However, it dropped to
-17.2 °C in February 2006.

On the warmest days of the month, the temperature usually reaches around
11.5 °C. However, it reached
17.4 °C in February 2008.

Precipitation amounts to
25 mm, distributed over 5 days.
The day lasts on average 10 hours and 10 minutes.

There are on average 3 hours of sunshine per day. So, the sun shines 29% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
12.3 kph.
March is generally a quite cold month. The average temperature is of
4.8 °C, with a minimum of
0.3 °C and a maximum of
9.4 °C.

On the coldest nights of the month, the temperature usually drops to around
-6 °C. However, it dropped to
-14.7 °C in March 2005.

On the warmest days of the month, the temperature usually reaches around
18 °C. However, it reached
21.3 °C in March 2010.

Precipitation amounts to
29.7 mm, distributed over 6 days.
The day lasts on average 12 hours and 0 minutes.

There are on average 4.5 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 70%. Hence, the air is normally humid.
The average wind speed is of
14 kph.
April is generally a mild month. The average temperature is of
10.2 °C, with a minimum of
4.7 °C and a maximum of
15.8 °C.

On the coldest nights of the month, the temperature usually drops to around
-2.5 °C. However, it dropped to
-6.3 °C in April 2003.

On the warmest days of the month, the temperature usually reaches around
24 °C. However, it reached
29.5 °C in April 2012.

Precipitation amounts to
30 mm, distributed over 6 days.
The day lasts on average 13 hours and 50 minutes.

There are on average 7 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 62%.
The average wind speed is of
14 kph.
May is generally a very mild month. The average temperature is of
14.6 °C, with a minimum of
9.1 °C and a maximum of
20.1 °C.

On the coldest nights of the month, the temperature usually drops to around
3 °C. However, it dropped to
-2 °C in May 2007.

On the warmest days of the month, the temperature usually reaches around
27.5 °C. However, it reached
32 °C in May 2017.

Precipitation amounts to
60 mm, distributed over 8 days.
The day lasts on average 15 hours and 25 minutes. So the days are long.

There are on average 7.5 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 65%.
The average wind speed is of
13.2 kph.
June is generally a warm month. The average temperature is of
18.3 °C, with a minimum of
12.7 °C and a maximum of
23.9 °C.

On the coldest nights of the month, the temperature usually drops to around
7 °C. However, it dropped to
2.6 °C in June 1997.

On the warmest days of the month, the temperature usually reaches around
31.5 °C. However, it reached
36.6 °C in June 2000.

Precipitation amounts to
70 mm, distributed over 9 days.
The day lasts on average 16 hours and 10 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.

There are on average 8 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 66%.
The average wind speed is of
11.7 kph.
July is generally a warm month. The average temperature is of
20.3 °C, with a minimum of
14.4 °C and a maximum of
26.2 °C.

On the coldest nights of the month, the temperature usually drops to around
8.5 °C. However, it dropped to
5.9 °C in July 1993.

On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
36.4 °C in July 2013.

Precipitation amounts to
70 mm, distributed over 9 days.
The day lasts on average 15 hours and 40 minutes. So the days are long.

There are on average 8 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 64%.
The average wind speed is of
11.5 kph.
August, the warmest month of the year, is generally a warm month. The average temperature is of
20.3 °C, with a minimum of
14.4 °C and a maximum of
26.2 °C.

On the coldest nights of the month, the temperature usually drops to around
8.5 °C. However, it dropped to
5 °C in August 2006.

On the warmest days of the month, the temperature usually reaches around
33 °C. However, it reached
37.8 °C in August 2013.

Precipitation amounts to
55 mm, distributed over 7 days.
The day lasts on average 14 hours and 20 minutes. So the days are long.

There are on average 8 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 64%.
The average wind speed is of
10.7 kph.
September is generally a very mild month. The average temperature is of
15.2 °C, with a minimum of
10.1 °C and a maximum of
20.3 °C.

On the coldest nights of the month, the temperature usually drops to around
4 °C. However, it dropped to
0.4 °C in September 2018.

On the warmest days of the month, the temperature usually reaches around
27 °C. However, it reached
31.5 °C in September 2015.

Precipitation amounts to
50 mm, distributed over 7 days.
The day lasts on average 12 hours and 30 minutes.

There are on average 6 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
11.9 kph.
October is generally a mild month. The average temperature is of
9.8 °C, with a minimum of
5.6 °C and a maximum of
13.9 °C.

On the coldest nights of the month, the temperature usually drops to around
-1.5 °C. However, it dropped to
-6.5 °C in October 1997.

On the warmest days of the month, the temperature usually reaches around
22.5 °C. However, it reached
27.7 °C in October 2011.

Precipitation amounts to
30 mm, distributed over 6 days.
The day lasts on average 10 hours and 40 minutes.

There are on average 3.5 hours of sunshine per day. So, the sun shines 34% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
11.7 kph.
November is generally a quite cold month. The average temperature is of
4.6 °C, with a minimum of
1.6 °C and a maximum of
7.6 °C.

On the coldest nights of the month, the temperature usually drops to around
-5.5 °C. However, it dropped to
-11.9 °C in November 1993.

On the warmest days of the month, the temperature usually reaches around
15.5 °C. However, it reached
19.3 °C in November 2010.

Precipitation amounts to
35 mm, distributed over 7 days.
The day lasts on average 9 hours and 5 minutes.

There are on average 2 hours of sunshine per day. So, the sun shines 22% of the time.
The average humidity is 85%. Hence, the air is normally humid.
The average wind speed is of
12 kph.
December is generally a very cold month. The average temperature is of
-0.1 °C, with a minimum of
-2.7 °C and a maximum of
2.5 °C.

On the coldest nights of the month, the temperature usually drops to around
-11 °C. However, it dropped to
-21 °C in December 1996.

On the warmest days of the month, the temperature usually reaches around
10 °C. However, it reached
19 °C in December 1999.

Precipitation amounts to
30 mm, distributed over 8 days.
The day lasts on average 8 hours and 20 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.

There are on average 1.5 hours of sunshine per day. So, the sun shines 17% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of
11.4 kph.