Karlsruhe is a city of 310,000 inhabitants, located in the south-west of Germany, in the state of
, on the banks of the Rhine River, and at 49 degrees north latitude.
About 10 km (6 mi) southwest is the border with France, while about 30 km (18 mi) south is Baden-Baden. Also south of the city is the northern part of the
. The temperature rarely drops below -10 °C (14 °F), although it has dropped below -20 °C (-4 °F) in the past. The coldest record is -23.9 °C (-11 °F), set in January 1940.
, with an average temperature of 21 °C (70 °F) in July and a maximum of 27 °C (80.5 °F), we are in the warmest area of Germany.
, usually of short duration, during which the temperature can reach or exceed 35 °C (95 °F). The heat record is 40.2 °C (104.4 °F), set in August 2003. Due to the location in the Rhine Valley, the muggy heat is felt on hot days.
to visit Karlsruhe 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.
. Here are the average temperatures.
January, the coldest month of the year, is generally a cold month. The average temperature is of
2.5 °C, with a minimum of
-0.3 °C and a maximum of
5.3 °C.

On the coldest nights of the month, the temperature usually drops to around
-8.5 °C. However, it dropped to
-16.2 °C in January 2009.

On the warmest days of the month, the temperature usually reaches around
13 °C. However, it reached
17.5 °C in January 1999.

Precipitation amounts to
57 mm, distributed over 11 days.
The day lasts on average 8 hours and 50 minutes.

There are on average 2 hours of sunshine per day. So, the sun shines 22% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is of
14.2 kph.
February is generally a cold month. The average temperature is of
3.6 °C, with a minimum of
0 °C and a maximum of
7.3 °C.

On the coldest nights of the month, the temperature usually drops to around
-7 °C. However, it dropped to
-15.9 °C in February 2012.

On the warmest days of the month, the temperature usually reaches around
15.5 °C. However, it reached
19.5 °C in February 1998.

Precipitation amounts to
52.6 mm, distributed over 9 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 30% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of
14.2 kph.
March is generally a quite mild month. The average temperature is of
7.3 °C, with a minimum of
2.5 °C and a maximum of
12.1 °C.

On the coldest nights of the month, the temperature usually drops to around
-4 °C. However, it dropped to
-14.6 °C in March 2005.

On the warmest days of the month, the temperature usually reaches around
20.5 °C. However, it reached
24.9 °C in March 1998.

Precipitation amounts to
52.4 mm, distributed over 10 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 38% of the time.
The average humidity is 69%.
The average wind speed is of
14.3 kph.
April is generally a mild month. The average temperature is of
11.2 °C, with a minimum of
5.3 °C and a maximum of
17 °C.

On the coldest nights of the month, the temperature usually drops to around
-1.5 °C. However, it dropped to
-5 °C in April 2003.

On the warmest days of the month, the temperature usually reaches around
26 °C. However, it reached
30.4 °C in April 2012.

Precipitation amounts to
46.6 mm, distributed over 9 days.
The day lasts on average 13 hours and 50 minutes.

There are on average 6.5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 63%.
The average wind speed is of
12.4 kph.
May is generally a very mild month. The average temperature is of
15.3 °C, with a minimum of
9.5 °C and a maximum of
21 °C.

On the coldest nights of the month, the temperature usually drops to around
3 °C. However, it dropped to
-0.9 °C in May 2011.

On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
33.3 °C in May 2009.

Precipitation amounts to
76.7 mm, distributed over 11 days.
The day lasts on average 15 hours and 25 minutes. So the days are long.

There are on average 7 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 65%.
The average wind speed is of
12 kph.
June is generally a warm month. The average temperature is of
18.9 °C, with a minimum of
13 °C and a maximum of
24.7 °C.

On the coldest nights of the month, the temperature usually drops to around
7.5 °C. However, it dropped to
3.6 °C in June 2006.

On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
37.3 °C in June 2019.

Precipitation amounts to
70.1 mm, distributed over 10 days.
The day lasts on average 16 hours and 5 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 50% of the time.
The average humidity is 63%.
The average wind speed is of
10.8 kph.
July, the warmest month of the year, is generally a warm month. The average temperature is of
21 °C, with a minimum of
15 °C and a maximum of
26.9 °C.

On the coldest nights of the month, the temperature usually drops to around
10 °C. However, it dropped to
6.9 °C in July 2019.

On the warmest days of the month, the temperature usually reaches around
35 °C. However, it reached
39.2 °C in July 2019.

Precipitation amounts to
79.2 mm, distributed over 10 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 52% of the time.
The average humidity is 63%.
The average wind speed is of
11 kph.
August is generally a warm month. The average temperature is of
20.7 °C, with a minimum of
14.6 °C and a maximum of
26.8 °C.

On the coldest nights of the month, the temperature usually drops to around
9.5 °C. However, it dropped to
6.3 °C in August 1998.

On the warmest days of the month, the temperature usually reaches around
34.5 °C. However, it reached
40.2 °C in August 2003.

Precipitation amounts to
60.8 mm, distributed over 9 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 54% of the time.
The average humidity is 67%.
The average wind speed is of
9.8 kph.
September is generally a very mild month. The average temperature is of
16.2 °C, with a minimum of
10.7 °C and a maximum of
21.8 °C.

On the coldest nights of the month, the temperature usually drops to around
5 °C. However, it dropped to
1.4 °C in September 2018.

On the warmest days of the month, the temperature usually reaches around
28.5 °C. However, it reached
33.2 °C in September 2016.

Precipitation amounts to
55.3 mm, distributed over 8 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 48% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
10.4 kph.
October is generally a mild month. The average temperature is of
11.5 °C, with a minimum of
7.1 °C and a maximum of
16 °C.

On the coldest nights of the month, the temperature usually drops to around
0.5 °C. However, it dropped to
-4.1 °C in October 2012.

On the warmest days of the month, the temperature usually reaches around
24 °C. However, it reached
28.9 °C in October 2004.

Precipitation amounts to
66.9 mm, distributed over 10 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 35% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of
11.3 kph.
November is generally a quite cold month. The average temperature is of
6.4 °C, with a minimum of
3.2 °C and a maximum of
9.5 °C.

On the coldest nights of the month, the temperature usually drops to around
-3 °C. However, it dropped to
-8 °C in November 1998.

On the warmest days of the month, the temperature usually reaches around
17 °C. However, it reached
21.8 °C in November 2005.

Precipitation amounts to
65.8 mm, distributed over 11 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 86%. Hence, the air is normally humid.
The average wind speed is of
11.6 kph.
December is generally a cold month. The average temperature is of
3.3 °C, with a minimum of
0.6 °C and a maximum of
5.9 °C.

On the coldest nights of the month, the temperature usually drops to around
-7.5 °C. However, it dropped to
-18.7 °C in December 2010.

On the warmest days of the month, the temperature usually reaches around
13.5 °C. However, it reached
16.7 °C in December 2013.

Precipitation amounts to
72 mm, distributed over 12 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 86%. Hence, the air is normally humid.
The average wind speed is of
13.9 kph.