The week of 9 December 2024 - 15 December 2024 had an average daily temperature of 4 °C (39 °F) and a minimum (nighttime) temperature of 1 °C (34 °F). The current temperatures are roughly same as the long-term average for Heidelberg, with the daily and nighttime temperatures being 5 °C (41 °F) and 0 °C (32 °F), respectively. The average temperatures during different times of day (local time) were following: 7am 2 °C (36 °F), 10am 3 °C (37 °F), 1pm 3 °C (37 °F), 4pm 3 °C (37 °F), 7pm 2 °C (36 °F), 10pm 2 °C (36 °F).

During this week: 4 days without rain and 3 days with light rain were observed. The total precipitation for the week in Heidelberg was 1 mm (0.04 in), which is below the area's average of 18 mm (0.71 in). The daytime hours (from dawn to dusk) had an average cloud coverage of 85 %.

An average wind speed of 2.8 m/s was recorded. The air pressure was 1015 hpa - 1035 hpa. On average, the air humidity in Heidelberg was 81 %.

On average, there were 1 hour clear skies and 8 hours overcast skies during the daytime (from dawn to dusk). The sunrise on average occurred at 08:12, and the sunset occurred at 16:25.

Weather overview

Heidelberg (Germany) is a place with a mild climate. The day temperatures range from 5 °C (40 °F) in January to 25 °C (78 °F) in July. The highest night temperatures could be experienced in July with 14 °C (58 °F), the lowest in January with -1 °C (30 °F). The least rainy month in Heidelberg is September with its 9 days of rain, the rainiest month is May, when it rains 13 days.

January weather

The minimum of the day temperature can be noticed, with its value being 5 °C (40 °F) in Heidelberg, and the night temperature reaches its minimum as well, the value of this measure is -1 °C (30 °F). The number of rainy days descent's start could be observed, with its value being 11 days, and the beginning of the descent of the rainfall amount could be noticed as well, with its value being 65 mm (2.56 in). The maximum of the humidity is observable, its value is 90 %.

February weather

The day temperature starts to rise, with its value being 6 °C (42 °F) in Heidelberg. The rainfall amount continues to descent, with its value of 55 mm (2.17 in), and the number of rainy days descents similarly to the previous month as well, with its value being 10 days. The number of sun hours (without clouds) rise's start could be observed, with its value of 3 hours.

March weather

The beginning of the rise of the number of rainy days could be noticed in Heidelberg, and the rainfall amount rise's start could be observed too. The day temperature rises similarly to the previous month, the value of this measure is 11 °C (52 °F), while the night temperature rise's start could be observed in March. The rise of the number of sun hours (without clouds) can be observed, with its value of 4 hours. The wind speed reaches its maximum in this month.

April weather

The number of rainy days starts to descent, the value of this measure is 10 days in Heidelberg, while the minimum of the rainfall amount can be noticed. The rise of the day temperature can be observed, the value of this measure is 16 °C (60 °F), and the night temperature rises similarly to the previous month as well, with its value of 5 °C (40 °F). The number of sun hours (without clouds) rises similarly to the previous month, its value is 5 hours.

May weather

The rise of the day temperature can be observed, with its value being 20 °C (69 °F) in Heidelberg, and the night temperature rises similarly to the previous month as well, its value is 9 °C (48 °F). The maximum of the number of rainy days can be noticed, its value is 13 days, while the rainfall amount starts to rise, with its value of 82 mm (3.24 in). The tourist season slowly starts in May. The rise of the number of sun hours (without clouds) can be observed, with its value of 7 hours.

June weather

The tourist season is taking place in Heidelberg. The day temperature rises similarly to the previous month, its value is 23 °C (74 °F), and the night temperature continues to rise too, its value is 12 °C (54 °F). The beginning of the descent of the rainfall amount could be noticed, its value is 76 mm (2.99 in). The number of sun hours (without clouds) rises similarly to the previous month, its value is 7 hours. The day length is on its maximum, with its value of 16 hours.

July weather

The tourist season continues this month in Heidelberg. The maximum of the rainfall amount is observable, with its value of 87 mm (3.43 in). The night temperature is on its maximum, and the maximum of the day temperature is observable too, the value of this measure is 25 °C (78 °F). The minimum of the humidity can be noticed, the value of this measure is 68 %. The number of sun hours (without clouds) is on its maximum, with its value being 7 hours.

August weather

There is pending tourist season this month in Heidelberg. The day temperature starts to descent, with its value being 25 °C (77 °F). The descent of the number of rainy days can be observed, with its value being 11 days, while the beginning of the descent of the rainfall amount could be noticed in August. The number of sun hours (without clouds) starts to descent, with its value being 7 hours. The wind speed is on its minimum in August.

September weather

There is pending tourist season this month in Heidelberg. The minimum of the number of rainy days can be noticed in September. The day temperature descents similarly to the previous month, its value is 20 °C (69 °F), while the night temperature starts to descent, with its value being 10 °C (51 °F). The number of sun hours (without clouds) continues to descent, the value of this measure is 5 hours.

October weather

The day temperature descents similarly to the previous month, with its value of 15 °C (59 °F) in Heidelberg, and the night temperature descents similarly to the previous month as well, with its value being 7 °C (44 °F). The number of rainy days starts to rise, with its value of 10 days, and the beginning of the rise of the rainfall amount could be noticed as well. The number of sun hours (without clouds) continues to descent, the value of this measure is 4 hours.

November weather

The night temperature continues to descent, with its value of 3 °C (37 °F) in Heidelberg, and the day temperature descents similarly to the previous month as well, with its value of 9 °C (48 °F). The descent of the number of sun hours (without clouds) can be observed, its value is 2 hours.

December weather

The number of rainy days starts to rise, its value is 12 days in Heidelberg, and the rainfall amount starts to rise as well, with its value of 79 mm (3.10 in). The day temperature descents similarly to the previous month, with its value being 5 °C (41 °F), and the descent of the night temperature can be observed as well, its value is 0 °C (33 °F). The minimum of the number of sun hours (without clouds) can be noticed, the value of this measure is 1 hour. The day length reaches its minimum, with its value of 8 hours.

How many hours of sun to expect in Heidelberg in April?

In April in Heidelberg, you can expect around 5 hours of sunshine.

What is the air temperature in May in Heidelberg at night?

The average night temperature in May in Heidelberg is 9 °C (48 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating.

How many days of precipitation on average can I expect in June in Heidelberg?

There are 12 days, which are rainy in Heidelberg in June, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.9 days of the week, or in general - 41 % days.

What temperature can I expect during the day in Heidelberg in July?

The average daily temperature in July in Heidelberg is 25 °C (78 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.

Is there a wet season in August in Heidelberg?

No, there is no wet season in August in Heidelberg - you can expect 11 days of rain during the month.

Are there good conditions to visit in September in Heidelberg?

There are good conditions for visiting in Heidelberg in September. There are only 9 days of rain in the whole month, so you can leave your umbrella at home. There are some people, who may feel a slight chill at 20 °C (69 °F), but others will feel perfectly fine. The temperature of 10 °C (51 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.

How windy is it in Heidelberg in October?

An average wind scale that can be expected in Heidelberg in October is 3. It is rather a milder or unnoticeable wind, therefore it will not bother you during your holiday.