The best times to visit Heidelberg for ideal weather are

May 7th to October 14th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

 

 


Other Heidelberg Travel Info

Weather in Heidelberg

Temperature

Average temperatures in Heidelberg vary greatly. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a very low chance of rain or snow throughout the year. The area is more temperate than most — in the 64th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Heidelberg, the hottest months are August, July, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 78.9°F (26.1°C) with temperatures rarely dropping below 62.5°F (16.9°C) at night.

Heidelberg Temperatures (Fahrenheit)

Key
High
Average
Low

Heidelberg Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Heidelberg Perceived Temperature (F)

Key
High
Average
Low

Heidelberg Perceived Temperature (C)

Key
High
Average
Low

 

Average Heidelberg Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 42.9 38.6 34
Feb 47 41.1 35.8
Mar 50.7 44.8 38.9
Apr 62.9 55 46.1
May 71.3 62.7 53.8
Jun 73.2 65.7 57.5
Jul 75.2 67.2 59.2
Aug 76.5 68.3 59.9
Sep 67.4 59.6 51.5
Oct 58.5 51.8 45.6
Nov 49.5 44.8 40
Dec 40 36.7 33.3

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 6.1 3.7 1.1
Feb 8.3 5.1 2.1
Mar 10.4 7.1 3.8
Apr 17.2 12.8 7.8
May 21.8 17.1 12.1
Jun 22.9 18.7 14.2
Jul 24 19.6 15.1
Aug 24.7 20.2 15.5
Sep 19.7 15.3 10.8
Oct 14.7 11 7.6
Nov 9.7 7.1 4.4
Dec 4.4 2.6 0.7

 


 
Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Heidelberg.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Heidelberg (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 0% 0 0
Feb 0% 0 0
Mar 0% 0 0
Apr 0% 0 0
May 0% 0 0
Jun 0% 0 0
Jul 0% 0 0
Aug 0% 0 0
Sep 0% 0 0
Oct 0% 0 0
Nov 0% 0 0
Dec 0% 0 0

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 0 0 0
Feb 0 0 0
Mar 0 0 0
Apr 0 0 0
May 0 0 0
Jun 0 0 0
Jul 0 0 0
Aug 0 0 0
Sep 0 0 0
Oct 0 0 0
Nov 0 0 0
Dec 0 0 0
–>

 

Humidity and Wind

Heidelberg has some very humid months, with other moderately humid months on the other side of the year. The least humid month is April (48.5% relative humidity), and the most humid month is December (75.2%).

Wind in Heidelberg is usually calm. The windiest month is March, followed by January and June. March’s average wind speed of around 6.3 knots (7.2 MPH or 11.6 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early July where average top sustained speeds reach 14.3 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Heidelberg.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 5.7 Light breeze 10.9 Gentle breeze
Feb 4.8 Light breeze 10.3 Gentle breeze
Mar 6.3 Light breeze 12.9 Gentle breeze
Apr 5.1 Light breeze 11.3 Significant breeze
May 4.8 Light breeze 10.6 Gentle breeze
Jun 5.6 Light breeze 12.4 Significant breeze
Jul 5.6 Light breeze 12.3 Gentle breeze
Aug 4.3 Light breeze 9.2 Gentle breeze
Sep 4.4 Light breeze 9.9 Gentle breeze
Oct 4.1 Light breeze 8.9 Gentle breeze
Nov 3.8 Barely noticeable 9.3 Gentle breeze
Dec 4.9 Light breeze 9.7 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 65.6%
Feb 65.2%
Mar 59%
Apr 48.5%
May 54.5%
Jun 54.4%
Jul 54%
Aug 53.9%
Sep 60.7%
Oct 67.4%
Nov 71.8%
Dec 75.2%

 

Is it Safe to Travel to Heidelberg?

Our best data indicates this area is somewhat safe. As of Dec 04, 2023 there are travel warnings for Germany; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Oct 30, 2023.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Heidelberg, Germany is July, followed by June and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Heidelberg in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is very reliable. Displayed data is calculated relative to the peak, so a score of 45.9 in December means 45.9% of the tourists vs. July.

 

 

Overall Heidelberg Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 78.9°F (26.1°C) and 44.2°F (6.8°C) with warmer temperatures in the later months. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. June – August is the busiest season for tourism in Heidelberg, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 68.3°F (20.2°C) and 45.7°F (7.6°C), which will feel chilly given the humidity and wind. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.

Winter (December through February)

Weather is too cold this time of year in Heidelberg to be enjoyable for warm weather travelers. The average high during this season is between 51.1°F (10.6°C) and 35.8°F (2.1°C). These times of year are the slowest with tourists.

 

Best Times to Travel› Germany › Heidelberg, Germany