The best times to visit Aachen for ideal weather are

May 21st to October 7th

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



Other Aachen Travel Info

Weather in Aachen


Average temperatures in Aachen vary drastically. 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 somewhat temperate — in the 59th 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 Aachen, the hottest months are August, July, and then June. See average monthly temperatures below. The warmest time of year is generally mid August where highs are regularly around 77.1°F (25.1°C) with temperatures rarely dropping below 60.5°F (15.8°C) at night.

Aachen Temperatures (Fahrenheit)


Aachen Temperatures (Celsius)


“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.

Aachen Perceived Temperature (F)


Aachen Perceived Temperature (C)



Average Aachen 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 42.4 39 35.7
Feb 34.1 30.3 26.2
Mar 53.2 47.1 40.9
Apr 52.3 46.1 40.1
May 65 57.1 48.9
Jun 66.2 59.3 52.4
Jul 67.2 60.4 54.5
Aug 72 64.2 56.7
Sep 65.5 59 52.4
Oct 57.5 51.5 46.1
Nov 50.4 45.2 40.7
Dec 43.5 40.1 36.8

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 5.8 3.9 2.1
Feb 1.2 -0.9 -3.2
Mar 11.8 8.4 4.9
Apr 11.3 7.8 4.5
May 18.3 13.9 9.4
Jun 19 15.2 11.3
Jul 19.6 15.8 12.5
Aug 22.2 17.9 13.7
Sep 18.6 15 11.3
Oct 14.2 10.8 7.8
Nov 10.2 7.3 4.8
Dec 6.4 4.5 2.7


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 Aachen.

Days with precipitation

Snow on the Ground

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

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

Aachen has some extremely humid months, and above average humidity throughout the year. The least humid month is May (62.5% relative humidity), and the most humid month is December (85.2%).

Wind in Aachen is usually moderate. The windiest month is December, followed by January and October. December’s average wind speed of around 13.8 knots (15.9 MPH or 25.6 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early January where average top sustained speeds reach 27.8 knots, which is considered a strong breeze.

Relative Humidity (%)

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

Avg. Relative Humidity


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

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 12.2 Significant breeze 17.6 Strong breeze
Feb 8.9 Gentle breeze 13.1 Significant breeze
Mar 7.3 Gentle breeze 11.3 Strong breeze
Apr 9.1 Gentle breeze 13.9 Significant breeze
May 8 Gentle breeze 12.2 Strong breeze
Jun 8 Gentle breeze 12.4 Significant breeze
Jul 7.6 Gentle breeze 11.6 Strong breeze
Aug 8 Gentle breeze 12.4 Significant breeze
Sep 8.5 Gentle breeze 13 Strong breeze
Oct 9.5 Gentle breeze 14.2 Significant breeze
Nov 8.8 Gentle breeze 13.5 Strong breeze
Dec 13.8 Significant breeze 19.5 Strong breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 82.4%
Feb 78.9%
Mar 69.6%
Apr 67.8%
May 62.5%
Jun 71.3%
Jul 71.3%
Aug 66.5%
Sep 69%
Oct 73.7%
Nov 79.8%
Dec 85.2%


Is it Safe to Travel to Aachen?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Germany; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Oct 07, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Aachen, Germany is September, followed by August and October. 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 Aachen in June. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

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 45.4 in June means 45.4% of the tourists vs. September.



Overall Aachen Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 70.4°F (21.3°C) and 46.5°F (8.1°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 comfortably cool weather with high temperatures that are comfortable. June – August is the second busiest season for tourism in Aachen, so lodging and other accommodations may cost slightly more.

Fall (September through November)

Fall daily highs range from 68.6°F (20.3°C) and 45.3°F (7.4°C), which will feel chilly given the humidity and wind. Tourism is the busiest during these months due to the weather, so hotels may be higher priced.

Winter (December through February)

Weather is too cold this time of year in Aachen to be enjoyable for warm weather travelers. The average high during this season is between 48.4°F (9.1°C) and 22.7°F (-5.2°C). These times of year are the slowest with tourists.


Best Times to TravelGermany › Aachen, Germany