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Illertissen Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Illertissen.
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Climate overview of Illertissen
Illertissen, Bavaria, Germany, experiences significant temperature variation throughout the year. Summers bring daytime highs of 25°C (77°F) in July, while winters cool to 4°C (39°F) in January.
Rain/snowfall is high, totalling around 1006 mm (40 in) per year. June is the wettest month and February the driest. The city also experiences warm summers and cold winters. The most sunshine falls in July, with an average of 8.1 hours of daily sunshine.
Illertissen Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Illertissen - and find the best time to visit.
Monthly Temperature in Illertissen
Depending on the time of the year, temperatures range from comfortable to chilly in Illertissen. Average maximum daytime temperatures range from a comfortable 25°C (77°F) in July, the warmest time of the year, to a chilly 4°C (39°F) during cooler months like January.
At night, you can expect temperatures ranging from 13°C (55°F) in July to around -2°C (28°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Illertissen
Illertissen has a relatively rain/snowy climate with high precipitation levels, averaging 1006 mm (40 in) of rain/snowfall annually. While rainfall varies throughout the year, each season offers its own charm. June brings wetter days averaging 111 mm (4.4 in) of precipitation, spread over 16 rainy days.
In contrast, the driest month February experiences a drier climate, with about 63 mm (2.5 in) of snow/rainfall spread across 15 snowy/rainy days. For more details, please visit our Illertissen Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Illertissen
Seasonal changes in sunshine hours are quite dramatic in Illertissen. While July receives considerable daily sunshine with up to 8.1 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.5 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Augsburg, Germany (60 KM, 37 Miles).
Daily hours of sunshine
Data from: Augsburg, Germany (60 KM, 37 Miles).
Best Time to Visit Illertissen
Conditions in Illertissen are generally most comfortable in September. They are typically least comfortable in January, February, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
mixed
Apr
good
May
good
Jun
very good
Jul
very good
Aug
very good
Sep
excellent
Oct
good
Nov
cold
Dec
cold
- Best overall: September
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: February, September and October
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -2°C (28°F).
Frequently asked questions about the climate in Illertissen
What is the best time to visit Illertissen?
September typically offers the most optimal weather in Illertissen. In contrast, January, February, November and December tend to have less optimal conditions. Illertissen has warm summers and cold winters.
What temperatures can I expect in Illertissen?
Daytime highs range from 4°C (39°F) in January to 25°C (77°F) in July. Nighttime lows range from -2°C (28°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Illertissen get?
Annual rainfall is around 1006 mm (40 in). June is the wettest month with 111 mm (4.4 in), while February is the driest with 63 mm (2.5 in).
How sunny is Illertissen?
Illertissen receives around 1,724 hours of sunshine per year. July is the sunniest month with 243 hours, while December is the cloudiest with just 46 hours.
Illertissen 3-Day Forecast
Illertissen on the map
Illertissen is highlighted - select any city to see its climate.
Popular in September
Where to go in September - average daytime high across popular destinations.
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20°C (68°F) Hamburg20°C (68°F) Binz18°C (64°F) Winterberg18°C (64°F) Bucket list
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