Illmensee Temperature by Month
Illmensee, Baden-Württemberg, Germany has an average annual maximum temperature of 14°C (57°F), ranging from 4°C (39°F) in January to 24°C (75°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Illmensee Monthly Temperatures
The weather in Illmensee experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 15°C (59°F) in July to -2°C (28°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Illmensee by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. July, the warmest month, averages 229 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Illmensee vs Germany
The map below shows the annual temperature across Germany. You can also select individual months if you want to compare a specific time of year.
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Illmensee vs World: Temperature Compared
Illmensee's average annual maximum temperature is 14°C (57°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Illmensee?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Illmensee, January is the coolest month, with average highs of 4°C (39°F) and humidity around 80% — considered very high. In July, the warmest month, temperatures average 24°C (75°F) with 71% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Illmensee's weather — including monthly rainfall, sunshine hours, and humidity — visit our Illmensee climate page.
