Altdorf Temperature by Month

Altdorf, Bavaria, Germany has an average annual maximum temperature of 15°C (59°F), ranging from 4°C (39°F) in January to 26°C (79°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

With significant temperature fluctuations, Altdorf enjoys distinct seasons year-round. Nighttime lows 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 Altdorf by month:

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 237 hours of sunshine.

The chart below shows the average temperature throughout the year:

Altdorf's average annual maximum temperature is 15°C (59°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

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 Altdorf, January is the coolest month, with average highs of 4°C (39°F) and humidity around 83%, considered very high. In July, the warmest month, temperatures average 26°C (79°F) with 73% 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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Altdorf this rarely lasts long on the ground.

For more on Altdorf's weather, including monthly rainfall, sunshine hours, and humidity, visit our Altdorf climate page.