Siegen Temperature by Month
Siegen in North Rhine-Westphalia, Germany sees significant seasonal temperature differences, with daytime highs between 4°C (39°F) in January and 23°C (73°F) in July, averaging 13°C (55°F) annually. Explore the full monthly breakdown below.
Siegen Monthly Temperatures
Depending on the time of the year, temperatures range from comfortable to cold in Siegen. At night, minimum temperatures range from 13°C (55°F) in July to -2°C (28°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Siegen 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 210 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Siegen 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.
very warm
warm
pleasant
moderate
cold
very cold
Siegen vs World: Temperature Compared
Siegen's average annual maximum temperature is 13°C (55°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.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
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.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Siegen's weather — including monthly rainfall, sunshine hours, and humidity — visit our Siegen climate page.
