Mannheim Temperature by Month

The average annual maximum temperature in Mannheim, Baden-Württemberg, Germany is 16°C (61°F), with daytime highs ranging from 6°C (43°F) in January to 27°C (81°F) in July. This page covers monthly averages, day-night differences, and how Mannheim compares to cities worldwide.

With significant temperature fluctuations, Mannheim enjoys distinct seasons year-round. Nighttime lows range from 15°C (59°F) in July to 0°C (32°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Mannheim 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 237 hours of sunshine.

The chart below shows the average temperature throughout the year:

Mannheim's average annual maximum temperature is 16°C (61°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.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

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.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

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