November is Berlin's grey month: persistent fog banks often hold the city in dim light for days. Sunshine duration drops to an annual low of around 50 hours. Flu waves correlate with people retreating indoors. Historically November was associated with the first sustained frost, but this has increasingly failed to materialise in Berlin since the 1990s. Climate change has pushed the start of winter in the Berlin area back by an average of 3 weeks.
In November 2022, the sun did not shine at all on 10 days in Berlin, and the total sunshine duration was just 34 hours, only 32 % of the long-term average of 50 hours.
This page compares the daily measured values of the current year against the average of the last ten years, the so-called 10-year mean. The deviation values in the KPI cards show directly whether the current month is warmer, sunnier, wetter, or windier than usual. The reference data comes from Open-Meteo's ERA5 weather archive and includes daily measured maximum and minimum temperatures, sunshine hours, precipitation totals, and wind speeds.
A ten-year average is short enough to reflect current climate trends, yet long enough to statistically balance out individual extreme years. The World Meteorological Organization (WMO) recommends 30-year normals as the official climate reference, our 10-year mean is deliberately more present-focused and therefore shows the climate change of the most recent decade more clearly.
The daily data for the current year comes directly from Open-Meteo in real time. The reference mean is calculated from actual measured values of the last 10 years, no statistical model, but real historical archive data. The basis is ECMWF's ERA5 reanalysis dataset.
The deviation shows the difference between the current monthly average and the 10-year reference value for the same month. A value of +2.3 °C means: the current month is on average 2.3 degrees warmer than the average of the last 10 years.
Weather review pages are available for over 100 cities in Germany, Austria, and Switzerland. Choose your city from the overview page or use the weather comparison tool on the homepage for custom periods.