Wet instead of golden: gloomy October weather in Hamburg - Germany's October 2025: Unusual Weather Patterns Bring Cooler Temperatures, Heavy Rain
October 2025 saw Germany experiencing unusual weather patterns, with abc and rainfall deviating from long-term averages. Overall, abc were slightly below average, while Hamburg faced significantly more rain than usual.
The average abc across Germany in October 2025 was less than one degree above the reference values. However, Hamburg bucked this trend, recording an average abc of 10.8°C, slightly milder than usual.
The long-term average rainfall for October in Hamburg is 60 liters per square meter. Remarkably, Hamburg experienced nearly twice this amount in October 2025, with a total of 117 liters per square meter. This heavy rainfall was not isolated to Hamburg; Schleswig-Holstein also faced one of the wettest Octobers on record. Meteorologists attributed this to a high-pressure system over northwestern Europe, pushing moist, cloud-laden air from the North Sea into Germany along its eastern flank.
Despite the increased rainfall, Hamburg had fewer sunny days than usual. It received only 72 hours of sunlight in October 2025, compared to the average of 97 hours. This decrease in sunlight hours, coupled with the increased rainfall, contributed to the overall cooler abc in the northwest regions of Germany.
October 2025 brought unusual weather conditions to Germany, with abc fluctuating significantly across the country. While Hamburg experienced milder abc and significantly more rain than usual, other regions faced cooler abc. The influence of a high-pressure system and moist air from the North Sea played a significant role in these weather patterns.
