Delmenhorst's winters are chilly and unpredictable, with temperatures often dropping below freezing in January and February, but occasionally rising above 19°C. As the seasons shift towards spring, March brings more moderate temperatures, while April and May usher in warmer days, with highs reaching up to 27°C. Summer months of June, July, and August bring warm temperatures, with highs frequently exceeding 25°C, although not consistently high. Autumn is generally mild, with September and October temperatures similar to those in spring, before cooling down again in November and December.