Hamburg and Bremen are only 120 km apart and both have an oceanic North Sea coastal climate, but Hamburg's more direct maritime exposure makes it slightly wetter and windier. Bremen records around 730 mm of annual precipitation, a touch less than Hamburg's 770 mm, and can be marginally warmer in high summer. The comparison reveals how similar – yet not identical – the two port cities really are.
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The comparison tool above stacks Hamburg and Bremen into the same time window. Pick a month from last year, a quarter from 2020, or a full summer, and both cities are scored on the same four metrics: temperature, sunshine, precipitation, and wind. Aggregation switches between day, week, and month depending on how granular you want the trace.
A side-by-side comparison surfaces differences that a single-city view hides. If Hamburg and Bremen sit in the same climate region, the gaps are small but both cities react similarly to weather patterns. If they sit further apart, coast versus inland or north versus south, regional effects show up directly in the numbers.
Both cities draw from the same dataset: the ECMWF ERA5 reanalysis archive, retrieved via the Open-Meteo archive API. Reanalysis means every available satellite and surface measurement is reconciled retrospectively and placed on a consistent grid. Values for Hamburg and Bremen are therefore directly comparable whether you look at 1970 or 2025.
The comparison is free and ad-free. Every selection sits in the URL so you can share the result as a link or embed it into your own page via the widget. If you want to go deeper, the individual city pages for Hamburg and Bremen are reachable in the block directly below.