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Central North Sea
ERA5 reanalysis 2015-2024, 10 years
Roughest in Feb
73%
Week 5 · 3.4 m
Calmest in Jul
4%
Week 29 · 1.1 m
Week by week
Days above 2.5 m
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Rough end of the range — At the same height a long swell is a slow roll and a short chop is a hammering. Anything under about 6 seconds is chop.
Typical wave height
2.1 m
Wave period
6.7 s
Mean wind
39 km/h
Air temperature
10°C