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Central Baltic

ERA5 reanalysis 2015-2024, 10 years

Roughest in Jan

44%

Week 1 · 2.4 m

Calmest in Jul

0%

Week 29 · 0.8 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

1.4 m

Wave period

5.0 s

Mean wind

36 km/h

Air temperature

9°C

Sailings that cross this water