Finland Sea Temperature by Month

12-month annual sea surface temperature curves across all 5 surveyed coastlines in Finland. Data queried directly from NOAA OISST v2.1 1991–2020 0.25° grid climatology.

Notice: 30-year historical climatological monthly mean (1991–2020), not a live single-day sensor forecast.

Coastlines & Monthly Curves in Finland

Yyteri Beach

Pori · Golden Sand

Peak August: 16.7°C (Jun: 9.9°C · Sep: 13.6°C)

Nallikari Beach

Oulu, North Ostrobothnia · Golden Sand

Peak August: 15.5°C (Jun: 9.5°C · Sep: 12.3°C)

Kalajoki Hiekkasärkät

Kalajoki, Ostrobothnia · Golden Sand

Peak August: 15.3°C (Jun: 8°C · Sep: 12.2°C)

Hietaniemi Beach

Helsinki · Golden Sand

Peak August: 17.2°C (Jun: 11.4°C · Sep: 14.4°C)

Plagen Beach

Hanko · Golden Sand

Peak August: 17.2°C (Jun: 11.3°C · Sep: 14.5°C)