Nynäshamn Sea Temperature

(Today) 2025

13.4°C / 56.1°F

The water will feel cool (fresh). Probably too cold for all but seasoned swimmers. We'd recommend a 4mm or 5mm wetsuit if you want to stay in the water.

Current weather

14°C / 58°F
(few clouds)
Partly cloudy
Wind
10 mph
Humidity
74%

The measurements for the water temperature in Nynäshamn, Stockholm are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Nynäshamn water temperature derived from many years of historical sea surface temperature data.

Nynäshamn average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Nynäshamn
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -1.1 -1.4 -0.5 0.7 4.1 10 14.5 16 10.2 6.7 5.3 2.2
Max °C 4.7 3.4 2.7 5.6 11.5 18.2 21.7 21.4 19.5 13.1 8.9 7.5
Min °F 32.3 31.4 32.5 35.2 42.3 53.3 61 63 54 46.6 43 38
Max °F 38.1 36.2 35.6 40.1 49.7 61.5 68.2 68.4 63.3 53 46.6 43.3

The warmest water temperature is in August with an average around 65.7°F / 18.7°C. The coldest month is February with an average water temperature of 33.8°F / 1.0°C.