Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster Sea Temperature and Wetsuit Guide

Issued: 12 pm 03 Nov 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
10.4°C
0.6° 

Valnäs - Nord Koster surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Valnäs - Nord Koster sea temperature is 10.4 °C

(Slightly warmer than usual (0.6° above average))

Mean: 9.8 °C
Range: 7.3 °C to 11.3 °C
Statistics for 03 Nov (1981–2005)
  • neoprene wetsuit hood for warmth and a watertight seal in cold sea temperatures
  • neoprene gloves for warmth, grip, and protection in cold temperatures
  • wetsuit boots for warmth, grip, and protection in cold temperatures

Today, many surfers would wear a winter wetsuit, a neoprene hood, gloves and boots.

The water temperature (10 °C) at Valnäs - Nord Koster is quite cold. Despite the sun, windchill of 6 °C means that surfers will need plenty of neoprene. Wear a quality winter wetsuit, a neoprene hood, gloves and boots. A windchill factor of (6 °C).

Sweden Sea Water Temperature

Map of current Sweden
Surface Water Temperatures

(based on measurements from oceanographic satellites)
Sweden Water Temperature Anomaly

Map of current Sweden
Sea Water Temperature Anomalies

(compared with long term averages
at this time of year)

click thumbnails to expand

Below is a graph of Historical Sea Surface Temperature for Valnäs - Nord Koster. This has been derived from analysis of two decades of oceanographic satellite measurements of nearby open water. We have calculated the average water temperature variation around the year as well as the extremes that have been observed on each date.

Valnäs - Nord Koster Water Temperature Graph

All of the graphs for the surf breaks presented on Surf-Forecast.com are on the same scale to enable comparison between locations around the world.

Actual sea surface water temperatures close to shore at Valnäs - Nord Koster can vary by several degrees compared with these open water averages. This is especially true after heavy rain, close to river mouths or after long periods of strong offshore winds. Offshore winds cause colder deep water to replace surface water that has been warmed by the sun. Air temperature, wind-chill and sunshine should also be considered before deciding on the kind of wetsuit needed to stay warm when surfing at Valnäs - Nord Koster. Refer to our detailed weather forecasts for this information.

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