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Sea temperature in Sweden

Live water temperatures and swimming conditions across 65 beaches on the Sweden coast.

Best time to swim in Sweden

The sea in Sweden peaks in August, when the water averages around 18°C.

On average, 0 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.

Outside peak season the water drops toward 6°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.

The coldest month is typically February at around 2°C, when cold-water swimmers dominate the coast.

Sweden sea temperature history

Long-term climatology for Sweden shows an annual mean sea temperature of 9°C, ranging from 2°C in winter to 18°C at the summer peak.

The seasonal swing is roughly 16°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.

Recent decades have trended slightly warmer at Sweden, in line with regional sea-surface temperature records for the wider basin.

Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.

Jan
3°C
Feb
2°C
Mar
2°C
Apr
4°C
May
8°C
Jun
13°C
Jul
17°C
Aug
18°C
Sep
15°C
Oct
11°C
Nov
7°C
Dec
5°C

Values are area averages; individual beaches vary by exposure and depth.

Sweden sea temperature: frequently asked questions

What is the warmest month to swim in Sweden?

August is the warmest month in Sweden, when the sea averages about 18°C. Late-season warmth often persists a few weeks after peak.

When is the sea coldest in Sweden?

The coldest month in Sweden is typically February, when the water averages around 2°C. Cold-water swimmers and surfers dominate this period.

When can you swim in Sweden without a wetsuit?

The sea in Sweden rarely climbs above 20°C, so a wetsuit is recommended year-round for anything longer than a quick dip.

Do I need a wetsuit in Sweden?

Outside peak summer the water in Sweden drops toward 6°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable. In peak months most swimmers go without.

What is the average sea temperature in Sweden?

The long-term annual mean sea temperature in Sweden is about 9°C, based on multi-decadal climatology of the surrounding waters.

How do I check the current sea temperature in Sweden?

The live reading at the top of this page shows the current sea temperature in Sweden, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.

Sweden sea temperature by month

Average sea temperatures around Sweden for every month of the year, based on long-term Open-Meteo marine climatology.

Monthly average sea temperature in Sweden
MonthAverage sea
January3.0°C
February2.0°C
March2.0°C
April4.0°C
May8.0°C
June13.0°C
July17.0°C
August ⭐18.0°C
September15.0°C
October11.0°C
November7.0°C
December5.0°C

Monthly figures are modelled climatology averages, not live readings. How accurate is our data?

Coastal regions of Sweden

Region hubs with live sea temperatures, swim conditions and a beach directory.

Skåne
20 beaches
20 tracked beaches in Skåne, Sweden, with live Baltic Sea temperatures.
South Coast
4 beaches
25 tracked beaches in South Coast, Sweden, with live Baltic Sea temperatures.

Warmest beaches in Sweden right now

BeachRegionSea
HellasgårdenStockholm15.7°C
Björnö BeachStockholm15.7°C
Ljugarn BeachGotland15.7°C
Torekov BeachSkane15.6°C
Björkvik BeachStockholm Archipelago15.6°C
Tofta BeachGotland15.6°C
Trouville BeachStockholm15.5°C
Långholmen BeachStockholm15.5°C
Bjorno BeachStockholm Archipelago15.5°C
Lomma BeachSkåne15.4°C
Bjärehalvön BeachSkåne15.4°C
Askim BeachWest Coast15.4°C
SudersandSouth Coast15.3°C
Ystad SaltsjöbadSkåne15.3°C
Pite HavsbadNorrbotten15.3°C
Smådalarö BeachStockholm15.3°C
Apelviken BeachWest Coast15.3°C
Ahus BeachSkane15.3°C
Fårösund BeachGotland15.3°C
FalsterboSouth Coast15.2°C
Ingmarsö BeachStockholm15.2°C
Bastad BeachSkane15.2°C
Böda SandOland15.2°C
Grisslehamn BeachStockholm Archipelago15.2°C
TylösandSouth Coast15.1°C
SkanörSouth Coast15.1°C
SandhammarenSkåne15.1°C
Askrike BeachStockholm15.1°C
Getterön BeachWest Coast15.1°C
Malmö RibbanSkane15.1°C
Byrums RaukarOland15.1°C
NaringsklevHigh Coast15.1°C
Skrea BeachWest Coast15.0°C
Grebbestad BeachWest Coast15.0°C
Sudersand FåröGotland15.0°C
KnäbäckshusenSkåne14.9°C
KlockareängensStockholm14.9°C
Saltö BeachWest Coast14.9°C
Ljunghusen BeachSkane14.9°C
Havsbadet NynashamnStockholm Archipelago14.9°C
MellbystrandHalland14.8°C
SmitingenVästernorrland14.8°C
StorsandVästernorrland14.8°C
MellbystrandWest Coast14.8°C
Ribersborg BeachSkane14.8°C
Kämpinge BeachSkane14.8°C
Trelleborg BeachSkane14.8°C
SmygehukSkåne14.7°C
Hovs HallarSkåne14.7°C
SkummeslovsstrandWest Coast14.7°C
Storsand BeachHigh Coast14.7°C
Sudersand Beach FaroGotland14.7°C
Mölle BeachSkåne14.6°C
Stenshuvud BeachSkåne14.6°C
Löderup BeachSkane14.6°C
Löttorp BeachOland14.6°C
Gronhogen BeachOland14.6°C
Ekstakusten BeachGotland14.6°C
Norsta Aurar BeachGotland14.6°C
Smogen BeachWest Coast14.5°C
Arild BeachSkåne14.4°C
LyckesandKalmar14.4°C
Sibbarp BeachSkane14.4°C
Sandhamn TrouvilleStockholm Archipelago14.4°C
Näset BeachWest Coast14.3°C

Sea temperature in Sweden — FAQ

How warm is the sea in Sweden in September?

The sea off Sweden averages about 15.0°C in September, based on long-term monthly averages for this coast.

When is the best time to swim in Sweden?

Sweden is warmest in August (around 18.0°C) and coldest in February (around 2.0°C). There are typically 0 months a year when the water sits above 22°C.

What is the average yearly sea temperature in Sweden?

Across all twelve months, the sea in Sweden averages about 8.8°C.

Do you need a wetsuit to swim in Sweden?

The sea in Sweden stays below 22°C even at its warmest (~18.0°C in August), so a 3/2mm or thicker wetsuit is recommended for longer swims year-round.