South Coast is a coastal area of Sweden on the Baltic Sea, with 25 tracked beaches. The sea here ranges from about 2°C in the coolest month to 18°C at the summer peak, with roughly 0 months a year sitting above 20°C — the level most swimmers describe as pleasant without a wetsuit. Use the beach list below to check the current sea temperature at each spot before you head out.
South Coast
25 tracked beaches in South Coast, Sweden, with live Baltic Sea temperatures.
Sea
Baltic Sea
Avg sea temp now
15.2°C
Best months
Warmest August
Best time to swim in South Coast
The sea in South Coast 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.
South Coast sea temperature history
Long-term climatology for South Coast 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 South Coast, 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.
South Coast sea temperature: frequently asked questions
What is the warmest month to swim in South Coast?
August is the warmest month in South Coast, when the sea averages about 18°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in South Coast?
The coldest month in South Coast is typically February, when the water averages around 2°C. Cold-water swimmers and surfers dominate this period.
When can you swim in South Coast without a wetsuit?
The sea in South Coast 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 South Coast?
Outside peak summer the water in South Coast 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 South Coast?
The long-term annual mean sea temperature in South Coast is about 9°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in South Coast?
The live reading at the top of this page shows the current sea temperature in South Coast, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Beaches in the South Coast
Ranked by current live sea temperature.
- 1ReynisfjaraVík, Iceland21.2°C
- 2Orre BeachKlepp, Norway15.6°C
- 3Refsnes BeachHa, Norway15.4°C
- 4SudersandFårö, Sweden15.3°C
- 5Bore BeachKlepp, Norway15.3°C
- 6FalsterboFalsterbo, Sweden15.2°C
- 7Hellestø BeachSola, Norway15.2°C
- 8TylösandHalmstad, Sweden15.1°C
- 9SkanörSkanör, Sweden15.1°C
- 10Grimstad BeachGrimstad, Norway15.1°C
- 11Lyngør BeachLyngør, Norway15.1°C
- 12Brusand BeachHa, Norway15.0°C
- 13Ogna BeachOgna, Norway15.0°C
- 14SjøsandenMandal, Norway15.0°C
- 15Godalen BeachStavanger, Norway15.0°C
- 16Mineral Beach MandalMandal, Norway14.9°C
- 17Hamresanden BeachKristiansand, Norway14.9°C
- 18Storesand LarvikLarvik, Norway14.8°C
- 19Stavern BeachStavern, Norway14.7°C
- 20Mølen BeachLarvik, Norway14.6°C
- 21Bystranda KristiansandKristiansand, Norway14.5°C
- 22SolastrandenSola, Norway14.4°C
- 23Sele BeachKlepp, Norway14.4°C
- 24Nevlunghavn BeachLarvik, Norway14.4°C
- 25Ula BeachLarvik, Norway14.4°C
Swimming in the South Coast — FAQ
How warm is the sea in the South Coast in September?
The Baltic Sea off the South Coast averages about 15.0°C in September, based on long-term monthly averages for this coast.
When is the best time to swim in the South Coast?
The South Coast 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 the South Coast?
Across all twelve months, the sea in the South Coast averages about 8.8°C.
Do you need a wetsuit to swim in the South Coast?
The sea in the South Coast 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.
Which beach in the South Coast has the warmest sea right now?
Reynisfjara typically has the warmest sea in September, while Tylösand is the coolest of the featured beaches. Live readings for every beach are listed on this page.