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Sea temperature in Poland

Live water temperatures and swimming conditions across 59 beaches on the Poland coast.

Best time to swim in Poland

The sea in Poland peaks in August, when the water averages around 19°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 7°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.

Poland sea temperature history

Long-term climatology for Poland shows an annual mean sea temperature of 10°C, ranging from 2°C in winter to 19°C at the summer peak.

The seasonal swing is roughly 17°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 Poland, 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
3°C
Apr
5°C
May
9°C
Jun
14°C
Jul
18°C
Aug
19°C
Sep
16°C
Oct
12°C
Nov
8°C
Dec
5°C

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

Poland sea temperature: frequently asked questions

What is the warmest month to swim in Poland?

August is the warmest month in Poland, when the sea averages about 19°C. Late-season warmth often persists a few weeks after peak.

When is the sea coldest in Poland?

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

When can you swim in Poland without a wetsuit?

The sea in Poland 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 Poland?

Outside peak summer the water in Poland drops toward 7°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 Poland?

The long-term annual mean sea temperature in Poland is about 10°C, based on multi-decadal climatology of the surrounding waters.

How do I check the current sea temperature in Poland?

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

Poland sea temperature by month

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

Monthly average sea temperature in Poland
MonthAverage sea
January3.0°C
February2.0°C
March3.0°C
April5.0°C
May9.0°C
June14.0°C
July18.0°C
August ⭐19.0°C
September16.0°C
October12.0°C
November8.0°C
December5.0°C

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

Warmest beaches in Poland right now

BeachRegionSea
Darłówko BeachWest Pomeranian8.7°C
Krynica MorskaPomeranian8.7°C
Wladyslawowo BeachHel Peninsula8.7°C
MiędzyzdrojePomerania8.6°C
Dziwnów BeachWest Pomeranian8.6°C
Sztutowo BeachPomeranian8.6°C
Górki WschodniePomeranian8.6°C
Karwieńskie Błota BeachPomeranian8.6°C
Miedzywodzie BeachWest Pomerania8.6°C
Gdynia OrłowoPomerania8.5°C
Mikoszewo BeachPomeranian8.5°C
Gdynia OrlowoTricity8.5°C
Rogowo BeachWest Pomerania8.5°C
Pogorzelica BeachWest Pomeranian8.4°C
Stilo BeachPomeranian8.4°C
Jastarnia BeachHel Peninsula8.4°C
Jurata BeachHel Peninsula8.4°C
Sianozety BeachWest Pomerania8.4°C
Swinoujscie BeachWest Pomerania8.4°C
Białogóra BeachPomeranian8.3°C
Niechorze BeachWest Pomeranian8.3°C
Jantar BeachPomeranian8.3°C
Gdynia SródmiescieTricity8.3°C
Sarbinowo BeachWest Pomeranian8.2°C
Dzwirzyno BeachWest Pomerania8.2°C
Międzywodzie BeachWest Pomeranian8.1°C
Gdansk JelitkowoTricity8.1°C
Trzesacz BeachWest Pomerania8.1°C
Dźwirzyno BeachWest Pomeranian8.0°C
Mrzeżyno BeachWest Pomeranian8.0°C
Rogowo BeachWest Pomeranian7.9°C
Lubiatowo BeachPomeranian7.9°C
Darlowko BeachWest Pomerania7.9°C
Gdańsk BrzeźnoPomerania7.8°C
Kołobrzeg BeachWest Pomeranian7.8°C
Stegna BeachPomeranian7.8°C
Gdansk StogiTricity7.8°C
Władysławowo BeachPomeranian7.7°C
Chałupy BeachPomeranian7.7°C
Leba BeachPomerania7.7°C
Rowy BeachPomerania7.7°C
Ustka BeachPomerania7.7°C
ŁebaPomerania7.6°C
Kuznica BeachHel Peninsula7.6°C
Mielno BeachWest Pomerania7.6°C
Pobierowo BeachWest Pomerania7.6°C
Sopot BeachPomerania7.5°C
Hel BeachPomerania7.5°C
Unieście BeachWest Pomeranian7.5°C
Karwia BeachPomerania7.5°C
Debki BeachPomerania7.5°C
Bialogora BeachPomerania7.5°C
Lukecin BeachWest Pomerania7.5°C
Kolobrzeg BeachWest Pomerania7.5°C
Rewal BeachWest Pomerania7.5°C
Dziwnówek BeachWest Pomeranian7.4°C
Choczewo BeachPomeranian7.4°C
Chalupy BeachHel Peninsula7.4°C
Ustronie MorskieWest Pomerania7.4°C

Sea temperature in Poland — FAQ

How warm is the sea in Poland in November?

The sea off Poland averages about 8.0°C in November, based on long-term monthly averages for this coast.

When is the best time to swim in Poland?

Poland is warmest in August (around 19.0°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 Poland?

Across all twelve months, the sea in Poland averages about 9.5°C.

Do you need a wetsuit to swim in Poland?

The sea in Poland stays below 22°C even at its warmest (~19.0°C in August), so a 3/2mm or thicker wetsuit is recommended for longer swims year-round.