SwimTemperature logoSwimTemperature
Open live map
All countries

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
Jurata BeachHel Peninsula16.7°C
Chałupy BeachPomeranian16.6°C
Stegna BeachPomeranian16.6°C
Gdansk StogiTricity16.5°C
Leba BeachPomerania16.5°C
Swinoujscie BeachWest Pomerania16.5°C
Kołobrzeg BeachWest Pomeranian16.4°C
Międzywodzie BeachWest Pomeranian16.4°C
Lubiatowo BeachPomeranian16.4°C
Choczewo BeachPomeranian16.4°C
Karwia BeachPomerania16.4°C
Lukecin BeachWest Pomerania16.4°C
Mielno BeachWest Pomerania16.4°C
Kolobrzeg BeachWest Pomerania16.4°C
Bialogora BeachPomerania16.3°C
Sarbinowo BeachWest Pomeranian16.2°C
Dziwnów BeachWest Pomeranian16.2°C
Jantar BeachPomeranian16.2°C
Gdynia SródmiescieTricity16.2°C
Gdansk JelitkowoTricity16.2°C
Rowy BeachPomerania16.2°C
Dzwirzyno BeachWest Pomerania16.2°C
Rewal BeachWest Pomerania16.2°C
Darłówko BeachWest Pomeranian16.1°C
Sopot BeachPomerania16.0°C
Gdańsk BrzeźnoPomerania16.0°C
Dziwnówek BeachWest Pomeranian16.0°C
Trzesacz BeachWest Pomerania16.0°C
Pobierowo BeachWest Pomerania16.0°C
Hel BeachPomerania15.9°C
Unieście BeachWest Pomeranian15.9°C
Mrzeżyno BeachWest Pomeranian15.9°C
Wladyslawowo BeachHel Peninsula15.9°C
Debki BeachPomerania15.9°C
Miedzywodzie BeachWest Pomerania15.9°C
ŁebaPomerania15.8°C
Niechorze BeachWest Pomeranian15.8°C
Kuznica BeachHel Peninsula15.8°C
Sianozety BeachWest Pomerania15.8°C
MiędzyzdrojePomerania15.7°C
Pogorzelica BeachWest Pomeranian15.7°C
Krynica MorskaPomeranian15.7°C
Gdynia OrlowoTricity15.7°C
Chalupy BeachHel Peninsula15.7°C
Ustronie MorskieWest Pomerania15.7°C
Stilo BeachPomeranian15.6°C
Górki WschodniePomeranian15.6°C
Jastarnia BeachHel Peninsula15.6°C
Darlowko BeachWest Pomerania15.6°C
Rogowo BeachWest Pomerania15.6°C
Sztutowo BeachPomeranian15.5°C
Ustka BeachPomerania15.5°C
Gdynia OrłowoPomerania15.4°C
Białogóra BeachPomeranian15.4°C
Dźwirzyno BeachWest Pomeranian15.4°C
Mikoszewo BeachPomeranian15.4°C
Karwieńskie Błota BeachPomeranian15.4°C
Władysławowo BeachPomeranian15.3°C
Rogowo BeachWest Pomeranian15.3°C

Sea temperature in Poland — FAQ

How warm is the sea in Poland in September?

The sea off Poland averages about 16.0°C in September, 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.