Weather in Gdańsk in June

A good month. June is a solid month to be in Gdańsk. Highs average 18.5 °C, lows 12.7 °C, and rain falls on 12 days — nothing in the month is working against you.

June ranks 2 of 12 in Gdańsk. Only August scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain on 12 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average June reaches 30 °C; the day barely swings — 5.8 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest June day reached 30.3 °C and the coldest night fell to 6.8 °C, and the wettest single day dropped 27 mm — roughly 47% of the month's rain in one day.

June is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest June on record still delivered 84 mm against 32 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 58 mm average is a reasonable planning figure, not a promise.

Wind is light at 13.2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 78%, high enough to notice on the warm days without dominating them.

How June sits in the year

The month is on the way up: 3.7 °C warmer than May, and July adds another 2.7 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in June

June is at or near the longest days of Gdańsk's year: 17.2 hours of daylight, gaining 0.4 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

Sea temperature

The sea sits at about 13.6 °C in June — too cold to swim without a wetsuit. The sea peaks at 18.8 °C in August and bottoms out at 3 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

June in Gdańsk versus nearby

If Gdańsk is one option among several, the nearby comparison is worth making. Warsaw is close enough to be a coin toss — 4.6 °C warmer, 1 day more rain. Szczecin is close enough to be a coin toss — 2.3 °C warmer, 1 day more rain.

So: June is effectively as good as it gets here — 1 points behind August, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Gdańsk

See all twelve months in Gdańsk, or where else to go in June.