Weather in Gdańsk in March

The month to avoid. March is the month most people should skip in Gdańsk. Highs sit at 4.9 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

March ranks 9 of 12 in Gdańsk: past the worst of the year but short of August, which is the month to book if the dates are open.

Rain on 10 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Layers, and a genuinely waterproof outer — at 4.9 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

Averages flatten a month, and this one hides a few things: 12 nights fall below freezing; the day barely swings — 4.6 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest March day reached 15.8 °C and the coldest night fell to -10.3 °C.

March is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest March on record still delivered 74 mm against 13 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 44 mm average is a reasonable planning figure, not a promise.

Wind sits around 16.8 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 86%, which at 4.9 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How March sits in the year

The month is on the way up: 3.1 °C warmer than February, and April adds another 4.9 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in March

11.7 hours of daylight, gaining 2.2 hours across the month. That is between Gdańsk's extremes of 17.2 and 7.4 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 3 °C in March — 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

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

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

March in Gdańsk versus nearby

If Gdańsk is one option among several, the nearby comparison is worth making. Warsaw is a better bet in March — 2.4 °C warmer, 1 day less rain. Szczecin is close enough to be a coin toss — within a degree on temperature, the same number of rain days.

So: March is a compromise. August is 46 points better and is what Gdańsk is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Gdańsk

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