The best time to visit Gdańsk is June through September, when average highs climb into the comfortable low twenties and long Baltic daylight lights up the Long Market. June sits at a 21.7 °C average high with 12 rain days, while August reaches 23 °C with 11 rain days, making these months the sweet spot for warmth and sunshine. July and August fall in peak season, with school-holiday crowds packing the Old Town and the beaches. Winter is the quiet low season, cold and dim with average highs near 2.9 °C in January and just a few hours of sunshine a day.
Best months JuneJulyAugustSeptember
Gdańsk month by month
Average highs and lows (°C), 2016–2025. Highlighted bars are the best months.
| Month | High | Low | Rain days | Sun / day |
|---|---|---|---|---|
| January | 2.9 °C | -1 °C | 13 | 2.9 h |
| February | 4.3 °C | -0.8 °C | 11 | 5.2 h |
| March | 7.7 °C | 0.7 °C | 10 | 7.2 h |
| April | 11.9 °C | 4 °C | 9 | 10.1 h |
| May | 16.6 °C | 8.5 °C | 11 | 12.2 h |
| June | 21.7 °C | 13.5 °C | 12 | 13.2 h |
| July | 22.4 °C | 15.2 °C | 14 | 12.3 h |
| August | 23 °C | 15.4 °C | 11 | 11.3 h |
| September | 19.3 °C | 12.4 °C | 10 | 9.1 h |
| October | 13.6 °C | 7.9 °C | 12 | 6 h |
| November | 7.5 °C | 3.4 °C | 11 | 3.4 h |
| December | 4.3 °C | 0.8 °C | 12 | 2.6 h |
How the months are picked.A month qualifies when its average high sits in the comfortable 20–28 °C band (scored down towards 9 °C and 37 °C), rain days are few and sunshine hours are high — at least 78 % of the city's best-scoring month. July and August are then set aside as peak season (school-holiday crowds and prices) whenever at least three other months qualify; where summer is the only comfortable window they stay. Figures are ten-year averages (2016-01-01 to 2025-12-31) from ERA5 reanalysis data via Open-Meteo (CC BY 4.0) for the city centre coordinates.
When to go, and what to expect
Spring (Mar–May)
Great for mild sightseeing before the summer rush, though the sea stays cold.
Summer (Jun–Aug)
Best for beach days and festivals; go in June to dodge the heaviest crowds.
Autumn (Sep–Nov)
September is a top pick — warm, calmer and golden; later months turn grey.
Winter (Dec–Feb)
For festive markets and low-key city breaks; not for daylight or warmth.
Notable events
- Late July to August
- St. Dominic's Fair (Jarmark św. Dominika)
- December
- Gdańsk Christmas Market
- June
- St. John's Night (Noc Świętojańska / Wianki)
- Late summer (late July–August)
- Gdańsk Shakespeare Festival
Frequently asked
Is August too hot in Gdańsk?
No. August average highs reach 23 °C, comfortably warm rather than sweltering, though it also sees 11 rain days, so pack a light layer.
What is the rainiest month?
July records the most rain days at 14, with June close behind at 12. Even so, summer offers long daylight — July averages 12.3 hours of sunshine a day.
Is winter worth visiting?
Only if you want the Christmas market and quiet streets. January highs sit at just 2.9 °C with only 2.9 hours of sunshine a day, so it's cold and dim.
Know when to go? Now decide where to stay — our Gdańsk area guide →
Areas of Gdańsk
Best time to visit near here
Sources
- Open-Meteo historical weather API — monthly climate normals, 2016–2025 (CC BY 4.0)
- ERA5 reanalysis (ECMWF / Copernicus) — the underlying temperature, precipitation and sunshine data
- ReasonStay methodology — how the best months are computed and checked
An independent guide to Gdańsk — honest, verified, no invented data. Climate figures: ERA5 via Open-Meteo, 2016–2025 averages; the best months are computed from them, not opinion.