The best time to visit Poland
The best time to visit Poland for warm, sunny weather is June to September, when its destinations average a Sunshine Score of 72/100 with daytime highs around 22°C / 72°F. May is a quieter shoulder-season alternative with still-reliable sun. The sea is swimmable (21°C+) about 1 month a year, warmest in August at 21°C.
Poland by month, averaged across 11 destinations from long-term climate normals — the best stretch is highlighted.
| Month | Sunshine Score | Avg day high | Rain | Sea | For a trip |
|---|---|---|---|---|---|
| January | 0 | -1° / 30°F | 48 mm | 2° | Poor |
| February | 0 | 1° / 34°F | 39 mm | 3° | Poor |
| March | 0 | 6° / 43°F | 43 mm | 4° | Poor |
| April | 33 | 13° / 55°F | 41 mm | 7° | Mixed |
| May | 61 | 18° / 64°F | 74 mm | 12° | Very good |
| June | 72 | 22° / 72°F | 73 mm | 18° | Excellent |
| July | 71 | 24° / 75°F | 86 mm | 20° | Excellent |
| August | 75 | 24° / 75°F | 66 mm | 21° | Excellent |
| September | 70 | 19° / 66°F | 59 mm | 19° | Excellent |
| October | 28 | 12° / 54°F | 53 mm | 14° | Mixed |
| November | 0 | 6° / 43°F | 47 mm | 9° | Poor |
| December | 0 | 1° / 34°F | 46 mm | 5° | Poor |
When to go — and when to think twice
Best overall: June to September — Poland's warmest, most reliable stretch (Sunshine Score 72/100, ~22°C / 72°F days). Shoulder season: May — quieter, still sunny. Hottest: July, ~24°C / 75°F. Wettest: July (86 mm) — pack for showers.
Where to base yourself for sunshine: Warsaw (1,997 h/yr), Szczecin(Glewice) (1,679 h/yr), Gdańsk (1,678 h/yr). See every Poland destination with a full climate card, or where it's sunny worldwide, month by month.