| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 0° | -4.6° | 54.2mm | 17.4 | 5 |
| February | 2.3° | -3° | 41.6mm | 14.7 | 8 |
| March | 6.4° | -1.3° | 35mm | 12.1 | 27 |
| April | 12.7° | 3.4° | 34.6mm | 10.6 | 55 |
| May | 17.7° | 8.4° | 54.7mm | 12.8 | 67 |
| June | 21.1° | 13.1° | 64.8mm | 12.6 | 75 |
| July | 22.8° | 15.3° | 101.6mm | 14.7 | 71 |
| August | 23° | 13.2° | 77.9mm | 14 | 72 |
| September | 18.5° | 10.7° | 65.8mm | 12.3 | 71 |
| October | 12.4° | 5.5° | 63.4mm | 14.9 | 46 |
| November | 6.6° | 2.5° | 60.1mm | 14.8 | 28 |
| December | 3.2° | -0.6° | 56.1mm | 16.8 | 12 |
January in Tczew averages a daily high of 0°C with nights around -4.6°C. Expect roughly 17.4 wet days totalling 54.2mm. A hard month to visit for comfort alone.
February in Tczew averages a daily high of 2.3°C with nights around -3°C. Expect roughly 14.7 wet days totalling 41.6mm. A hard month to visit for comfort alone.
March in Tczew averages a daily high of 6.4°C with nights around -1.3°C. Expect roughly 12.1 wet days totalling 35mm. A hard month to visit for comfort alone.
April in Tczew averages a daily high of 12.7°C with nights around 3.4°C. Expect roughly 10.6 wet days totalling 34.6mm. Generally workable, with some weather to plan around.
May in Tczew averages a daily high of 17.7°C with nights around 8.4°C. Expect roughly 12.8 wet days totalling 54.7mm. Generally workable, with some weather to plan around.
June in Tczew averages a daily high of 21.1°C with nights around 13.1°C. Expect roughly 12.6 wet days totalling 64.8mm. Comfortable conditions for being outdoors all day.
July in Tczew averages a daily high of 22.8°C with nights around 15.3°C. Expect roughly 14.7 wet days totalling 101.6mm. Generally workable, with some weather to plan around.
August in Tczew averages a daily high of 23°C with nights around 13.2°C. Expect roughly 14 wet days totalling 77.9mm. Generally workable, with some weather to plan around.
September in Tczew averages a daily high of 18.5°C with nights around 10.7°C. Expect roughly 12.3 wet days totalling 65.8mm. Generally workable, with some weather to plan around.
October in Tczew averages a daily high of 12.4°C with nights around 5.5°C. Expect roughly 14.9 wet days totalling 63.4mm. Demanding conditions — pack for it and plan indoor options.
November in Tczew averages a daily high of 6.6°C with nights around 2.5°C. Expect roughly 14.8 wet days totalling 60.1mm. A hard month to visit for comfort alone.
December in Tczew averages a daily high of 3.2°C with nights around -0.6°C. Expect roughly 16.8 wet days totalling 56.1mm. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Tczew peaks at 75.
Based on 30 years of records, May–September scores highest for comfort in Tczew, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 23°C.
July is the wettest, averaging 101.6mm of rain across roughly 14.7 wet days.
January is the coolest month, with average daily highs around 0°C.