| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -0.7° | -5.5° | 46.7mm | 15.7 | 4 |
| February | 0° | -4.7° | 38.3mm | 15.9 | 5 |
| March | 4.7° | -2.7° | 41mm | 14.1 | 16 |
| April | 13° | 2.7° | 32.1mm | 11 | 56 |
| May | 18.8° | 7.3° | 55.1mm | 12.5 | 71 |
| June | 21.7° | 11.3° | 67.8mm | 13 | 74 |
| July | 24.2° | 13.7° | 83mm | 12.6 | 75 |
| August | 23.6° | 12.6° | 77.1mm | 12.8 | 74 |
| September | 17.9° | 8.4° | 44.2mm | 9.5 | 74 |
| October | 11.2° | 4.3° | 63.5mm | 13.7 | 44 |
| November | 4.4° | 0.2° | 47.2mm | 15.5 | 17 |
| December | 0.4° | -3.8° | 40.8mm | 15.8 | 6 |
January in Kaunas averages a daily high of -0.7°C with nights around -5.5°C. Expect roughly 15.7 wet days totalling 46.7mm. A hard month to visit for comfort alone.
February in Kaunas averages a daily high of 0°C with nights around -4.7°C. Expect roughly 15.9 wet days totalling 38.3mm. A hard month to visit for comfort alone.
March in Kaunas averages a daily high of 4.7°C with nights around -2.7°C. Expect roughly 14.1 wet days totalling 41mm. A hard month to visit for comfort alone.
April in Kaunas averages a daily high of 13°C with nights around 2.7°C. Expect roughly 11 wet days totalling 32.1mm. Generally workable, with some weather to plan around.
May in Kaunas averages a daily high of 18.8°C with nights around 7.3°C. Expect roughly 12.5 wet days totalling 55.1mm. Generally workable, with some weather to plan around.
June in Kaunas averages a daily high of 21.7°C with nights around 11.3°C. Expect roughly 13 wet days totalling 67.8mm. Generally workable, with some weather to plan around.
July in Kaunas averages a daily high of 24.2°C with nights around 13.7°C. Expect roughly 12.6 wet days totalling 83mm. Comfortable conditions for being outdoors all day.
August in Kaunas averages a daily high of 23.6°C with nights around 12.6°C. Expect roughly 12.8 wet days totalling 77.1mm. Generally workable, with some weather to plan around.
September in Kaunas averages a daily high of 17.9°C with nights around 8.4°C. Expect roughly 9.5 wet days totalling 44.2mm. Generally workable, with some weather to plan around.
October in Kaunas averages a daily high of 11.2°C with nights around 4.3°C. Expect roughly 13.7 wet days totalling 63.5mm. Demanding conditions — pack for it and plan indoor options.
November in Kaunas averages a daily high of 4.4°C with nights around 0.2°C. Expect roughly 15.5 wet days totalling 47.2mm. A hard month to visit for comfort alone.
December in Kaunas averages a daily high of 0.4°C with nights around -3.8°C. Expect roughly 15.8 wet days totalling 40.8mm. 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. Kaunas peaks at 75.
Based on 30 years of records, May–September scores highest for comfort in Kaunas, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 24.2°C.
July is the wettest, averaging 83mm of rain across roughly 12.6 wet days.
January is the coolest month, with average daily highs around -0.7°C.