| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -4.2° | -9.8° | 46.4mm | 19.4 | 0 |
| February | -3.5° | -10.3° | 36.8mm | 16.2 | 0 |
| March | 2.1° | -7° | 34.7mm | 13 | 6 |
| April | 10° | -0.6° | 37.8mm | 12.1 | 40 |
| May | 16.7° | 4.4° | 55.2mm | 11.6 | 66 |
| June | 20.9° | 8.8° | 68.9mm | 13.5 | 73 |
| July | 23.2° | 11.9° | 82.5mm | 13 | 74 |
| August | 21.6° | 10.3° | 80.9mm | 13.5 | 73 |
| September | 16° | 6.4° | 56.8mm | 12.8 | 62 |
| October | 8.3° | 1.8° | 65.7mm | 16.3 | 32 |
| November | 1.6° | -2.7° | 61.1mm | 17.9 | 8 |
| December | -2° | -6.8° | 56.4mm | 20.6 | 2 |
January in Gatchina averages a daily high of -4.2°C with nights around -9.8°C. Expect roughly 19.4 wet days totalling 46.4mm. A hard month to visit for comfort alone.
February in Gatchina averages a daily high of -3.5°C with nights around -10.3°C. Expect roughly 16.2 wet days totalling 36.8mm. A hard month to visit for comfort alone.
March in Gatchina averages a daily high of 2.1°C with nights around -7°C. Expect roughly 13 wet days totalling 34.7mm. A hard month to visit for comfort alone.
April in Gatchina averages a daily high of 10°C with nights around -0.6°C. Expect roughly 12.1 wet days totalling 37.8mm. Demanding conditions — pack for it and plan indoor options.
May in Gatchina averages a daily high of 16.7°C with nights around 4.4°C. Expect roughly 11.6 wet days totalling 55.2mm. Generally workable, with some weather to plan around.
June in Gatchina averages a daily high of 20.9°C with nights around 8.8°C. Expect roughly 13.5 wet days totalling 68.9mm. Generally workable, with some weather to plan around.
July in Gatchina averages a daily high of 23.2°C with nights around 11.9°C. Expect roughly 13 wet days totalling 82.5mm. Generally workable, with some weather to plan around.
August in Gatchina averages a daily high of 21.6°C with nights around 10.3°C. Expect roughly 13.5 wet days totalling 80.9mm. Generally workable, with some weather to plan around.
September in Gatchina averages a daily high of 16°C with nights around 6.4°C. Expect roughly 12.8 wet days totalling 56.8mm. Generally workable, with some weather to plan around.
October in Gatchina averages a daily high of 8.3°C with nights around 1.8°C. Expect roughly 16.3 wet days totalling 65.7mm. A hard month to visit for comfort alone.
November in Gatchina averages a daily high of 1.6°C with nights around -2.7°C. Expect roughly 17.9 wet days totalling 61.1mm. A hard month to visit for comfort alone.
December in Gatchina averages a daily high of -2°C with nights around -6.8°C. Expect roughly 20.6 wet days totalling 56.4mm. 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. Gatchina peaks at 74.
Based on 30 years of records, May–August scores highest for comfort in Gatchina, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 23.2°C.
July is the wettest, averaging 82.5mm of rain across roughly 13 wet days.
January is the coolest month, with average daily highs around -4.2°C.