| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -15.9° | -23.5° | 16.5mm | 14.9 | 0 |
| February | -11.1° | -21° | 12mm | 11 | 8 |
| March | -2° | -13.4° | 12.6mm | 9.1 | 12 |
| April | 6.5° | -3.7° | 16.1mm | 9.3 | 30 |
| May | 14.2° | 2.6° | 32.9mm | 11.1 | 59 |
| June | 21.5° | 10° | 52.4mm | 10.9 | 78 |
| July | 24.2° | 13.6° | 61.5mm | 11.5 | 77 |
| August | 21.3° | 11.2° | 56.6mm | 11.9 | 76 |
| September | 13.3° | 4.6° | 40.2mm | 12.5 | 54 |
| October | 4.6° | -2.2° | 23.5mm | 13.1 | 18 |
| November | -5.5° | -12.3° | 24.8mm | 16.2 | 0 |
| December | -13.2° | -20.1° | 21.5mm | 17.8 | 0 |
January in Bratsk averages a daily high of -15.9°C with nights around -23.5°C. Expect roughly 14.9 wet days totalling 16.5mm. A hard month to visit for comfort alone.
February in Bratsk averages a daily high of -11.1°C with nights around -21°C. Expect roughly 11 wet days totalling 12mm. A hard month to visit for comfort alone.
March in Bratsk averages a daily high of -2°C with nights around -13.4°C. Expect roughly 9.1 wet days totalling 12.6mm. A hard month to visit for comfort alone.
April in Bratsk averages a daily high of 6.5°C with nights around -3.7°C. Expect roughly 9.3 wet days totalling 16.1mm. A hard month to visit for comfort alone.
May in Bratsk averages a daily high of 14.2°C with nights around 2.6°C. Expect roughly 11.1 wet days totalling 32.9mm. Generally workable, with some weather to plan around.
June in Bratsk averages a daily high of 21.5°C with nights around 10°C. Expect roughly 10.9 wet days totalling 52.4mm. Comfortable conditions for being outdoors all day.
July in Bratsk averages a daily high of 24.2°C with nights around 13.6°C. Expect roughly 11.5 wet days totalling 61.5mm. Comfortable conditions for being outdoors all day.
August in Bratsk averages a daily high of 21.3°C with nights around 11.2°C. Expect roughly 11.9 wet days totalling 56.6mm. Comfortable conditions for being outdoors all day.
September in Bratsk averages a daily high of 13.3°C with nights around 4.6°C. Expect roughly 12.5 wet days totalling 40.2mm. Demanding conditions — pack for it and plan indoor options.
October in Bratsk averages a daily high of 4.6°C with nights around -2.2°C. Expect roughly 13.1 wet days totalling 23.5mm. A hard month to visit for comfort alone.
November in Bratsk averages a daily high of -5.5°C with nights around -12.3°C. Expect roughly 16.2 wet days totalling 24.8mm. A hard month to visit for comfort alone.
December in Bratsk averages a daily high of -13.2°C with nights around -20.1°C. Expect roughly 17.8 wet days totalling 21.5mm. 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. Bratsk peaks at 78.
Based on 30 years of records, June–August scores highest for comfort in Bratsk, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 24.2°C.
July is the wettest, averaging 61.5mm of rain across roughly 11.5 wet days.
January is the coolest month, with average daily highs around -15.9°C.