Bratsk, Russia Climate
The warmest month is July, with an average high of 24°C; the coldest is January, with an average low of -25°C. A normal year brings 513 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 25
- Normal high
- 9°C
- Normal low
- 1°C
- Reanalysis high
- 21°Cin 1997
- Reanalysis low
- -4°Cin 1998
- Chance of a wet day
- 40%
- Daylight
- 12 h 02 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | -18°C | -25°C | 0°C (2002) | -52°C (2000) | 22 mm | 6.2 |
| February | -14°C | -22°C | 0°C (2004) | -53°C (2006) | 20 mm | 5.7 |
| March | -6°C | -14°C | 6°C (1993) | -35°C (1998) | 22 mm | 6.2 |
| April | 4°C | -5°C | 24°C (2020) | -22°C (1993) | 30 mm | 9.0 |
| May | 13°C | 2°C | 29°C (1999) | -8°C (2001) | 56 mm | 12.4 |
| June | 21°C | 10°C | 33°C (1991) | -4°C (1992) | 69 mm | 12.0 |
| July | 24°C | 14°C | 36°C (2002) | 6°C (2018) | 71 mm | 12.4 |
| August | 22°C | 11°C | 36°C (2002) | -1°C (2017) | 68 mm | 12.4 |
| September | 13°C | 3°C | 28°C (2007) | -6°C (2013) | 57 mm | 12.0 |
| October | 3°C | -4°C | 17°C (2010) | -23°C (2009) | 37 mm | 12.4 |
| November | -9°C | -15°C | 6°C (2013) | -39°C (2003) | 33 mm | 12.0 |
| December | -17°C | -24°C | 0°C (2013) | -51°C (2008) | 28 mm | 9.3 |
| Year | 3°C | -6°C | 513 mm | 122 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
513 mm in a normal year, most in July.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Bratsk.
Days with a mean dew point of 18°C or more are rare here in every month.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | -22°C | 99% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | -18°C | 99% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | -10°C | 98% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | -4°C | 82% | 100% | 0% | 0% | 0% | 0% | 0% |
| May | 2°C | 71% | 99% | 1% | 0% | 0% | 0% | 0% |
| June | 9°C | 69% | 79% | 17% | 4% | 0% | 0% | 0% |
| July | 12°C | 68% | 55% | 35% | 10% | 0% | 0% | 0% |
| August | 10°C | 70% | 83% | 16% | 1% | 0% | 0% | 0% |
| September | 3°C | 77% | 99% | 1% | 0% | 0% | 0% | 0% |
| October | -4°C | 83% | 100% | 0% | 0% | 0% | 0% | 0% |
| November | -13°C | 93% | 100% | 0% | 0% | 0% | 0% | 0% |
| December | -20°C | 99% | 100% | 0% | 0% | 0% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is February, with the sky 59 percent covered on average; the cloudiest is October, at 79 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is April, averaging 10.8 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 19, with 17 h 40 min of daylight; the shortest is Dec 19, with 6 h 55 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Bratsk in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.