Bratsk climate
Bratsk (Irkutsk Oblast, Russia) has a subarctic climate (Köppen Dfc). The average temperature over the year is −1 °C30 °F, and about 525 mm21 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Bratsk climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | −18−1 | −26−15 | −22−8 | 200.8 | 31 |
| Feb | −156 | −23−9 | −19−2 | 180.7 | 28 |
| Mar | −523 | −147 | −915 | 220.9 | 31 |
| Apr | 440 | −425 | 032 | 261.0 | 25 |
| May | 1355 | 338 | 847 | 552.2 | 8 |
| Jun | 2271 | 1254 | 1763 | 752.9 | 0 |
| Jul | 2475 | 1559 | 1967 | 793.1 | 0 |
| Aug | 2170 | 1253 | 1662 | 742.9 | 0 |
| Sep | 1355 | 440 | 847 | 612.4 | 4 |
| Oct | 236 | −425 | −130 | 371.5 | 25 |
| Nov | −817 | −155 | −1211 | 311.2 | 30 |
| Dec | −180 | −25−13 | −21−6 | 271.1 | 31 |
| Year | 2475 | −26−15 | −130 | 52521 | 213 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 99% | 63% | 0.7 | 7:32 |
| Feb | 98% | 63% | 1.6 | 9:28 |
| Mar | 97% | 68% | 3.0 | 11:38 |
| Apr | 79% | 67% | 4.4 | 14:07 |
| May | 70% | 69% | 5.2 | 16:18 |
| Jun | 68% | 64% | 5.8 | 17:37 |
| Jul | 68% | 65% | 5.3 | 17:04 |
| Aug | 70% | 61% | 4.3 | 15:05 |
| Sep | 77% | 69% | 2.8 | 12:38 |
| Oct | 83% | 81% | 1.5 | 10:16 |
| Nov | 93% | 78% | 0.7 | 8:06 |
| Dec | 99% | 66% | 0.5 | 6:57 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Bratsk is like
The warmest month is July, with an average high of 24 °C75 °F and a low of 15 °C59 °F. The coldest is January, when highs average −18 °C−1 °F and lows −26 °C−15 °F. The climate is extremely continental — the average temperature swings by 41.6 °C74.9 °F between the coldest and the warmest month.
Annual precipitation is moderate at about 525 mm21 in. The wettest three-month stretch is June–August, which brings 43% of the annual total. Months with less than 20 mm0.8 in on average: February. The wettest month is July (79 mm3.1 in), the driest is February (18 mm0.7 in).
Relative humidity ranges from 68% in July to 99% in December. The clearest skies (lowest average cloud amount, 61%) are typical of August. Average wind speed near the ground ranges from 4 km/h (2 mph) in November to 6 km/h (4 mph) in April. Daylight lasts from about 6.9 hours in December to 17.6 hours in June.
A lasting snow cover is typical in October–April, when the average snow depth in the reanalysis exceeds 10 cm (deepest in February, about 34 cm).
Best time to visit Bratsk
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June–August: average highs of 21 °C70 °F to 24 °C75 °F with 74 mm2.9 in to 79 mm3.1 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of −18 °C−1 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Bratsk
- Winter (December–February) — highs −18−1 to −15 °C6 °F, lows −26−15 to −23 °C−9 °F, about 22 mm0.9 in of precipitation a month. Pack heavy insulated clothing, thermal base layers, a warm hat, mittens and insulated boots.
- Spring (March–May) — highs −523 to 13 °C55 °F, lows −147 to 3 °C38 °F, about 34 mm1.4 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Summer (June–August) — highs 2170 to 24 °C75 °F, lows 1253 to 15 °C59 °F, about 76 mm3.0 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Autumn (September–November) — highs −817 to 13 °C55 °F, lows −155 to 4 °C40 °F, about 43 mm1.7 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
How Bratsk compares
Of the 169 places in Russia covered by World Climates, Bratsk is the 153rd warmest by annual mean temperature and the 128th wettest by annual precipitation. See all of them on the Russia climate page.
Places in other countries with the most similar temperature and rainfall pattern: Daxinganling (China, Dwb), Yakeshi (China, Dwb) and Jiagedaqi (China, Dwb).
Nearby places
- Ust-Ilimsk 217 km · −2 °C28 °F · 554 mm22 in
- Kansk 365 km · 1 °C34 °F · 568 mm22 in
- Ust-Ordynskiy 421 km · 0 °C32 °F · 347 mm14 in
- Angarsk 424 km · 1 °C34 °F · 457 mm18 in
- Irkutsk 461 km · 1 °C34 °F · 418 mm16 in
- Krasnoyarsk 538 km · 1 °C34 °F · 542 mm21 in
- Ulan-Ude 618 km · 1 °C33 °F · 310 mm12 in
- Kyzyl 679 km · 3 °C37 °F · 290 mm11 in
Frequently asked questions
What is the warmest month in Bratsk?
July is the warmest month in Bratsk, with an average high of 24 °C (75 °F) and an average low of 15 °C (59 °F).
What is the coldest month in Bratsk?
January is the coldest month, with an average high of -18 °C (-1 °F) and an average low of -26 °C (-15 °F).
When does it rain the most in Bratsk?
July is the wettest month with about 79 mm (3.1 in) of precipitation; February is the driest with about 18 mm (0.7 in).
What is the best time to visit Bratsk?
Judging by long-term averages, the most comfortable months are June–August.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.