Select units of measurement for the temperature and rainfall tables (metric or imperial).
Average weather, temperature, rainfall, sunshine hours
The climate of Omsk is
continental (according to the Köppen classification, humid continental climate with warm summer - Dfb), with cold winters, during which the temperature is normally below freezing, and relatively warm summers.
Omsk is a city of 1,150,000 inhabitants, the capital of the oblast' of the same name, located in the West Siberian Lowland, on the banks of the Irtysh River (a tributary of the Ob), along the Trans-Siberian Railway, and at 55 degrees north latitude.
Precipitation is not abundant, since it amounts to about 415 millimeters (16.5 inches) per year. In fact, due to the location east of the Urals and not far from the steppe of Central Asia, we are close to an arid area, which includes Kazakhstan, whose border is about 100 km (62 mi) to the south.
The rainiest season is summer.
Furthermore, due to the distance from all seas and the absence of obstacles for air masses, the climate is characterized by
temperature swings.
Winter, from November to March, is very cold: the average temperature in January is about -17 °C (1.5 °F). The sky is often cloudy, and light snow often falls. The ground is usually covered in snow.
During
cold spells, the temperature drops below -30 °C (-22 °F) every year, and once every few years below -40 °C (-40 °F). The record is -45.5 °C (-49.9 °F), set in January 1931.
In January 1969, the monthly daily average was -29.9 °C (-21.8 °F).
Summer, from June to August, is quite warm and sunny, even though rains and thunderstorms are quite frequent. The average in July is around 19.5 °C (67 °F).
Sometimes there can be
heatwaves, during which the temperature can reach and exceed 35 °C (95 °F). The record is 40.4 °C (104.7 °F), set in July 1940. More recently, the temperature reached 38.9 °C (102 °F) in July 2023.
In July 1989 and in July 1998, the average maximum was 29.8 °C (85.6 °F).
Omsk - Climate data
In Omsk, the
average temperature of the coldest month (January) is of -17.1 °C (1.3 °F), that of the warmest month (July) is of 19.6 °C (67.3 °F). Here are the average temperatures.
Omsk - Average temperatures (1991-2013) |
| Month | Min | Max | Mean |
|---|
| January | -21.3 | -12.9 | -17.1 |
|---|
| February | -19.4 | -10.1 | -14.8 |
|---|
| March | -11.9 | -2.5 | -7.2 |
|---|
| April | -0.5 | 9.8 | 4.6 |
|---|
| May | 6.7 | 19.6 | 13.1 |
|---|
| June | 12.1 | 23.9 | 18 |
|---|
| July | 14.1 | 25.1 | 19.6 |
|---|
| August | 11.6 | 22.4 | 17 |
|---|
| September | 5.8 | 16.2 | 11 |
|---|
| October | 0.1 | 8.8 | 4.5 |
|---|
| November | -9.8 | -3.2 | -6.5 |
|---|
| December | -18.2 | -10.3 | -14.3 |
|---|
| Year | -2.5 | 7.3 | 2.4 |
|---|
amounts to 415 millimeters (16.3 inches) per year: it is therefore quite scarce. It ranges from 17.4 mm (0.7 in) in the driest month (February) to 68.2 mm (2.7 in) in the wettest one (July). Here is the average precipitation.
Omsk - Average precipitation| Month | Days |
|---|
| January | 20 | 7 |
|---|
| February | 17 | 6 |
|---|
| March | 18 | 5 |
|---|
| April | 24 | 5 |
|---|
| May | 30 | 6 |
|---|
| June | 55 | 8 |
|---|
| July | 68 | 9 |
|---|
| August | 60 | 9 |
|---|
| September | 30 | 6 |
|---|
| October | 28 | 6 |
|---|
| November | 36 | 9 |
|---|
| December | 29 | 8 |
|---|
| Year | 415 | 85 |
|---|
There are on average around 2200
sunshine hours per year. Here are the average hours of sunshine per day.
Omsk - Sunshine hours| Month | Average | Total |
|---|
| January | 2 | 70 |
|---|
| February | 4.5 | 125 |
|---|
| March | 6 | 185 |
|---|
| April | 8 | 235 |
|---|
| May | 9 | 285 |
|---|
| June | 10.5 | 320 |
|---|
| July | 10.5 | 320 |
|---|
| August | 8 | 250 |
|---|
| September | 6 | 180 |
|---|
| October | 3.5 | 105 |
|---|
| November | 2.5 | 70 |
|---|
| December | 2 | 60 |
|---|
| Year | 6 | 2200 |
|---|
Omsk - Weather by month
Based on the period 1991-2013
January, the coldest month of the year, is generally a freezing cold month. The average temperature is of
-17.1 °C, with a minimum of
-21.3 °C and a maximum of
-12.9 °C.
On the coldest nights of the month, the temperature usually drops to around
-33.5 °C. However, it dropped to
-42.3 °C in January 2006.
On the warmest days of the month, the temperature usually reaches around
-2 °C. However, it reached
2.7 °C in January 1993.
Precipitation amounts to
20.5 mm, distributed over 7 days.
The day lasts on average 7 hours and 55 minutes. So the days are short.
There are on average 2 hours of sunshine per day. So, the sun shines 28% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
11.6 kph.
February is generally a freezing cold month. The average temperature is of -14.8 °C, with a minimum of -19.4 °C and a maximum of -10.1 °C.
On the coldest nights of the month, the temperature usually drops to around -31.5 °C. However, it dropped to -40.4 °C in February 1994.
On the warmest days of the month, the temperature usually reaches around -0.5 °C. However, it reached 2.7 °C in February 1993.
Precipitation amounts to 17.4 mm, distributed over 6 days.
The day lasts on average 9 hours and 40 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of 11.9 kph.
March is generally a freezing cold month. The average temperature is of -7.2 °C, with a minimum of -11.9 °C and a maximum of -2.5 °C.
On the coldest nights of the month, the temperature usually drops to around -24.5 °C. However, it dropped to -31 °C in March 1999.
On the warmest days of the month, the temperature usually reaches around 6 °C. However, it reached 14 °C in March 2008.
Precipitation amounts to 18.3 mm, distributed over 5 days.
The day lasts on average 11 hours and 55 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of 13.8 kph.
April is generally a quite cold month. The average temperature is of 4.6 °C, with a minimum of -0.5 °C and a maximum of 9.8 °C.
On the coldest nights of the month, the temperature usually drops to around -10.5 °C. However, it dropped to -21 °C in April 2002.
On the warmest days of the month, the temperature usually reaches around 22.5 °C. However, it reached 30 °C in April 2010.
Precipitation amounts to 23.6 mm, distributed over 5 days.
The day lasts on average 14 hours and 10 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 61%.
The average wind speed is of 14.8 kph.
May is generally a mild month. The average temperature is of 13.1 °C, with a minimum of 6.7 °C and a maximum of 19.6 °C.
On the coldest nights of the month, the temperature usually drops to around -2.5 °C. However, it dropped to -4.6 °C in May 2006.
On the warmest days of the month, the temperature usually reaches around 30 °C. However, it reached 35.5 °C in May 2004.
Precipitation amounts to 30.5 mm, distributed over 6 days.
The day lasts on average 16 hours and 10 minutes. So the days are long.
There are on average 9 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 48%.
The average wind speed is of 14.2 kph.
June is generally a very mild month. The average temperature is of 18 °C, with a minimum of 12.1 °C and a maximum of 23.9 °C.
On the coldest nights of the month, the temperature usually drops to around 5 °C. However, it dropped to 0.7 °C in June 1992.
On the warmest days of the month, the temperature usually reaches around 32.5 °C. However, it reached 36.4 °C in June 2006.
Precipitation amounts to 54.9 mm, distributed over 8 days.
The day lasts on average 17 hours and 20 minutes. So the days are very long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 10.5 hours of sunshine per day. So, the sun shines 61% of the time.
The average humidity is 57%.
The average wind speed is of 12.2 kph.
July, the warmest month of the year, is generally a warm month. The average temperature is of 19.6 °C, with a minimum of 14.1 °C and a maximum of 25.1 °C.
On the coldest nights of the month, the temperature usually drops to around 7.5 °C. However, it dropped to 4.3 °C in July 2001.
On the warmest days of the month, the temperature usually reaches around 32.5 °C. However, it reached 37.4 °C in July 1992.
Precipitation amounts to 68.2 mm, distributed over 9 days.
The day lasts on average 16 hours and 40 minutes. So the days are long.
There are on average 10.5 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 63%.
The average wind speed is of 11.8 kph.
August is generally a very mild month. The average temperature is of 17 °C, with a minimum of 11.6 °C and a maximum of 22.4 °C.
On the coldest nights of the month, the temperature usually drops to around 5 °C. However, it dropped to 0.9 °C in August 1996.
On the warmest days of the month, the temperature usually reaches around 31 °C. However, it reached 36 °C in August 2012.
Precipitation amounts to 60.2 mm, distributed over 9 days.
The day lasts on average 14 hours and 55 minutes. So the days are long.
There are on average 8 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 67%.
The average wind speed is of 11.2 kph.
September is generally a mild month. The average temperature is of 11 °C, with a minimum of 5.8 °C and a maximum of 16.2 °C.
On the coldest nights of the month, the temperature usually drops to around -1.5 °C. However, it dropped to -6.5 °C in September 1992.
On the warmest days of the month, the temperature usually reaches around 26.5 °C. However, it reached 32.1 °C in September 2007.
Precipitation amounts to 29.5 mm, distributed over 6 days.
The day lasts on average 12 hours and 40 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 67%.
The average wind speed is of 11.9 kph.
October is generally a quite cold month. The average temperature is of 4.5 °C, with a minimum of 0.1 °C and a maximum of 8.8 °C.
On the coldest nights of the month, the temperature usually drops to around -8.5 °C. However, it dropped to -13.4 °C in October 1993.
On the warmest days of the month, the temperature usually reaches around 19 °C. However, it reached 24.1 °C in October 1994.
Precipitation amounts to 27.8 mm, distributed over 6 days.
The day lasts on average 10 hours and 25 minutes.
There are on average 3.5 hours of sunshine per day. So, the sun shines 33% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of 12.9 kph.
November is generally a freezing cold month. The average temperature is of -6.5 °C, with a minimum of -9.8 °C and a maximum of -3.2 °C.
On the coldest nights of the month, the temperature usually drops to around -23.5 °C. However, it dropped to -36.7 °C in November 1998.
On the warmest days of the month, the temperature usually reaches around 6.5 °C. However, it reached 10.6 °C in November 2013.
Precipitation amounts to 35.8 mm, distributed over 9 days.
The day lasts on average 8 hours and 25 minutes.
There are on average 2.5 hours of sunshine per day. So, the sun shines 28% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of 13.5 kph.
December is generally a freezing cold month. The average temperature is of -14.3 °C, with a minimum of -18.2 °C and a maximum of -10.3 °C.
On the coldest nights of the month, the temperature usually drops to around -32.5 °C. However, it dropped to -40.8 °C in December 2012.
On the warmest days of the month, the temperature usually reaches around 0 °C. However, it reached 2.7 °C in December 2008.
Precipitation amounts to 28.6 mm, distributed over 8 days.
The day lasts on average 7 hours and 20 minutes. So the days are short. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 2 hours of sunshine per day. So, the sun shines 27% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of 12.8 kph.