Omsk, Omsk Oblast Weather by Month and Climate Averages

How much rain does Omsk get?

Omsk gets 413 mm of precipitation in an average year, spread over about 145 days with measurable rain. That is more rainy days than 61% of Russia.

July is the wettest month, with 64 mm. February is the driest, with 18 mm. December has the most rainy days, about 18.

The longest dry spell in the last five years lasted 9 days, to October 22, 2021.

Omsk weather by month

Omsk weather in January

In January, Omsk averages a high of -13°C and a low of -21°C. It gets 21 mm of precipitation over about 15 rainy days. The sun is out about 15% of daylight hours. The January record high is 3°C (1975) and the record low is -42°C (1979).

Omsk weather in February

In February, Omsk averages a high of -10°C and a low of -19°C. It gets 18 mm of precipitation over about 12 rainy days. The sun is out about 23% of daylight hours. The February record high is 8°C (2016) and the record low is -42°C (1972).

Omsk weather in March

In March, Omsk averages a high of -2°C and a low of -11°C. It gets 19 mm of precipitation over about 11 rainy days. The sun is out about 32% of daylight hours. The March record high is 14°C (2008) and the record low is -34°C (1971).

Omsk weather in April

In April, Omsk averages a high of 10°C and a low of 0°C. It gets 25 mm of precipitation over about 9 rainy days. The sun is out about 47% of daylight hours. The April record high is 31°C (1982) and the record low is -21°C (2002).

Omsk weather in May

In May, Omsk averages a high of 19°C and a low of 7°C. It gets 31 mm of precipitation over about 9 rainy days. The sun is out about 56% of daylight hours. The May record high is 36°C (2004) and the record low is -6°C (1985). May is one of the most comfortable months to visit.

Omsk weather in June

In June, Omsk averages a high of 24°C and a low of 12°C. It gets 57 mm of precipitation over about 11 rainy days. The sun is out about 47% of daylight hours. The June record high is 38°C (1977) and the record low is -1°C (2022). June is one of the most comfortable months to visit.

Omsk weather in July

In July, Omsk averages a high of 25°C and a low of 14°C. It gets 64 mm of precipitation over about 12 rainy days. The sun is out about 49% of daylight hours. The July record high is 37°C (1992) and the record low is 3°C (1989).

Omsk weather in August

In August, Omsk averages a high of 23°C and a low of 12°C. It gets 55 mm of precipitation over about 12 rainy days. The sun is out about 48% of daylight hours. The August record high is 36°C (2012) and the record low is 1°C (1996). August is one of the most comfortable months to visit.

Omsk weather in September

In September, Omsk averages a high of 16°C and a low of 6°C. It gets 28 mm of precipitation over about 10 rainy days. The sun is out about 40% of daylight hours. The September record high is 33°C (1990) and the record low is -7°C (1992).

Omsk weather in October

In October, Omsk averages a high of 8°C and a low of -1°C. It gets 32 mm of precipitation over about 12 rainy days. The sun is out about 32% of daylight hours. The October record high is 26°C (2018) and the record low is -22°C (1976).

Omsk weather in November

In November, Omsk averages a high of -3°C and a low of -10°C. It gets 35 mm of precipitation over about 15 rainy days. The sun is out about 20% of daylight hours. The November record high is 11°C (2013) and the record low is -38°C (1987).

Omsk weather in December

In December, Omsk averages a high of -10°C and a low of -18°C. It gets 29 mm of precipitation over about 18 rainy days. The sun is out about 17% of daylight hours. The December record high is 4°C (1975) and the record low is -43°C (1976).

Sunshine, humidity and wind in Omsk

May is the sunniest month in Omsk, with sunshine about 56% of daylight hours. January is the cloudiest, at 15%. Over the year the sun shines about 36% of daylight hours. Omsk is sunnier than 64% of Russia.

Humidity peaks in November at 82% and is lowest in May at 44%.

Omsk has about 4 days a year above 32°C. Omsk is hotter than 61% of Russia.

First and last freeze in Omsk

The first fall freeze in Omsk typically comes around September 24, and the last spring freeze around May 17. That leaves a frost-free growing season of about 130 days.

Omsk weather records

The hottest temperature on record at the Omsk station is 38°C, on June 19, 1977. The coldest is -43°C, on December 22, 1976.

The wettest day on record brought 100 mm of rain, on June 26, 2020.

47 all-time records have been set at the station since 1970.

The annual mean temperature has changed by +0.3°C per decade since 1970.

The best time to visit Omsk

The most comfortable time to visit is typically May to June and August, when daytime highs sit near 22°C.

Winter (December–February) is cold, with average highs around -11°C and lows near -19°C.

Spring (March–May) is chilly, with average highs around 9°C and lows near -2°C.

Summer (June–August) is warm, with average highs around 24°C and lows near 13°C.

Autumn (September–November) is chilly, with average highs around 7°C and lows near -2°C.

Omsk climate questions

How much rain does Omsk get?

Omsk gets 413 mm of precipitation in an average year, over about 145 rainy days.

What is the wettest month in Omsk?

July is the wettest month in Omsk, with 64 mm. February is the driest, with 18 mm.

How many rainy days does Omsk have a year?

Omsk has about 145 days with measurable rain in an average year. December has the most, about 18.

What is the hottest month in Omsk?

July is the warmest month in Omsk, with an average high of 25°C.

What is the coldest month in Omsk?

January is the coldest month in Omsk, with an average low of -21°C.

What is the record high temperature in Omsk?

The record high at the Omsk station is 38°C, set on June 19, 1977. The record low is -43°C, on December 22, 1976.

What is the sunniest month in Omsk?

May is the sunniest month in Omsk, with sunshine about 56% of daylight hours. January is the cloudiest.

When is the first frost in Omsk?

The first fall freeze in Omsk typically comes around September 24. The last spring freeze is around May 17.

What is the best time to visit Omsk?

The most comfortable time to visit is typically May to June and August, when daytime highs sit near 22°C.