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07.09.2021

Climate characteristic of summer 2021

The national average air temperature for the summer season of 2021 was + 20.0°C, which is 2.6°C higher than the climatic norm. The summer of 2021 ranked 2nd in the 141-year ranked series of observations from warmest to coldest season, behind only the summer of 2010. The positive anomaly spread throughout the country, reaching the highest values in the Mogilev region (2.9°C).
 
Deviation of the average air temperature for the summer season
from the climatic norm on the territory of Belarus

Over the past summer, from 36 to 66 hot days (with a temperature of + 25°C and above) were noted at a rate of 22-48 days and from 7 to 32 very hot days (with a temperature of + 30°C and above) at a rate of 1-6 such days.
The maximum air temperature of the summer season (+37.1°С) was recorded on June 23 at Oktyabr station, the minimum (+ 1.0°С) - on June 1 at Minsk station and on August 25 at Yezerishche station.
Average air temperature by months of summer 2021
and climatic norm for the territory of Belarus

The summer temperature regime was not uniform. The first two months were very warm, August was close to normal.
The average air temperature in Belarus in June was +19.9°C, which is 3.5°C higher than the climatic norm. June 2021 ranked 3rd in a ranked series of observations from warmest to coldest since 1945.
The average air temperature in all three decades of June exceeded the climatic norm. The air temperature in the first decade was 1.3°C above the norm. The second and especially the third decades turned out to be very warm, the average air temperature of which exceeded the climatic norm by 3.1 and 6.2 °C, respectively. In the third decade of June, an intense heat wave was noted, as a result of which daytime temperatures on some days in some places exceeded the 35-degree mark, reaching the criterion of a dangerous phenomenon. In addition, in most of the territory of Belarus, with the exception of some observation points mainly in the west, the absolute maximum air temperature for June was updated. The previous values of the absolute maximum air temperature were recorded mainly over the past twenty years, but at some observation points the temperature records of June, which had been held for more than a hundred years, were exceeded. Thus, at Borisov and Vasilevichi stations, the June records of the maximum air temperature recorded in 1901 were updated, and at the Pinsk station the record noted in June 1885 was exceeded.
The maximum value of the air temperature (+37.1°C) was registered at the October weather station on June 23. The minimum value of the air temperature (+1.0°С) was noted at the Minsk station on June 1.
In July, the average air temperature in Belarus was +22.5°C, which is 4.1°C higher than the climatic norm. July 2021 ranked 2nd in a ranked series of observations from warmest to coldest since 1881. The first place belongs to July 2010.
The average air temperature in all three decades exceeded the climatic norm. The first and second decades were very warm, the average air temperature of which exceeded the climatic norm by 4.4 and 6.0 ° C, respectively. The air temperature in the third decade was 2.2 ° C above the norm. In the first and second decades of July, there was a period with abnormally hot weather (heat wave), during which the air temperature during the day was mainly within +30 + 34 ° С, and on some days in some places exceeded the 35-degree mark, reaching the criterion of a dangerous phenomenon.
The maximum air temperature in July (+35.5°С) was recorded at Mogilev station on July 12 and at Lelchitsy station on July 17. The minimum temperature value (+ 6.8 ° С) was noted at the Yezerishche and Lyntupy stations on July 22.
In August, the national average air temperature was + 17.5°C, which is 0.2°C higher than the climatic norm.
The average air temperature in the first and second decades was higher than the norm by 0.4 and 1.0°C. The air temperature in the third decade was below the norm by 0.9°C. The maximum value of the air temperature for the month was noted at Bragin station on August 17 and amounted to + 34.3°C. The minimum temperature value (+1.0°С) was noted at Yezerishche station on August 25.
Rainfall for the summer of 2021 and climatic norm
by regions and territory of Belarus

During the summer of 2021, an average of 241 mm of precipitation fell across Belarus, which is 104% of the climatic norm for the summer season. The largest amount of precipitation during the season fell in the Brest region - 306 mm or 137% of the climatic norm. The least precipitation fell in the Mogilev region - 175 mm or 77% of the climatic norm.
During the season, precipitation fell unevenly.
In June and July, on average across the country, there was a significant shortage of precipitation: 55 mm of precipitation fell in June, which amounted to 67% of the climatic norm, in July - 66 mm, or 78% of the climatic norm. In August, there was an excess of moisture - on average, 121 mm of precipitation or 180% of the climatic norm fell on the territory of the country per month.
Despite the fact that the first two months were generally marked by a lack of precipitation, at some observation points during this period the amount of monthly precipitation exceeded the norm. In August, the total amount of precipitation was 1-3 times the norm. Summer rains were mostly torrential, in places accompanied by thunderstorms and hail. On some days, precipitation in places was very strong and reached the criterion of a dangerous phenomenon.
 
Precipitation by months of summer 2021 and
climatic norm for the territory of Belarus

During the summer season, in some areas, there was an increase in wind gusts of up to 15 m/s and more, and in some places the wind speed reached the criterion of a dangerous phenomenon. Thus, on June 25, at the Surazh and Ulla hydrological post, the wind speed on the Beaufort scale exceeded 33 m/s. On some days at night and in the morning, fogs were observed in places.


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