In May, the spring period ends and the transition to summer is underway. Typical for May is unstable weather, uneven heat build-up, cold weather returns after prolonged warm weather. In the first decade of May in the north of the republic there is a steady transition of the average daily air temperature through +10 ° C, in the southern regions of Kazakhstan at the end of May - after +20 C. In the first half of May, frosts usually stop in the southern and western regions of Kazakhstan, and by the end of the month they end in the northern regions. But in some years in the west and south-east of the republic they can be observed until the end of the month, and in the northern half of the country - even in June.
The average monthly air temperature continues to rise from April to May, but not as intensively as in April. The amount of precipitation according to long-term data from April to May in the northern half of Kazakhstan and in the mountainous regions of the south and south-east increases and amounts to 21-52 mm per month in the northern half, 100-200 mm in the mountainous regions of the south, south-east and east. In the south-west and in the desert areas of the south of the country, precipitation decreases to 6-16 mm.
During May 2023, in the territory of the republic, when cyclones and anticyclones change, both long hot days and rainy and cool days will be observed. With the passage of atmospheric fronts associated with Southern and western cyclones, unstable weather patterns will be observed with prolonged rains, thunderstorms and gusty winds, in the south and west of Kazakhstan with hail and dust storms.
In the first half of the first decade of May, thunderstorms are forecast in the west, in the southern half of the country, sometimes heavy, and in the east of the Republic of Kazakhstan in the first days of May, rain may turn into sleet. The wind is expected to increase with gusts up to 15-25 m/s.
In early May, the Northern anticyclone will cause a decrease in air temperature in most of the republic, at night in the north, center and east of Kazakhstan, as well as in the north and mountainous areas of the south-east of the republic, frosts of up to 1-8 degrees are expected. However, from the middle of the first decade of May, with the release of the Southern cyclone, the temperature background in the north, in the center and east of the republic will gradually increase at night from -1-10 ° C to +5+12 ° C, during the day from +5+13 ° C to +22+30 ° C.
In the south of the country, during the first decade, the air temperature is expected to fluctuate at night from +8+15 °From +12+20°C, during the day from +27+33°C to +20+25°C; in the west of the Republic of Kazakhstan - at night from +15 +22 ° C to +8+13 ° C, during the day from +25+33 ° C to +17+22 °C.
In the south-east of the Republic of Kazakhstan, a decrease in air temperature at night is predicted from +8+15 °From 0 to +5 ° C, during the day from +15+25 ° C to +7+15 ° C, at the end of the decade the temperature background will rise again at night to +5+10 ° C, during the day to +20+28 ° C ;
In the second and third decades of May, in the west, in the center, in the southern half of Kazakhstan, in the third decade of the month in the north and east of the country, with the removal of warm air masses from the regions of Iran and Central Asia, hot summer weather is forecast - at night the air will warm up to +15 +20 ° C, in the afternoon to +25+33°C.
With the influx of cold air masses from the territory of Russia in the northern, central and eastern regions of the republic, the thermometer columns can drop to 0,+5 ° C at night, and on some days frosts up to 1-6 degrees are possible, during the day up to +8+15 ° C, in the southern regions and in the west of the country, a decrease in heat, temperatures is expected the air will drop at night to +2+10 °C, during the day to +15+22 ° C.
Note: the forecast for the month should be used as an advisory, which is subsequently adjusted as the synoptic situation changes and is clarified by weather forecasts for the decade.