BELHYDROMET

The average air temperature in Belarus for September 2026 was +13.9°C, which is 1.2°C above the climatic norm. Such and higher average monthly air temperatures in September are recorded approximately once every 7-8 years. The warmest September was in 2024, with an average monthly air temperature across the country of +17.5°C, which is 4.8°C above the climatic norm.

Deviation of the average air temperature in September for the period 1991-2026 
from the climatic norm (+12.7°C)

A positive air temperature anomaly spread across the entire territory of the country and was mainly within the range of 1.0°C to 1.6°C.
In the regional context, the highest values of positive deviations of air temperature from the climatic norm were noted in Mogilev and Vitebsk regions (1.3°C on average for each region), while in Gomel region the deviations were the smallest (1.1°C).

Deviation (°C) of the average air temperature in September 
from the climatic norm across the territory of Belarus

The average air temperature of all decades of the month was above normal. The first and second decades were 1.4°C above normal, and the third decade was 0.9°C above normal.

Average air temperature and climatic norm 
by decades of September 2026 across the territory of Belarus

Daytime air temperature during the month was mainly +19 +25°C. On certain days, predominantly in the third decade of the month, it dropped to +18°C and below. On September 9 and 10, in the south of the country, the air warmed up to +30°C and above. The maximum value (+31.5°C) of air temperature was reached during the day on September 9 at the Brest station.
Nighttime air temperature on most days of the month was within +8 +14°C, and on the coldest nights it dropped to +5°C and below. The minimum air temperature was recorded at the YezeryShche station on September 29 and amounted to +0.7°C.
Over the month, on average across the republic, 72 mm of precipitation fell, which amounted to 134% of the climatic norm. Such and wetter Septembers occur on average once every 4 years. Over most of the country's territory, 100-155% of the precipitation norm fell. In certain areas, predominantly in the north of the country, more than two monthly norms of precipitation fell.

Deviation (%) of the monthly precipitation amount for September 
from the climatic norm across the territory of Belarus

By region, the most precipitation was noted in the territory of Vitebsk region – on average across the region, 109 mm fell, or 185% of the norm. The least was in the territory of Brest region – 45 mm, or 85% of the norm.

Precipitation amount for September 2026 and climatic norm 
by regions and across the territory of Belarus

During the first and third decades, an excess of precipitation was noted. In the first decade, 27 mm of precipitation fell, or 131% of the decade norm; in the third decade – 36 mm, or 221% of the norm. In the second decade, on average across the country, 10 mm fell, or 57% of the precipitation norm.

Precipitation amount and climatic norm 
by decades of September 2026 across the territory of Belarus

During the month, fogs were observed. Rain was mainly of a showery nature and, predominantly in the first decade, was accompanied by thunderstorms. On certain days, in some places across the country, wind speed increased in gusts to 15 m/s and more. The maximum wind speed for the month (20 m/s) was registered on September 5 at the Slutsk and Novogrudok stations.

When using the information a reference to Belhydromet is obligatory