Sumy climate: monthly averages: annual mean temperature 7.2 C; warmest month Jul (21.3 C); coldest month Jan (-7.9 C).
Annual mean temperature: 7.2 C
Warmest month: Jul (21.3 C)
Coldest month: Jan (-7.9 C)
Wettest month: Jul (2.36 mm/day)
All-time record high: 38.9 C
All-time record low: -35.1 C
**Sumy’s climate averages** reflect a temperate continental pattern, with mild summers and cold winters. The city’s annual mean temperature is **7.2°C**, peaking in **July at 21.3°C** and dropping to **-7.9°C in January**. Rainfall averages **613 mm yearly (1.68 mm/day)**, with July the wettest month at **2.36 mm/day**. Extreme temperatures range from **-35.1°C** (record low) to **38.9°C** (record high), highlighting seasonal contrasts. |July averages **21.3°C**, the peak of the year’s milder temperatures. |The city receives **613 mm of rain per year**, with July being the wettest.
Annual mean temperature 7.2 C
Warmest month Jul (21.3 C)
Coldest month Jan (-7.9 C)
Wettest month Jul (2.36 mm/day)
All-time record high 38.9 C
All-time record low -35.1 C
Annual precipitation 613 mm / year
Coordinates 50.91741, 34.79906
Population 256,474
Average monthly temperature and rainfall in Sumy
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
-7.9
1.57
4.3
-35.1
Feb
-6.7
1.43
10.5
-30.5
Mar
-0.7
1.48
19.1
-23.1
Apr
7.8
1.29
26.9
-7.4
May
15.0
2.13
32.6
-1.2
Jun
18.6
2.28
34.2
2.8
Jul
21.3
2.36
36.5
8.0
Aug
20.7
1.30
38.9
6.4
Sep
14.6
1.51
34.2
-1.2
Oct
7.1
1.68
24.7
-6.7
Nov
0.7
1.50
17.1
-15.2
Dec
-4.9
1.64
9.1
-27.7
What the Sumy climate table shows
Values are multi-decadal climatological averages for the 50.91741, 34.79906 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.