Climate averages 1991–2020
Sumy weather
in August.
A warm, moderately wet month: the 2nd warmest and the 7th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Sumy: daytime highs average 24.6°C and nights cool to about 15.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 47 mm of rain on roughly 8 days, which makes August a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 34 min on an average August day.
The nearest other city in this atlas is Konotop (117 km away). In August its highs average 24.3°C, about as warm as Sumy, with 48 mm of rain.
Among the 59 cities listed in Ukraine, Sumy ranks joint 43rd of 59 for the warmest August highs and 38th of 59 for the driest August (rainfall, lowest first). The mean August high of those 59 cities is 26.0°C; Sumy is 1.4°C cooler than that mean.
From August to September, average highs fall by 6.1°C to 18.5°C, and monthly rainfall rises from 47 mm to 51 mm.
The annual picture
August in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sumy climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -3.0°C-7.5°C | -7.5°C | 42 | 9.9 | 8.58 h |
| February | -1.9°C-7.8°C | -7.8°C | 35 | 8.9 | 10.010 h |
| March | 4.0°C-3.7°C | -3.7°C | 42 | 9.6 | 11.812 h |
| April | 13.2°C3.3°C | 3.3°C | 43 | 9.3 | 13.814 h |
| May | 19.5°C9.5°C | 9.5°C | 61 | 11.3 | 15.516 h |
| June | 23.2°C13.7°C | 13.7°C | 67 | 11.0 | 16.416 h |
| July | 25.2°C15.9°C | 15.9°C | 73 | 11.2 | 16.016 h |
| August, selected | 24.6°C15.0°C | 15.0°C | 47 | 7.6 | 14.615 h |
| September | 18.5°C10.1°C | 10.1°C | 51 | 8.2 | 12.713 h |
| October | 11.1°C4.4°C | 4.4°C | 50 | 8.8 | 10.811 h |
| November | 3.4°C-1.1°C | -1.1°C | 41 | 8.1 | 9.09 h |
| December | -1.4°C-5.6°C | -5.6°C | 40 | 9.2 | 8.08 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Konotop in AugustUkraine · 117 kmHigh 24.3°C · Low 15.0°C · 48 mm rain
- Belgorod in AugustRussia · 130 kmHigh 25.0°C · Low 15.5°C · 41 mm rain
- Kursk in AugustRussia · 132 kmHigh 24.2°C · Low 14.7°C · 49 mm rain
- Shostka in AugustUkraine · 140 kmHigh 23.6°C · Low 14.6°C · 50 mm rain
- Kharkiv in AugustUkraine · 146 kmHigh 25.8°C · Low 15.9°C · 43 mm rain
- Poltava in AugustUkraine · 149 kmHigh 25.9°C · Low 16.0°C · 42 mm rain
- Zheleznogorsk (Kursk Oblast), Russia in AugustRussia · 163 kmHigh 23.3°C · Low 14.6°C · 54 mm rain
- Gubkin in AugustRussia · 195 kmHigh 24.8°C · Low 15.1°C · 41 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sumy) is explained once on the Sumy year overview and on the Sources, method and limits page.