Sumy Weather & Climate: Best Time to Visit
The climate in Sumy, Sumy Oblast, Ukraine, is marked by large temperature swings across the seasons, ranging from 27°C (81°F) in July to -1°C (30°F) in January.
With around 666 mm (26 in) of annual rain/snowfall, the city has moderate precipitation levels. July is the wettest month and February the driest.
Monthly Temperature in Sumy
In Sumy, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 27°C (81°F) in July to a very cold -1°C (30°F) in the coolest month, January.
Nights vary from 16°C (61°F) in July to around -7°C (19°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sumy
On average, Sumy receives a reasonable amount of rain/snowfall, with an annual precipitation of 666 mm (26 in). Precipitation levels in Sumy remain relatively steady throughout the year. July has the most rain, with 76 mm (3 in) over 14 days. In the driest month February, this drops slightly to 47 mm (1.9 in), making the city's climate fairly predictable. For more details, please visit our Sumy Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Humidity in Sumy by Month
The relative humidity is high throughout the year in Sumy.
The city experiences its highest humidity in November, reaching 86%. In May, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Sumy 3-Day Forecast
Check the conditions for any month of the year.
