Best Time to Visit Sumy
Best time: May, Jun, Aug, Jul.
Jul is warmest (25.2°C high); Jul is rainiest (80 mm).
Sumy weather by month
| Month | High °C | Low °C | Rain mm | Sun hrs |
|---|---|---|---|---|
| Jan | -2.9 | -8.7 | 41 | 1.3 |
| Feb | -1.8 | -8.4 | 32 | 2.5 |
| Mar | 3.5 | -3.7 | 36 | 4.3 |
| Apr | 13 | 3.7 | 43 | 6.1 |
| May | 20.5 | 9.3 | 53 | 8.5 |
| Jun | 24.2 | 12.8 | 71 | 9.4 |
| Jul | 25.2 | 14.4 | 80 | 8.9 |
| Aug | 24.1 | 13 | 61 | 7.7 |
| Sep | 18.1 | 8 | 52 | 5.1 |
| Oct | 10.9 | 2.6 | 50 | 2.9 |
| Nov | 2.7 | -2.6 | 48 | 1.4 |
| Dec | -1.4 | -6.4 | 45 | 1 |
Average high temperature
Best months by activity
Overall: MayJunAugJul
Beaches: AugJunJulMay
Hiking: MayAugAprJun
Sightseeing: MayJunAugJul
Sumy quick facts
What to pack
Cold months (Jan, Feb, Mar, Oct, Nov, Dec): warm layers and a coat.
Frequently asked questions
When is the best time to visit Sumy?
May, Jun, Aug, Jul.
What is the rainiest month?
Jul, about 80 mm.
What is the warmest month?
Jul, with average highs of 25.2°C.
Where to stay
See Sumy hotels · Book Sumy tours & activities
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Climate data: Open-Meteo Historical (ERA5), 1991–2020 climate normals.
Licensed under CC BY 4.0.
Open-Meteo.