Sumy Weather in October
In Sumy, October brings moderate daytime temperatures around 13°C (55°F), with nights cooling to 4°C (39°F). Some rainfall is to be expected.
Rainfall in Sumy in October
Historically, approximately 10 days this month are expected to have rain, averaging 54 mm (2.1 in). Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Sumy in October
Daytime highs in Sumy in October reach 13°C (55°F), with nights around 4°C (39°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights drop to 4°C (39°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.Should you favor a climate that's both dry and comfortably warm, May, June, July, August and September typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ukraine, check out our Sumy's climate page.
Sumy Temperature in October
Min Temperature
4°C (39°F)
Max Temperature
13°C (55°F)
Chance of Rain
34%
Precipitation
54 mm (2.1 in)
Rainy days
10 days
Humidity
81%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Sumy typically drop from around 14°C (57°F) at the start of October to approximately 7°C (45°F) by the end. Nights are cold, with lows typically ranging from 0°C (32°F) to 6°C (43°F).
Average temperatures in October
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather for Sumy in October
Browse day-by-day weather records for Sumy spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sumy historical weather extremes in October
Our historical data for Sumy spans 1976 to 2025, revealing these weather extremes.
- The warmest day in October was on October 4, 1999, with a maximum of 27°C (81°F).
- The lowest overnight temperature recorded in October was -9°C (16°F) (October 25, 2014).
Best Places in Ukraine in October
Find out more about the weather in Ukraine and which places have the best travel conditions in this month. See all of Ukraine in October →
perfect weather
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tolerable
unpleasant
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What to Wear in Sumy in October
The weather can swing between comfortable and chilly in October, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days.What To Do in Sumy in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ukraine, check out our Sumy's climate page.
See the full Sumy climate overview or explore weather in Ukraine.
