Sumy Weather in January
January in Sumy brings very low temperatures, with daytime highs of -1°C (30°F) and nights around -7°C (19°F). Expect around 51 mm (2 in) of snowfall during the month.
Rainfall in Sumy in January
The climate data from previous years indicates about 14 days of snow, averaging 51 mm (2 in) for the month. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Sumy in January
In January, Sumy sees very low temperatures, with highs of -1°C (30°F). Nights drop to around -7°C (19°F). January is typically considered a winter month. It stays very cold throughout much of the day, so warm winter clothing is essential. With overnight lows of -7°C (19°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. Typically, it's the chilliest month of the year. Ensure you're prepared by packing appropriate winter gear.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August and September typically offer the best weather for Sumy.
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 January
Min Temperature
-7°C (19°F)
Max Temperature
-1°C (30°F)
Chance of Rain
46%
Precipitation
51 mm (2 in)
Rainy days
14 days
Humidity
85%
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Sumy typically stay consistent throughout January, with daily highs averaging around -1°C (30°F). Nights are very cold, with lows typically ranging from -10°C (14°F) to -6°C (21°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Sumy in January
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 January
Based on 25 years of weather observations (2000-2025), these are the most extreme conditions recorded in Sumy.
- On January 10, 2025, temperatures climbed to 10°C (50°F), marking the warmest January day on record.
- The heaviest January precipitation occurred on January 8, 2016, when 31 mm (1.2 in) of precipitation fell.
Best Places in Ukraine in January
Find out more about the weather in Ukraine and which places have the best travel conditions in this month. See all of Ukraine in January →
perfect weather
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tolerable
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What to Wear in Sumy in January
It's wise to bundle up for freezing conditions in Sumy in January. If you have a winter jacket with good insulation, waterproof winter boots, thermal layers, and warm accessories it's smart to pack them. Hand and foot warmers can be lifesavers, especially during the night. Wet weather is likely, so pack waterproof gear for multiple rainy days.What To Do in Sumy in January
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.
