April Weather in Sumy, Ukraine

Last updated: August 28, 2025

In April, the average temperature in Sumy, Ukraine is a cool 9°C (48°F). However, temperatures can range from a brisk -8°C (18°F) to a pleasantly warm 24°C (76°F). Expect about 40 mm (1.6 in) of precipitation spread over 8 days, with average humidity hovering around 79%. Prepare for a blend of chilly and mild conditions!

April Temperature in Sumy

In April in Sumy, the average temperature is 9°C (48°F), with maximums reaching up to 24°C (76°F) and minimums dropping as low as -8°C (18°F). It's advisable to pack layers and be prepared for varying weather conditions when traveling during this month.

April Weather in Sumy: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Sumy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumy, April typically has an average temperature of 9°C (48°F), with highs reaching up to 24°C (76°F) and lows dropping to around -8°C (18°F).

Data source: Temperature data for Sumy generated using information from the Copernicus Climate Change Service.

April Precipitation in Sumy

In Sumy in April, the precipitation amount is 40 mm (1.6 in), occurring over a span of 8 days.

April Precipitation Trends in Sumy

The chart displays monthly precipitation patterns in Sumy, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Sumy, April typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

April Humidity in Sumy

In Sumy in April humidity is 79%. With an average temperature of 9°C (48°F), this humidity feels like a chilly mist wrapping around you, making outdoor activities brisk yet invigorating, but it can also leave you feeling damp and slightly chilled if you're not dressed appropriately for the conditions.

April Average Humidity in Sumy

This chart illustrates the average monthly humidity levels in Sumy, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Sumy is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Sumy

In Sumy in April, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Sumy.

Maximum UV Index Levels in Sumy for April

The chart shows the monthly maximum UV Index (UVI) for Sumy in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Sumy typically reaches 5, which falls under the moderate exposure category.

Data source: Sumy April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How April Weather in Sumy Compares to Other Months

Weather in Sumy varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Sumy, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sumy, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	43 mm (1.7 inches)	92%	low
February Weather	-3°C (26°F)	45 mm (1.8 inches)	93%	low
March Weather	1°C (35°F)	40 mm (1.6 inches)	90%	moderate
April Weather	9°C (48°F)	40 mm (1.6 inches)	79%	moderate
May Weather	15°C (59°F)	64 mm (2.5 inches)	66%	high
June Weather	20°C (68°F)	58 mm (2.3 inches)	65%	very high
July Weather	21°C (69°F)	84 mm (3.3 inches)	55%	very high
August Weather	21°C (69°F)	28 mm (1.1 inches)	49%	high
September Weather	15°C (60°F)	39 mm (1.5 inches)	69%	high
October Weather	9°C (49°F)	36 mm (1.4 inches)	84%	moderate
November Weather	2°C (36°F)	37 mm (1.4 inches)	92%	low
December Weather	-1°C (30°F)	69 mm (2.7 inches)	94%	low