April Weather in Harmanli, Bulgaria

Last updated: August 22, 2025

In April, the average temperature in Harmanli, Bulgaria hovers around 12°C (55°F), with a range that can dip to a chilly -1°C (30°F) or rise to a warm 28°C (82°F). Expect a fair amount of precipitation, averaging 51 mm (2.0 in) over approximately 8 days. With an average humidity of 72%, it's a time of year where layers and an umbrella might come in handy!

April Temperature in Harmanli

In April in Harmanli, the average temperature is 12°C (55°F), with maximums reaching 28°C (82°F) and minimums dropping as low as -1°C (30°F). Be prepared for a range of temperatures, making it essential to pack layers for your travel to Harmanli.

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

The chart illustrates April temperature patterns in Harmanli, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harmanli, April typically has an average temperature of 12°C (55°F), with highs reaching up to 28°C (82°F) and lows dropping to around -1°C (30°F).

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

April Precipitation in Harmanli

In Harmanli in April, the total precipitation amount is 51 mm (2.0 in), spread over a duration of 8 days.

April Precipitation Trends in Harmanli

The chart displays monthly precipitation patterns in Harmanli, 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 Harmanli, April typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 8 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Harmanli

In Harmanli in April, humidity is 72%. With an average temperature of 12°C (55°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration a little less comfortable and requiring a light jacket to stay warm and dry.

April Average Humidity in Harmanli

This chart illustrates the average monthly humidity levels in Harmanli, 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 Harmanli is approximately 72%, 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 Harmanli

In Harmanli in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Harmanli.

Maximum UV Index Levels in Harmanli for April

The chart shows the monthly maximum UV Index (UVI) for Harmanli 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 Harmanli typically reaches 7, which falls under the high exposure category.

Data source: Harmanli 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 Harmanli Compares to Other Months

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

This table compares monthly weather conditions in Harmanli, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (37°F)	55 mm (2.2 inches)	87%	low
February Weather	5°C (42°F)	48 mm (1.9 inches)	84%	moderate
March Weather	8°C (46°F)	68 mm (2.7 inches)	81%	high
April Weather	12°C (55°F)	51 mm (2.0 inches)	72%	high
May Weather	18°C (65°F)	61 mm (2.4 inches)	74%	very high
June Weather	22°C (71°F)	108 mm (4.2 inches)	65%	very high
July Weather	25°C (77°F)	49 mm (1.9 inches)	59%	very high
August Weather	26°C (79°F)	17 mm (0.7 inches)	49%	very high
September Weather	21°C (71°F)	23 mm (0.9 inches)	57%	high
October Weather	15°C (59°F)	81 mm (3.2 inches)	76%	high
November Weather	10°C (50°F)	58 mm (2.3 inches)	84%	moderate
December Weather	6°C (42°F)	85 mm (3.3 inches)	86%	low