May Weather in Harmanli, Bulgaria

Last updated: August 22, 2025

In May, the average temperature in Harmanli, Bulgaria hovers around 18°C (65°F), offering a pleasant climate for outdoor activities. Expect fluctuations, with minimum temperatures dipping to 4°C (39°F) and highs soaring up to 33°C (93°F). Precipitation is notable, totaling 61 mm (2.4 in) across approximately 11 days, while humidity remains relatively high at 74%, contributing to the region's lush environment. Enjoy the balance of warmth and refreshing breezes!

May Temperature in Harmanli

In May in Harmanli, the average temperature is 18°C (65°F). Maximums can reach 33°C (93°F) and minimums can be as low as 4°C (39°F). Travelers should prepare for a wide range of temperatures, making layers a wise packing choice.

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

The chart illustrates May 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, May typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (93°F) and lows dropping to around 4°C (39°F).

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

May Precipitation in Harmanli

In Harmanli in May, the total precipitation amount is 61 mm (2.4 in) over the course of 11 days.

May Precipitation Trends in Harmanli

The chart displays monthly precipitation patterns in Harmanli, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Harmanli, May typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Harmanli

In Harmanli in May humidity is 74%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can make even short walks feel laborious, leading travelers to seek shade and refreshment more often.

May Average Humidity in Harmanli

This chart illustrates the average monthly humidity levels in Harmanli, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Harmanli is approximately 74%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Harmanli

In Harmanli in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Harmanli.

Maximum UV Index Levels in Harmanli for May

The chart shows the monthly maximum UV Index (UVI) for Harmanli in May, 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 May, the maximum UV index in Harmanli typically reaches 9, which falls under the very high exposure category.

Data source: Harmanli May 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 May 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 May’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 May’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