May Weather in Opan, Bulgaria

Last updated: August 22, 2025

In Opan, Bulgaria, the average temperature in May is a pleasant 19°C (66°F). Temperatures can range from a cool 4°C (40°F) to a warm 35°C (96°F). During this month, you can expect approximately 52 mm (2.0 in) of precipitation spread over around 10 days, resulting in an average humidity of 72%.

May Temperature in Opan

In May in Opan, the average temperature is 19°C (66°F). Maximums can reach 35°C (96°F), while minimums can drop as low as 4°C (40°F). This makes it a great time for travelers to enjoy a variety of outdoor activities while experiencing comfortable temperatures.

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

The chart illustrates May temperature patterns in Opan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Opan, May typically has an average temperature of 19°C (66°F), with highs reaching up to 35°C (96°F) and lows dropping to around 4°C (40°F).

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

May Precipitation in Opan

In Opan in May, the precipitation amount is 52 mm (2.0 in) over the course of 10 days.

May Precipitation Trends in Opan

The chart displays monthly precipitation patterns in Opan, 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 Opan, May typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 10 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 Opan

In Opan in May, humidity is 72%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace that can make even the lightest activities feel strenuous for traveling.

May Average Humidity in Opan

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

In Opan 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 Opan.

Maximum UV Index Levels in Opan for May

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

Data source: Opan 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 Opan Compares to Other Months

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

This table compares monthly weather conditions in Opan, 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 (36°F)	47 mm (1.8 inches)	88%	low
February Weather	5°C (42°F)	43 mm (1.7 inches)	84%	moderate
March Weather	8°C (47°F)	63 mm (2.5 inches)	81%	high
April Weather	13°C (55°F)	42 mm (1.7 inches)	70%	very high
May Weather	19°C (66°F)	52 mm (2.0 inches)	72%	very high
June Weather	22°C (72°F)	92 mm (3.6 inches)	66%	very high
July Weather	26°C (78°F)	48 mm (1.9 inches)	62%	very high
August Weather	26°C (80°F)	17 mm (0.7 inches)	48%	very high
September Weather	22°C (71°F)	18 mm (0.7 inches)	58%	high
October Weather	15°C (59°F)	73 mm (2.9 inches)	78%	high
November Weather	10°C (49°F)	60 mm (2.4 inches)	85%	moderate
December Weather	5°C (42°F)	77 mm (3.0 inches)	87%	low