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May Weather in Herculian, Romania

Last updated: August 27, 2025

In May, the average temperature in Herculian, Romania hovers around 12°C (54°F). Visitors can expect a cool climate, with temperatures dipping as low as -1°C (31°F) and occasionally peaking at 26°C (79°F). Rain is also likely, with an average precipitation of 103 mm (4.1 in) spread over 17 days, contributing to an overall humidity level of 73%.

May Temperature in Herculian

In May in Herculian, the average temperature is 12°C (54°F). Maximums can reach 26°C (79°F) and minimums can be as low as -1°C (31°F). Be prepared for a range of temperatures, making it ideal for layering your clothing when traveling to Herculian this month.

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

The chart illustrates May temperature patterns in Herculian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Herculian, May typically has an average temperature of 12°C (54°F), with highs reaching up to 26°C (79°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec242936455461646556473830
Data source: Temperature data for Herculian generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Herculian

In Herculian in May, the precipitation amount is 103 mm (4.1 in) over the course of 17 days.

May Precipitation Trends in Herculian

The chart displays monthly precipitation patterns in Herculian, 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 Herculian, May typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec284351511031451018046413055
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Herculian

In Herculian in May, humidity is 73%. With an average temperature of 12°C (54°F), this humidity feels like a chilly embrace, making travel moderately uncomfortable as the dampness can chill you to your bones, especially during early morning excursions or late afternoon strolls.

May Average Humidity in Herculian

This chart illustrates the average monthly humidity levels in Herculian, 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 Herculian is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%88%86%79%73%73%69%56%62%81%89%90%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Herculian

In Herculian in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Herculian.

Maximum UV Index Levels in Herculian for May

The chart shows the monthly maximum UV Index (UVI) for Herculian 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 Herculian typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec236789987532
Data source: Herculian 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 Herculian Compares to Other Months

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

This table compares monthly weather conditions in Herculian, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)28 mm (1.1 inches)92%low
February Weather-1°C (30°F)43 mm (1.7 inches)88%moderate
March Weather2°C (36°F)51 mm (2.0 inches)86%high
April Weather7°C (45°F)51 mm (2.0 inches)79%high
May Weather12°C (54°F)103 mm (4.1 inches)73%very high
June Weather16°C (62°F)145 mm (5.7 inches)73%very high
July Weather18°C (64°F)101 mm (4.0 inches)68%very high
August Weather18°C (65°F)80 mm (3.2 inches)56%very high
September Weather13°C (56°F)46 mm (1.8 inches)62%high
October Weather8°C (47°F)41 mm (1.6 inches)80%moderate
November Weather3°C (38°F)30 mm (1.2 inches)89%moderate
December Weather-1°C (31°F)55 mm (2.2 inches)90%low

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