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May Weather in Kostel, Slovenia

Last updated: August 27, 2025

In May, the average temperature in Kostel, Slovenia hovers around 13°C (56°F). Visitors should be prepared for a range, with minimums dipping to -1°C (31°F) and highs reaching 28°C (82°F). With 183 mm (7.2 in) of precipitation spread over 20 days, the air feels quite humid, averaging 70% humidity throughout the month.

May Temperature in Kostel

In May in Kostel, the average temperature is 13°C (56°F). Maximum temperatures can reach 28°C (82°F), while the minimum can drop as low as -1°C (31°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates May temperature patterns in Kostel, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kostel, May typically has an average temperature of 13°C (56°F), with highs reaching up to 28°C (82°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec313741485666686859514335
Data source: Temperature data for Kostel 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 Kostel

In Kostel in May, the precipitation amount is 183 mm (7.2 in) during 20 days, indicating a relatively wet period.

May Precipitation Trends in Kostel

The chart displays monthly precipitation patterns in Kostel, 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 Kostel, May typically receives around 183 mm (7.2 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec7110981110183108142109159119127139
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Kostel

In Kostel in May humidity is 70%. With an average temperature of 13°C (56°F), this humidity feels like a chilly embrace, making travel feel a bit damp and heavy. Be prepared for a refreshing yet cool atmosphere that might surprise you as you explore the sights.

May Average Humidity in Kostel

This chart illustrates the average monthly humidity levels in Kostel, 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 Kostel is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%82%73%73%70%69%63%51%64%83%89%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Kostel

In Kostel 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 Kostel.

Maximum UV Index Levels in Kostel for May

The chart shows the monthly maximum UV Index (UVI) for Kostel 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 Kostel typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: Kostel 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 Kostel Compares to Other Months

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

This table compares monthly weather conditions in Kostel, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)71 mm (2.8 inches)88%low
February Weather3°C (37°F)109 mm (4.3 inches)82%moderate
March Weather5°C (41°F)81 mm (3.2 inches)73%moderate
April Weather9°C (49°F)110 mm (4.3 inches)73%high
May Weather13°C (56°F)183 mm (7.2 inches)70%very high
June Weather19°C (66°F)108 mm (4.3 inches)69%very high
July Weather20°C (68°F)142 mm (5.6 inches)63%very high
August Weather20°C (68°F)109 mm (4.3 inches)51%very high
September Weather15°C (59°F)159 mm (6.3 inches)64%high
October Weather10°C (51°F)119 mm (4.7 inches)83%moderate
November Weather6°C (43°F)127 mm (5.0 inches)89%moderate
December Weather2°C (36°F)139 mm (5.5 inches)88%low

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