nomadseason

April Weather in Kostel, Slovenia

Last updated: August 27, 2025

In April, the average temperature in Kostel, Slovenia hovers around 9°C (49°F), offering a crisp climate. Be prepared for extremes, as temperatures can dip as low as -14°C (7°F) or soar to 26°C (78°F). Expect 110 mm (4.3 in) of precipitation spread over 12 days, and a moderate humidity level of 73% adds to the atmospheric charm.

April Temperature in Kostel

In April in Kostel, the average temperature is 9°C (49°F), with maximums reaching 26°C (78°F) and minimums dropping as low as -14°C (7°F). It's advisable to pack layers to accommodate the significant temperature fluctuations while exploring the area.

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

The chart illustrates April 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, April typically has an average temperature of 9°C (49°F), with highs reaching up to 26°C (78°F) and lows dropping to around -14°C (7°F).
JanFebMarAprMayJunJulAugSepOctNovDec313741485666686859514335
Data source: Temperature data for Kostel generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Kostel

In Kostel in April, the precipitation amount is 110 mm (4.3 in) over a span of 12 days.

April Precipitation Trends in Kostel

The chart displays monthly precipitation patterns in Kostel, 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 Kostel, April typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec7110981110183108142109159119127139
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

April Humidity in Kostel

In Kostel in April, humidity is 73%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill in the air, making outdoor activities slightly uncomfortable and requiring extra layers for warmth while traveling.

April Average Humidity in Kostel

This chart illustrates the average monthly humidity levels in Kostel, 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 Kostel is approximately 73%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Kostel

In Kostel 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 Kostel.

Maximum UV Index Levels in Kostel for April

The chart shows the monthly maximum UV Index (UVI) for Kostel 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 Kostel typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: Kostel 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 Kostel Compares to Other Months

Weather in Kostel varies notably across the year, with each month offering distinct climate conditions. This page compares April’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 April’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

Compare Kostel's Climate with Cities Worldwide