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April Weather in Karlovo, Bulgaria

Last updated: August 22, 2025

In April, the average temperature in Karlovo, Bulgaria is a cool 9°C (49°F). Expect a range from a brisk -5°C (24°F) at its lowest to a pleasant 25°C (78°F) at its peak. With an average of 69 mm (2.7 in) of precipitation over 12 days, coupled with an average humidity of 71%, this month presents a refreshing, albeit occasionally wet, climate.

April Temperature in Karlovo

In April in Karlovo, the average temperature is 9°C (49°F), with maximums reaching 25°C (78°F) and minimums dropping as low as -5°C (24°F). This offers a diverse range of weather, making it essential to pack both warm and light clothing for your trip.

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

The chart illustrates April temperature patterns in Karlovo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Karlovo, April typically has an average temperature of 9°C (49°F), with highs reaching up to 25°C (78°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec313640495864686962524335
Data source: Temperature data for Karlovo 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.

April Precipitation in Karlovo

In Karlovo in April, the precipitation amount is 69 mm (2.7 in) over the span of 12 days.

April Precipitation Trends in Karlovo

The chart displays monthly precipitation patterns in Karlovo, 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 Karlovo, April typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec565789691211671576042675581
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Karlovo

In Karlovo in April, humidity is 71%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that seeps into your bones, making it essential to dress warmly and plan for cozy indoor activities while exploring the area.

April Average Humidity in Karlovo

This chart illustrates the average monthly humidity levels in Karlovo, 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 Karlovo is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%85%83%71%73%67%68%50%59%79%87%89%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Karlovo

In Karlovo in April, 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 Karlovo.

Maximum UV Index Levels in Karlovo for April

The chart shows the monthly maximum UV Index (UVI) for Karlovo 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 Karlovo typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24789101097632
Data source: Karlovo 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 Karlovo Compares to Other Months

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

This table compares monthly weather conditions in Karlovo, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)56 mm (2.2 inches)89%low
February Weather2°C (36°F)57 mm (2.2 inches)85%moderate
March Weather5°C (40°F)89 mm (3.5 inches)83%high
April Weather9°C (49°F)69 mm (2.7 inches)71%very high
May Weather14°C (58°F)121 mm (4.8 inches)73%very high
June Weather18°C (64°F)167 mm (6.6 inches)67%very high
July Weather20°C (68°F)157 mm (6.2 inches)68%very high
August Weather21°C (70°F)60 mm (2.3 inches)50%very high
September Weather17°C (62°F)42 mm (1.7 inches)59%high
October Weather11°C (52°F)67 mm (2.6 inches)79%high
November Weather6°C (43°F)55 mm (2.2 inches)87%moderate
December Weather2°C (36°F)81 mm (3.2 inches)89%low

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