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April Weather in Karis, Finland

Last updated: August 23, 2025

In Karis, Finland, the average temperature in April hovers around 4°C (39°F), with extremes dipping to -6°C (22°F) and rising to 15°C (59°F). Expect about 36 mm (1.4 in) of precipitation spread across 8 days, contributing to a rather high average humidity of 87%. Be prepared for a mix of chilly days and occasional dampness!

April Temperature in Karis

In April in Karis, the average temperature is 4°C (39°F). The maximum can reach 15°C (59°F) and the minimum can be as low as -6°C (22°F). Be prepared for a range of temperatures and pack accordingly when traveling during this time.

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

The chart illustrates April temperature patterns in Karis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Karis, April typically has an average temperature of 4°C (39°F), with highs reaching up to 15°C (59°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec302832394860646355474033
Data source: Temperature data for Karis 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 Karis

In Karis in April, the precipitation amount is 36 mm (1.4 in) over a period of 8 days.

April Precipitation Trends in Karis

The chart displays monthly precipitation patterns in Karis, 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 Karis, April typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec6050553647467386711107680
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Karis

In Karis in April, humidity is 87%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and gritty, as the air hangs heavy and clings to your skin.

April Average Humidity in Karis

This chart illustrates the average monthly humidity levels in Karis, 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 Karis is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%91%90%87%76%80%80%83%87%90%91%90%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Karis

In Karis in April, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Karis for better planning.

Maximum UV Index Levels in Karis for April

The chart shows the monthly maximum UV Index (UVI) for Karis 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 Karis typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113457754211
Data source: Karis 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 Karis Compares to Other Months

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

This table compares monthly weather conditions in Karis, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)60 mm (2.3 inches)92%low
February Weather-2°C (28°F)50 mm (2.0 inches)91%low
March Weather0°C (32°F)55 mm (2.2 inches)90%moderate
April Weather4°C (39°F)36 mm (1.4 inches)87%moderate
May Weather9°C (48°F)47 mm (1.9 inches)76%moderate
June Weather15°C (60°F)46 mm (1.8 inches)80%high
July Weather18°C (64°F)73 mm (2.9 inches)80%high
August Weather17°C (63°F)86 mm (3.4 inches)83%moderate
September Weather13°C (55°F)71 mm (2.8 inches)87%moderate
October Weather8°C (47°F)110 mm (4.3 inches)90%low
November Weather5°C (41°F)76 mm (3.0 inches)91%low
December Weather1°C (33°F)80 mm (3.1 inches)90%low

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