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April Weather in Siuntio, Finland

Last updated: August 23, 2025

In April, the average temperature in Siuntio, Finland hovers around 3°C (39°F), with a minimum that can drop to -10°C (14°F) and a maximum reaching up to 19°C (66°F). This period experiences approximately 40 mm (1.6 in) of precipitation spread over 9 days, resulting in a high average humidity of 86%. Prepare for a chilly yet captivating month!

April Temperature in Siuntio

In April in Siuntio, the average temperature is 3°C (39°F), with maximums reaching 19°C (66°F) and minimums dropping as low as -10°C (14°F). Be prepared for a wide range of temperatures while traveling during this time, so pack accordingly!

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

The chart illustrates April temperature patterns in Siuntio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siuntio, April typically has an average temperature of 3°C (39°F), with highs reaching up to 19°C (66°F) and lows dropping to around -10°C (14°F).
JanFebMarAprMayJunJulAugSepOctNovDec282630385061646254453831
Data source: Temperature data for Siuntio 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 Siuntio

In Siuntio in April, the precipitation amount is 40 mm (1.6 in) over the course of 9 days.

April Precipitation Trends in Siuntio

The chart displays monthly precipitation patterns in Siuntio, 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 Siuntio, April typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec584954405351837865886375
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Siuntio

In Siuntio in April, humidity is 86%. With an average temperature of 3°C (39°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers for comfort while exploring.

April Average Humidity in Siuntio

This chart illustrates the average monthly humidity levels in Siuntio, 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 Siuntio is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%95%93%87%75%75%80%83%90%93%94%95%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Siuntio

In Siuntio 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 Siuntio for better planning.

Maximum UV Index Levels in Siuntio for April

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

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

This table compares monthly weather conditions in Siuntio, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)58 mm (2.3 inches)97%low
February Weather-3°C (26°F)49 mm (1.9 inches)95%low
March Weather-1°C (31°F)54 mm (2.1 inches)93%moderate
April Weather3°C (39°F)40 mm (1.6 inches)86%moderate
May Weather10°C (50°F)53 mm (2.1 inches)75%moderate
June Weather16°C (61°F)51 mm (2.0 inches)75%high
July Weather18°C (64°F)83 mm (3.3 inches)80%high
August Weather16°C (62°F)78 mm (3.1 inches)83%moderate
September Weather12°C (54°F)65 mm (2.6 inches)90%moderate
October Weather7°C (45°F)88 mm (3.5 inches)93%low
November Weather3°C (38°F)63 mm (2.5 inches)94%low
December Weather-1°C (31°F)75 mm (2.9 inches)95%low

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