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January Weather in Merimasku, Finland

Last updated: August 23, 2025

In January, the average temperature in Merimasku, Finland hovers around -1°C (30°F), with extremes ranging from a chilly -19°C (-3°F) to a mild 8°C (46°F). Expect precipitation of about 47 mm (1.8 in) over 9 days, paired with an average humidity level of 92%, creating a notably brisk atmosphere.

January Temperature in Merimasku

In January in Merimasku, the average temperature is -1°C (30°F). The maximum can reach 8°C (46°F), while the minimum can dip as low as -19°C (-3°F). Be sure to pack warm clothing to stay comfortable during your travels.

January Weather in Merimasku: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Merimasku, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Merimasku, January typically has an average temperature of -1°C (30°F), with highs reaching up to 8°C (46°F) and lows dropping to around -19°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec302732394960646255464033
Data source: Temperature data for Merimasku 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.

January Precipitation in Merimasku

In Merimasku in January, the total precipitation amount is 47 mm (1.8 in), which falls over the course of 9 days.

January Precipitation Trends in Merimasku

The chart displays monthly precipitation patterns in Merimasku, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Merimasku, January typically receives around 47 mm (1.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec474143293840587067875980
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Merimasku

In Merimasku in January humidity is 92%. With an average temperature of -1°C (30°F), this humidity feels like an icy blanket wrapping around you, making outdoor activities challenging and requiring extra layers to stay warm and dry while traveling.

January Average Humidity in Merimasku

This chart illustrates the average monthly humidity levels in Merimasku, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Merimasku is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%89%85%77%78%78%79%86%90%91%89%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Merimasku

In Merimasku in January, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Merimasku.

Maximum UV Index Levels in Merimasku for January

The chart shows the monthly maximum UV Index (UVI) for Merimasku in January, 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 January, the maximum UV index in Merimasku typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113457754211
Data source: Merimasku January 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 January Weather in Merimasku Compares to Other Months

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

This table compares monthly weather conditions in Merimasku, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)47 mm (1.8 inches)92%low
February Weather-3°C (27°F)41 mm (1.6 inches)90%low
March Weather0°C (32°F)43 mm (1.7 inches)89%moderate
April Weather4°C (39°F)29 mm (1.1 inches)85%moderate
May Weather9°C (49°F)38 mm (1.5 inches)77%moderate
June Weather16°C (61°F)40 mm (1.6 inches)78%high
July Weather18°C (65°F)58 mm (2.3 inches)78%high
August Weather17°C (63°F)70 mm (2.7 inches)79%moderate
September Weather13°C (55°F)67 mm (2.6 inches)86%moderate
October Weather8°C (46°F)87 mm (3.4 inches)90%low
November Weather4°C (40°F)59 mm (2.3 inches)91%low
December Weather1°C (33°F)80 mm (3.1 inches)89%low

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