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December Weather in Harku, Estonia

Last updated: August 23, 2025

In December, the average temperature in Harku, Estonia hovers around 0°C (33°F). Visitors should be prepared for a broad temperature range, with minimums dipping to -17°C (2°F) and maximums reaching up to 8°C (46°F). The region experiences significant precipitation, totaling 62 mm (2.4 in) over approximately 16 days, alongside a high average humidity of 90%.

December Temperature in Harku

In December in Harku, the average temperature is 0°C (33°F). Maximum temperatures can reach 8°C (46°F), while minimums can drop as low as -17°C (2°F). Be prepared for a mix of chilly weather and occasional warmth, making it essential to pack layers for your travels.

December Weather in Harku: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Harku, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harku, December typically has an average temperature of 0°C (33°F), with highs reaching up to 8°C (46°F) and lows dropping to around -17°C (2°F).
JanFebMarAprMayJunJulAugSepOctNovDec302833404960646355474032
Data source: Temperature data for Harku 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.

December Precipitation in Harku

In Harku in December, the total precipitation amount is 62 mm (2.4 in) spread over 16 days.

December Precipitation Trends in Harku

The chart displays monthly precipitation patterns in Harku, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Harku, December typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec45494939525365101781086262
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Harku

In Harku in December humidity is 90%. With average temperature 0°C (33°F) this humidity feels like a damp chill that clings to your skin, making every step outside feel heavier and more exhausting for traveling.

December Average Humidity in Harku

This chart illustrates the average monthly humidity levels in Harku, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Harku is approximately 90%, 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in Harku

In Harku in December, 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 Harku.

Maximum UV Index Levels in Harku for December

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

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

This table compares monthly weather conditions in Harku, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)45 mm (1.8 inches)92%low
February Weather-2°C (29°F)49 mm (1.9 inches)91%low
March Weather0°C (33°F)48 mm (1.9 inches)90%moderate
April Weather4°C (40°F)39 mm (1.5 inches)87%moderate
May Weather9°C (49°F)52 mm (2.0 inches)76%moderate
June Weather16°C (60°F)53 mm (2.1 inches)80%high
July Weather18°C (65°F)65 mm (2.6 inches)80%high
August Weather17°C (63°F)101 mm (4.0 inches)83%moderate
September Weather13°C (56°F)78 mm (3.1 inches)87%moderate
October Weather8°C (47°F)108 mm (4.2 inches)90%low
November Weather4°C (40°F)62 mm (2.4 inches)91%low
December Weather0°C (33°F)62 mm (2.4 inches)90%low

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