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January Weather in Iisaku, Estonia

Last updated: August 23, 2025

In January, the average temperature in Iisaku, Estonia hovers around -3°C (27°F). Expect some chilly days, with minimum temperatures dropping to -18°C (1°F) and a possible high of 7°C (44°F). Additionally, precipitation is fairly frequent, totaling 49 mm (1.9 in) over about 12 days, while humidity stays high at an average of 95%. Be prepared for a brisk and damp month!

January Temperature in Iisaku

In January in Iisaku, the average temperature is -3°C (27°F), with maximums reaching 7°C (44°F) and minimums dropping as low as -18°C (1°F). Travelers should prepare for cold and potentially harsh weather conditions during this time.

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

The chart illustrates January temperature patterns in Iisaku, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iisaku, January typically has an average temperature of -3°C (27°F), with highs reaching up to 7°C (44°F) and lows dropping to around -18°C (1°F).
JanFebMarAprMayJunJulAugSepOctNovDec272630395163656355453829
Data source: Temperature data for Iisaku generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Iisaku

In Iisaku in January, the total precipitation amount is 49 mm (1.9 in) spread over 12 days.

January Precipitation Trends in Iisaku

The chart displays monthly precipitation patterns in Iisaku, 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 Iisaku, January typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec4950485062647990741007670
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Iisaku

In Iisaku in January, humidity is 95%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that penetrates your clothes, making every breath feel heavy and damp, which can be quite uncomfortable for traveling.

January Average Humidity in Iisaku

This chart illustrates the average monthly humidity levels in Iisaku, 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 Iisaku is approximately 95%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%93%90%87%73%77%80%84%89%93%93%93%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Iisaku

In Iisaku 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 Iisaku.

Maximum UV Index Levels in Iisaku for January

The chart shows the monthly maximum UV Index (UVI) for Iisaku 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 Iisaku typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457764211
Data source: Iisaku 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 Iisaku Compares to Other Months

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

This table compares monthly weather conditions in Iisaku, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)49 mm (1.9 inches)95%low
February Weather-3°C (26°F)49 mm (1.9 inches)93%low
March Weather-1°C (30°F)48 mm (1.9 inches)90%moderate
April Weather4°C (39°F)50 mm (2.0 inches)87%moderate
May Weather11°C (51°F)62 mm (2.5 inches)73%moderate
June Weather17°C (63°F)64 mm (2.5 inches)77%high
July Weather18°C (66°F)79 mm (3.1 inches)80%high
August Weather17°C (63°F)90 mm (3.6 inches)84%high
September Weather13°C (55°F)74 mm (2.9 inches)89%moderate
October Weather7°C (46°F)100 mm (3.9 inches)92%low
November Weather3°C (38°F)76 mm (3.0 inches)93%low
December Weather-2°C (29°F)70 mm (2.7 inches)93%low

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