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January Weather in Gromiljak, Bosnia and Herzegovina

Last updated: August 22, 2025

In January, the average temperature in Gromiljak, Bosnia and Herzegovina hovers around -1°C (31°F), with a frosty minimum dipping to -29°C (-20°F) and a mild maximum reaching 14°C (57°F). Expect a precipitation of 74 mm (2.9 in) over approximately 12 days, coupled with an average humidity of 88%. Prepare for a chilly and damp atmosphere!

January Temperature in Gromiljak

In January in Gromiljak, the average temperature is -1°C (31°F), with maximums reaching 14°C (57°F) and minimums plummeting to -29°C (-20°F). Be prepared for a wide range of temperatures if you're planning to travel during this time.

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

The chart illustrates January temperature patterns in Gromiljak, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gromiljak, January typically has an average temperature of -1°C (31°F), with highs reaching up to 14°C (57°F) and lows dropping to around -29°C (-20°F).
JanFebMarAprMayJunJulAugSepOctNovDec313841495764686961524536
Data source: Temperature data for Gromiljak 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 Gromiljak

In Gromiljak in January, the precipitation amount is 74 mm (2.9 in) over a span of 12 days.

January Precipitation Trends in Gromiljak

The chart displays monthly precipitation patterns in Gromiljak, 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 Gromiljak, January typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec7488928998888848448387142
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Gromiljak

In Gromiljak in January, humidity is 88%. With an average temperature of -1°C (31°F), this humidity feels like a biting cold that penetrates your clothing, making outdoor exploration challenging and the air clingy, adding an extra chill that can make you feel even colder than the temperature suggests.

January Average Humidity in Gromiljak

This chart illustrates the average monthly humidity levels in Gromiljak, 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 Gromiljak is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%82%79%75%74%66%59%53%65%78%85%87%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Gromiljak

In Gromiljak in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Gromiljak, you can visit Hourly UV Index in Gromiljak.

Maximum UV Index Levels in Gromiljak for January

The chart shows the monthly maximum UV Index (UVI) for Gromiljak 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 Gromiljak typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Gromiljak 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 Gromiljak Compares to Other Months

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

This table compares monthly weather conditions in Gromiljak, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)74 mm (2.9 inches)88%low
February Weather3°C (38°F)88 mm (3.5 inches)82%moderate
March Weather5°C (42°F)92 mm (3.6 inches)79%high
April Weather10°C (49°F)89 mm (3.5 inches)75%high
May Weather14°C (57°F)98 mm (3.9 inches)74%very high
June Weather18°C (65°F)88 mm (3.5 inches)66%very high
July Weather20°C (68°F)88 mm (3.4 inches)59%very high
August Weather21°C (70°F)47 mm (1.9 inches)53%very high
September Weather16°C (61°F)44 mm (1.7 inches)65%high
October Weather11°C (52°F)83 mm (3.3 inches)78%moderate
November Weather7°C (45°F)87 mm (3.4 inches)85%moderate
December Weather2°C (37°F)142 mm (5.6 inches)86%low

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