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January Weather in Ostarije, Croatia

Last updated: August 23, 2025

In January, the average temperature in Ostarije, Croatia hovers around 1°C (34°F). However, temperatures can vary dramatically, with a minimum of -18°C (-1°F) and a peak of 15°C (59°F). You'll also experience a fair share of rain, with about 74 mm (2.9 in) of precipitation spread over 11 days. Don't forget to bundle up, as the average humidity stands at a brisk 89%!

January Temperature in Ostarije

In January in Ostarije, the average temperature is 1°C (34°F), with maximums reaching 15°C (59°F) and minimums dropping to as low as -18°C (-1°F). Travelers should be prepared for a wide range of temperatures and dress in layers to ensure comfort throughout the day.

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

The chart illustrates January temperature patterns in Ostarije, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ostarije, January typically has an average temperature of 1°C (34°F), with highs reaching up to 15°C (59°F) and lows dropping to around -18°C (-1°F).
JanFebMarAprMayJunJulAugSepOctNovDec343943515868717161534538
Data source: Temperature data for Ostarije 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 Ostarije

In Ostarije in January, the precipitation amount is 74 mm (2.9 in) spread over the course of 11 days.

January Precipitation Trends in Ostarije

The chart displays monthly precipitation patterns in Ostarije, 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 Ostarije, January typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec741047594155698991144115130131
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Ostarije

In Ostarije in January humidity is 89%. With an average temperature of 1°C (34°F), this humidity feels like a chilling dampness that seeps into your bones, making travel uncomfortable and requiring extra layers to combat the cold and moisture.

January Average Humidity in Ostarije

This chart illustrates the average monthly humidity levels in Ostarije, 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 Ostarije is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%83%75%72%70%69%64%51%62%81%87%88%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Ostarije

In Ostarije 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 Ostarije, you can visit Hourly UV Index in Ostarije.

Maximum UV Index Levels in Ostarije for January

The chart shows the monthly maximum UV Index (UVI) for Ostarije 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 Ostarije typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: Ostarije 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 Ostarije Compares to Other Months

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

This table compares monthly weather conditions in Ostarije, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)74 mm (2.9 inches)89%low
February Weather4°C (40°F)104 mm (4.1 inches)83%moderate
March Weather6°C (43°F)75 mm (3.0 inches)75%moderate
April Weather11°C (51°F)93 mm (3.7 inches)72%high
May Weather15°C (59°F)155 mm (6.1 inches)70%very high
June Weather20°C (69°F)69 mm (2.7 inches)69%very high
July Weather22°C (71°F)89 mm (3.5 inches)64%very high
August Weather22°C (71°F)91 mm (3.6 inches)51%very high
September Weather16°C (61°F)144 mm (5.7 inches)62%high
October Weather12°C (53°F)115 mm (4.5 inches)81%moderate
November Weather7°C (45°F)130 mm (5.1 inches)87%moderate
December Weather3°C (38°F)131 mm (5.2 inches)88%low

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