January Weather in Slunj, Croatia

Last updated: March 17, 2025

January in Slunj, Croatia, presents a chilly yet captivating winter landscape. With maximum temperatures reaching up to 15°C (59°F) and dipping to a brisk -19°C (-1°F), visitors can expect a wide range of temperatures, averaging around 0°C (33°F). The region experiences substantial precipitation, accumulating about 85 mm (3.4 in) over approximately 12 days, contributing to its lush, frosty ambiance. This month boasts an humidity level of 89%, creating an enveloping chill that enhances the stunning winter scenery. Whether exploring charming streets or enjoying the tranquil surroundings, January in Slunj offers a unique blend of cold weather and picturesque beauty.

January Temperature in Slunj

In January, Slunj, Croatia experiences a dramatic temperature range, highlighting the area's cold winter climate. With a chilling minimum of -19°C (-1°F), the average temperature hovers around 0°C (33°F), while the highs can reach a mild 15°C (59°F). This stark contrast suggests that winter in Slunj can be quite varied, combining brisk, frosty days with occasional warmer spells. As the month progresses, a gradual warming trend can be seen leading into February and March, where temperatures begin to rise, signaling the slow approach of spring. Overall, January stands out as a month of icy beauty, setting the scene for the gradual transition to more temperate weather in the following months.

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

The chart illustrates January temperature patterns in Slunj, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec333942505867707060524437
Data source: Temperature data for Slunj 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 Slunj

In January, Slunj, Croatia, experiences an average precipitation of 85 mm (3.4 in) over the course of 12 rainy days. This moderate rainfall sets the tone for the winter season, contributing to the region's lush landscapes. As winter progresses into February, precipitation increases notably to 114 mm (4.5 in), maintaining the same number of rainy days, while March sees a slight dip back to 87 mm (3.4 in), with a similar spread of 13 days of rain. Interestingly, as spring approaches, April and May deliver a significant surge, with 101 mm (4.0 in) and 174 mm (6.8 in) respectively, the latter bringing an increase in rainy days to 19. This trend highlights a clear transition from the drier winter months to a much wetter spring, ultimately leading to a vibrant and revitalized landscape as winter’s chill gives way to warmer, wetter conditions.

January Precipitation Trends in Slunj

The chart displays monthly precipitation patterns in Slunj, 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.
JanFebMarAprMayJunJulAugSepOctNovDec851148710217487114115166130155144
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Slunj

In January, Slunj, Croatia, experiences high humidity levels at 89%, making it one of the most moisture-rich months of the year. This elevated humidity gradually decreases through the following months, with February seeing a notable drop to 83%, and continuing to decline to 75% by March. As spring approaches, humidity levels stabilize, reaching a low of 64% during the dry summer months of July and August. However, as autumn sets in, the humidity begins to rise again, peaking in November at 87% before slightly tapering off to 88% in December. This pattern highlights a significant seasonal shift: from the chilly, damp atmosphere of winter, through the moderate spring, to the dry warmth of summer, eventually returning to the wetter conditions of fall.

January Average Humidity in Slunj

This chart illustrates the average monthly humidity levels in Slunj, with January's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how January's humidity levels compare to other months.
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 Slunj

In January, Slunj, Croatia experiences a low UV Index of 2, allowing for leisurely outdoor activities with a safe burn time of 45 minutes. As the month progresses into February and March, the UV Index gradually climbs to 3 and 5, respectively, indicating a shift to a moderate exposure category, with burn times decreasing to 30 minutes. This upward trend continues into the spring, where April sees a significant jump to a high UV Index of 7 and a burn time of 25 minutes. The summer months, particularly May through August, elevate the UV Index to very high levels between 8 and 9, drastically reducing safe sun exposure to just 15 minutes. As autumn arrives, the UV Index begins to taper off, settling at 3 in November and reverting back to 2 in December, reflecting a return to low exposure levels. This seasonal pattern highlights the importance of sun safety awareness all year round. For more details, visit Slunj UV Index.

Maximum UV Index Levels in Slunj for January

The chart shows the monthly maximum UV Index (UVI) for Slunj 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.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: Slunj 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.

January Sunshine in Slunj

January in Slunj, Croatia, sees around 173 hours of sunshine, marking the beginning of the year with a gentle glow as winter gives way to the approaching spring. As February rolls in, sunlight increases to 228 hours, hinting at the promise of brighter days ahead. This upward trend continues into March with 312 hours, and by April, the sun shines even more brilliantly with 342 hours. The sunny disposition peaks in July, where residents bask in a glorious 428 hours of sunlight, showcasing the region's vibrant summer. While August sees a slight decline to 395 hours, the overall impression is of a consistent and gradual increase in sunshine hours from January to July, before tapering off gently in the fall months. The year concludes with November and December reflecting 202 and 208 hours respectively, reminding us that even in the depths of winter, Slunj holds on to its radiant charm.

Monthly Sunshine Duration in Slunj: January Highlighted

The January sunshine duration represents the total number of hours Slunj experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec173h228h312h342h376h410h428h395h330h293h202h208h
Data source: Slunj January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Slunj During January

In Slunj, Croatia, January brings a modest 23% chance of sunny weather, marking it as one of the cloudier months of the year. As winter transitions into spring, the likelihood of sunshine steadily increases, with February seeing a jump to 39%. The trend continues upward, peaking in March at an impressive 57% before settling around 40% in April. This gradual rise highlights a shift towards more vibrant days as the region shakes off the winter chill. By the time summer rolls around, residents and visitors can enjoy significantly sunnier skies, with the chance of sun reaching up to 60% in June. Thus, while January may not be the sunniest time to visit Slunj, it lays the groundwork for the brighter days to come.

Percentage of Sunny Days in January in Slunj

The chart illustrates the percentage of sunny days in Slunj throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Slunj experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec23%39%57%40%37%60%51%51%55%34%17%29%
Data source: Slunj January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Slunj in January

In Slunj, Croatia, January marks a time when daylight graces the landscape for just 9 hours, a stark contrast to the longer days that follow in the subsequent months. As winter retreats, February ushers in an additional hour of sunlight, paving the way for the gradual elongation of days that builds momentum through the spring. By March, daylight stretches to 11 hours, and as we welcome April, it blossoms to 13 hours—a clear indication of nature's awakening. The days peak in June and July at 15 hours, providing ample time to soak up the beauty of the region. However, as summer bids farewell, daylight begins to wane, dropping to 13 hours in August and gradually tapering down to 8 hours by December. This rhythm of increasing and decreasing daylight beautifully captures the cyclical nature of the seasons in Slunj, inviting both locals and visitors to revel in every sunlit moment.

Average Daylight Hours in Slunj for January

The chart illustrates the variation in daylight duration in Slunj throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 11m10h 24m11h 56m13h 31m14h 51m15h 32m15h 10m13h 59m12h 28m10h 55m9h 32m8h 49m
Data source: Slunj daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Slunj

January in Slunj, Croatia, greets residents and visitors with an average wind speed of 2.3 m/s (5 mph), setting a steady tone for the month. This gentle breeze is mirrored in March, highlighting a consistency that lingers in the early months of the year. However, as winter fades into spring, the winds begin to shift slightly, with February peaking at 2.6 m/s (6 mph) before gradually tapering off in April to 2.2 m/s (5 mph). The trend continues into the warmer months, where winds tend to calm, dropping to a tranquil 1.7-1.8 m/s (4 mph) from June through September. The arrival of autumn ushers in a return to the mild breezes of earlier months, with October again reaching 2.3 m/s (5 mph). Overall, January’s winds serve as a whisper of the seasonal shifts in Slunj, offering a glimpse of the calm that typically characterizes the region's climate as it transitions throughout the year.

Average January Wind Speed in Slunj

The chart displays monthly wind speed patterns in Slunj, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.3 m/s2.62.32.22.41.81.81.71.72.31.82.0
Data source: Slunj January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Slunj Compares to Other Months

The weather in Slunj changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Slunj and find detailed weather information for every month.

January and February present notable differences in weather, with February generally experiencing milder temperatures. In January, temperatures can plummet to a minimum of -19°C (-1°F), but average around 0°C (33°F), while February sees a minimum of -12°C (10°F) and an average rise to 4°C (39°F). Additionally, February has a higher maximum temperature reaching up to 20°C (68°F) compared to January's 15°C (59°F). Precipitation is also greater in February, totaling 114 mm (4.5 in) over 12 days, compared to January's 85 mm (3.4 in) on the same number of days. Humidity sees a slight decrease in February at 83%, down from 89% in January. For more insights, check Slunj weather in February.

In January, the weather is characterized by frigid temperatures, with a minimum of -19°C (-1°F) and an average temperature of around 0°C (33°F). The month experiences considerable humidity at 89% and receives approximately 85 mm (3.4 in) of precipitation over around 12 days. In contrast, March sees a significant rise in temperature, with a minimum of -14°C (7°F) and an average of 6°C (42°F), reaching a maximum of 22°C (71°F). While precipitation remains similar at 87 mm (3.4 in) over 13 days, the humidity drops to 75%. For a detailed look at the weather conditions in March, you can check Slunj weather in March.

In January, the weather typically features quite cold temperatures, with a minimum of -19°C (-1°F) and an average around 0°C (33°F), while maximum temperatures can reach up to 15°C (59°F). The month sees about 85 mm (3.4 in) of precipitation over 12 days, coupled with a high humidity level of 89%. In stark contrast, April experiences a notable warming trend, with minimum temperatures of -9°C (15°F) and an average of 10°C (50°F), peaking at 27°C (81°F). Precipitation increases slightly to 101 mm (4.0 in) over the same number of days, but humidity decreases to 72%. For more details on weather conditions during this month, you can check Slunj weather in April.

In January, temperatures can drop as low as -19°C (-1°F), while averaging around 0°C (33°F) and peaking at 15°C (59°F). This month is characterized by high humidity levels at 89% and experiences about 85 mm (3.4 in) of precipitation over 12 days. In contrast, May brings a significant warming, with minimum temperatures at 0°C (32°F), an average of 14°C (58°F), and maximums reaching 29°C (84°F). Although May sees a higher total precipitation of 174 mm (6.8 in), it occurs over 19 days with a lower humidity of 70%. For more specific details, you can check Slunj weather in May.

In January, the weather is characterized by much colder temperatures, with a minimum of -19°C (1°F) and an average of 0°C (33°F), while reaching a maximum of 15°C (59°F). Precipitation is frequent, occurring on about 12 days, and the humidity remains high at 89%. Conversely, June brings significantly warmer conditions, with a minimum temperature of 7°C (45°F), an average of 20°C (68°F), and a maximum soaring to 36°C (96°F). While precipitation remains similar at 86 mm (3.4 in) over approximately 13 days, the humidity drops to a more comfortable 69%. For more detailed information about the weather in June, visit Slunj weather in June.

In January, the weather is quite frigid, with temperatures plummeting to a minimum of -19°C (-1°F) and averaging around 0°C (33°F). The month experiences considerable humidity at 89%, contributing to the chilly feel, and precipitation occurs on about 12 days, totaling 85 mm (3.4 in). In stark contrast, July brings a significant warmth, featuring a minimum temperature of 9°C (49°F) and an average of 21°C (70°F), with maximums reaching up to 34°C (94°F). While July also sees precipitation on 12 days, the total is slightly higher at 114 mm (4.5 in), and the humidity decreases to a more comfortable 64%. For a closer look at July weather conditions, you can check out Slunj weather in July.

In January, the weather is characterized by much colder temperatures, with minimums reaching as low as -19°C (-1°F) and an average of around 0°C (33°F). The month typically sees significant precipitation of 85 mm (3.4 in) over 12 days, coupled with high humidity levels of 89%, making for a chilly and damp environment. In contrast, August brings a much warmer climate, where minimum temperatures are around 6°C (44°F) with averages soaring to 21°C (70°F) and highs hitting 38°C (101°F). Although August experiences slightly higher precipitation at 115 mm (4.5 in) over 13 days, the humidity drops to a comfortable 51%. For those interested in August weather specifics, you can check Slunj weather in August. The stark differences between these two months highlight the seasonal transition and the varying atmospheres experienced throughout the year.

In January, the weather is characterized by frigid temperatures, with minimums plunging to -19°C (-1°F) and an average of around 0°C (33°F). Despite the cold, there is a range in daily highs reaching up to 15°C (59°F), and it's notably humid with an average humidity of 89%. Precipitation is moderate, occurring over 12 days, totaling 85 mm (3.4 in).

In contrast, September brings a significant warming trend, with minimum temperatures at 2°C (36°F), an average of 16°C (61°F), and peaks reaching 32°C (90°F). This month sees a higher amount of rainfall, totaling 166 mm (6.5 in) over 13 days, while the humidity drops to a more comfortable 62%. The dramatic shift in weather highlights the transition from the harshness of winter to the warmth of early autumn. For those interested in more details, you can check Slunj weather in September.

In January, temperatures can plunge to a minimum of -19°C (-1°F), with an average of around 0°C (33°F) and highs reaching only up to 15°C (59°F). The month is characterized by high humidity at 89% and considerable precipitation, totaling 85 mm (3.4 in) over approximately 12 days. In contrast, October boasts milder conditions, with minimum temperatures only dipping to -1°C (30°F) and average highs around 24°C (76°F). Although October experiences slightly higher precipitation of 129 mm (5.1 in) over 10 days, the humidity is lower at 81%. For more detailed information on October weather, you can check Slunj weather in October.

January and November showcase notable contrasts in weather patterns. January experiences frigid temperatures, with an average resting at 0°C (33°F) and minimums plummeting to -19°C (-1°F), while November offers a milder average of 7°C (44°F) and a minimum of -7°C (19°F). The precipitation in November is also higher, totaling 155 mm (6.1 in) over 15 days compared to January's 85 mm (3.4 in) over 12 days, reflecting a wetter climate as the year moves towards winter. Humidity remains relatively high in both months, at 89% in January and 87% in November, contributing to a chillier feel during the colder month. For more detailed information, check Slunj weather in November.

In January, the weather is colder than in December, with average temperatures hovering around 0°C (33°F) compared to December's average of 3°C (37°F). January experiences a wider range of temperatures, dipping to a minimum of -19°C (-1°F) while December's lowest temperature is milder at -12°C (11°F). Precipitation levels are lower in January, totaling 85 mm (3.4 in) over 12 days, compared to December's 144 mm (5.7 in) over 14 days. Humidity remains relatively high in both months, with January at 89% and December at 88%. For more detailed insight into December weather patterns, you can visit Slunj weather in December.

Compare Slunj's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Slunj

January in Slunj brings a unique chill that starkly contrasts with the warmer months. The average temperature hangs around a brisk 0°C, while the occasional peak can reach a mild 15°C, yet the lows plunge as far down as -19°C. With 85 mm of precipitation spread over 12 days, the air is often saturated, creating a humidity level of 89% that can make the cold feel even more penetrating. This month is characterized by its wintry mix, setting a distinct tone that differs from the lush, vibrant seasons that follow. For more information on the overall climate of Slunj, check out Slunj Climate.