Last updated: August 27, 2025
In January, Jastarnia, Poland experiences a chill that defines winter, with temperatures ranging from a brisk maximum of 10°C (50°F) to a biting minimum of -7°C (19°F), averaging around 2°C (37°F). As the days unfold, residents and visitors alike should prepare for moderate precipitation, totaling 64 mm (2.5 in) over approximately 14 days, which contributes to the region's damp atmosphere. With humidity levels hovering at a high 89%, the cold air feels even more penetrating, making warm clothing a necessity for anyone exploring this coastal gem during the heart of winter.
In Jastarnia, Poland, January brings a chilly embrace, with temperatures ranging from a brisk -7°C (19°F) as a minimum to a pleasant 10°C (50°F) at its peak. The average temperature hovers around 2°C (37°F), setting a wintry backdrop that characterizes the month. As winter deepens, January stands out with its sharp chill compared to the milder months that follow. Notably, the maximum temperatures see a gradual increase in February, reaching up to 13°C (55°F), and by April, the warmth begins to emerge, marking a transition towards spring. This trend reflects a natural ebb and flow, teasing the arrival of milder weather as the year progresses, with January's cold serving as a stark contrast to the ever-warming months ahead.
January in Jastarnia, Poland, brings an average precipitation of 64 mm (2.5 in), spread over 14 rainy days. This marks a notable start to the year, where moisture levels begin to taper off in the following months. In contrast, February and March experience a slight reduction in rainfall, both averaging 51 mm (2.0 in) but with one less rainy day, hinting at a gradual transition to drier conditions. As spring approaches, April sees a significant dip, with only 30 mm (1.2 in) over just 7 days, suggesting clearer skies ahead. This trend of decreasing precipitation continues into the warmer months, yet July and September present notable peaks with 81 mm (3.2 in) and 89 mm (3.5 in) respectively, indicating that while winter may be wetter, summer rainfall can also be substantial, particularly during seasonal transitions. Overall, January serves as a pivotal month as Jastarnia shakes off winter's grip, gradually easing into the variability of early spring.
In January, Jastarnia experiences high humidity levels, consistently sitting at 89%—a trend that persists into February and November. This high moisture in the air contributes to a chilly, damp atmosphere typical of winter. As the seasons shift into spring, humidity slightly decreases to 88% in March and further drops to 84% by April, indicating a gradual transition towards drier weather. The warmth of summer brings about a stabilized humidity level of 76% from June to August, offering a more comfortable environment. As autumn approaches, humidity begins to rise again, peaking at 86% in October before settling back at 89% in December. Overall, Jastarnia showcases a distinct seasonal rhythm in humidity, marked by its winter peaks and summer lulls.
In January, Jastarnia experiences a low UV Index of 1, where sun exposure is minimal and the risk of sunburn is slight, allowing for a comfortable burn time of 45 minutes. As the months progress towards spring, February maintains this low index, but by March, the index rises to 4, indicating a moderate level of UV radiation and a shorter burn time of 30 minutes. The trend continues upward through April and into the summer, peaking with July’s high index of 7, which emphasizes the necessity for sun protection during peak hours as burn time decreases to just 25 minutes. As summer fades into autumn, the UV Index gently declines, landing back at 1 by November and December, mirroring the beginning of the year. This seasonal variation underscores the importance of being mindful of UV levels throughout the year. For more detailed information, visit Jastarnia UV Index.
UV Risk Categories
In January, Jastarnia basks in a modest 99 hours of sunshine, setting the stage for the year ahead. As winter gives way to spring, February sees a significant increase, with 192 hours of sunlight welcoming the promise of warmer days. The trend continues to blossom in March, which boasts 266 hours, while April and May shine even brighter, reaching 362 and 433 hours respectively. The sun's presence peaks in June at an impressive 457 hours, just before slightly tapering off through the summer months of July and August, which offer 444 and 400 hours respectively. As autumn arrives, the daylight begins to diminish, with September still enjoying a healthy 316 hours before the year closes with the quieter months of October, November, and December, bringing 242, 155, and 126 hours of sunlight. This rhythmic dance of light throughout the year creates a captivating climatic tapestry, inviting both locals and visitors to revel in each seasonal shift.
In Jastarnia, Poland, January tends to be one of the least sunny months of the year, with only a 10% chance of sunshine. This starkly contrasts with the increasing probabilities as the year progresses; February sees a notable rise to 32%, and by March, the likelihood climbs further to 38%. As spring approaches, the weather improves significantly, with April reaching a pleasant 45% chance of sun, followed by May's close 42%. This upward trend continues into the summer months, culminating in the higher odds of clear skies in June at 66%. Thus, while January may offer limited sunshine, it's just the beginning of a gradual transition towards brighter days ahead.
In Jastarnia, Poland, January welcomes just 7 hours of daylight, a time when the days are at their shortest, hinting at the depths of winter. As the year progresses into February, daylight increases to 9 hours, gradually infusing a sense of hope and anticipation. The momentum continues through March with 11 hours, ushering in the first signs of spring. By April, daylight expands to 14 hours, and in May, the long days reach 16 hours, bringing with them vibrant colors and blooming life. The peak of summer arrives in June, boasting 17 hours of daylight, casting a warm glow over the landscape. While July still offers 16 hours, August begins the gentle slide back into shorter days with 14 hours of light. By September, the daylight reduces to 12 hours, leading into the cooler autumn months. In October, the shift is palpable with only 10 hours, followed by November's 8 hours, and once again, December concludes the year with 7 hours of daylight, bringing the cycle full circle. This rhythmic dance of daylight highlights not only the changing seasons but also the captivating beauty of Jastarnia throughout the year.
In January, Jastarnia experiences an average wind speed of 6.8 m/s (15 mph), setting the pace for the winter months. As the year unfolds, wind speeds exhibit a slight upward trend, peaking in December at 7.9 m/s (18 mph). February follows closely with 7.2 m/s (16 mph), while March sees a mild dip to 6.6 m/s (15 mph). The arrival of spring brings a gradual decline in winds, reaching a low of 4.8 m/s (11 mph) by June, making for calmer days by the seaside. However, as autumn approaches, wind speeds start to surge again, with October and November showing notable increases, ultimately leading to the breezy December winds. This pattern reflects a compelling cycle of fluctuating winds, with winter offering brisk gales, followed by a serene summer, and closing with invigorating autumn gusts that keep Jastarnia's charm alive year-round.
Weather in Jastarnia varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Jastarnia, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, temperatures typically range from a minimum of -7°C (19°F) to a maximum of 10°C (50°F), with an average temperature of 2°C (37°F). The month experiences about 64 mm (2.5 in) of precipitation over 14 days, accompanied by high humidity of 89%. In contrast, February offers slightly colder conditions, with minimum temperatures dropping to -8°C (18°F) and maximums reaching 13°C (55°F). The average temperature remains steady at 2°C (36°F), but precipitation decreases to 51 mm (2.0 in) over 13 days, while humidity levels remain consistent at 89%. For a more detailed look at February weather, you can check Jastarnia weather in February.
In January, temperatures generally range from a brisk -7°C (19°F) at night to a milder 10°C (50°F) during the day, with an average of 2°C (37°F). The month sees quite a bit of precipitation, totaling 64 mm (2.5 in) over about 14 days, and the air remains quite humid, with levels around 89%.
In comparison, March experiences slightly colder nights with a minimum of -9°C (16°F) and an average temperature of 3°C (38°F). The maximum remains similar at 10°C (51°F). Precipitation decreases to 51 mm (2.0 in) over about 13 days, and humidity levels drop slightly to 88%. For more detailed information on weather conditions during this time, you can explore Jastarnia weather in March.
January weather is typically much colder than in April, with temperatures ranging from a minimum of -7°C (19°F) to a maximum of 10°C (50°F), along with an average temperature of 2°C (37°F). Precipitation is also more frequent in January, with 64 mm (2.5 in) spread over 14 days, accompanied by high humidity at 89%. In contrast, April experiences milder conditions, featuring temperatures that range from 0°C (33°F) to a maximum of 16°C (60°F) and an average of 6°C (43°F). Rainfall in April is notably less, totaling 30 mm (1.2 in) over just 7 days, with a slightly lower humidity level at 84%. For a closer look at April weather specifics, you can check Jastarnia weather in April.
January and May present strikingly different weather conditions. In January, temperatures range from a chilly -7°C (19°F) to a mild 10°C (50°F), with an average of just 2°C (37°F). The month sees considerable precipitation of 64 mm (2.5 in) over 14 days, accompanied by high humidity at 89%. In contrast, May offers a more pleasant climate, with temperatures ranging from 2°C (37°F) to a warm 20°C (68°F) and an average of 10°C (51°F). Precipitation decreases to 50 mm (2.0 in) across only 9 days, and humidity drops to a more comfortable 76%. For those interested in a deeper look into May weather, visit Jastarnia weather in May.
In January, the weather is quite cold, with temperatures ranging from a chilling minimum of -7°C (19°F) to a maximum of 10°C (50°F) and an average temperature of 2°C (37°F). The humidity is high at 89%, and precipitation occurs on about 14 days, totaling 64 mm (2.5 in). In contrast, June brings much warmer conditions, with temperatures ranging from a minimum of 9°C (48°F) to a comfortable maximum of 26°C (79°F) and an average of 17°C (62°F). The humidity drops to 76%, and rainfall is less frequent, occurring on only 7 days with a total precipitation of 51 mm (2.0 in). For more detailed information, you can check Jastarnia weather in June.
January and July present stark contrasts in weather. In January, temperatures can plummet to a chilly -7°C (19°F) at night, with an average of 2°C (37°F) during the day and a maximum reaching just 10°C (50°F). This month also experiences high humidity levels at 89% and sees around 64 mm (2.5 in) of precipitation over approximately 14 days. In contrast, July brings much warmer conditions, with nighttime temperatures as low as 13°C (56°F) and daytime averages of 18°C (65°F). Maximum temperatures can soar to 26°C (79°F), while precipitation increases slightly to 81 mm (3.2 in) over 12 days, culminating in a more comfortable humidity level of 76%. For those interested in exploring the summer climate, you can find more details here: Jastarnia weather in July.
January and August present markedly different weather conditions. In January, temperatures can drop as low as -7°C (19°F), with an average of 2°C (37°F) and a maximum of 10°C (50°F). This month also experiences considerable precipitation, totaling 64 mm (2.5 in) over approximately 14 days, accompanied by high humidity levels of 89%. In contrast, August boasts a much warmer climate, with minimum temperatures around 14°C (58°F) and reaching up to 27°C (81°F) during peak hours. The average temperature in August is a pleasant 19°C (67°F), and it receives slightly less precipitation at 60 mm (2.4 in) over 11 days, with a lower humidity of 76%. For more information about the weather specifically in August, you can visit Jastarnia weather in August.
In January, the weather is characterized by cold temperatures, with minimums dropping to -7°C (19°F) and an average of just 2°C (37°F). Precipitation during this month totals 64 mm (2.5 in), falling over 14 days, while the humidity remains high at 89%. In contrast, September brings a significant warm-up, where temperatures range from a minimum of 11°C (51°F) to a comfortable maximum of 26°C (78°F), with an average of 16°C (61°F). Although September sees slightly higher precipitation at 89 mm (3.5 in) over 15 days, the humidity drops to 81%. For more specific details, you can check Jastarnia weather in September.
In January, the weather tends to be quite cold, with temperatures ranging from a minimum of -7°C (19°F) to a maximum of 10°C (50°F), and an average temperature of 2°C (37°F). The month experiences significant precipitation of around 64 mm (2.5 in) over approximately 14 days, coupled with high humidity levels of 89%.
In contrast, October offers a milder climate, featuring a minimum temperature of 6°C (42°F) and a maximum of 19°C (66°F), leading to a more comfortable average of 12°C (54°F). However, it experiences increased rainfall, with total precipitation reaching 114 mm (4.5 in) across about 18 days, and humidity slightly lower at 86%. For more detailed information about Jastarnia's October weather, you can visit Jastarnia weather in October.
In comparing the weather between January and November, notable differences emerge. January typically experiences colder temperatures, with minimums dipping to -7°C (19°F) and an average of only 2°C (37°F), while November enjoys milder conditions, with minimums around -1°C (30°F) and an average of 8°C (46°F). Additionally, November tends to be wetter, receiving 77 mm (3.0 in) of precipitation over 17 days, compared to January's 64 mm (2.5 in) over 14 days. Despite the increased rainfall in November, both months share a high humidity of 89%. For more specific information about November weather, you can check Jastarnia weather in November.
In comparing the weather between January and December, January tends to be slightly colder, with average temperatures ranging from a minimum of -7°C (19°F) to a maximum of 10°C (50°F), while December sees a milder average of -4°C (25°F) to 10°C (50°F). Both months experience high humidity levels of 89%, but December receives more precipitation at 81 mm (3.2 in) over 17 days compared to January's 64 mm (2.5 in) spread over 14 days. For more details on December weather, you can check Jastarnia weather in December.
As January settles over Jastarnia, the weather feels distinctly different from the milder months of spring and summer. With average temperatures hovering around 2°C (37°F), winter’s chill envelopes the town, making it one of the coldest times of the year. Unlike the drier conditions experienced later, January brings an expected 14 days of precipitation, contributing to a high humidity level of 89%. This combination of cooler temperatures and frequent rain creates a crisp, atmospheric charm unique to the winter season. For those interested in further details about Jastarnia’s seasonal weather patterns, you can explore more at Jastarnia Climate.