Last updated: August 27, 2025
Experience the picturesque weather of Jastarnia, Poland in September, where temperatures gracefully range from a delightful maximum of 26°C (78°F) to a cozy minimum of 11°C (51°F), averaging around 16°C (61°F). This month showcases a blend of sun and showers, with 89 mm (3.5 in) of precipitation spread across approximately 15 days, creating a lush and vibrant landscape. You'll find the air saturated with 81% humidity, making it an ideal time for both outdoor adventures and leisurely strolls along the beautiful coast. Embrace the charm of early autumn as Jastarnia transforms into a serene retreat.
In September, Jastarnia experiences a delightful transition as summer gently fades into autumn. With minimum temperatures around 11°C (51°F) and an average of 16°C (61°F), the weather remains pleasantly mild. This month boasts a peak temperature of 26°C (78°F), reminiscent of late summer days, inviting visitors to enjoy the last glimpses of warmth before the chill of autumn sets in. Compared to the preceding months, temperatures begin to moderate, making September a perfect time for outdoor activities amidst the scenic beauty of this charming Polish seaside town. Whether you're strolling along the beach or exploring local sights, the comfortable climate ensures an enjoyable experience.
September marks a notable shift in Jastarnia's weather patterns, as the coastal town experiences its highest precipitation of the year, receiving 89 mm (3.5 in) over 15 days. This increase from August’s 60 mm (2.4 in) suggests a transition into a wetter autumn, setting the stage for the rainier months ahead. Following the summer’s relatively mild showers, September's downpours can bring a refreshing change to the landscape, nourishing the vibrant flora and preparing the scenery for the more intense rainfall in October, which averages 114 mm (4.5 in). As the season progresses, residents and visitors alike can expect the skies to open more frequently, enhancing the classic charm of this charming Polish destination.
As summer fades and autumn approaches, September in Jastarnia, Poland, experiences a notable shift in humidity levels. With an average humidity of 81%, September marks a transitional period where the consistent 76% humidity of the preceding summer months begins to rise. This slight increase reflects the approach of the wetter fall season, yet it remains significantly lower than the peak winter months, where humidity levels soar to 89% in January and February. The gradual fluctuation suggests an evolving climate, where the early autumn month still offers a mix of comfortable breezes, contrasting sharply with the impending dampness of October.
As September rolls into Jastarnia, Poland, the UV Index settles at a moderate level of 5, signaling a shift from the summer's high numbers. With a short burn time of 30 minutes, it's crucial to remain vigilant about sun protection during outdoor activities. This transition reflects a gradual decline from the peak summer levels of 7 in July and June, where high exposure necessitated more caution. As the days start to shorten, the UV exposure remains noteworthy, making September an ideal time to enjoy the outdoors while also being mindful of skin safety. For detailed insights on daily UV levels, visit Jastarnia UV Index.
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As summer gives way to autumn, September in Jastarnia embraces a warm transition with 316 hours of sunshine, marking a notable reduction from the sun-drenched peak of June with its impressive 457 hours. This month stands as a bridge, where the lingering warmth of summer dances with the crispness of fall. Following the vibrant summer months, which witnessed hours of sunshine decline from July and August—both still basking in over 400 hours—September's light provides a gentler, yet vibrant glow. Notably, the 202 hours decrease compared to May's peak signals the gradual shift in seasons, reminding us that even as daylight fades, the beauty of Jastarnia endures in its charming autumn hues.
As September rolls into Jastarnia, Poland, the likelihood of sunny weather sits at 39%, marking a slight dip from the peak summer months. After basking in the warmth of June with 66% sun chances, the sun begins to retreat, though the 39% chance still offers a fair opportunity for bright days. This month transitions between the vibrancy of summer and the cooler embrace of autumn, reflecting a blend of lingering warmth and preparation for changing seasons. As such, visitors can still expect a mix of sun and cloud, perfect for enjoying early fall activities by the coast.
In September, Jastarnia, Poland, experiences a gentle transition as daylight begins to wane, offering about 12 hours of sunlight. Following the vibrant, sun-drenched months of June and July, which boast the year's longest days, September marks a gradual shift towards the shorter, cozier days of autumn. This month serves as a bridge between summer's peak brightness, with 16 hours in May, and the impending cooler months, such as October's 10 hours. Observing this gradual decrement, one can appreciate the rhythm of nature, where each month showcases a unique interplay of light, inviting a contemplative embrace of the changing seasons.
As September sweeps into Jastarnia, Poland, the winds begin to shift subtly, bringing with them a gentle average wind speed of 6.1 m/s (14 mph). This slight uptick from the summer months hints at the transitioning seasons, as the breezes calm from July and August's higher gusts. The winds become more invigorating, yet still remain manageable, inviting locals and visitors alike to enjoy the picturesque coastal views without the harshness of winter's arrival. Looking ahead, October’s winds are expected to pick up again, reaching an average of 7.3 m/s (16 mph), signaling the onset of autumn’s wilder gusts. This interplay of breezes adds a dynamic charm to September days, creating a perfect backdrop for leisurely strolls along the shore.
Weather in Jastarnia varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Jastarnia, focusing on differences in temperature, rainfall, humidity, and UV levels.
September weather is characterized by milder temperatures, with an average of 16°C (61°F) and highs reaching up to 26°C (78°F), making it a pleasant month as summer transitions to fall. The humidity is relatively high at 81%, contributing to a slightly sticky atmosphere, while precipitation averages 89 mm (3.5 in) over about 15 days. In contrast, January brings much colder temperatures, with an average of just 2°C (37°F) and maximums only reaching 10°C (50°F). The air is crisper, with humidity slightly higher at 89%, and less precipitation at 64 mm (2.5 in) over about 14 days. For more detailed insights on January weather specific to Jastarnia, you can visit Jastarnia weather in January.
September and February present striking contrasts in weather patterns. September enjoys a mild temperature range with a minimum of 11°C (51°F) and an average of 16°C (61°F), peaking at 26°C (78°F). With 89 mm (3.5 in) of precipitation spread over 15 days, it tends to be quite humid at 81%. In contrast, February is much colder, with temperatures dipping to a minimum of -8°C (18°F) and averaging around 2°C (36°F), reaching a maximum of 13°C (55°F). The month is drier, with 51 mm (2.0 in) of precipitation over 13 days, but it experiences higher humidity at 89%. For a closer look at February conditions, you can explore Jastarnia weather in February.
In September, the weather is notably warmer, with average temperatures ranging from a mild 11°C (51°F) at night to a maximum of 26°C (78°F) during the day. The month experiences higher precipitation of 89 mm (3.5 in) over approximately 15 days, and humidity levels remain relatively high at 81%. In contrast, March presents a much cooler climate, with temperatures dropping to a minimum of -9°C (16°F) and an average of just 3°C (38°F), peaking at a chilly 10°C (51°F). Precipitation in March is lighter at 51 mm (2.0 in) occurring across 13 days, accompanied by slightly higher humidity at 88%. For more detailed information on the weather in Jastarnia during March, you can check this link: Jastarnia weather in March.
When comparing the weather in September and April, distinct differences become apparent. September typically enjoys a milder climate with average temperatures ranging from 11°C (51°F) at night to 26°C (78°F) during the day, while April struggles to reach a maximum of 16°C (60°F) and can drop to as low as 0°C (33°F). Rainfall also varies significantly; September experiences more precipitation, with 89 mm (3.5 in) spread over 15 days, compared to April's lighter 30 mm (1.2 in) over just 7 days. Additionally, humidity levels are quite similar, with September at 81% and April slightly higher at 84%. For a more detailed look at the weather specifics, Jastarnia weather in April provides valuable insights.
In comparing the weather between September and May, September tends to be warmer, with average temperatures ranging from a minimum of 11°C (51°F) to a maximum of 26°C (78°F), while May's temperatures are cooler, averaging a minimum of 2°C (37°F) and a maximum of 20°C (68°F). Additionally, September experiences higher precipitation levels of 89 mm (3.5 in) over approximately 15 days, compared to May's 50 mm (2.0 in) spread over 9 days. Humidity is slightly higher in September at 81% compared to May's 76%. For a more detailed look at May weather, you can check this link: Jastarnia weather in May.
September weather typically brings mild temperatures, with a minimum of 11°C and a maximum reaching up to 26°C. The average temperature hovers around 16°C, but it also tends to be wetter, averaging 89 mm of precipitation over 15 days and experiencing higher humidity at 81%. In contrast, June offers slightly cooler conditions, with temperatures ranging from a minimum of 9°C to a maximum of 26°C, and an average of 17°C. June is drier as well, with only 51 mm of precipitation spread over just 7 days and a humidity level of 76%. For a detailed look at conditions in June, you can visit Jastarnia weather in June.
When comparing the weather in September to July, we see some notable differences. September tends to be slightly cooler, with average temperatures ranging from a minimum of 11°C (51°F) to a maximum of 26°C (78°F), while July is a bit warmer, with temperature lows of 13°C (56°F) and highs also reaching 26°C (79°F). Precipitation levels are relatively similar, with September receiving 89 mm (3.5 in) over 15 days compared to July's 81 mm (3.2 in) across 12 days. Furthermore, September has a higher humidity level at 81% compared to July's 76%, which contributes to the overall feeling of warmth and dampness in the air. For more detailed insights on the July weather, you can check out Jastarnia weather in July.
In comparing the weather between August and September, September brings cooler temperatures overall, with a minimum of 11°C (51°F) compared to 14°C (58°F) in August. The average temperature in September stands at 16°C (61°F), while August enjoys a warmer average of 19°C (67°F). Although both months experience a fair amount of precipitation, September sees more rain—89 mm (3.5 in) over 15 days—than August, which records 60 mm (2.4 in) over 11 days. Additionally, September has a higher humidity level at 81%, compared to 76% in August. For more detailed insights on August weather, check out Jastarnia weather in August.
September tends to be milder than October, with temperatures ranging from a minimum of 11°C (51°F) and an average of 16°C (61°F), reaching a maximum of 26°C (78°F). In contrast, October experiences cooler temperatures, with lows dropping to 6°C (42°F) and an average of 12°C (54°F), while the highest temperatures reach 19°C (66°F). Furthermore, October sees increased precipitation, totaling 114 mm (4.5 in) over 18 days, compared to September's 89 mm (3.5 in) across 15 days. The humidity levels also rise slightly from September's 81% to October's 86%. For more detailed weather information, you can check Jastarnia weather in October.
In September, the weather is significantly warmer, with average temperatures ranging from a minimum of 11°C (51°F) to a maximum of 26°C (78°F). This month experiences relatively high humidity at 81% and receives about 89 mm (3.5 in) of precipitation over approximately 15 days. In contrast, November sees a notable drop in temperatures, with averages between -1°C (30°F) and 15°C (59°F). The humidity increases to 89%, and while the total precipitation is slightly lower at 77 mm (3.0 in), it falls over 17 days, indicating a more persistent, though less intense, rainfall pattern. For more detailed information, you can check Jastarnia weather in November.
September and December present stark contrasts in weather conditions. In September, temperatures range from a mild 11°C (51°F) at night to a comfortable 26°C (78°F) during the day, with an average of 16°C (61°F). This month also sees about 89 mm (3.5 in) of rain spread over 15 days, accompanied by a humidity level of 81%. Conversely, December ushers in much colder temperatures, with nighttime lows dropping to -4°C (25°F) and daytime highs only reaching a maximum of 10°C (50°F), averaging around 4°C (39°F). Rainfall is somewhat similar, with 81 mm (3.2 in) falling over 17 days, but humidity rises to 89%, creating a chilly, damp atmosphere. For more details on the weather during this winter month, you can visit Jastarnia weather in December.
As September rolls in, Jastarnia experiences a subtle transition from summer warmth to autumn coolness. With average temperatures settling at a comfortable level, the days are still warm, but the evenings bring a refreshing chill that invites cozy gatherings. Additionally, the increased humidity and frequent rainfall mark a noticeable shift in the weather pattern compared to the preceding months, emphasizing the changing seasons. This month may see up to 15 days of precipitation, which adds a layer of dramatic beauty to the coastal scenery. As the landscape transforms, it's a perfect time to embrace the unique charms of Jastarnia. For more insights on what to expect throughout the year, visit Jastarnia Climate.