Last updated: August 27, 2025
Sopot, Poland, in September offers a delightful blend of mild temperatures and refreshing coastal breezes. The maximum temperature reaches a pleasant 28°C (83°F), while the average hovers around 15°C (59°F), making it a perfect time for outdoor activities. However, visitors should be prepared for some rain, with an average precipitation amount of 79 mm (3.1 in) over 12 days, contributing to the region's lush landscape. The humidity level sits at a comfortable 81%, ensuring a refreshing atmosphere for exploring the charming streets and beautiful beaches of this popular seaside destination.
In September, Sopot, Poland experiences a delightful transition into autumn, with temperatures reflecting the changing season. The average temperature hovers at a comfortable 15°C (59°F), creating a pleasant atmosphere for both locals and visitors. Mornings start off with a mild minimum of 6°C (43°F), while afternoons can warm up to a delightful maximum of 28°C (83°F), allowing for extended outdoor activities. As summer's warmth gradually recedes, the sharp drop from the peak 30°C (86°F) in July becomes strikingly apparent. This month is marked by a more temperate climate, inviting opportunities for leisurely strolls along the coast and enjoying the vibrant scenery as nature begins to embrace the colors of fall.
September in Sopot, Poland, marks a notable transition as the summer season begins to wane. With 79 mm (3.1 in) of precipitation over 12 days, the month experiences a slight uptick in rainfall compared to the drier summer months of June and August but remains lower than the torrential downpours of July, which recorded 104 mm (4.1 in). This increase in precipitation hints at the onset of fall, paving the way for the October rains that further amplify with 85 mm (3.4 in) expected. As the days grow shorter and cooler, the relatively stable rainfall patterns of September suggest a shift towards more consistent autumnal weather, inviting residents and visitors alike to embrace the changing seasons.
In September, Sopot transitions into the autumn season with a noticeable drop in humidity compared to the summer months, registering at 81%. This marks a subtle shift from the consistent 76% levels experienced during the height of summer, suggesting that the coastal city begins to feel slightly drier as the temperatures start to cool. However, September's humidity remains higher than the spring months, indicating a gradual decline from the peak summer conditions, yet still quite a bit more humid than many regions experience in early fall. As the month progresses, residents and visitors can anticipate a crispness in the air, setting the stage for the richer colors and fresher breezes that herald the coming of autumn.
As summer transitions to autumn in Sopot, Poland, the UV Index in September drops to a moderate 5, encouraging outdoor enthusiasts to embrace the still pleasant weather. This shift marks a slight decrease from the high levels experienced in July and August, yet it remains essential to note that the burn time is around 30 minutes—just enough for a leisurely stroll or sunbathing. September's UV Index showcases the typical trend of declining sun exposure as the seasons change, influenced by the shorter days and a sun that's moving lower in the sky. For those planning time outdoors, it’s wise to remain cautious but still enjoy the beauty of early autumn in this coastal gem. For more details, check the Sopot UV Index.
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September in Sopot, Poland, often basks in the warm glow of 307 hours of sunshine, making it a delightful transition from the sun-drenched summer months. Following the peak of 444 hours in June, the sun gradually begins to retreat, but September still holds onto a vibrant golden charm. Interestingly, this month is brighter than October's 238 hours, signaling that the warmth of summer lingers just a bit longer. With the daylight gradually fading as autumn approaches, September offers a perfect opportunity to savor the last rays of summer while enjoying the charming coastal scenery.
In Sopot, Poland, the likelihood of sunny weather in September shows a moderate chance of 36%, reflecting a trend of fluctuating sunshine as the summer transitions into autumn. Notably, the peak of sunny days is found in June, where the probability soars to 61%, while August sees a decline to 30%, suggesting that by September, the warmth of summer is starting to fade yet still offers a decent opportunity for enjoying the sun. Although the chances of sunny weather dip slightly compared to the summer months, September remains a pleasant time to bask in the mild climate before the harsher months set in.
As summer fades into autumn in Sopot, Poland, September greets residents with a gentle transition of daylight. With approximately 12 hours of sunlight, this month offers a warm embrace before the days start to shorten more noticeably. Following the sun-drenched joy of June's 17 hours and the vibrant 16 hours in July, September marks a slight retreat, though still bright enough to enjoy outdoor activities. As the month progresses, daylight begins to wane, feeding into the inevitable 10 hours of October, illustrating nature's rhythm as it prepares for the quieter months ahead. This elegant decrease in daylight serves as a reminder of the changing seasons, each bringing its own unique charm and beauty.
As summer transitions into fall, September in Sopot experiences a gentle shift in wind patterns, with an average wind speed of 4.7 m/s (11 mph). This mild breeze reflects a slight uptick from the languid summer months, echoing the breezy days of August. Notably, September's winds maintain a similar vigor to those of May, offering a comfortable flair perfect for leisurely coastal strolls. As the region approaches October, when winds pick up pace again to 5.7 m/s (13 mph), the September winds serve as a precursor to the changing season, blending warmth with the crispness of autumn.
Weather in Sopot varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sopot, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of September and January, we notice a stark contrast. September experiences much milder temperatures, with an average of 15°C (59°F) and highs reaching up to 28°C (83°F), alongside relatively high humidity at 81%. Precipitation during this month totals 79 mm (3.1 in) over approximately 12 days. In contrast, January presents a much colder climate, with average temperatures plummeting to just 1°C (34°F) and lows that can drop to -13°C (8°F). This month sees less precipitation, totaling 54 mm (2.1 in) over the same number of days, but with even higher humidity at 89%. For a more detailed look at the weather, check out Sopot weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a cool 6°C (43°F) to a warm 28°C (83°F), with an average of 15°C (59°F), making it one of the last hurrahs of summer. This month also experiences 79 mm (3.1 in) of precipitation over approximately 12 days and has a relatively high humidity of 81%. In contrast, February brings much colder temperatures, with a minimum of -13°C (9°F) and a maximum of 13°C (55°F), resulting in an average temperature of just 1°C (34°F). Rainfall is less frequent, totaling 45 mm (1.8 in) over 11 days, although humidity is slightly higher at 89%. For more details on February weather, you can check Sopot weather in February.
September typically offers a more moderate climate compared to March, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 28°C (83°F) and an average of 15°C (59°F). While September experiences relatively higher precipitation at 79 mm (3.1 in) over 12 days, humidity levels are slightly lower at 81%. In contrast, March can be much colder, with temperatures varying from a minimum of -13°C (9°F) to a maximum of 14°C (58°F) and an average of just 3°C (37°F). Precipitation in March is lower at 52 mm (2.0 in) but occurs over slightly more days, 13 in total, and the humidity is higher at 88%. For more details on what to expect, check out Sopot weather in March.
Comparing the weather in September and April reveals some notable differences. September tends to be warmer, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 28°C (83°F), while April sees cooler conditions, with temperatures dipping as low as -3°C (26°F) and peaking at 20°C (69°F). Precipitation levels are also different, as September experiences more rain, totaling 79 mm (3.1 in) over about 12 days, compared to April's 38 mm (1.5 in) spread over 9 days. Furthermore, while both months have high humidity, September's average humidity is slightly lower at 81% compared to April's 84%. For more detailed information on April weather, check out Sopot weather in April.
In comparing the weather between September and May, September typically presents a warmer climate, with average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 28°C (83°F), whereas May features a cooler average, with temperatures dipping as low as 0°C (33°F) and peaking at 24°C (76°F). September also experiences higher levels of precipitation, averaging 79 mm (3.1 in) over 12 rainy days, compared to May's 67 mm (2.6 in) over 13 days, which indicates a slightly wetter month. Additionally, the humidity in September is higher at 81%, compared to 76% in May, contributing to a more muggy feel during early autumn. For more detailed insights into May weather, you can check Sopot weather in May.
In comparing the weather of September and June, we notice that both months have a similar minimum temperature, hovering around 6°C (43°F). However, June generally enjoys a slightly warmer average temperature of 17°C (63°F) compared to September's average of 15°C (59°F). June also features a higher maximum temperature, reaching up to 29°C (85°F), whereas September's maximum peaks at 28°C (83°F). Precipitation levels are slightly lower in June, with 65 mm (2.6 in) over 10 days, compared to September's 79 mm (3.1 in) over 12 days, indicating that September can be a bit wetter. Additionally, June has a lower humidity level at 76% compared to September's 81%, making June feel a bit more comfortable. For more detailed insights, check Sopot weather in June.
In comparing the weather between July and September, July typically experiences warmer temperatures, with a minimum of 10°C (50°F) and an average of 18°C (65°F), peaking at 30°C (86°F). In contrast, September sees cooler averages, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 28°C (83°F) and an overall average of 15°C (59°F). Additionally, July tends to have higher precipitation levels at 104 mm (4.1 in) over 15 days, compared to September’s 79 mm (3.1 in) over 12 days. Humidity levels are also slightly higher in September at 81%, while July holds a relative humidity of 76%. For more detailed insights, you can explore Sopot weather in July.
In September, the temperature range is slightly cooler, with a minimum of 6°C (43°F) and an average of 15°C (59°F) compared to August, which enjoys warmer temperatures with a minimum of 9°C (49°F) and an average of 18°C (65°F). While both months experience similar maximum temperatures, September often reaches up to 28°C (83°F), just shy of August's 29°C (85°F). Precipitation levels increase slightly in September, with 79 mm (3.1 in) over 12 days, compared to August's 71 mm (2.8 in) over 13 days, but September's humidity is higher at 81% compared to August's 76%. For those interested in more detailed weather patterns, you can explore Sopot weather in August.
September and October present a noticeable shift in weather conditions. September typically enjoys milder temperatures, with a minimum of 6°C and a maximum reaching up to 28°C, while the average sits at 15°C. In contrast, October sees cooler temperatures, dropping to a minimum of 3°C and peaking at 20°C, with an overall average of 11°C. Precipitation also increases slightly from September to October, from 79 mm over 12 days to 85 mm over 16 days, contributing to a rise in humidity, which escalates from 81% to 86%. This transition marks the end of warm days, making October feel noticeably chillier. For a more detailed look at October conditions, check out Sopot weather in October.
September weather tends to be much milder compared to November, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 28°C (83°F) and an average of 15°C (59°F). In contrast, November experiences colder temperatures, with minima dropping to -4°C (26°F) and an average of only 6°C (43°F), while the maximum reaches just 15°C (59°F). Rainfall is more common in September, which sees 79 mm (3.1 in) over 12 days, compared to November's 56 mm (2.2 in) over 15 days. Additionally, November has a higher humidity level at 89%, compared to September's 81%. For a more detailed look at the weather conditions, check out Sopot weather in November.
September and December present quite contrasting weather conditions. In September, temperatures range from a mild 6°C (43°F) to a warm 28°C (83°F), with an average of 15°C (59°F). This month experiences relatively lower humidity at 81% and sees about 79 mm (3.1 in) of precipitation over 12 days. In contrast, December brings much colder temperatures, with minimums dropping to -9°C (17°F) and average highs of only 10°C (50°F). The average temperature in December is just 2°C (36°F), and the humidity increases to 89%, while precipitation totals around 63 mm (2.5 in) spread over 15 days. For more detailed insights on conditions in December, check out Sopot weather in December.
As September ushers in the transition to autumn in Sopot, the weather showcases a unique blend of warmth and mild chill, making it distinctly different from the summer months. With temperatures peaking at a comfortable 28°C while averaging around 15°C, visitors can still enjoy pleasant days before the cooler nights set in. However, this month also sees an increase in humidity and an uptick in rainy days, contributing to a total precipitation of 79 mm. Compared to the drier summer, September can be a bit more unpredictable, reminding us of the approaching seasonal changes. For a deeper understanding of Sopot's climate patterns throughout the year, explore Sopot Climate.