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Ustka Weather in September
With daytime temperatures of 18°C (64°F) and nighttime lows of 13°C (55°F), September in Ustka brings pleasant temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 93 mm (3.7 in) falls on average.
Rainfall in Ustka in September
On average, there are about 15 days with rain during this month, averaging 93 mm (3.7 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Ustka in September
Daytime temperatures in Ustka reach 18°C (64°F) in September, dropping to 13°C (55°F) at night. Summer occurs in September. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 13°C (55°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Ustka in September
The month brings about 137 hours of sunlight, offering a comfortable mix of sun and overcast.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Ustka.
Ustka Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
18°C (64°F)
Chance of Rain
50%
Precipitation
93 mm (3.7 in)
Rainy days
15 days
Sunshine
137 hours *
Percentage Sunshine
*
* Data from: Koszalin, Poland (61 KM, 38 Miles).
Ustka Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ustka - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ustka typically drop from around 19°C (66°F) at the start of September to approximately 16°C (61°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 13°C (55°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Ustka in September
Browse day-by-day weather records for Ustka spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ustka historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Ustka.
- Ustka recorded its highest September temperature of 31°C (88°F) on September 8, 2024.
- On September 30, 1995, Ustka saw its coldest September day with temperatures maxing out at 8°C (46°F).
- The lowest overnight temperature recorded in September was -3°C (27°F) (September 27, 1986).
Best Places in Poland in September
Find out more about the weather in Poland and which places have the best travel conditions in this month. See all of Poland in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Ustka in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in Ustka in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping8/10 -
Outdoor sports9/10
Ustka 3-Day Forecast
More climate data for Ustka
See the full Ustka climate overview or explore weather in Poland.
Popular in September
Where to go in September - average daytime high across popular destinations.
Poznań
20°C (68°F) Kraków
20°C (68°F) Warsaw20°C (68°F) Gdańsk19°C (66°F) Gdynia
18°C (64°F) Sopot19°C (66°F) Kołobrzeg19°C (66°F) Zakopane17°C (63°F) Bucket list
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