Early September 1 September
71°F
Typical afternoon high
32% historical wet-day frequency
Poland · Beach
Gdańsk & Pomerania
in September.
Is September a good time?
Mild days.
About half August's overnight stays.
September averages 67°F afternoons and 63°F seas, with about 8 rain days. Later September is typically cooler.
- Afternoons
- 67°F
- Sea
- 63°F
- Visitor demand
- 49%of August peak
Historical Pomorskie regional averages, not a forecast or a measure of queues. Overnight demand compares average stays per day. Covers Gdańsk, Sopot and Malbork; conditions vary within the region.
Overall match
6.9/10 · scores & prioritiesPlanning to sightsee in Gdańsk? The weather score rates beach conditions. Sightseeing rates very good (8.5/10).
What matters most?
Weather 50% · Crowds 30% · Cost 20%
#2 of 12 months here · Balanced mix
Weather6.3/10Good
CrowdsModerate seasonvs its own year; overnight stays do not measure queuesFor its size, typical for Europe this month
CostModeratefor Europe; Poland-wide price level
Overall combines weather, overnight demand and cost. It does not include sea temperature.
Plan your September
What to expect.
What should I pack?
Afternoons around 67°F (20°C): light layers; nights around 50°F (10°C): a sweater and a light jacket. About 13 hours of daylight. About 8 rain days in a typical September.
Can I swim in September?
The sea averages 63°F. Our swimming guide: cold: short dips, or a wetsuit. Your comfort will vary. This is open water near the coast, not a beach-specific reading.
Monthly coastal averages from NOAA, 2011–2025. Sea temperature is separate from the weather and Overall scores.
A typical day: temperatures & daylightAfternoons, nights, sea temperature & daylight Show detailsHide details
About 13 hours of daylight.
The sun rises about 06:19 and sets about 19:08 (local time, mid-month). Mornings start around 50°F (10°C); afternoons reach about 67°F (20°C). Expect rain on about 8 days in a typical September.
Typical afternoon
67°F (20°C)
average daily high, 15 recent Septembers
Night low
50°F (10°C)
average daily minimum
Sea
63°F (17°C)
cold; open water near the coast, NOAA satellite record 2011–2025
Daylight
12h 49m
on the 15th, computed from latitude
Early, middle or late?
Early or late September?
Early September is typically warmer. The afternoon high averages 71°F on the 1st, versus 62°F on the 30th. Historical wet-day frequency falls from 32% to 28% between those dates.
Mid September 15 September
68°F
Typical afternoon high
29% historical wet-day frequency
Late September 30 September
62°F
Typical afternoon high
28% historical wet-day frequency
Historical daily averages from 2011–2025, smoothed over two weeks. A seasonal pattern, not a forecast. This does not establish which week has the lowest prices or fewest visitors.
Daily calendar & holiday datesSeptember 2027 · historical weather & dated holidays Show calendarHide calendar
September 2027 calendar
Weather shows historical patterns, not a forecast. Holidays and events use the dates shown for 2027.
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
| 171° | 271° | 371° | 471° | 571° | ||
| 670° | 770° | 870° | 969° | 1069° | 1169° | 1269° |
| 1369° | 1469° | 1568° | 1668° | 1767° | 1867° | 1967° |
| 2066° | 2166° | 2265° | 2365° | 2465° | 2564° | 2664° |
| 2763° | 2863° | 2962° | 3062° |
Afternoon high rain likely (25%+) local school holidays public holiday event
School-holiday dates for September 2027 aren't available in our data yet. A day without a school marker doesn't mean schools are open.
Afternoons cool from about 71°F (22°C) in the first week to 63°F (17°C) in the last. The chance of a wet day runs 24–33%.
Crowds and cost
Visitor season
Will it be busy?
Moderate season. September averages 49% of August's overnight stays per day. About half August's overnight stays.
Overnight stays across Pomorskie do not measure queues, day visitors or congestion at individual sights. For its size, typical for Europe this month.
Hotel price season
Will it be cheaper?
About usual. Estimated from national hotel prices and local visitor demand; no measured regional room rate is available.
Fewer overnight stays do not automatically mean cheaper rooms. Check actual quotes for your trip.
Poland as a whole
Below EU average
2024 restaurants and hotels price level: 92 where the EU average is 100. A relative index, not a room rate.
Year-to-year variation
How much does September vary?
Across the recorded years
In the 15 years from 2011 to 2025, the month's afternoons averaged between 63°F (17°C) and 74°F (23°C); in 10 of them they were within 3°F (1.5°C) of the typical 67°F (20°C). Rain days ranged from 2 to 13; half the years had 5–11.
Rain days in each September
Rain days
8
at least 1 mm, typical year; about 12 in a wet year
Mostly sunny days
5 of 30
cloud cover under 30%
Years with a 95°F+ day
0 of 15
no September in the last 15 years had a day at or above 95°F (35°C)
Good weather days
13 of 30
rated very good or better
See every recorded SeptemberHistorical monthly averages, year by year Show detailsHide details
| Year | Afternoon high | Rain days |
|---|---|---|
| 2011 | 67°F | 9 |
| 2012 | 66°F | 8 |
| 2013 | 63°F | 11 |
| 2014 | 68°F | 5 |
| 2015 | 67°F | 11 |
| 2016 | 69°F | 2 |
| 2017 | 64°F | 13 |
| 2018 | 69°F | 5 |
| 2019 | 66°F | 13 |
| 2020 | 69°F | 8 |
| 2021 | 65°F | 7 |
| 2022 | 63°F | 10 |
| 2023 | 74°F | 5 |
| 2024 | 72°F | 7 |
| 2025 | 68°F | 6 |
Checked against official climate averages for Gdansk-Swibno. How we check
Compare dates
August, September
or October?
| Typical conditions | Aug | Sep | Oct |
|---|---|---|---|
| Afternoons | 75°F | 67°F | 57°F |
| Sea | 66°F | 63°F | 56°F |
| Rain days | 10 | 8 | 10 |
| Overnight demand | 100% | 49% | 31% |
August: Warmer afternoons, warmer sea and more rain days than September. More overnight demand. August guide →
October: Cooler afternoons, cooler sea and more rain days than September. Less overnight demand. October guide →
Overnight demand measures accommodation stays, not queues. Sea temperatures are monthly coastal averages.
Compare any of the 12 monthsChoose another month and compare it with September Show comparisonHide comparison
Yellow marks the top three months on the Balanced mix. September stays as your reference.
June to August have a Weather score at least 1.0 point higher than September, but more overnight stays.
Your comparison
September or August?
Overnight stays are 100% of the busiest month.
National hotel prices and local visitor demand suggest well above usual. No measured regional room rate is available.
Read the August guide →| Typical conditions | September | August |
|---|---|---|
| Afternoons | 67°F | 75°F |
| Nights | 50°F | 56°F |
| Sea | 63°F | 66°F |
| Rain days | 8 | 10 |
| Visitor season | Moderate season | Peak season |
| Overall / 10 | 6.9 | 6.3 |
| Month rank | #2 | #4 |
Every month, in detail Show detailsHide details
| Month | Overall | Rank | High | Low | Sea | Rain days | Weather | Visitor season |
|---|---|---|---|---|---|---|---|---|
| January | 3.0 | #9 | 37°F | 27°F | 40°F | 13 | 1.0 | Low season |
| February | 3.0 | #10 | 39°F | 26°F | 38°F | 9 | 1.0 | Low season |
| March | 3.4 | #8 | 47°F | 30°F | 39°F | 8 | 1.4 | Low season |
| April | 5.5 | #6 | 56°F | 37°F | 42°F | 7 | 3.5 | Low season |
| May | 6.8 | #3 | 65°F | 44°F | 49°F | 9 | 5.8 | Moderate season |
| June | 7.2 | #1 | 72°F | 52°F | 59°F | 10 | 7.5 | Busy season |
| July | 6.1 | #5 | 74°F | 56°F | 64°F | 11 | 7.4 | Peak season |
| August | 6.3 | #4 | 75°F | 56°F | 66°F | 10 | 7.8 | Peak season |
| September | 6.9 | #2 | 67°F | 50°F | 63°F | 8 | 6.3 | Moderate season |
| October | 4.7 | #7 | 57°F | 43°F | 56°F | 10 | 2.7 | Low season |
| November | 3.0 | #11 | 46°F | 36°F | 50°F | 10 | 1.0 | Low season |
| December | 3.0 | #12 | 40°F | 31°F | 44°F | 11 | 1.0 | Low season |
Near here
Nearby places in September
Nearby regions, nearest first. Distances are centre to centre, as the crow flies; they are not road distances or journey times.
Toruń & Kuyavia-PomeraniaPoland · about 80 miles
Balanced Overall 7.8 · Very good weather, 69°F (20°C) · Steady all year · Cost moderate
West PomeraniaPoland · about 110 miles
Balanced Overall 6.7 · Good weather, 68°F (20°C) · Moderate season · Cost moderate
Warmia-MasuriaPoland · about 120 miles
Balanced Overall 8.1 · Very good weather, 67°F (20°C) · Moderate season · Cost moderate
Poznań & Greater Polandabout 130 miles
Balanced Overall 7.8 · Very good weather, 70°F (21°C) · Busy season · Cost moderate
WarsawPoland · about 190 miles
Balanced Overall 7.8 · Very good weather, 69°F (21°C) · Steady all year · Cost moderate
Elsewhere in Europe
Better September weather than Gdańsk & Pomerania
Gdańsk & Pomerania's weather ranks 58 of 77 beach regions this month. These beach regions outside Poland have clearly better weather on your dates, nearest first, each compared with Gdańsk & Pomerania.
Friuli Venezia GiuliaItaly · about 590 miles
Very good weather (7.7): 9°F warmer afternoons, 3 more rain days, pricier
Venice & the VenetoItaly · about 650 miles
Very good weather (8.4): 10°F warmer afternoons, pricier
Croatia's coastSplit, Dubrovnik · Croatia · about 690 miles
Very good weather (8.6): 10°F warmer afternoons, pricier
MarcheItaly · about 780 miles
Excellent weather (9.3): 12°F warmer afternoons, pricier
Liguria & the Cinque TerreItaly · about 800 miles
Excellent weather (9.0): 10°F warmer afternoons, busier for its season (busy season), pricier
How we knowSources, regional scope & scoring method Show detailsHide details
It's moderate season, 49% of the busiest month and 10% above its average month. That means about 33,000 overnight visitors on a typical September night across the region, 84% of them from Poland itself. Rentals booked through Airbnb, Booking, Expedia and Tripadvisor add up to 19,000 more: 56 for every 100 counted above. Some are the same properties counted twice.
| Climate suitability (HCI:Beach, 0–100) | 67 |
| How our weather was checked | Official climate averages for Gdansk-Swibno from the national weather service, every month: afternoon highs typically within 1°F (0.5°C), night lows within 1°F (0.5°C). |
| Tourist nights per 1,000 residents per day | 14 |
| Busiest month here | August · 29 |
| Visitors as share of people present | 1.4% |
| Rank among Europe's regions this month | 45th percentile |
| Domestic share of nights | 84% |
| Platform rental nights per 100 counted nights | 56 |
| Visitor share if every platform night were extra | 2.2% |
| National hotel-price season | Poland historical 2024–2025 index: About usual (+2% vs its average month). Not a local room quote. |
| Population used | 2.3 million |
| Statistical region | PL63 · Pomorskie |
Crowds: Eurostat nights spent at tourist accommodation, by month and NUTS 2 region, 2024–2025 average. Overnight visitors per night is the month's nights divided by its days; the per-1,000 figure is Eurostat's, against each year's population. Platform rentals: Eurostat nights booked via Airbnb, Booking, Expedia and Tripadvisor, 2024–2025 average, shown separately because some properties are in both counts. Weather: Holiday Climate Index computed from ERA5 reanalysis with daily highs, night lows and rain days corrected from open national weather-service station records, 2011–2025, population-weighted to the region; day-by-day figures are the same data averaged by date. Heat and rain odds are counted across those years. Sunrise and sunset: NOAA solar equations, local time. Prices: Eurostat price level index and HICP, national. Full method · this region's data.