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Weather in Gdansk - 14-day forecast

Detailed weather forecast for Gdansk, Poland: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Gdansk
today🌧️ 18°💧 1.2 mm
Sun🌧️ 18°💧 1.2 mm
Mon☁️ 18°💧 0.1 mm
Tue🌧️ 19°💧 0.2 mm
Wed🌧️ 19°💧 1.1 mm
Thu☁️ 17°💧 0.2 mm
Fri🌧️ 18°💧 2.1 mm
Sat🌧️ 15°💧 5.3 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Thursday 10 Sept in Gdansk, the forecast high is 17°C. Typical daytime temperatures at this time of year range from 16°C to 20°C, so the temperature will be near normal.

18°Cnear normal
usually 17°C–21°C
night: near normal rain: typical rainfall wind: exceptionally strong
18°Cnear normal
usually 16°C–21°C
night: cooler than usual rain: typical rainfall wind: stronger than usual
18°Cnear normal
usually 16°C–21°C
night: near normal rain: typical rainfall wind: lighter than usual
19°Cnear normal
usually 16°C–20°C
night: exceptionally warm rain: typical rainfall wind: typical
19°Cnear normal
usually 16°C–20°C
night: exceptionally warm rain: typical rainfall wind: lighter than usual
17°Cnear normal
usually 16°C–20°C
night: near normal rain: typical rainfall wind: typical
18°Cnear normal
usually 15°C–20°C
night: warmer than usual rain: typical rainfall wind: typical

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
10°20°30° 1981: 19°C1982: 18°C1983: 17°C1984: 16°C1985: 14°C1986: 14°C1987: 16°C1988: 17°C1989: 18°C1990: 16°C1991: 15°C1992: 16°C1993: 14°C1994: 18°C1995: 19°C1996: 14°C1997: 17°C1998: 20°C1999: 22°C2000: 17°C2001: 16°C2002: 21°C2003: 19°C2004: 19°C2005: 23°C2006: 18°C2007: 16°C2008: 20°C2009: 19°C2010: 17°C2011: 19°C2012: 19°C2013: 19°C2014: 20°C2015: 17°C2016: 22°C2017: 17°C2018: 21°C2019: 19°C2020: 18°C2021: 21°C2022: 17°C2023: 24°C2024: 23°C2025: 21°C 2026 forecast: 18°C current forecast 18°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 18°C by day. The coolest year was 1996 (14°C) and the warmest was 2023 (24°C). The current forecast averages 18°C - close to the historical median.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Gdansk

Gdansk - 14-day weather forecast infographic

Gdansk 30 & 45-day weather - long-range outlook

Next 16 days · forecast
17°
around 14° at night · days with rain: 10
Weeks 3-4 · avg for September
18°
around 9° at night · rain chance 47%
Weeks 5-7 · avg for October
12°
around 6° at night · rain chance 52%
The 30 & 45-day outlook for Gdansk: the next 16 days are a numerical forecast updated daily - on average 17° by day and 14° at night. Further out we rely on multi-year climate averages: around 18° in September, and about 12° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Gdansk

Saturday5 September 2026
🌧️18°light rain
sunrise 05:59 · sunset 19:28 · night 14° · evening 16° · rain 1.15 mm · humidity 68% · wind 12 m/s · clouds 73%
Sunday6 September 2026
🌧️18°light rain
sunrise 06:01 · sunset 19:26 · night 12° · evening 17° · rain 1.15 mm · humidity 60% · wind 9 m/s · clouds 12%
Monday7 September 2026
☁️18°overcast clouds
sunrise 06:03 · sunset 19:23 · night 13° · evening 17° · rain 0.12 mm · humidity 62% · wind 5 m/s · clouds 100%
Tuesday8 September 2026
🌧️19°light rain
sunrise 06:05 · sunset 19:21 · night 17° · evening 22° · rain 0.15 mm · humidity 56% · wind 7 m/s · clouds 100%
Wednesday9 September 2026
🌧️19°light rain
sunrise 06:07 · sunset 19:18 · night 16° · evening 19° · rain 1.06 mm · humidity 63% · wind 5 m/s · clouds 100%
Thursday10 September 2026
☁️17°broken clouds
sunrise 06:08 · sunset 19:16 · night 13° · evening 18° · rain 0.18 mm · humidity 58% · wind 7 m/s · clouds 78%
Friday11 September 2026
🌧️18°light rain
sunrise 06:10 · sunset 19:13 · night 14° · evening 15° · rain 2.1 mm · humidity 56% · wind 7 m/s · clouds 100%
Saturday12 September 2026
🌧️15°moderate rain
sunrise 06:12 · sunset 19:11 · night 13° · evening 16° · rain 5.25 mm · humidity 74% · wind 8 m/s · clouds 51%
Sunday13 September 2026
🌧️16°light rain
sunrise 06:14 · sunset 19:08 · night 13° · evening 15° · rain 1.11 mm · humidity 66% · wind 8 m/s · clouds 74%
Monday14 September 2026
🌧️16°light rain
sunrise 06:16 · sunset 19:06 · night 12° · evening 18° · rain 0.15 mm · humidity 58% · wind 6 m/s · clouds 88%
Tuesday15 September 2026
☁️17°broken clouds
sunrise 06:17 · sunset 19:03 · night 13° · evening 19° · rain 23.55 mm · humidity 58% · wind 5 m/s · clouds 77%
Wednesday16 September 2026
☁️20°broken clouds
sunrise 06:19 · sunset 19:00 · night 19° · evening 24° · rain 0.12 mm · humidity 54% · wind 4 m/s · clouds 56%
Thursday17 September 2026
🌧️19°light rain
sunrise 06:21 · sunset 18:58 · night 16° · evening 20° · rain 4.47 mm · humidity 69% · wind 7 m/s · clouds 89%
Friday18 September 2026
🌤️20°scattered clouds
sunrise 06:23 · sunset 18:55 · night 18° · evening 19° · rain 1.26 mm · humidity 63% · wind 3 m/s · clouds 25%
Saturday19 September 2026
🌧️13°light rain
sunrise 06:25 · sunset 18:53 · night 10° · evening 14° · rain 2.95 mm · humidity 80% · wind 8 m/s · clouds 100%
Sunday20 September 2026
☀️15°clear sky
sunrise 06:26 · sunset 18:50 · night 16° · evening 16° · humidity 55% · wind 4 m/s

UV index in Gdansk - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTGdansk03681111+3.9UV MODERATEtoday, daily maxSeek shade around midday. SPF 30+, sunglasses and ahat for longer stays.Unprotected fair skin may burn in about 50 min4Sat5.095Sun6.093Mon7.094Tue8.092Wed9.094Thu10.092Fri11.092Sat12.093Sun13.093Mon14.093Tue15.091Wed16.092Thu17.094Fri18.094Sat19.093Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Gdansk is 4 (moderate) - unprotected fair skin can burn in about 50 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.

Pollen in Gdansk - info for allergy sufferers

PLANT POLLEN · 4-DAY FORECASTGdansktoday5.09tomorrow6.09Mon7.09Tue8.09Grasses-13-nonelowmoderatehighvery highoff season: alder, birch, mugwort, olive, ragweed · values in grains/m³ (daily peak)pogodapodroze.pl · 2026-09-05

Sea temperature - Gdansk

Water today
19°C
Week avg
18°C
Waves today
1 m
How's the water?
cold
16-day sea temperature forecast:
5.09 19°C6.09 19°C7.09 19°C8.09 19°C9.09 18°C10.09 18°C11.09 18°C12.09 18°C13.09 18°C
Average sea temperature through the year:
Jan 3°CFeb 3°CMar 4°CApr 7°CMay 12°CJun 17°CJul 20°CAug 21°CSep 19°COct 14°CNov 10°CDec 6°C
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Gdansk weather through the year

Gdansk - annual climate

Warmest, driest months on average: May, June, July, August.

Upcoming public holidays in Poland: All Saints' Day — 1 November · Independence Day — 11 November · Christmas Eve — 24 December.

Nearby and related places

BydgoszczKlaipedaPoznanKatowiceCzestochowaLodzCracow

FAQ - Gdansk weather

What is the weather like in Gdansk today?
Today it is about 18° during the day and 14° at night, light rain.
How far ahead can I check the forecast for Gdansk?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.