Kaliningrad weather in September
September in Kaliningrad: nice, a little rain, with clean air — an excellent time to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#4 of 12 months in Kaliningrad · #534 of 1413 destinations to visit in September · comfort 84/100 (tier A)
- Days
- 20°C
- Nights
- 10°C
- Wet days
- 10
- Sun
- 8.9 h
- Humidity
- 76%
- Daylight
- 13 h

Traveller notes on Kaliningrad in September
Notes from nearby Gdańsk (126 km away)
Kaliningrad doesn't have its own notes for September yet — these are about Gdańsk, close enough to share the season.
Regulars are consistent that this coastal city's weather stays changeable this month specifically because of gusts coming off the sea, chilly enough in the mornings and evenings that a sweater or light jacket is standard advice even when the afternoon itself turns pleasant. Our row backs the mild-but-breezy read, 19.8C over 10.4C nights, with 49.5mm of rain across 8.5 days and a real 20 kph wind. Multiple regulars who've returned across several Septembers describe the month as reliably fine overall despite the day-to-day variability, making it a solid choice for both Gdansk and nearby Sopot. The sea holds 19.8C. The record: humidity 76 percent, 8.8 hours of sun and AQI 43.
Other months in Kaliningrad
Kaliningrad forum discussions describe winter here as genuinely harsh and windy, with one visitor's February account calling conditions 'absolutely nasty' - strong wind, grey skies and sub-zero temperatures - and another describing the gusty Baltic wind as cutting through even proper protective clothing. Posters were consistent that winter isn't the season the city shows its best side, contrasted with the milder, sunnier summer months that draw more visitors. The standard advice for a winter visit was real layering - a base shirt, a sweater on hand, and a windproof outer shell - since the exposed, coastal position makes wind chill the dominant discomfort rather than the raw temperature number alone.
Forum posters are candid that winter isn't the best time to visit Kaliningrad - chilly, windy, snow-covered - but they're equally clear it's still an interesting trip if you come prepared. December brings its own compensations: the city gets fully lit up in the evening and decorated for Christmas well before the holiday itself, and posters mention sledding hills, a skating rink and mulled-wine stalls as genuinely enjoyable seasonal touches rather than just something to endure. Museums and indoor cultural attractions are repeatedly named as the practical fallback for the shorter, colder days, with warm layers and waterproof boots treated as non-negotiable regardless of how the forecast looks that particular day.
Kaliningrad's forum shows a real June trip report from travelers who drove in, describing high demand for transport that month specifically. On the Baltic coast, regulars generally point to June as one of the more comfortable months before the region's short, warm summer peaks in July and August.
Add your own note from Kaliningrad's card on the map.
Kaliningrad climate normals — September
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Kaliningrad in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusyBaltic swimming season, school holidays in 3 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Kaliningrad's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherKaliningrad's weather peaks June–August.
Best weatherFair weatherToughest weather
What's on in Kaliningrad in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Baltic swimming season
15 Jun – 15 Sep · usuallySea warm enoughCrowdedThe water is swimmable from mid-June to mid-September, and July-August are the two months the coast resorts at Zelenogradsk and Svetlogorsk are full of Russian holidaymakers. Book the coast, not the city, for August.
- Nature
Migration on the Curonian Spit
15 Aug – 31 Oct · usuallyBirdlife seasonThe spit is a funnel on the eastern Baltic flyway and the ringing station at Rybachy works its traps through the autumn passage, and again in spring. Ringers are on site from April to October.
Nearby, and something's on
Within 300 km of Kaliningrad — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Kaliningrad?
Kaliningrad in September — FAQ
- Is September a good time to visit Kaliningrad?
- September in Kaliningrad: nice, a little rain, with clean air — an excellent time to visit. It ranks #4 of 12 months for Kaliningrad on SeasonMap's comfort score (84/100).
- What is the weather like in Kaliningrad in September?
- In September, Kaliningrad averages a daily high of 19.7°C and a low of 9.7°C, with about 56.9 mm of rain over roughly 9.5 rainy days.
- What is the air quality in Kaliningrad in September?
- Kaliningrad has a mean US Air Quality Index of about 41 in September.
Within 300 km: Warsaw's Chopin concerts in Lazienki on 5 Jul – 27 Sep, and Gdańsk's Polish Film Festival, Gdynia on 21–26 Sep.