Novosibirsk weather in September
September in Novosibirsk: cool, a little rain, with clean air — a great time to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#5 of 12 months in Novosibirsk · #830 of 1413 destinations to visit in September · comfort 76/100 (tier B)
- Days
- 16°C
- Nights
- 5°C
- Wet days
- 9
- Sun
- 8.4 h
- Humidity
- 71%
- Daylight
- 13 h

Traveller notes on Novosibirsk in September
Other months in Novosibirsk
Forum posters describe Siberian winter travel broadly as cold enough to require good water-resistant boots given icy, sometimes broken-up sidewalks, alongside a heavy windbreaker-style coat, gloves and a warm hat covering the ears. Posters discussing winter conditions across the wider Siberian region cite a wide possible range, from around +5C down to -30C or even -35C depending on the specific stretch of winter. Given the more general nature of the destination-specific detail available, this note leans on that broader pattern for Novosibirsk's own deep-winter February: expect firmly sub-zero conditions with real cold-snap risk, snow-covered streets, and layered, wind-resistant clothing as the non-negotiable basics. Posters generally rate February as a serious cold-weather month for Novosibirsk, workable with full winter gear.
Forum posters describe July-August as the nicest weather window for this part of Siberia, with warm water and generally the best conditions of the year around nearby Lake Baikal, though posters are direct that by the end of August, weather can start turning - wind and rain becoming more likely as the month winds down. Posters discussing other Russian cities at the same time of year cite typical August temperatures around 20-25C, with occasional heat waves pushing higher. Given the limited detailed trip reports specific to Novosibirsk, this broader regional pattern - a warm, pleasant peak through most of August with a real chance of the weather turning by month's end - is the most reliable guide available for planning a visit here.
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Novosibirsk climate normals — September
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Novosibirsk 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.
Shoulder seasonschool holidays in 3 of the markets that fill it, an ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Novosibirsk'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 weatherNovosibirsk's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
Where is Novosibirsk?
Novosibirsk in September — FAQ
- Is September a good time to visit Novosibirsk?
- September in Novosibirsk: cool, a little rain, with clean air — a great time to visit. It ranks #5 of 12 months for Novosibirsk on SeasonMap's comfort score (76/100).
- What is the weather like in Novosibirsk in September?
- In September, Novosibirsk averages a daily high of 15.9°C and a low of 4.7°C, with about 45.4 mm of rain over roughly 9.4 rainy days.
- What is the air quality in Novosibirsk in September?
- Novosibirsk has a mean US Air Quality Index of about 32 in September.