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Barnaul Weather in September
During September, Barnaul experiences pleasant daytime temperatures of 18°C (64°F) and cooler nights around 6°C (43°F). Some rainfall is typical during this period.
Rainfall in Barnaul in September
The climate data from previous years indicates about 10 days of rain, averaging 49 mm (1.9 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Barnaul in September
September in Barnaul brings typical temperatures with highs around 18°C (64°F) and lows of 6°C (43°F). The difference between afternoon and evening temperatures is usually noticeable. Nights drop to 6°C (43°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Barnaul in September
The days are predominantly sunny, with an estimated total of around 199 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.For Barnaul itself, May, June, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Barnaul Temperature in September
Min Temperature
6°C (43°F)
Max Temperature
18°C (64°F)
Chance of Rain
33%
Precipitation
49 mm (1.9 in)
Rainy days
10 days
Humidity
68%
Sunshine
199 hours
Percentage Sunshine
Barnaul Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Barnaul - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Barnaul typically drop from around 19°C (66°F) at the start of September to approximately 12°C (54°F) by the end. Nights are cold, with lows typically ranging from 2°C (36°F) to 9°C (48°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 Barnaul in September
Browse day-by-day weather records for Barnaul spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Barnaul historical weather extremes in September
Based on weather observations in Barnaul between 1976 and 2026, these are the recorded extremes during September.
- On September 2, 2007, temperatures climbed to 32°C (90°F), marking the warmest September day on record.
- Barnaul registered its coldest September night on September 29, 2004, with temperatures dropping to -5°C (23°F).
Best Places in Russia in September
Find out more about the weather in Russia and which places have the best travel conditions in this month. See all of Russia 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 Barnaul in September
For Barnaul in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Barnaul in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling10/10 -
Walking10/10 -
Barbeque7/10 -
Camping5/10 -
Outdoor sports10/10
Barnaul 3-Day Forecast
More climate data for Barnaul
Temperature Rainfall Sunshine Humidity
See the full Barnaul climate overview or explore weather in Russia.
Popular in September
Where to go in September - average daytime high across popular destinations.
Gelendzhik
24°C (75°F) Anapa
24°C (75°F) Sochi24°C (75°F) Adler24°C (75°F) Moscow
17°C (63°F) Kazan17°C (63°F) Saint Petersburg
16°C (61°F) Yekaterinburg15°C (59°F) Bucket list
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