Petropavlovsk-Kamchatsky weather in September
Russia

September in Petropavlovsk-Kamchatsky: cool, rainy, with clean air — a great time to visit.
#4 of 12 months in Petropavlovsk-Kamchatsky · #727 of 1383 destinations to visit in September · comfort 79/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Petropavlovsk-Kamchatsky in September
No notes about September yet — the year-round notes are on Petropavlovsk-Kamchatsky's overview. Open Petropavlovsk-Kamchatsky on the map to add the first one.
Petropavlovsk-Kamchatsky climate normals — September
| Daytime high | 15°C / 59°F | 🙂 cool |
|---|---|---|
| Nighttime low | 6°C / 42°F | |
| Feels like (high) | 12°C / 54°F | |
| Sea temperature | 12°C / 54°F | 🥶 cold sea |
| Rainfall | 111 mm / 4.4 in | 🌧 rainy |
| Rainy days | 11 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 5°C / 42°F | |
| Sunshine | 8.3 h/day | |
| Daylight | 12.7 h | |
| Wind | 22 km/h / 13 mph | |
| Snowfall | 0.1 cm / 0 in | |
| Air quality (US AQI) | 23 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Petropavlovsk-Kamchatsky 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 Petropavlovsk-Kamchatsky'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 weatherPetropavlovsk-Kamchatsky's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Petropavlovsk-Kamchatsky in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Volcanic ash and flight delays
1 Jan – 31 DecVolcanic activityClosuresSeveral volcanoes within sight of the city are active in any given year, and an ash cloud closes the airport or the trails around it at no notice. Aviation colour codes are published daily. Source ↗
- Rule
Valley of Geysers permit flights
1 Jun – 30 Sep · usuallyBook earlyClosuresThe valley sits inside Kronotsky reserve and is reachable only on a permitted helicopter day with a ranger. Flights go when the caldera weather allows, so operators tell you to hold a spare day. Source ↗
- Nature
Salmon run
15 Jun – 15 Sep · usuallyWildlife seasonSix species come up the rivers through the summer, in the largest run of wild Pacific salmon anywhere. Everything else on the peninsula, bears included, arranges itself around it.
- Season
Volcano trekking season
1 Jul – 20 Sep · usuallyTrail seasonThe tracks out to Mutnovsky and Gorely only clear of snow in July, and are impassable again by late September. Avachinsky is the one climbable in a long day from the city.
- Nature
Brown bears at Kuril Lake
15 Jul – 20 Sep · usuallyWildlife seasonBook earlyBears gather at the lake in the south reserve while the sockeye are spawning, and access is by helicopter with a permit and a ranger. Places are sold months ahead. Source ↗
- Nature
Berry and mushroom season
1 Aug – 20 Sep · usuallyForaging seasonCrowberry, blueberry and cloudberry come on across the tundra in August and the mushrooms follow. Half the city drives out at weekends with buckets, which is why the tracks are busy.
Where is Petropavlovsk-Kamchatsky?
Petropavlovsk-Kamchatsky in September — FAQ
- Is September a good time to visit Petropavlovsk-Kamchatsky?
- September in Petropavlovsk-Kamchatsky: cool, rainy, with clean air — a great time to visit. It ranks #4 of 12 months for Petropavlovsk-Kamchatsky on SeasonMap's comfort score (79/100).
- What is the weather like in Petropavlovsk-Kamchatsky in September?
- In September, Petropavlovsk-Kamchatsky averages a daily high of 15°C and a low of 5.6°C, with about 110.5 mm of rain over roughly 10.9 rainy days.
- What is the air quality in Petropavlovsk-Kamchatsky in September?
- Petropavlovsk-Kamchatsky has a mean US Air Quality Index of about 23 in September.