Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average UV index in September
Weather in September
Temperature
The start of September signals a decrease in the average high-temperature, transitioning from a pleasant 20.8°C (69.4°F) in August to a moderate 15°C (59°F). Saint Petersburg sees an average low-temperature of 8.8°C (47.8°F) during September.Humidity
In September, the average relative humidity is 80%.Rainfall
In Saint Petersburg, Russia, in September, during 20 rainfall days, 64mm (2.52") of precipitation is typically accumulated. In Saint Petersburg, during the entire year, the rain falls for 173 days and collects up to 662mm (26.06") of precipitation.Snowfall
In Saint Petersburg, snow does not fall in May through September.Sea temperature
In Saint Petersburg, in September, the average water temperature is 14°C (57.2°F).Note: Beware when you're in 14°C (57.2°F) waters; 13°C (55.4°F) is chilling and anything below 10°C (50°F) could cause breathing hindrance and a sudden cold shock, given your physical condition.
Daylight
The average length of the day in September is 12h and 52min.On the first day of the month, sunrise is at 05:55 and sunset at 20:01. On the last day of September, sunrise is at 07:02 and sunset at 18:34 MSK.
Sunshine
In September, the average sunshine is 4.3h.UV index
In Saint Petersburg, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In September, a regular UV index of 3 translates into these guidelines:
Undertake protective steps - Preventing sun damage is advised. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
What is the usual temperature for Saint Petersburg in September?
What is the average humidity in September in Saint Petersburg?
How much does it rain in Saint Petersburg in September?
When it does not snow in Saint Petersburg?
Does it snow in Saint Petersburg in September?
What is the water temperature in September in Saint Petersburg?
How many hours of daylight does Saint Petersburg have in September?
When is the sunrise / sunset in September in Saint Petersburg?
How many hours of sunshine does Saint Petersburg have in September?
How high is the UV index in September in Saint Petersburg?
Average temperature in September
Saint Petersburg, Russia
- Average high temperature in September: 15°C
The warmest month (with the highest average high temperature) is July (23°C).
The months with the lowest average high temperature are January and February (-3°C).
- Average low temperature in September: 8.8°C
The month with the highest average low temperature is July (15°C).
The coldest month (with the lowest average low temperature) is February (-8.5°C).
Average humidity in September
Saint Petersburg, Russia
- Average humidity in September: 80%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is May (65%).
Average rainfall in September
Saint Petersburg, Russia
- Average rainfall in September: 64mm
The wettest month (with the highest rainfall) is August (83mm).
The driest month (with the least rainfall) is April (31mm).
Average rainfall days in September
Saint Petersburg, Russia
- Average rainfall days in September: 20 days
The months with the highest number of rainy days are September and October (20 days).
The month with the least rainy days is February (7 days).
Average snowfall days in September
Saint Petersburg, Russia
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January, February and December (17 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in September
Saint Petersburg, Russia
- Average sea temperature in September: 14°C
The best month for swimming (with the highest average sea temperature) is July (19°C).
The coldest month (with the lowest average sea temperature) is February (-0.3°C).
Average daylight in September /
Average sunshine in September
Saint Petersburg, Russia
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in September: 4h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 0h and 24min).
Average UV index in September
Saint Petersburg, Russia
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 0).
Saint Petersburg, Russia
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