December weather forecast
Saint Petersburg, Russia

A stunning night panorama of the lit Kazan Cathedral in Saint Petersburg, Russia
A stunning night panorama of the lit Kazan Cathedral in Saint Petersburg, Russia

Weather in December

December, the first month of the winter in Saint Petersburg, is also a subzero cold month, with an average temperature ranging between max -1.5°C (29.3°F) and min -6.1°C (21°F).

Temperature

In Saint Petersburg, the average high-temperature in December marginally drops from a cold 2°C (35.6°F) in November to a freezing cold -1.5°C (29.3°F). In Saint Petersburg, the average low-temperature is -6.1°C (21°F).

Humidity

The most humid month in Saint Petersburg is December, with an average relative humidity of 87%.

Rainfall

In Saint Petersburg, Russia, in December, it is raining for 10 days, with typically 51mm (2.01") of accumulated precipitation. In Saint Petersburg, during the entire year, the rain falls for 173 days and collects up to 662mm (26.06") of precipitation.

Snowfall

January through April, October through December are months with snowfall in Saint Petersburg. The months with the most snowfall days are January, February and December, with an average of 17 snowfall days.

Sea temperature

In December, the average sea temperature is 2.8°C (37°F).
Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

With an average of 6h and 4min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 09:32 and sunset at 16:02. On the last day of December, in Saint Petersburg, Russia, sunrise is at 10:00 and sunset at 16:02 MSK.

Sunshine

December has the least sunshine of the year in Saint Petersburg, with an average of 0.4h of sunshine.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 0. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 0 in December transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
[Resources]

FAQ

What is the temperature in December in Saint Petersburg?

The average high-temperature, in December, in Saint Petersburg, Russia, is -1.5°C (29.3°F), while the average low-temperature is -6.1°C (21°F).

What is the most humid month in Saint Petersburg?

The most humid month in Saint Petersburg is December, with an average relative humidity of 87%.

What is the average humidity in December in Saint Petersburg?

In Saint Petersburg, the average relative humidity in December is 87%.

How many days does it rain in December in Saint Petersburg?

In Saint Petersburg, in December, during 10 rainfall days, 51mm (2.01") of precipitation is typically accumulated.

When does it snow the most in Saint Petersburg?

The months with the most snowfall days in Saint Petersburg, Russia, are January, February and December, with an average of 17 snowfall days.

How many days does it snow in December in Saint Petersburg?

In Saint Petersburg, Russia, during December, snow falls for 17 days.

What is the sea temperature in December in Saint Petersburg?

In Saint Petersburg, in December, the average water temperature is 2.8°C (37°F). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

What is the month with the shortest days in Saint Petersburg?

The month with the shortest days in Saint Petersburg is December, with an average of 6h and 4min of daylight.

What is the average length of the day in December in Saint Petersburg?

In Saint Petersburg, Russia, the average day length in December is 6h and 4min.

What time are sunrise and sunset in December in Saint Petersburg?

In December, on the first day of the month, sunrise is at 09:32 and sunset at 16:02. On the last day of the month, in Saint Petersburg, Russia, sunrise is at 10:00 and sunset at 16:02 MSK.

What is the month with the least sunshine in Saint Petersburg?

With an average of 0.4h of sunshine, December has the least sunshine of the year in Saint Petersburg, Russia.

How many hours of sunshine does Saint Petersburg have in December?

In Saint Petersburg, Russia, the average sunshine duration in December is 0.4h.

When is the lowest UV index in Saint Petersburg?

January, November and December, with an average maximum UV index of 0, are months with the lowest UV index in Saint Petersburg, Russia.

What is the UV index intensity in December in Saint Petersburg?

In December, the average daily maximum UV index in Saint Petersburg, Russia, is 0. A UV Index estimate of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average UV index

Average temperature in December
Saint Petersburg, Russia

Average temperature in December - Saint Petersburg, Russia
  • Average high temperature in December: -1.5°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 December: -6.1°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).

[Resources]

Average humidity in December
Saint Petersburg, Russia

Average humidity in December - Saint Petersburg, Russia
  • Average humidity in December: 87%

The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is May (65%).

[Resources]

Average rainfall in December
Saint Petersburg, Russia

Average rainfall in December - Saint Petersburg, Russia
  • Average rainfall in December: 51mm

The wettest month (with the highest rainfall) is August (83mm).
The driest month (with the least rainfall) is April (31mm).

[Resources]

Average rainfall days in December
Saint Petersburg, Russia

Average rainfall days in December - Saint Petersburg, Russia
  • Average rainfall days in December: 10 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).

[Resources]

Average snowfall days in December
Saint Petersburg, Russia

Average snowfall days in December - Saint Petersburg, Russia
  • Average snowfall days in December: 17 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).

[Resources]

Average sea temperature in December
Saint Petersburg, Russia

Average sea temperature in December - Saint Petersburg, Russia
  • Average sea temperature in December: 2.8°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).

[Resources]

Average daylight in December /
Average sunshine in December
Saint Petersburg, Russia

Average daylight in December / Average sunshine in December - Saint Petersburg, Russia
  • Average daylight in December: 6h and 4min

The month with the longest days is June (Average daylight: 18h and 41min).
The month with the shortest days is December (Average daylight: 6h and 4min).

  • Average sunshine in December: 0h and 24min

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).

[Resources]

Average UV index in December
Saint Petersburg, Russia

Average UV index in December - Saint Petersburg, Russia
  • Average UV index in December: 0

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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location