May 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 May

May, the last month of the spring in Saint Petersburg, is a comfortable month, with an average temperature fluctuating between 7°C (44.6°F) and 16°C (60.8°F).

Temperature

In May, the average high-temperature increases from a chilly 9.3°C (48.7°F) in April to a comfortable 16°C (60.8°F). In May, the average low-temperature is 7°C (44.6°F).

Humidity

The least humid month is May, with an average relative humidity of 65%.

Rainfall

In Saint Petersburg, in May, it is raining for 16 days, with typically 46mm (1.81") of accumulated precipitation. In Saint Petersburg, Russia, during the entire year, the rain falls for 173 days and collects up to 662mm (26.06") of precipitation.

Snowfall

May through September are months without snowfall in Saint Petersburg, Russia.

Sea temperature

In May, the average sea temperature in Saint Petersburg is 5.3°C (41.5°F).
Note: Swimming in 5.3°C (41.5°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day in May is 17h and 11min.
On the first day of the month, sunrise is at 04:56 and sunset at 20:55. On the last day of May, sunrise is at 03:49 and sunset at 22:03 MSK.

Sunshine

The average sunshine in May is 8.4h.

UV index

In Saint Petersburg, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 4 in May interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. 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.
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FAQ

What is the temperature in May in Saint Petersburg?

In May, in Saint Petersburg, Russia, the average high-temperature is 16°C (60.8°F), and the average low-temperature is 7°C (44.6°F).

What is the least humid month in Saint Petersburg?

With an average relative humidity of 65%, May is the least humid month in Saint Petersburg.

What is the average humidity in May in Saint Petersburg?

In Saint Petersburg, the average relative humidity in May is 65%.

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

In Saint Petersburg, Russia, in May, during 16 rainfall days, 46mm (1.81") of precipitation is typically accumulated.

When it does not snow in Saint Petersburg?

May through September are months without snowfall in Saint Petersburg.

Does it snow in Saint Petersburg in May?

In May, in Saint Petersburg, Russia, it doesn't snow. April is the latest month when it typically snows.

How cold is the water in May in Saint Petersburg?

In Saint Petersburg, the average seawater temperature in May is 5.3°C (41.5°F). Swimming in 5.3°C (41.5°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

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

In May, the average day length in Saint Petersburg is 17h and 11min.

When is the sunrise / sunset in May in Saint Petersburg?

On the first day of May in Saint Petersburg, sunrise is at 04:56 and sunset at 20:55. On the last day of the month, sunrise is at 03:49 and sunset at 22:03 MSK.

How long on average sun shines in May in Saint Petersburg?

In Saint Petersburg, the average sunshine duration in May is 8.4h.

What is the UV index reading in May in Saint Petersburg?

In Saint Petersburg, Russia, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average UV index

Average temperature in May
Saint Petersburg, Russia

Average temperature in May - Saint Petersburg, Russia
  • Average high temperature in May: 16°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 May: 7°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).

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Average humidity in May
Saint Petersburg, Russia

Average humidity in May - Saint Petersburg, Russia
  • Average humidity in May: 65%

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

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Average rainfall in May
Saint Petersburg, Russia

Average rainfall in May - Saint Petersburg, Russia
  • Average rainfall in May: 46mm

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

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Average rainfall days in May
Saint Petersburg, Russia

Average rainfall days in May - Saint Petersburg, Russia
  • Average rainfall days in May: 16 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).

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Average snowfall days in May
Saint Petersburg, Russia

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

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Average sea temperature in May
Saint Petersburg, Russia

Average sea temperature in May - Saint Petersburg, Russia
  • Average sea temperature in May: 5.3°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).

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

Average daylight in May / Average sunshine in May - Saint Petersburg, Russia
  • Average daylight in May: 17h and 11min

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 May: 8h 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).

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Average UV index in May
Saint Petersburg, Russia

Average UV index in May - Saint Petersburg, Russia
  • Average UV index in May: 4

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).

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