Saint Petersburg weather in May
In May, Saint Petersburg has an average high of 15 °C60 °F and an average low of 7 °C44 °F, with about 70 mm2.7 in of precipitation. It is the 5th warmest month of the year and ranks 5th for precipitation.
How May compares with other months
Compared with April, May is 7.1 °C12.7 °F warmer on average and wetter by 18 mm0.7 in. Compared with June, May is 4.2 °C7.5 °F cooler on average and drier by 21 mm0.8 in. Daylight lasts about 17.1 hours around the middle of the month. Average relative humidity is 78% and the average cloud amount 63%.
Is May a good time to visit Saint Petersburg?
May is not among the most comfortable months by our comfort score: it is cool (average high 15 °C60 °F) and it is fairly wet (70 mm2.7 in). The most comfortable months in Saint Petersburg are June–August.
What to wear in May
For Saint Petersburg in May, pack long sleeves, a sweater and a medium jacket.
May in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Saint Petersburg | 1560 | 744 | 702.7 |
| Velikiy Novgorod | 1762 | 744 | 803.1 |
| Pskov | 1762 | 745 | 702.8 |
| Lahti | 1559 | 542 | 602.3 |
| Vantaa | 1559 | 542 | 532.1 |
| Helsinki | 1152 | 643 | 481.9 |
| Petrozavodsk | 1457 | 643 | 722.8 |
| Espoo | 1253 | 643 | 491.9 |
| Tallinn | 1355 | 744 | 481.9 |
Nearby places that are more than 1 °C1.8 °F cooler: Helsinki, Petrozavodsk, Espoo and Tallinn.
Other months in Saint Petersburg
- January−6 °C20 °F / −11 °C11 °F
- February−5 °C23 °F / −11 °C12 °F
- March0 °C32 °F / −6 °C21 °F
- April8 °C46 °F / 0 °C32 °F
- May15 °C60 °F / 7 °C44 °F
- June19 °C66 °F / 11 °C52 °F
- July22 °C72 °F / 15 °C58 °F
- August20 °C69 °F / 13 °C55 °F
- September15 °C59 °F / 8 °C47 °F
- October7 °C45 °F / 2 °C36 °F
- November1 °C33 °F / −3 °C27 °F
- December−4 °C25 °F / −8 °C18 °F
Frequently asked questions
How warm is Saint Petersburg in May?
In May the average high in Saint Petersburg is 15 °C (60 °F) and the average low is 7 °C (44 °F).
Does it rain a lot in Saint Petersburg in May?
On average about 70 mm (2.7 in) of precipitation falls in May; it ranks 5th of the 12 months.
Is May the warmest month in Saint Petersburg?
No. The warmest month in Saint Petersburg is July, with an average high of 22 °C (72 °F). The coldest month is January, with an average low of -11 °C (11 °F).
How long is the day in Saint Petersburg in May?
In the middle of May the day in Saint Petersburg lasts about 17.1 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Saint Petersburg in May?
The average relative humidity in May is about 78%. This is a long-term average for the whole day.
How cloudy is Saint Petersburg in May?
On average about 63% of the sky is covered by cloud in May. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.