Saint Petersburg weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Good
Best time to visit: June – August
What is the weather like in Saint Petersburg in May?
In May, Saint Petersburg is cool: daytime highs average 14 °C, and nights cool down to about 6 °C. The sea averages 8.5 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain is frequent, with about 10 rainy days and 51 mm in total. All in all, May is a good month for a holiday in Saint Petersburg.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 17 h 3 min04:23 – 21:26
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+3Europe/Moscow
How the score comes together
- Temperatureweight 50 %61 %
- Sunshineweight 20 %87 %
- Few rainy daysweight 30 %60 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Saint Petersburg in May: quick answers
Is Saint Petersburg hot in May?
No. In May, Saint Petersburg is cool: daytime highs average 14 °C and nights drop to about 6 °C.
Can you swim in Saint Petersburg in May?
Only if you don't mind cold water: in May the sea averages just 8.5 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Saint Petersburg in May?
Rain is frequent, with about 10 rainy days and 51 mm in total.
Saint Petersburg month by month
The whole year in Saint PetersburgAll destinations: RussiaWhere to go in MaySea temperature in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences