Weather in St. Petersburg in May 2025
- May is usually the driest month of the year in St. Petersburg
Average weather
Average temperature in St. Petersburg in May
Going from a maximum of +23°C during the day to a minimum of -1°C during the night, the temperature in May averages around +16°C.
The average maximum temperature goes up 33% by the end of the month, compared with the beginning of the month, from +9°C to +17°C.
Is St. Petersburg warm or cold in May?
St. Petersburg is typically mild in May.
Maximum temperatures go up compared to the previous month from +9°C to +15°C. The minimum temperature also goes up from 0°C to +5°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in St. Petersburg:
Water temperature in St. Petersburg in May
Water in St. Petersburg in May is Cold. It varies from 0°C to +9°C, with an average of +5°C. The air temperature averaging +15°C is higher than the water temperature.
In May, water temperatures are average relative to the rest of the year:
Can you swim in St. Petersburg in May?
Climate in St. Petersburg in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +9°C | +15°C | +19°C | ||||
| Min. temperature | ||||||
| -14°C | -4°C | +1°C | ||||
| Max. temperature | ||||||
| +25°C | +33°C | +34°C | ||||
| Rainfall | ||||||
| 25 mm | 52 mm | 75 mm | ||||
| Wind | ||||||
| 3 m/s | 2 m/s | 2 m/s | ||||
| Avg. water temperature | ||||||
| +1°C | +5°C | +10°C | ||||
| Humidity | ||||||
| 68% | 64% | 68% | ||||
| Air pressure | ||||||
| 1013 HPa | 1014 HPa | 1011 HPa | ||||
| Sunny days | ||||||
| 8 | 10 | 8 | ||||
| Cloudy days | ||||||
| 6 | 5 | 4 | ||||
| Rainy days | ||||||
| 10 | 15 | 16 | ||||
| Snowy days | ||||||
| 6 | 0 | 0 | ||||
May weather is still as good as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +9°C to +15°C during the day. Prepare for more rain. Average rainfall goes from 25 mm to 52 mm. It feels drier, as humidity decreases from 68% to 64%. Winds are calmer in comparison to April, going down from 3 m/s to 2 m/s on average. The good news is there are likely to be more sunny days in May, from 8 to 10.
June brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in St. Petersburg is gradually increasing during May, going from 4 m/s to 4 m/s over the course of the month.
Rain
How was the weather last May in St. Petersburg?
Climate Change over Years
The climate in St. Petersburg in May has not changed much over the last 43 years.
The average temperature was the lowest in 1987 (+6°C) and the highest in 2020 (+11°C). The driest year was 1992 with only 268 mm of rainfall, and the wettest year was 2022 with 866 mm.
FAQ
Is May a good time to visit St. Petersburg?
Can you sunbathe in St. Petersburg in May?
Can you swim in St. Petersburg in May?
Is St. Petersburg rainy in May?
Is it sunny in St. Petersburg in May?
Other cities in Russia
Monthly weather in St. Petersburg
Source of the data
For this page, we’ve looked at the typical weather in St. Petersburg, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.