Saint Petersburg, Russia Climate & Monthly Averages
Saint Petersburg has a humid continental climate. July is the hottest month, averaging 71° by day; January is the coldest at 26°.
Winter sets the pace in Saint Petersburg
Seasons are the whole story in Saint Petersburg. The gap between an average July and an average January is 24°C - warm summers and cold, often snowy winters - which in practice means 71°F (22°C) afternoons at one end of the calendar and 26°F (-3°C) at the other.
July
71° by day 59° at nightJanuary
26° by day 18° at nightThe cold-weather pattern in numbers
July is the warm end of the year, averaging 71°F (22°C) by day and 59°F (15°C) overnight. January is the coolest month, with highs of 26°F (-3°C) and lows near 18°F (-8°C). August is the wettest month at 4.3 inches (110 mm) over 14 days; March is the driest.
Days and nights are about 6°C apart on average - narrower than all but 8% of the 3496 cities in our dataset. Between the average July and the average January lie 24°C, a wider spread than roughly 77% of the cities we track. Sunshine averages 7.2 hours a day over the year - duller than all but 3% of the 3496 cities in our dataset, peaking in June at 14.6 hours. Snow falls on roughly 39 days a year, mostly October through April.
The gridded 2015-2024 daily record for this location tops out at 94°F (34°C) and bottoms at -25°F (-31°C) - decade extremes, not all-time station records.
More climate facts for Saint Petersburg
- Hottest month: July - highs near 71°F (22°C)
- Coldest month: January - highs near 26°F (-3°C)
- Decade extremes (2015-2024): 94°F (34°C) high · -25°F (-31°C) low
- Wettest month: August (14 rainy days) · Sunniest: June (14.6 h sun/day)
- Climate type: humid continental
- Annual swing: 24°C between the average warmest and coolest month · day to night: 6°C
- Snow: about 39 days a year
- Months with freezing average lows: 6
- Average humidity: 80%
From snow season to the warmest stretch in Saint Petersburg
Spring (March through May)
Spring in Saint Petersburg stays firmly cold, with daytime highs averaging 47°F (8°C) and nights around 33°F (1°C); rain falls on around 32 of the 90 days, plus about 8 snowy days.
Summer (June through August)
Summer in Saint Petersburg is pleasantly warm, with daytime highs averaging 70°F (21°C) and nights around 57°F (14°C); rain falls on around 41 of the 90 days. Daylight is generous - around 12.8 hours of sun a day.
Fall (September through November)
Through fall, Saint Petersburg is brisk and cold: 48°F (9°C) by day, 40°F (4°C) after dark, and rain falls on around 39 of the 90 days, plus about 5 snowy days.
Winter (December through February)
Winter brings deep cold here - highs near 29°F (-2°C), nights near 21°F (-6°C), and rain falls on around 41 of the 90 days, plus about 27 snowy days. Sun is scarce, averaging 1.7 hours a day. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
The coldest and warmest values in the dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.
Planning around winter in Saint Petersburg
The easier weather window
May to June and August to September is the sweet spot for Saint Petersburg - these are the warmest and brightest weeks of the year. Expect 64°F (18°C) in the afternoon and around 12 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in May.
Cold-weather packing
Pack for Saint Petersburg with a heavy insulated coat, hat and gloves for winter and proper waterproofs rather than an umbrella - wet days are the norm here. Even in July, lows of 59°F (15°C) make an extra layer worth the space.
Monthly highs, lows and seasonal change
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 26° | 18° | 14 | 1.9 in | 1.3 h/day | 6.7 h | 44% | 87% |
| February | 29° | 20° | 12 | 1.8 in | 2.9 h/day | 9.0 h | 43% | 86% |
| March | 36° | 24° | 10 | 1.6 in | 6.6 h/day | 11.6 h | 32% | 81% |
| April | 46° | 32° | 12 | 2.1 in | 9.4 h/day | 14.5 h | 39% | 76% |
| May | 59° | 44° | 10 | 1.8 in | 12.8 h/day | 17.1 h | 33% | 68% |
| June | 69° | 55° | 10 | 2.2 in | 14.6 h/day | 18.8 h | 35% | 68% |
| July | 71° | 59° | 16 | 3.7 in | 12.8 h/day | 18.1 h | 53% | 75% |
| August | 69° | 57° | 14 | 4.3 in | 11.1 h/day | 15.6 h | 46% | 78% |
| September | 60° | 50° | 12 | 2.5 in | 8.1 h/day | 12.7 h | 41% | 81% |
| October | 47° | 39° | 14 | 2.8 in | 4.8 h/day | 10.0 h | 45% | 85% |
| November | 37° | 31° | 13 | 2.2 in | 1.6 h/day | 7.4 h | 43% | 88% |
| December | 31° | 24° | 15 | 2.2 in | 0.9 h/day | 5.9 h | 49% | 88% |
The route from winter to summer, month by month
Each card shows the average high and low. The bar places that month between Saint Petersburg's coldest night and warmest afternoon.
January
- Rain
- 14 days
- Sunshine
- 1.3 h
- Daylight
- 6.7 h
- Snow
- 10 days
February
- Rain
- 12 days
- Sunshine
- 2.9 h
- Daylight
- 9.0 h
- Snow
- 8 days
March
- Rain
- 10 days
- Sunshine
- 6.6 h
- Daylight
- 11.6 h
- Snow
- 4 days
April
- Rain
- 12 days
- Sunshine
- 9.4 h
- Daylight
- 14.5 h
- Snow
- 3 days
May
- Rain
- 10 days
- Sunshine
- 12.8 h
- Daylight
- 17.1 h
June
- Rain
- 10 days
- Sunshine
- 14.6 h
- Daylight
- 18.8 h
July
- Rain
- 16 days
- Sunshine
- 12.8 h
- Daylight
- 18.1 h
August
- Rain
- 14 days
- Sunshine
- 11.1 h
- Daylight
- 15.6 h
September
- Rain
- 12 days
- Sunshine
- 8.1 h
- Daylight
- 12.7 h
October
- Rain
- 14 days
- Sunshine
- 4.8 h
- Daylight
- 10.0 h
November
- Rain
- 13 days
- Sunshine
- 1.6 h
- Daylight
- 7.4 h
- Snow
- 5 days
December
- Rain
- 15 days
- Sunshine
- 0.9 h
- Daylight
- 5.9 h
- Snow
- 8 days
Looking for warmer alternatives? Browse warm places by month, or compare Saint Petersburg's coolest part of the year: January, February, December.
Where Saint Petersburg sits among other climates
- Saint Petersburg averages 43°F (6°C) across the year - cooler than all but 3% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.