The best times to visit St Petersburg for ideal weather are
May 21st to September 16th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
St Petersburg Travel Guide
Weather in St Petersburg
Average temperatures in St Petersburg vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 23rd percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit St Petersburg, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 77.1°F (25.1°C) with temperatures rarely dropping below 58.5°F (14.7°C) at night.
St Petersburg Temperatures (Fahrenheit)
St Petersburg Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
St Petersburg Perceived Temperature (F)
St Petersburg Perceived Temperature (C)
Average St Petersburg Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in St Petersburg are April, March, and then May. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid April. For example, on the week of April 16th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in late August to early September with an average of 3 days of significant precipitation the week of August 27th.
When can you find snow in St Petersburg? Weather stations report very large amounts of snow likely to be deepest around March, especially close to early to mid March. The best time to ski (if at all) in St Petersburg is often around around March 12th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
The graph below shows the % chance of rainy and snowy days in St Petersburg.
Snow on the Ground
The graph below shows the average snow on the ground in St Petersburg (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
St Petersburg has some extremely humid months, with other comfortably humid months. The least humid month is May (54.9% relative humidity), and the most humid month is November (84.7%).
Wind in St Petersburg is usually calm. The windiest month is December, followed by March and November. December’s average wind speed of around 8.2 knots (9.5 MPH or 15.3 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late December where average top sustained speeds reach 14.3 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in St Petersburg.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||7.4||Gentle breeze||12.3||Significant breeze|
|Feb||6.7||Light breeze||11.5||Significant breeze|
|Mar||7.6||Gentle breeze||13.2||Significant breeze|
|Apr||7.4||Gentle breeze||13.6||Significant breeze|
|May||6.7||Light breeze||12.6||Significant breeze|
|Jun||6.4||Light breeze||12.4||Significant breeze|
|Jul||5.8||Light breeze||11.3||Significant breeze|
|Aug||6||Light breeze||11.5||Significant breeze|
|Sep||6||Light breeze||11.1||Significant breeze|
|Oct||6.9||Light breeze||12||Significant breeze|
|Nov||7.5||Gentle breeze||12.6||Significant breeze|
|Dec||8.2||Gentle breeze||13.6||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to St Petersburg?
Our best data indicates this area is somewhat safe, but with extra warnings in a few regions. As of Dec 13, 2018 there are travel warnings and regional advisories for Russia; exercise a high degree of caution and avoid some areas. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories
The Busiest and Least Crowded Months
The busiest month for tourism in St Petersburg, Russia is July, followed by June and January. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit St Petersburg in December. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall St Petersburg Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderately cold. Highs range from 67.8°F (19.9°C) and 33.3°F (0.7°C) with far warmer temperatures in the later months. Rain is somewhat common with 4 to 6 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have comfortably cool weather with high temperatures that are comfortable. These months see the most precipitation with 8 to 10 days of precipitation per month. June – August is the busiest season for tourism in St Petersburg, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 64.1°F (17.8°C) and 33.2°F (0.7°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 7 to 9 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.
Winter (December through February)
Weather is far too cold this time of year in St Petersburg to be enjoyable for warm weather travelers. The average high during this season is between 34.4°F (1.3°C) and 21.7°F (-5.7°C). On average, it rains or snows a fair amount: 6 to 8 times per month. These times of year are fairly slow with tourists.