St Petersburg

Planning your time in St. Petersburg? Here you will find the most up-to-date weather information, including forecasts and helpful charts, to ensure your stay is as comfortable as possible.

St. Petersburg in the USA boasts a warm and humid subtropical climate that attracts tourists all year round. The city is characterized by hot and humid summers, as well as mild and relatively dry winters. Thanks to this climate, it rarely gets truly cold here, making it an excellent destination for those seeking sun and warmth.

In St. Petersburg, there are two main seasons throughout the year. The summer months, from approximately June to September, bring the highest temperatures, averaging around 27-28°C, and are the period with the most rainfall and rainy days. Winter, from December to February, is significantly milder, with average temperatures around 16-19°C, and is characterized by less precipitation. Spring and autumn serve as pleasant transition periods with comfortable temperatures and moderate rainfall.

One of the notable features of the weather in St. Petersburg is the pronounced summer rainy season. Although precipitation is distributed throughout the year, the highest number of rainy days occurs during the summer months (especially in July and August). The rest of the year is generally drier and sunnier, creating perfect conditions for outdoor activities.

The temperature regime in St. Petersburg is characterized by noticeable seasonality, though without sharp swings or extreme cold. The coolest month of the year is January, with an average temperature of 16.3°C. During this period, average daily lows are around 13.4°C, while highs reach a comfortable 19.2°C. In contrast, the peak heat occurs in August: the average temperature this month reaches 28.2°C, with daytime figures rising to 30.3°C and nights remaining very warm at around 26.2°C. Overall, the annual temperature trend shows a smooth transition from a mild winter to a hot and humid summer.

Summer months in St. Petersburg, spanning from June to September, are marked by consistently high temperatures. Average daytime values during this time range from 29.5°C (June, September) to 30.3°C (August), and night temperatures rarely drop below 25-26°C. This creates a feeling of constant tropical warmth. Given the significant number of rainy days, especially in July and August (27 days each), summer here feels hot and humid, typical of a subtropical climate.

The winter period, from December to February, in St. Petersburg is notable for its mildness. Average temperatures in these months range from 16.3°C in January to 18.9°C in February. Even in the coldest month, January, average daytime highs are 19.2°C and night lows are 13.4°C, which rules out the possibility of severe frost. Daily temperature fluctuations remain moderate throughout the year, averaging 4-6°C between daytime highs and nighttime lows. This ensures a relatively steady temperature background throughout the day in both summer and winter seasons.

St. Petersburg experiences distinct seasonality in precipitation throughout the year. The city has a clear wet season in the summer and significantly drier conditions during the rest of the year. Snow is extremely unlikely given the year-round positive temperatures, so all precipitation falls as rain.

The wetest period falls during the summer months – from June to September. Rainfall peaks in July and August, with an average of 7 mm of precipitation and up to 27 rainy days each month. June and September are also quite rainy, with 6 mm of precipitation and 22 and 21 rainy days, respectively. Given the high summer temperatures, rain during this time tends to take the form of intense but often brief downpours.

The driest month of the year in terms of precipitation is March, with only 1 mm of rain and about 6 rainy days. February also stands out for its low precipitation (2 mm) and the fewest rainy days – only 5. Overall, the period from October to May is characterized by significantly less rainfall compared to the summer, with rainy days ranging from 5 to 10 per month and total precipitation between 1 and 3 mm.

When packing for St. Petersburg, it's important to consider its warm and humid subtropical climate. In summer, especially from June to September, when average temperatures reach 27-28°C and rainfall peaks (up to 27 rainy days in July and August), you'll need light, breathable clothing made from natural fabrics like cotton or linen. Don't forget shorts, T-shirts, and sundresses, along with reliable sun protection: high SPF sunscreen, a hat, and sunglasses. A key accessory during the summer months is an umbrella or a light raincoat, as showers can be frequent, though often short-lived. Comfortable, and perhaps waterproof, shoes will also come in handy for city walks.

Winter in St. Petersburg, from December to February, is much milder and drier, with average temperatures around 16-19°C. During this time of year, layering is key: light sweaters, cardigans, long-sleeved T-shirts, and a light jacket or windbreaker. Jeans or comfortable trousers are good choices. While extreme cold is unlikely, evenings can be chilly, so bringing a few warm items won't hurt. Spring (March-May) and autumn (October-November) are very comfortable but variable, so the principle of layering is also relevant here. A light jacket and an umbrella might be needed, especially in May or during the transition from the summer rainy season in October.

Regardless of the season, exploring St. Petersburg requires comfortable walking shoes, as there are many interesting places in the city best seen on foot. Also, since the sun is active here year-round, don't neglect sunscreen even in the cooler months. A power adapter (if you're traveling from a country with different plug standards) and a portable power bank for your phone are always useful travel items.