St. Petersburg in August
In August, St. Petersburg averages 21°C (69°F) during the day and 13°C (56°F) at night, with frequent rain — about 21 days of the month see precipitation (96 mm total).
High seasonConditions are comfortable for sightseeing without being sweltering. Expect daily rain or showers, often in heavy bursts.
August offers comfortable temperatures in St. Petersburg, with some rain to plan around.
How August compares to the rest of the year in St. Petersburg
August is one of the warmest months in St. Petersburg (2nd of 12) and one of the wettest months (3rd of 12). Daytime temperature runs 12°C above the annual average (9°C). August runs 1°C cooler than July (22°C) and cools 5°C in September (15°C).
August sunrise & sunset in St. Petersburg
Times shown for St. Petersburg local time (Europe/Moscow), calculated for the 15th of August. They shift by a few minutes day to day across the month.
Photography light in St. Petersburg — August
Golden-hour and blue-hour windows for the 15th of August, in St. Petersburg's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — St. Petersburg in August
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on August's tier (High season) and St. Petersburg's popularity.
Crowds & pricing — August in St. Petersburg
This is a busy month in St. Petersburg — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: comfortable tourism weather Northern Hemisphere summer holidays
Sun & mosquito risk — August in St. Petersburg
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
St. Petersburg in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | -3°C / 26°F | -7°C / 19°F | 46 mm | 21 | — |
| February | -1°C / 29°F | -6°C / 21°F | 43 mm | 18 | — |
| March | 3°C / 37°F | -4°C / 24°F | 40 mm | 18 | — |
| April | 9°C / 48°F | 0°C / 32°F | 49 mm | 16 | — |
| May | 16°C / 60°F | 6°C / 44°F | 57 mm | 17 | — |
| June | 20°C / 69°F | 12°C / 54°F | 60 mm | 19 | — |
| July | 22°C / 71°F | 14°C / 58°F | 89 mm | 22 | — |
| August | 21°C / 69°F | 13°C / 56°F | 96 mm | 21 | — |
| September | 15°C / 60°F | 9°C / 48°F | 59 mm | 20 | — |
| October | 8°C / 46°F | 3°C / 38°F | 66 mm | 21 | — |
| November | 2°C / 36°F | -1°C / 30°F | 53 mm | 20 | — |
| December | -1°C / 31°F | -4°C / 24°F | 51 mm | 20 | — |
Other cities with similar August weather
🌍 See the full ranked list of climate twins for St. Petersburg in August →
Frequently asked questions
How hot is St. Petersburg in August?
In August, St. Petersburg averages a high of 21°C (69°F) and a low of 13°C (56°F) — generally mild and pleasant.
Does it rain a lot in St. Petersburg in August?
August is quite rainy in St. Petersburg, with about 21 rainy days on average.
Is August a good time to visit St. Petersburg?
August is mild and pleasant but on the rainy side. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for St. Petersburg in August?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full August packing list for St. Petersburg for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.