Last updated: August 27, 2025
Saint Petersburg experiences a vibrant August, where the maximum temperature can reach a sweltering 30°C (86°F), providing warm days for both locals and tourists. The average temperature hovers around a comfortable 17°C (62°F), while the minimum can drop to a refreshing 8°C (47°F) at night. However, it's essential to prepare for the possibility of rain, as the city sees approximately 115 mm (4.5 in) of precipitation over 15 days, contributing to an average humidity level of 86%. August in this cultural hub offers delightful summer warmth amidst occasional summer showers, making it a unique time to explore the city's rich history and picturesque landscapes.
August in Saint Petersburg offers a delightful reprieve from the frigid winters, showcasing a range of temperatures that beckon summer enthusiasts. With minimums around 8°C (47°F) and averages hovering at 17°C (62°F), the city experiences mild and pleasant conditions. The maximum temperatures can reach up to 30°C (86°F), creating the perfect environment for outdoor activities and cultural festivals. This month bridges the warmest summer days of July and the cooling transition into autumn, highlighting a trend of declining temperatures as the year progresses. As summer winds down, August's warmth invites locals and visitors alike to savor the sunlit beauty of this historic city before the autumn chill sets in.
In August, Saint Petersburg experiences a notable spike in precipitation, with 115 mm (4.5 in) of rain falling over 15 days. This increase marks a significant rise compared to the preceding months, particularly July, which sees 82 mm (3.2 in) over 13 days. As summer in the city begins to wane, this uptick in rainfall serves as a reminder of the impending autumn. The shift from the drier months of late spring and early summer, where precipitation hovered around 48 mm, highlights August as a transitional phase in the city's weather patterns. The increase not only contributes to the lush greenery that characterizes the area but also prepares the landscape for the wetter months ahead.
August in Saint Petersburg marks a transition in humidity levels as the summer draws to a close. With an average humidity of 86%, it stands slightly higher than the preceding month of July, which recorded 83%. This increase reflects the overall trend of the city experiencing its highest humidity during the winter months, peaking in January at a notable 97%. However, as we move from the warmth of summer into the cooler seasons, there is a gradual rise as conditions become more humid again by September, reaching 90%. While August remains relatively humid, it balances summer's warmth with the impending coolness of autumn, creating a uniquely damp atmosphere typical of this beautiful city.
In August, Saint Petersburg experiences a moderate UV Index of 5, indicating a balanced exposure level similar to the preceding months of May and July. As summer begins to wane, residents and visitors can enjoy outdoor activities with a burn time of about 30 minutes, highlighting the importance of sun protection while still allowing for ample sunshine enjoyment. Interestingly, the city witnesses its peak UV levels during the earlier summer months, with a high index of 7 in both June and July, before transitioning back to moderate levels in September. This trend showcases the shifting patterns of sun intensity throughout the warmer months, making it essential to stay informed on UV conditions. For more information, you can explore the detailed Saint Petersburg UV Index.
UV Risk Categories
In August, Saint Petersburg basks in a generous embrace of sunlight, with approximately 385 hours gracing the city. This marks a notable decline from the sun-drenched summer months of June and July, which recorded 469 and 458 hours respectively. However, August remains bright, allowing locals and tourists alike to enjoy lingering warm evenings as they transition into the cooler autumn months. The trend throughout the year demonstrates a steady increase in sunlight from the harsh, dim winter of January, escalating to summer’s peak, before gradually tapering off into the softer light of fall. As the months progress, August stands as a golden bridge between vibrant summer days and the forthcoming calm of autumn, offering a final splash of sunshine before the darker days set in.
In Saint Petersburg, the likelihood of sunny weather sees a noticeable ebb and flow throughout the year. August, with a 27% chance of sun, marks a significant dip after the peak summer months of June and July, where the chances soar to 56% and 57%, respectively. This mid-summer high provides a brief respite from the typically overcast skies that dominate the early months of the year, evidenced by a mere 5% chance in both January and December. As the city transitions into September, the sun’s presence further diminishes, hampered by the advent of autumn. Thus, while August offers a fair shot at sunny days, it’s clear that summer’s brightness begins to fade, paving the way for cooler, cloudier days ahead.
In August, daylight in Saint Petersburg begins to gracefully wane, providing approximately 15 hours of sunlight. This marks a noticeable shift from the peak 18 hours experienced in June, as summer gives way to the anticipation of autumn. The month continues to enjoy longer days compared to the early part of the year, with March seeing only 11 hours of daylight. As the city transitions from the vibrant, sunlit days of summer, August still retains a generous amount of light, allowing residents and visitors alike to relish the lingering warmth before the days shorten further in September, where only 12 hours of daylight will remain. This gradual descent into shorter days underscores the rhythmic beauty of the seasons in this northern city, captivating those who experience its twilight hours.
In August, Saint Petersburg experiences a notable shift in its wind patterns, with an average speed of 4.6 m/s (10 mph), marking a welcome uplift compared to the calmer breezes of the preceding summer months. This increase in wind velocity represents a transitional phase, positioning August as a bridge between the gentle winds of summer and the gustier conditions of autumn, which other months like October and November further amplify, reaching 5.3 m/s (12 mph) and 5.4 m/s (12 mph), respectively. As the warmth of summer fades, the invigorating August winds herald the change of seasons, inviting both locals and visitors to embrace the fresh air and the vibrant energy of the city.
Weather in Saint Petersburg varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Saint Petersburg, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present contrasting weather conditions. In August, temperatures range from a minimum of 8°C (47°F) to a maximum of 30°C (86°F), with an average of 17°C (62°F). The month experiences significant precipitation of 115 mm (4.5 in) over 15 days, coupled with high humidity at 86%. In stark contrast, January features much colder temperatures, with a minimum of -22°C (-7°F) and a maximum of 7°C (44°F), averaging around -4°C (25°F). Precipitation is lower, at 40 mm (1.6 in) over 11 days, but the humidity is notably high at 97%. To learn more about January weather specifics, check out Saint Petersburg weather in January.
In comparison, August and February present starkly contrasting weather conditions. August typically enjoys milder temperatures, with averages around 17°C (62°F) and highs reaching 30°C (86°F), while February experiences extreme cold, with average temperatures sinking to -4°C (24°F) and lows plummeting to -28°C (-17°F). Additionally, August has a significantly higher precipitation level of 115 mm (4.5 in) over approximately 15 days, compared to February's lighter 51 mm (2.0 in) across 14 days. Humidity also varies, with August being relatively humid at 86%, while February's humidity is slightly higher at 94%. For a detailed overview of February weather in Saint Petersburg, you can explore Saint Petersburg weather in February.
When comparing the weather in August and March, the differences are striking. August offers a mild climate with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 30°C (86°F), making it one of the warmest months of the year. In contrast, March experiences much colder conditions, with temperatures dropping as low as -23°C (-9°F) and peaking at 11°C (53°F). While August is characterized by higher humidity at 86% and significant precipitation totaling 115 mm (4.5 in) over 15 days, March has relatively lower precipitation levels of 52 mm (2.0 in) across 12 days, accompanied by even higher humidity at 91%. For a closer look at March weather in Saint Petersburg, you can check Saint Petersburg weather in March.
When comparing the weather in August and April, significant differences emerge. August boasts a much warmer temperature range, with minimums of 8°C (47°F) and maximums reaching 30°C (86°F), averaging around 17°C (62°F). In contrast, April presents cooler conditions, ranging from a chilly minimum of -13°C (10°F) to a comfortable high of 19°C (67°F), with an average of just 4°C (39°F). Precipitation is also more common in August, with 115 mm (4.5 in) over 15 days, compared to April’s 51 mm (2.0 in) over 11 days. Despite the slight difference in humidity, with August at 86% and April at 87%, both months have a moist atmosphere. For a more detailed look at April's weather, visit Saint Petersburg weather in April.
When comparing the weather in August and May, notable differences emerge. August typically boasts a more temperate climate with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 30°C (86°F), while May's temperatures are cooler, starting at -2°C (29°F) and reaching up to 27°C (80°F). Humidity is significantly higher in August at 86%, compared to May's 74%, contributing to a more muggy feel during the summer month. Additionally, while August experiences more frequent precipitation over approximately 15 days with a total of 115 mm (4.5 in), May is relatively drier with only 48 mm (1.9 in) over 9 days. For a closer look at May weather specifics, you can visit Saint Petersburg weather in May.
When comparing the weather in August to that in June, several notable differences emerge. August generally features a wider temperature range, with minimums around 8°C (47°F) and maximums reaching up to 30°C (86°F), while June offers slightly cooler conditions, with minimums of 4°C (39°F) and maximums peaking at 33°C (92°F). Precipitation levels are significantly higher in August, totaling 115 mm (4.5 in) over 15 rainy days, compared to June's 48 mm (1.9 in) over just 9 days. Furthermore, humidity in August rises to a notable 86%, while in June, it remains lower at 77%. For more detailed insights, you can check out Saint Petersburg weather in June.
In comparing the weather between July and August, both months experience similar minimum temperatures, hovering around 8°C. However, July tends to be slightly warmer on average and during the maximum, with averages of 18°C and peaks of 32°C, compared to August's average of 17°C and maximum of 30°C. Precipitation is also more prevalent in August, with a total of 115 mm over 15 days, as opposed to July's 82 mm over 13 days, contributing to a slightly higher humidity level of 86% in August compared to July’s 83%. For more detailed information on July weather, you can visit Saint Petersburg weather in July.
August typically boasts warmer temperatures, with a minimum of 8°C (47°F), an average of 17°C (62°F), and a maximum of 30°C (86°F). This month also experiences significant precipitation, averaging 115 mm (4.5 in) over about 15 days, alongside a high humidity level of 86%. In contrast, September sees a notable drop in temperature, with minimums around 1°C (34°F) and an average of 12°C (54°F), peaking at 24°C (76°F). The precipitation decreases to 76 mm (3.0 in) over 14 days, while humidity slightly rises to 90%. For more detailed information, you can check Saint Petersburg weather in September.
August and October present quite contrasting weather conditions. In August, temperatures range from a pleasant 8°C (47°F) at night to a warm 30°C (86°F) during the day, with an average of 17°C (62°F). The month sees substantial rainfall, totaling 115 mm (4.5 in) over 15 days, and a high humidity level of 86%. In stark contrast, October brings a significant drop in temperatures, with night readings plummeting to -4°C (25°F) and a daytime maximum of only 17°C (63°F), averaging 7°C (44°F). Although it is slightly less rainy than August, October still experiences 86 mm (3.4 in) of precipitation across 16 days, accompanied by even higher humidity at 93%. For a deeper look into October's climate, visit Saint Petersburg weather in October.
August and November present contrasting weather experiences in Saint Petersburg. In August, temperatures range from a minimum of 8°C (47°F) to a maximum of 30°C (86°F), with an average of around 17°C (62°F). The month sees significant precipitation, totaling 115 mm (4.5 in) across about 15 days, accompanied by relatively high humidity at 86%. In stark contrast, November ushers in colder conditions, with temperatures dipping as low as -8°C (18°F), averaging just 2°C (36°F), and peaking at 10°C (51°F). Though November has less precipitation, with 55 mm (2.2 in) over 13 days, the humidity remains high at 92%. For more insights on November’s weather in Saint Petersburg, check out Saint Petersburg weather in November.
August weather in Saint Petersburg can be characterized by mild temperatures, ranging from a minimum of 8°C (47°F) to a maximum of 30°C (86°F), with an average of 17°C (62°F). The humidity is relatively high at 86%, and the city experiences about 115 mm (4.5 in) of precipitation over approximately 15 days. In contrast, December sees a dramatic drop in temperatures, with lows plunging to -21°C (-6°F) and highs reaching only 6°C (42°F), averaging around -2°C (28°F). The winter month brings 69 mm (2.7 in) of precipitation spread across 17 days, accompanied by even higher humidity levels at 94%. For more details on the winter conditions, you can refer to Saint Petersburg weather in December.
As summer reaches its zenith in August, Saint Petersburg experiences a unique blend of warmth and humidity, making it notably different from other months. With maximum temperatures soaring to a pleasant 30°C, the city buzzes with outdoor activities, yet the average temperature hovers around a comfortable 17°C. Residents and visitors alike can expect a fair amount of rain, with about 15 days of precipitation, contributing to a lush landscape. The high humidity level of 86% adds a touch of tropical flair to the otherwise temperate climate. This month stands out as a vibrant time, offering a mix of sunny days and occasional showers, shaping a distinctive experience in the cultural heart of Russia. For more insights, check out the detailed Saint Petersburg Climate.