Last updated: February 24, 2025
In May, St. Petersburg, United States, welcomes warm temperatures with a maximum reaching 30°C (87°F), while the average holds steady at 25°C (77°F), and a pleasant minimum of 18°C (64°F). This month also brings along a significant amount of precipitation, totaling 105 mm (4.1 in), occurring over approximately 10 days. With an average humidity level of 76%, the air can feel quite tropical, enhancing the city’s lush landscapes and vibrant outdoor activities. Whether you’re exploring the local sights or enjoying the coastal breeze, St. Petersburg’s May weather offers a delightful backdrop for any adventure.
In May, St. Petersburg experiences a delightful warm-up, with temperatures gradually rising as spring transitions into summer. The month kicks off with a minimum of 18°C (64°F) and an average temperature peaking at a comfortable 25°C (77°F), complemented by a maximum of 30°C (87°F). This progressive warmth not only makes May one of the most pleasant months in the area but also sets the stage for the heat that follows in June and July. Compared to the cooler months of earlier spring, where averages hovered around 19°C (66°F) in February and 20°C (68°F) in March, May distinctly marks the arrival of more summery days and vibrant outdoor activities. The gentle rise in temperatures invites locals and visitors alike to bask in the sunshine and enjoy the beautiful natural surroundings, making it an ideal time to explore the city's charms.
In May, St. Petersburg experiences a significant uptick in precipitation, with 105 mm (4.1 inches) of rain falling over approximately 10 days. This marks a noticeable increase compared to the wetter months preceding it, particularly April's 60 mm (2.4 inches), reflecting the transition into the region's lush, vibrant summer. The onset of soaking rains in May sets the stage for the even heavier deluges that follow in June and July, when monthly totals soar above 170 mm. Such trends highlight May as a critical month when the city prepares for the impending summer storms, ensuring nature is revitalized and landscapes flourish.
As spring ushers in warmer temperatures, May in St. Petersburg welcomes a slight dip in humidity, averaging 76%, a trend that continues from the previous months. This decrease from April’s 78% marks the beginning of a gradual decline that lasts into the hotter summer months. Throughout the year, humidity levels fluctuate, with the highest readings typically seen in the winter months of January and February at a consistent 82%, while the summer months—specifically July and August—experience their lowest humidity levels, hovering around 74%. This transition in May hints at the impending summer heat, offering a comfortable atmosphere perfect for outdoor activities before humidity creeps back up in the late summer and fall.
As May unfolds in St. Petersburg, residents and visitors can expect an extreme UV Index of 11, mirroring the peak levels seen in April and signaling a critical time for sun safety. With a burn time of just 10 minutes, it's crucial to stay vigilant against overexposure, especially as the trend toward higher UV levels continues into June, when the index peaks at 12. This sharp rise from the moderate levels of winter and early spring highlights the importance of sun protection during the vibrant summer days ahead. For more detailed information on the UV Index trends, visit St. Petersburg UV Index.
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As May unfolds in St. Petersburg, the sun graces the city with 335 hours of radiant sunshine, marking it as one of the sunniest months of the year. This delightful surge in sunlight follows a progressive increase from January's 216 hours, showcasing an uplifting trend as spring transitions into summer. The warmth of April, with 319 hours, nearly nudges the city to its sunniest peak, while the surrounding months like June and July maintain a robust 303 and 319 hours of daylight, respectively. This steady glow not only brightens the skies but also nourishes the local landscape, inviting residents and visitors alike to revel in the vibrant outdoors. The sun-soaked days of May set the stage for summer's arrival, accentuating St. Petersburg’s charm with longer, brighter afternoons and an ever-present sense of joy in the air.
In St. Petersburg, the likelihood of sunny weather in May is a promising 59%, marking a slight dip from the peak of 63% in April. This trend of increasing sunshine begins in the winter months, with January starting at a modest 38%, slowly climbing as spring approaches. The chances of sunny days improve noticeably as summer nears but take a significant plunge to 18% by June. Thus, May represents a transitional moment where sunny days are plentiful, yet the lingering cloud cover hints at the arrival of the hotter, more humid months ahead. Enjoying the mild, sunlit days of May is a delightful opportunity before the intense summer heat sets in.
As spring unfolds in St. Petersburg, daylight gradually stretches its reach, culminating in May, where residents bask in a welcoming 13 hours of sunlight. Following the 12 hours of daylight in April, May signals a notable increase, setting the stage for the longer days of summer. This trend continues into June and July, where daylight remains consistent at 13 hours, creating perfect conditions for outdoor activities and enjoying the vibrant local scenery. However, as summer wanes, daylight begins to recede, with September seeing a decrease back to 12 hours. The transition into autumn and winter brings shorter days, with November and December both offering only 10 hours of light. This cyclical pattern showcases the rhythmic dance of daylight throughout the year in this charming city, inviting both reflection and activity under its ever-changing skies.
As May graces St. Petersburg with its mild temperatures, the winds remain comfortably consistent, averaging 5.0 m/s (11 mph). Sharing this wind speed with the preceding month, April, May doesn't show significant variation, suggesting a steady atmospheric rhythm as spring deepens. This trend of moderate winds continues from the brisk January and February, creating an inviting backdrop for outdoor activities. As summer approaches, it’s interesting to note a gradual decline in wind speed over the upcoming months, reaching 4.1 m/s (9 mph) in June. Overall, May stands as a balanced transitional period, bridging the vibrant energy of spring with the coming warmth of summer.
The weather in St. Petersburg changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in St. Petersburg and find detailed weather information for every month.
May and January present stark contrasts in weather patterns. In May, temperatures generally range from a mild 18°C (64°F) to a warm 30°C (87°F), with an average of 25°C (77°F). The month is characterized by higher humidity at 76% and more precipitation, totaling 105 mm (4.1 in) over approximately 10 days. In contrast, January offers much cooler conditions, with temperatures ranging from a minimum of 3°C (37°F) to a pleasant maximum of 24°C (75°F), averaging 17°C (62°F). This month sees significantly less rainfall at 40 mm (1.6 in) across about 4 days and slightly higher humidity at 82%. For more detailed insights, you can check St. Petersburg weather in January.
May and February present contrasting weather patterns. In May, temperatures range from a minimum of 18°C (64°F) to a maximum of 30°C (87°F), with an average of 25°C (77°F), making it significantly warmer than February, where temperatures hover between 9°C (48°F) and 25°C (78°F), with an average of 19°C (66°F). Additionally, May experiences higher precipitation, averaging 105 mm (4.1 in) over 10 days, compared to February's 50 mm (2.0 in) across just 5 days. Humidity levels are also noteworthy, with May at 76% and February slightly higher at 82%. For more detailed insights, you can check St. Petersburg weather in February.
In comparing the weather of May and March, it's clear that May brings warmer temperatures, with averages around 25°C (77°F) compared to March's 20°C (68°F). The minimum temperatures in May are significantly higher at 18°C (64°F) versus 8°C (46°F) in March. Additionally, May experiences more precipitation—105 mm (4.1 in) over about 10 days—while March has a much drier climate with only 20 mm (0.8 in) over 3 days. Despite March being slightly more humid at 79%, the overall warmth of May makes it a distinctly different month. For more details about the conditions in March, you can check St. Petersburg weather in March.
In comparing the weather between April and May, we see a notable increase in temperature as May averages 25°C (77°F) with a maximum reaching 30°C (87°F), while April's average is slightly cooler at 23°C (73°F) and peaks at 28°C (83°F). Additionally, May experiences more precipitation, totaling 105 mm (4.1 in) over 10 days, compared to April’s 60 mm (2.4 in) over just 7 days. Despite May being warmer, it also brings higher humidity at 76%, while April holds a slightly higher humidity level at 78%. For more details, you can check St. Petersburg weather in April.
May and June in St. Petersburg offer progressively warmer temperatures, with May seeing a minimum of 18°C (64°F) and an average of 25°C (77°F), while June starts off warmer at a minimum of 23°C (74°F) and an average of 27°C (81°F). The maximum temperatures peak at 30°C (87°F) in May and reach 32°C (89°F) in June. However, June is notably wetter, receiving 174 mm (6.8 in) of precipitation over 19 days compared to May's 105 mm (4.1 in) over 10 days, resulting in a slightly higher humidity of 75% in June compared to May's 76%. For more details on the weather conditions, you can check St. Petersburg weather in June.
In May, temperatures in St. Petersburg range from a minimum of 18°C (64°F) to a maximum of 30°C (87°F), with an average temperature of 25°C (77°F). The weather is characterized by relatively high humidity at 76% and about 105 mm (4.1 in) of precipitation spread over 10 days. In contrast, July sees warmer temperatures, with a minimum of 25°C (77°F) and a maximum of 32°C (90°F), averaging 28°C (82°F). However, July is also significantly wetter, with 204 mm (8.0 in) of rain occurring over 25 days and slightly lower humidity at 74%. For more detailed information, check out St. Petersburg weather in July.
May and August present noticeably different weather patterns. In May, temperatures range from a minimum of 18°C (64°F) to a maximum of 30°C (87°F), with an average of 25°C (77°F). The month enjoys relatively lower humidity at 76%, but experiences significant precipitation, totaling 105 mm (4.1 in) over about 10 days. In contrast, August is warmer, with minimum temperatures starting at 25°C (77°F) and peaking at 32°C (90°F), averaging around 28°C (83°F). However, this month is much wetter, with precipitation levels soaring to 219 mm (8.6 in) spread over 25 days and slightly lower humidity at 74%. For more specific insights on August weather patterns, you can check out St. Petersburg weather in August.
May and September both feature warm temperatures, but September tends to be slightly warmer overall. In May, temperatures typically range from a minimum of 18°C (64°F) to a maximum of 30°C (87°F), with an average of 25°C (77°F). By contrast, September sees a minimum of 23°C (74°F), an average of 27°C (82°F), and a peak of 32°C (89°F). While May experiences about 105 mm (4.1 in) of precipitation over approximately 10 days, September is wetter, with 143 mm (5.6 in) spread over 18 days. Humidity levels are similar, with May at 76% and September slightly higher at 78%. For more details about September weather, check out St. Petersburg weather in September.
May and October in St. Petersburg present similar temperature ranges, with May having an average of 25°C (77°F) and October slightly warmer at 26°C (79°F). Both months experience maximum temperatures reaching 30°C (87°F) in May and 31°C (87°F) in October. However, May is typically wetter, receiving 105 mm (4.1 in) of precipitation compared to October's 67 mm (2.6 in), despite both months experiencing rain on about 10 days. Additionally, humidity levels are quite comparable, with May at 76% and October slightly higher at 79%. Learn more about the weather specifics in October by visiting St. Petersburg weather in October.
May and November in St. Petersburg present contrasting weather experiences. May features warmer temperatures, with a minimum of 18°C (64°F) and an average of 25°C (77°F), peaking at 30°C (87°F). It also tends to be more humid, with levels around 76% and higher precipitation at 105 mm (4.1 in) over approximately 10 days. In contrast, November provides milder temperatures, with a minimum of 12°C (54°F) and an average of 21°C (70°F), reaching a maximum of 28°C (83°F). The month is significantly drier, experiencing only 46 mm (1.8 in) of precipitation over about 6 days, and slightly higher humidity at 82%. For more detailed insights on November weather, you can visit St. Petersburg weather in November.
In May, St. Petersburg experiences warmer temperatures, with a minimum of 18°C (64°F) and an average of 25°C (77°F), peaking at 30°C (87°F). The month is characterized by high humidity at 76% and significant rainfall, averaging 105 mm (4.1 in) over about 10 days. In contrast, December brings cooler weather, with a minimum temperature of 7°C (45°F) and an average of 19°C (66°F), reaching a maximum of 25°C (77°F). This month is drier with only 66 mm (2.6 in) of precipitation over 6 days, although humidity rises to 84%. To learn more about the December climate, you can check St. Petersburg weather in December.
As May unfolds in St. Petersburg, the transition to summer becomes palpable, marked by warmer temperatures and a noticeable increase in humidity. This month typically ushers in sunnier skies and balmy evenings, contrasting vividly with the cooler, more unpredictable weather of earlier spring months. While occasional rainfall remains a possibility, the overall atmosphere is defined by a burgeoning vibrancy and life. For those eager to explore the region’s outdoor charms, May represents a delightful opportunity, blending the best of both pleasant warmth and the lush scenery that accompanies the rain. To learn more about what you can expect throughout the year, check out St. Petersburg Climate.