Last updated: August 21, 2025
May in Tallinn, Estonia brings a refreshing transition from the chill of winter to the warmth of summer. With a maximum temperature reaching a pleasant 24°C (75°F), the city's landscapes bloom vibrantly, inviting exploration. The average temperature settles at a mild 10°C (50°F), while occasional drops can occur, with minimums plunging to -2°C (29°F). May is characterized by 54 mm (2.1 in) of precipitation over 9 days, contributing to the lush greenery of the season. Humidity levels hover around 76%, creating a crisp yet invigorating atmosphere for both locals and visitors. Enjoy May's delicate balance of warmth and freshness in this charming Baltic capital!
As May unfolds in Tallinn, Estonia, the city sheds its winter coat, welcoming a noticeable shift in temperatures. The month starts with chilly nights, dipping to a brisk -2°C (29°F), but quickly warms up during the day, with averages reaching a pleasant 10°C (50°F). By the end of the month, highs can soar to a delightful 24°C (75°F), making it the perfect time for outdoor activities and soaking in the vibrant spring atmosphere. This transition marks a significant leap from the previously frigid months, with April serving as a bridge into this warmer phase of the year. Overall, May showcases a beautiful evolution in Tallinn's climate, inviting locals and visitors alike to revel in the season's liveliness.
May in Tallinn, Estonia, ushers in a noticeable shift in weather as precipitation rises to 54 mm (2.1 in), making it one of the wetter months of the spring season. This increase comes with 9 days of rain, slightly less than the preceding month of April but indicative of the transition towards summer. The rainfall begins to swell compared to the earlier months, with May’s figures representing a consistent upward trend. As the city blossoms into late spring, this surge in precipitation plays a crucial role in nurturing the lush greenery that defines the vibrant surroundings of Tallinn, setting the stage for warmer months ahead.
As spring transitions into summer, May in Tallinn, Estonia offers a notable shift in humidity levels, dipping to a comfortable 76%. This decrease marks a refreshing change from the higher humidity of the winter months—where levels hover around a consistent 90%—and the early spring, which sees humidity at 87% in April. With June following closely behind at 80%, May provides an ideal window to enjoy the blossoming landscapes and outdoor activities without the heaviness of higher humidity. Overall, this month reflects a gradual move towards a more moderate and pleasant atmosphere, setting the stage for the warm summer ahead.
As spring transitions into early summer, May in Tallinn marks a noticeable shift in the UV Index, climbing to 5, which falls into the moderate exposure category. This increase suggests that while the sun's rays become more powerful, the risk of harm remains manageable for most people. With a burn time of just 30 minutes, it's essential to be more vigilant about sun protection during your outdoor activities. This trend of rising UV levels will continue into June and July, peaking at 7. By staying informed and taking necessary precautions, residents and visitors can enjoy the warmth of May rays while keeping their skin safe. For more details, check the Tallinn UV Index.
UV Risk Categories
May brings a delightful surge of sunshine to Tallinn, Estonia, with an impressive 452 hours of sunlight gracing the city. This marks a clear upward trend from the preceding months, showcasing the transition from the long, gray winter to more luminous spring days. As sunlight hours steadily increase from 61 in January to 367 in April, May shines as a peak moment before summer, eclipsed only by June's 488 hours. The pleasant warmth and longer days in May invite residents and visitors alike to bask in the glow, enjoy outdoor milestones, and embrace the vibrant atmosphere that accompanies the onset of the season. With such a remarkable leap in sunlight, May becomes a cherished time in Tallinn, setting the stage for the sun-drenched days of summer ahead.
As spring transitions into summer, May in Tallinn, Estonia, presents a 33% chance of sunny weather. While this figure marks a slight dip from the sunniest months of June and July, it still signals a significant increase compared to the more wintry early months of the year. April, often a precursor to summer, boasts a promising 43% chance of sunshine, setting an optimistic tone for May. Despite the potential for overcast days, those looking to enjoy some sunshine during this enchanting month can remain hopeful as the weather improves, echoing a broader trend of increasing brightness as the calendar moves towards summer.
As spring blossoms into summer, Tallinn, Estonia, experiences a remarkable surge in daylight that fosters an invigorating atmosphere. Starting in January with only 6 hours of daylight, the city gradually awakens, gaining 3 hours by February. March sees a leap to 11 hours, signaling the arrival of longer, brighter days. By April, daylight extends to 14 hours, and as May rolls in, it bursts forth with 17 hours of sunlight, reaching the peak of the season. This upward trend continues into June, where the longest days bring 18 hours of daylight, offering ample opportunities for exploration and outdoor activities. As the summer wanes into August, daylight gradually recedes to 15 hours, before settling back into a more moderate rhythm in the fall. Overall, Tallinn's daylight duration reflects a stunning dance of light, celebrating the warmth and vibrancy of the changing seasons.
In May, Tallinn experiences a gentle breeze, with an average wind speed of 4.2 m/s (9 mph), slightly lower than the preceding months. As spring unfolds, the wind calms after the brisk gusts typical of March and April, where speeds reached 5.5 m/s (12 mph) and 4.9 m/s (11 mph) respectively. This mild air reflects the transition toward summer, capturing the essence of the season's warmth. Notably, May stands out as the onset of softer winds, paving the way for the typically calmer months of June and July, where average speeds dip further to 3.3 m/s (7 mph) and 3.9 m/s (9 mph). This trend of decreasing wind speeds through late spring into summer creates an inviting atmosphere in Tallinn, perfect for outdoor exploration and enjoying the city’s picturesque landscapes.
Weather in Tallinn varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Tallinn, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present starkly contrasting weather conditions. In May, temperatures range from a chilly -2°C (29°F) at night to a pleasant 24°C (75°F) during the day, with an average of 10°C (50°F). The month sees about 54 mm (2.1 in) of precipitation across 9 days, coupled with a moderate humidity of 76%. In contrast, January is much colder, with temperatures dipping as low as -16°C (3°F) and averaging around -1°C (30°F), peaking at only 8°C (46°F). Precipitation in January is slightly lower at 44 mm (1.7 in) but occurs over 11 days, and humidity is significantly higher at 92%. For more detailed insights, check out Tallinn weather in January.
May and February present starkly contrasting weather patterns. In February, temperatures are notably colder with min temperatures plummeting to -21°C (-6°F) and an average of -2°C (28°F), while May sees a much milder climate, boasting an average temperature of 10°C (50°F) and max highs reaching 24°C (75°F). Precipitation levels are relatively similar, with May receiving 54 mm (2.1 in) over 9 rainy days, compared to February's 48 mm (1.9 in) across 11 days. Additionally, February's humidity is higher at 91%, compared to May's 76%. For a deeper exploration of the February climate, visit Tallinn weather in February.
In comparing the weather of March and May, March tends to be much colder, with temperatures ranging from a minimum of -18°C (0°F) to a maximum of just 10°C (51°F), while May enjoys milder conditions, with lows of -2°C (29°F) and highs reaching up to 24°C (75°F). Precipitation is slightly heavier in March, totaling 47 mm (1.9 in) over 13 days, compared to May's 54 mm (2.1 in) spread over 9 days, indicating that May, despite having more total precipitation, experiences shorter, less frequent rainy periods. Additionally, humidity levels are higher in March at 90%, compared to May's 76%, creating a contrast in how the seasons feel overall. For more detailed insights on March weather, you can visit Tallinn weather in March.
In comparing the weather between April and May, May generally offers milder temperatures, with a minimum of -2°C (29°F) and an average of 10°C (50°F), compared to April's minimum of -8°C (18°F) and average of 4°C (40°F). The maximum temperatures in May also rise significantly to 24°C (75°F), whereas in April, they peak at 18°C (65°F). Precipitation in May is slightly higher at 54 mm (2.1 in), falling over 9 days, while April sees a total of 41 mm (1.6 in) across 10 days. Additionally, May's humidity is lower at 76%, compared to April's higher 87%. For more details, you can check Tallinn weather in April.
In May, the weather experiences a gradual warming trend, with temperatures ranging from a chilly minimum of -2°C (29°F) to a comfortable maximum of 24°C (75°F), and an average of 10°C (50°F). The month sees around 54 mm (2.1 in) of precipitation over 9 days, with humidity levels resting at 76%.
By contrast, June brings a notable increase in warmth, featuring temperatures that span from a milder 5°C (41°F) to a warmer peak of 30°C (87°F), and an average temperature of 16°C (60°F). The precipitation increases slightly to 55 mm (2.2 in), also spread across 9 days, while humidity rises to 80%. For those interested in a detailed look at the weather in June, check out Tallinn weather in June.
In comparing the weather in May and July, we can see a noticeable shift in temperatures and precipitation patterns. May starts off chilly, with minimum temperatures dipping as low as -2°C (29°F) and an average of 10°C (50°F), while July brings much warmer conditions, with minimums around 9°C (48°F) and an average of 18°C (65°F). The maximum temperatures in May reach up to 24°C (75°F), whereas July can get as hot as 30°C (86°F). Additionally, while May sees 54 mm (2.1 in) of precipitation over 9 days, July has slightly higher rainfall at 68 mm (2.7 in) over 11 days, coupled with a modest increase in humidity, from 76% in May to 80% in July. For a detailed look at July's conditions, you can explore Tallinn weather in July.
In comparing the weather between May and August, May presents cooler temperatures, with a minimum of -2°C (29°F) and an average of 10°C (50°F), peaking at 24°C (75°F). It experiences less precipitation, totaling 54 mm (2.1 in) over about 9 days, and has a humidity level of 76%. In contrast, August sees warmer conditions, with a minimum of 8°C (47°F) and an average of 17°C (63°F), reaching up to 29°C (84°F). However, it is wetter, with precipitation at 102 mm (4.0 in) occurring over roughly 15 days and slightly higher humidity at 83%. For more detailed information on weather patterns, you can check Tallinn weather in August.
In May, temperatures begin to rise with a minimum of -2°C (29°F) and an average of 10°C (50°F), peaking at 24°C (75°F). The month sees an average of 54 mm (2.1 in) of precipitation over about 9 days, with humidity levels around 76%. In contrast, September experiences slightly milder temperatures, with a minimum of 3°C (37°F) and an average of 13°C (55°F), while still reaching up to 24°C (75°F). However, September is wetter, receiving 78 mm (3.1 in) of precipitation spread across 15 days, accompanied by higher humidity at 87%. For a more detailed outlook, check Tallinn weather in September.
May and October present contrasting weather patterns, despite sharing similar minimum temperatures of -2°C (29°F). In May, the average temperature peaks at a pleasant 10°C (50°F), with a maximum of 24°C (75°F), while October's average temperature drops to 8°C (47°F) and a maximum of 17°C (64°F). Precipitation also varies significantly; May experiences 54 mm (2.1 in) over about 9 days, whereas October sees increased rainfall, totaling 100 mm (3.9 in) across 17 days. Additionally, October has higher humidity levels, reaching 90%, compared to May's 76%. For a closer look at October weather, check out Tallinn weather in October.
May and November present contrasting weather patterns. In May, temperatures typically range from a minimum of -2°C (29°F) to a maximum of 24°C (75°F), with an average of 10°C (50°F). This month experiences about 54 mm (2.1 in) of precipitation over approximately 9 days, accompanied by a humidity level of 76%. In contrast, November sees a drop in temperatures, with a minimum of -5°C (24°F) and a maximum of only 13°C (55°F), resulting in a chillier average of 4°C (40°F). Precipitation slightly increases to 58 mm (2.3 in) over approximately 13 days, while humidity rises to 91%. For a closer look at weather specifics, you can visit Tallinn weather in November.
May and December exhibit stark contrasts in weather conditions. In May, temperatures range from a brisk -2°C (29°F) at night to a pleasant high of 24°C (75°F) during the day. This month sees an average temperature of 10°C (50°F) with 54 mm (2.1 in) of precipitation spread over 9 days, while the humidity is relatively moderate at 76%. Conversely, December brings much colder temperatures, with nighttime lows plunging to -17°C (1°F) and daytime highs only reaching 7°C (46°F). The average temperature during this month is around 0°C (32°F), accompanied by increased precipitation of 60 mm (2.4 in) over 16 days and a higher humidity level of 90%. For more details on December weather, visit Tallinn weather in December.
In May, Tallinn begins to shake off the remnants of winter, offering a refreshing contrast to the colder months. With temperatures rising, you can expect warmer days that average a pleasant 10°C, while the occasional peaks reaching up to 24°C signal the arrival of spring. However, be prepared for some variability, as nighttime temperatures can dip to chilly -2°C. Rainfall is also a factor, with approximately 54 mm of precipitation spread over 9 days, creating a lush backdrop for the blooming flora. Overall, May's weather is a noticeable shift towards more vibrant and pleasant conditions, making it an ideal time to explore the city's charm. For more detailed information on what to expect throughout the year, check out Tallinn Climate.