May Weather in Tartu, Estonia

Last updated: August 21, 2025

In Tartu, Estonia, May brings a delightful mix of late spring warmth and refreshing rainfall. With temperatures soaring to a maximum of 27°C (81°F) and an average of 11°C (52°F), the month offers a pleasant atmosphere for outdoor activities. However, a dip to a minimum of -3°C (26°F) reminds residents that cool nights are still possible. Rainfall is notable, accumulating 56 mm (2.2 inches) over 11 days, contributing to a humidity level of 73% that enhances the lush landscape. May in Tartu is a charming time for nature lovers and those seeking to enjoy the beauty of the season.

May Temperature in Tartu

In Tartu, Estonia, May marks a significant shift in temperature as spring breathes life into the region. With minimums hovering around -3°C (26°F) and average temperatures reaching a comfortable 11°C (52°F), the weather becomes increasingly inviting compared to the lingering chill of earlier months. The maximum temperature can soar to 27°C (81°F), making it one of the warmest months in the year. This transition from the harsh cold of winter, reflected in January's lows of -20°C (-4°F), showcases a notable warming trend that encourages outdoor activities and the blossoming of local flora. May serves as a refreshing prelude to summer, inviting both residents and visitors to soak in the vibrant atmosphere of Tartu.

May Weather in Tartu: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Tartu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tartu, May typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec282732415263646255453829
Data source: Temperature data for Tartu generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Tartu

In May, Tartu, Estonia experiences a notable increase in precipitation, registering 56 mm (2.2 in) across 11 days. This upward trend follows the gradual rise in rainfall from April, which saw 49 mm (1.9 in), and foreshadows the precipitation peak in the summer months of June and July. May's rain contributes to the lush greenery of the region, as the annual cycle transitions into a vibrant, blossoming season. Interestingly, while May maintains a consistent number of rainfall days, the overall precipitation marks a significant shift toward the wetter summer months, highlighting the dynamic climate rhythm of Tartu.

May Precipitation Trends in Tartu

The chart displays monthly precipitation patterns in Tartu, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Tartu, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec384245495665657962725454
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Tartu

In Tartu, Estonia, May marks a significant drop in humidity, averaging around 73%, making it one of the more pleasant months of the year. This decrease follows a gradual decline from January’s peak of 95% and continues a trend that began in April at 87%. As spring progresses, residents enjoy a refreshing shift from the heavy, humid winter months, with June seeing a slight uptick to 77%. Overall, May stands out as a time of comfort, providing a welcome respite from the high humidity levels characteristic of the earlier months, paving the way for the more humid summer ahead.

May Average Humidity in Tartu

This chart illustrates the average monthly humidity levels in Tartu, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Tartu is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%93%90%87%73%77%80%84%89%93%93%93%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Tartu

As spring blossoms into summer, May in Tartu, Estonia sees a noticeable rise in the UV Index, reaching 5 and retaining a moderate exposure category. This indicates that while outdoor activities can be enjoyed, a little extra caution is advised, as the burn time shortens to 30 minutes for fair-skinned individuals. Following the gradual increase from January's low UV levels, May marks a turning point, foreshadowing the high indices of June and July. Awareness of UV exposure is essential, and you can stay informed with the latest forecasts by visiting Tartu UV Index. Enjoy the vibrant spring days, but remember to protect your skin!

Maximum UV Index Levels in Tartu for May

The chart shows the monthly maximum UV Index (UVI) for Tartu in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Tartu typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457764211
Data source: Tartu May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Tartu

As spring unfolds in Tartu, Estonia, May emerges as a beacon of sunlight, boasting a remarkable 429 hours of sunshine. This marks a delightful leap from the preceding months, with March and April capturing only 261 and 337 hours, respectively. The gradual increase in daylight is a perfect prelude to the summer months, where June continues the upward trend, showcasing 463 hours of golden rays. However, as the year progresses toward autumn, the sunshine begins to wane, with September seeing a drop to 295 hours and October further reducing to 205 hours. This pattern of fluctuating daylight not only brightens the spirits of Tartu’s residents but also underscores the enchanting transition from the briskness of winter to the warmth of summer.

Monthly Sunshine Duration in Tartu: May Highlighted

The May sunshine duration represents the total number of hours Tartu experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec57h125h261h337h429h463h457h388h295h205h106h57h
Data source: Tartu May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Tartu During May

In Tartu, Estonia, the transition from spring to summer brings a noticeable shift in sunny weather, particularly in May. Although May's 32% chance of sunshine mirrors March's percentages, it marks a significant upward trend from the gray skies of winter, where January sees a mere 5%. This slight dip from April's 39% suggests that while sunny days are still frequent, they begin to wane as the month progresses. However, the brighter months of June and July, both boasting a 56% probability of sun, are just around the corner, promising a delightful start to the summer season. Overall, while May's sunny outlook may not rival the peak summer months, it certainly sets the stage for brighter days ahead.

Percentage of Sunny Days in May in Tartu

The chart illustrates the percentage of sunny days in Tartu throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Tartu experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec5%12%32%39%32%56%56%24%22%31%17%7%
Data source: Tartu May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Tartu in May

In Tartu, Estonia, the shift in daylight throughout the year creates a captivating rhythm that mirrors the changing seasons. Starting with a modest 7 hours in January, daylight gradually increases, reaching 16 hours by May, which invites residents to bask in the extended sun. As spring blossoms, March and April serve as transitional months, showcasing a delightful leap from 11 to 14 hours of light. However, the peak of summer in June dazzles with 18 hours, providing ample opportunity for outdoor exploration. As the warm months roll into autumn, daylight begins to wane, dropping to 12 hours in September and further down to 10 hours in October. The cycle completes with winter's return, where daylight dips back to 7 hours in November before finishing at a dim 6 hours in December, reminding us of the beauty in both light and shadow throughout the year.

Average Daylight Hours in Tartu for May

The chart illustrates the variation in daylight duration in Tartu throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 10m9h 19m11h 52m14h 27m16h 49m18h 9m17h 26m15h 16m12h 45m10h 11m7h 48m6h 27m
Data source: Tartu daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Tartu

In Tartu, Estonia, the winds of May bring a gentle breeze, with an average wind speed of 4.0 m/s (9 mph), slightly lower than the preceding months of March and April. This transition reflects a gradual calming after the brisk winds of early spring. As the year unfolds, the wind speed dips in the summer months of June and July, often falling below 3.5 m/s, providing a more serene atmosphere ideal for outdoor activities. However, as autumn approaches, wind speeds pick up again, peaking at 5.2 m/s (12 mph) in October, signaling the return of stronger gusts. Overall, May stands out as a pivotal month where the winds start to mellow, setting the stage for the warmer summer ahead while still capturing the lingering chill of spring.

Average May Wind Speed in Tartu

The chart displays monthly wind speed patterns in Tartu, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.83.94.84.34.0 m/s2.93.24.44.45.24.94.4
Data source: Tartu May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Tartu Compares to Other Months

Weather in Tartu varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Tartu, focusing on differences in temperature, rainfall, humidity, and UV levels.

May and January present stark contrasts in weather. With January temperatures ranging from a chilling -20°C (-4°F) to a maximum of 8°C (47°F), the month is characterized by its cold and frosty conditions, complemented by a high humidity of 95%. In contrast, May experiences a much warmer climate, with temperatures oscillating from a minimum of -3°C (26°F) to a pleasant maximum of 27°C (81°F), alongside an average of 11°C (52°F). Additionally, May sees a moderate level of precipitation at 56 mm (2.2 in) over 11 days, while January's precipitation totals 38 mm (1.5 in) over just 10 days. For a closer look at what January weather is like, check out Tartu weather in January.

When comparing the weather in May and February, it's evident that there's a significant contrast between the two months. In May, temperatures range from a chilly minimum of -3°C (26°F) to a pleasant maximum of 27°C (81°F), with an average of 11°C (52°F). The month sees about 56 mm (2.2 in) of precipitation over 11 days, accompanied by a moderate humidity level of 73%. In stark contrast, February experiences much colder conditions, with temperatures ranging from a frigid minimum of -24°C (-12°F) to a maximum of just 9°C (48°F) and an average of -3°C (27°F). Precipitation is slightly lower at 42 mm (1.7 in) over 10 days, but the humidity is higher at 93%. This makes February feel much colder and more damp compared to the mild and often sunny days of May. For a more detailed overview, you can check Tartu weather in February.

In comparing the weather between March and May, we observe a significant warming trend. March experiences much colder temperatures, with a minimum of -23°C (-8°F) and an average of 0°C (32°F), while May sees milder conditions, with temperatures ranging from a minimum of -3°C (26°F) to a comfortable average of 11°C (52°F) and highs reaching 27°C (81°F).

Precipitation levels are somewhat similar; March has 45 mm (1.8 in) over 12 days, while May experiences slightly more rain at 56 mm (2.2 in) over 11 days. Humidity is also notably higher in March at 90%, compared to May's 73%, which contributes to the chilliness of that early spring month. For more detailed insights, you can check out Tartu weather in March.

When comparing the weather in May and April, it’s clear that May generally offers warmer and more varied temperatures. In May, temperatures range from a chilly -3°C (26°F) at their lowest to a pleasant 27°C (81°F) at their highest, with an average of 11°C (52°F). In contrast, April has cooler temperatures, with a minimum of -8°C (18°F) and a maximum of 23°C (73°F), averaging just 5°C (41°F).

While both months experience a significant number of rainy days, April sees slightly less precipitation at 49 mm (1.9 in) over 12 days, compared to May's 56 mm (2.2 in) over 11 days. Humidity is higher in April at 87%, whereas May's humidity sits at 73%, contributing to a more comfortable feeling as spring progresses. For a more detailed look at April's conditions, you can check Tartu weather in April.

May and June present a noticeable shift in weather patterns. In May, temperatures range from a chilly minimum of -3°C (26°F) to a moderate maximum of 27°C (81°F), with an average temperature of 11°C (52°F). The month sees approximately 56 mm (2.2 in) of precipitation over 11 days, accompanied by a humidity level of 73%. Conversely, June brings warmer temperatures, with a minimum of 3°C (37°F), an average of 17°C (63°F), and a maximum reaching 32°C (89°F). The precipitation increases slightly to 65 mm (2.6 in) over just 10 days, and humidity also rises to 77%. This progression reflects a transition into a more summery climate. For more details, visit Tartu weather in June.

May and July in Tartu present a notable contrast in weather conditions. In May, temperatures can drop as low as -3°C (26°F) at night, with an average of 11°C (52°F) and highs reaching 27°C (81°F). The month sees about 56 mm (2.2 in) of precipitation over 11 days, accompanied by a humidity level of 73%. In comparison, July experiences warmer temperatures, with minimums of 6°C (43°F), an average of 18°C (65°F), and maximums climbing to 32°C (89°F). Precipitation increases slightly to 65 mm (2.6 in) over 13 days, and humidity rises to 80%. For a more in-depth look at July weather in Tartu, check out Tartu weather in July.

May and August present quite different weather conditions. In May, temperatures range from a chilly minimum of -3°C (26°F) to a pleasant maximum of 27°C (81°F), with an average of 11°C (52°F). The month experiences about 56 mm (2.2 in) of precipitation over 11 days and maintains a humidity level of 73%. In contrast, August brings warmer temperatures, with lows around 7°C (45°F) and highs reaching up to 31°C (87°F), averaging 17°C (62°F). While it sees more precipitation at 79 mm (3.1 in) over 14 days, the humidity also rises to 84%. For more detailed insights into August weather, visit Tartu weather in August.

May and September present a transition in weather patterns, with May typically experiencing slightly milder temperatures. In May, temperatures range from a minimum of -3°C (26°F) to a maximum of 27°C (81°F), averaging around 11°C (52°F). This month sees about 56 mm (2.2 in) of precipitation over 11 days and maintains a humidity level of 73%. Conversely, September offers a cooler temperature range, with minimums of 0°C (32°F) and maximums reaching 26°C (78°F), averaging 13°C (55°F). While it experiences a marginally higher rainfall of 62 mm (2.4 in) over the same 11 days, humidity in September rises to 89%. For more detailed insights, check out Tartu weather in September.

May and October present distinct weather patterns, reflecting the transition between spring and autumn. In May, temperatures typically range from a minimum of -3°C (26°F) to a maximum of 27°C (81°F), with an average of 11°C (52°F). The month sees about 56 mm (2.2 in) of precipitation spread over 11 days, accompanied by a humidity level of 73%. In contrast, October experiences cooler temperatures, with a minimum of -4°C (26°F) and a maximum of 19°C (66°F), averaging around 7°C (46°F). This month is also wetter, receiving approximately 72 mm (2.9 in) of rainfall across 14 days, along with higher humidity at 92%. For more details on what to expect during this month, you can check Tartu weather in October.

May and November in Tartu present contrasting weather patterns that highlight the transition between spring and autumn. In May, temperatures range from a chilly minimum of -3°C (26°F) to a warm maximum of 27°C (81°F), with an average of 11°C (52°F). The month sees approximately 56 mm (2.2 in) of precipitation over 11 days and a moderate humidity level of 73%. In comparison, November is significantly cooler, with temperatures dipping to a minimum of -10°C (15°F) and only reaching a maximum of 12°C (54°F), averaging just 3°C (38°F). Despite having slightly less precipitation at 54 mm (2.1 in) over 10 days, November features higher humidity at 93%. For a more detailed overview of November's weather, visit Tartu weather in November.

May and December showcase a stark contrast in weather conditions. In May, temperatures range from a chilly minimum of -3°C (26°F) to a warm maximum of 27°C (81°F), with an average of 11°C (52°F). The month experiences about 56 mm (2.2 in) of precipitation over 11 days and a moderate humidity level of 73%. In contrast, December brings much colder temperatures, with a minimum dropping to -21°C (-5°F) and a maximum of only 8°C (48°F), resulting in an average temperature of -1°C (30°F). Despite having slightly less precipitation at 54 mm (2.1 in), December has more rainy days at 13 and notably higher humidity at 93%. For those interested in a detailed overview, check out Tartu weather in December.

Compare Tartu's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Tartu

As spring fully unfolds, May in Tartu brings a delightful transition from the lingering chill of winter to the warmth of early summer. With average temperatures reaching a comfortable 11°C, the month stands out with occasional highs of 27°C, offering a taste of summer’s embrace. Unlike the previous months marked by harsher conditions, May enjoys a relatively gentle climate, though it is not without its share of rain, experiencing precipitation on about 11 days. The humidity lingers at around 73%, adding to the freshness in the air. Overall, May is a refreshing month in Tartu, offering a perfect blend of comfortable temperatures and the vibrant awakening of nature. For more insights on the city's climate, explore Tartu Climate.