May Weather in Kalofer, Bulgaria

Last updated: August 21, 2025

In May, Kalofer, Bulgaria experiences a delightful mix of springtime warmth and occasional showers. With a maximum temperature reaching 31°C (87°F), the average level hovers around a comfortable 16°C (62°F), while nighttime brings cooler temperatures as low as 3°C (38°F). This month witnesses about 72 mm (2.8 in) of precipitation spread over 13 days, resulting in a humidity level of 73% that adds to the vibrant freshness of the landscape. Whether you’re exploring the picturesque surroundings or enjoying local events, May in Kalofer offers a rejuvenating experience enriched by nature's bounty.

May Temperature in Kalofer

In Kalofer, Bulgaria, the month of May marks a delightful transition into warmer weather, with temperatures rising significantly from the chilly grip of winter. As spring unfolds, the minimum temperature hovers around 3°C (38°F), while the **average climbs to a pleasant 16°C (62°F), reaching a delightful peak of 31°C (87°F) on the warmest days. This steady increase in warmth contrasts sharply with the preceding months, where temperatures remain well below freezing at times. May’s inviting climate encourages outdoor activities and blooming landscapes, offering a refreshing escape and promising the full embrace of summer just around the corner. It’s a month that showcases the beauty of nature awakening, perfectly complemented by the comforting warmth that invites all to enjoy Bulgaria’s spirited springtime.

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

The chart illustrates May temperature patterns in Kalofer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kalofer, 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).
JanFebMarAprMayJunJulAugSepOctNovDec333843526168727466554638
Data source: Temperature data for Kalofer 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 Kalofer

May in Kalofer, Bulgaria, marks a significant increase in precipitation, with 72 mm (2.8 in) of rainfall over 13 days. This uptick in wet weather transitions the region from the milder conditions of April, which saw only 49 mm (1.9 in) across 9 days. As spring fully unfolds, the higher precipitation levels contribute to the lush greenery that characterizes the landscape, while also setting the stage for the even wetter months ahead, particularly June, which averages 119 mm (4.7 in) over 18 days. The trend of increasing rainfall not only highlights May's role as a transition month but also underscores the gradual shift from spring into the more dynamic summer weather patterns.

May Precipitation Trends in Kalofer

The chart displays monthly precipitation patterns in Kalofer, 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 Kalofer, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec43427049721191003720585371
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Kalofer

In May, the humidity in Kalofer, Bulgaria, reaches 73%, marking a slight increase from the drier month of April, which stands at 71%. This upward trend hints at the arrival of warmer weather, as the region transitions from spring to summer. Observing the broader context, the humidity levels experience a notable decline from the chill of winter months—where January and February soar at 89% and 85%, respectively. As summer approaches, June and July further exhibit this trend, dipping to 67% and 68%. Overall, May’s humidity reflects a mild and comfortable atmosphere, inviting residents and visitors alike to enjoy the blooming scenery before the peak summer heat sets in.

May Average Humidity in Kalofer

This chart illustrates the average monthly humidity levels in Kalofer, 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 Kalofer is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%85%83%71%73%67%68%50%59%79%87%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Kalofer

In May, Kalofer, Bulgaria, experiences a significant rise in the UV Index, reaching an impressive 9, signifying very high exposure levels. This increase follows a trend that began in April and is sustained through June, highlighting the shift toward summer when sun exposure risks are at their peak. With a burn time of just 15 minutes, locals and visitors alike are urged to take precautions, such as wearing sunscreen and protective clothing, to avoid sunburn. This pattern of intensifying UV radiation underscores the importance of staying informed and safe under the sun. For more detailed information, check out the Kalofer UV Index.

Maximum UV Index Levels in Kalofer for May

The chart shows the monthly maximum UV Index (UVI) for Kalofer 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 Kalofer typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2468910997632
Data source: Kalofer 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 Kalofer

May in Kalofer, Bulgaria, is a vibrant celebration of sunshine, boasting 393 hours of radiant daylight—a significant leap from the earlier months. This upward trend begins in January with just 176 hours, gradually gaining momentum through the spring as the days grow longer and the landscape bursts into life. The warmth of April at 346 hours sets the stage for May's sun-drenched splendor, which is only surpassed by the peak summer month of June, where sunshine reaches 400 hours. The consistent increase in sunlight from the chill of winter through to the warmth of spring not only enhances the beauty of Kalofer but also invites outdoor adventures and leisurely strolls through its picturesque scenery. As the year progresses, the sunshine hours reflect a rhythmic ebb and flow, transitioning from the cosy embrace of winter light into the brilliance of summer days.

Monthly Sunshine Duration in Kalofer: May Highlighted

The May sunshine duration represents the total number of hours Kalofer 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.
JanFebMarAprMayJunJulAugSepOctNovDec176h237h288h346h393h400h427h403h344h291h232h220h
Data source: Kalofer May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kalofer During May

In Kalofer, Bulgaria, the likelihood of sunny weather in May stands at 45%, aligning closely with the conditions seen in the preceding spring months, namely April and March. This consistency hints at a gradual warming trend, as the chances of sunshine begin to climb from the cooler winter months. May acts as a transition phase before the summer peaks in July and August, where sunny days surge to 78% and 75%, respectively. As the year progresses, it's clear that Kalofer transforms into a sunlit destination, making May a delightful prelude to the vibrant summer ahead.

Percentage of Sunny Days in May in Kalofer

The chart illustrates the percentage of sunny days in Kalofer 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 Kalofer experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec29%49%47%45%45%47%78%75%53%40%33%33%
Data source: Kalofer May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kalofer in May

In Kalofer, Bulgaria, May marks a delightful transition into longer days, with 14 hours of daylight illuminating the landscape. This increase in sunlight follows a gradual ascent from the 9 hours seen in January, as spring takes hold and the days steadily lengthen. April's 13 hours hint at the approaching warmth of summer, setting the stage for May's vibrant days. As the month progresses, the daylight duration reaches its annual peak in June, offering 15 hours, before gently receding again in the latter summer months. This trend not only enriches the natural beauty of Kalofer but also encourages outdoor activities and community gatherings, as the locals embrace the longer, sun-filled days.

Average Daylight Hours in Kalofer for May

The chart illustrates the variation in daylight duration in Kalofer throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 27m10h 33m11h 57m13h 23m14h 36m15h 13m14h 53m13h 49m12h 26m11h 1m9h 45m9h 6m
Data source: Kalofer daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Kalofer

In Kalofer, Bulgaria, May marks a subtle yet steady transition in the wind patterns of the year. With an average wind speed of 1.9 m/s (4 mph)—the same as in March and December—May maintains a mild and refreshing breeze as spring blooms into summer. The winds are slightly more robust than those seen in April and February, which both recorded 1.7 m/s (4 mph), while the summer months ahead hint at even lower speeds, as seen in June's 1.5 m/s (3 mph). This consistency in wind speed from January through May reflects a gentle stability, creating an inviting atmosphere for outdoor activities as the vibrant energy of late spring envelops Kalofer.

Average May Wind Speed in Kalofer

The chart displays monthly wind speed patterns in Kalofer, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.91.71.91.71.9 m/s1.51.91.61.61.51.41.9
Data source: Kalofer May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Kalofer Compares to Other Months

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

May and January present strikingly different weather conditions. In May, temperatures range from a minimum of 3°C (38°F) to a maximum of 31°C (87°F), with an average of 16°C (62°F), making it a significantly warmer month. May also experiences higher precipitation, with about 72 mm (2.8 in) falling over 13 days, accompanied by a humidity level of 73%. In contrast, January is much colder, with temperatures ranging from a frigid -18°C (-1°F) to a maximum of 15°C (59°F) and an average of just 1°C (33°F). The month is drier, with only 43 mm (1.7 in) of precipitation over 7 days, despite its higher humidity of 89%. For a closer look at winter conditions, you can check Kalofer weather in January.

May and February present distinct weather contrasts. In May, temperatures range from a chilly 3°C (38°F) to a warm 31°C (87°F), with an average of 16°C (62°F), making it a much more pleasant month overall. Rainfall is relatively moderate at 72 mm (2.8 in) over 13 days, and humidity sits at a comfortable 73%. In contrast, February is significantly colder, featuring a temperature spectrum from -13°C (9°F) to a maximum of 19°C (66°F), and an average temperature of just 3°C (39°F). While precipitation is lower at 42 mm (1.6 in) over 7 days, the humidity is higher at 85%, creating a much more frigid atmosphere. For more detailed information about weather in February, you can visit Kalofer weather in February.

In comparing the weather between March and May, a noticeable transition in temperatures occurs. March experiences a much colder climate, with minimum temperatures dropping to -20°C (-3°F) and an average around 6°C (43°F), while May showcases milder conditions, with minimums of 3°C (38°F) and averages reaching up to 16°C (62°F). Both months see a similar amount of precipitation—70 mm (2.7 in) in March compared to 72 mm (2.8 in) in May—but March is slightly drier with precipitation over 11 days, compared to May's 13 days. Additionally, humidity levels remain relatively high in both months, with March at 83% and May at 73%. For more specific information on Kalofer’s weather in March, check out Kalofer weather in March.

In comparing the weather between April and May, a noticeable shift in temperature and precipitation can be observed. April experiences cooler temperatures, with a minimum of -3°C (28°F) and an average of 11°C (52°F), while May warms up significantly, featuring a minimum of 3°C (38°F) and an average of 16°C (62°F). Additionally, the maximum temperatures rise, with April reaching 27°C (81°F) compared to May's peak of 31°C (87°F). Precipitation levels also increase from April's 49 mm (1.9 in) over 9 days to May's 72 mm (2.8 in) over 13 days, suggesting a wetter month ahead. Despite the increase in rainfall, humidity remains relatively static, at 71% in April and slightly higher at 73% in May. For further details, you can explore Kalofer weather in April.

May and June offer distinct weather characteristics. In May, temperatures range from a cool 3°C (38°F) at night to a pleasant average of 16°C (62°F) during the day, peaking at 31°C (87°F). The month sees about 72 mm (2.8 in) of precipitation over 13 days, contributing to a relatively humid atmosphere with an average humidity of 73%. In contrast, June experiences warmer nights with a minimum temperature of 7°C (44°F) and an average of 20°C (68°F), reaching highs of 35°C (96°F). However, it also brings increased rainfall, with 119 mm (4.7 in) falling over 18 days, while humidity slightly decreases to 67%. For more details on June weather, you can explore Kalofer weather in June.

May and July exhibit distinct differences in weather patterns. In May, temperatures range from a chilly minimum of 3°C (38°F) to a warm maximum of 31°C (87°F), with an average of 16°C (62°F). This month sees a fair amount of rainfall, accumulating 72 mm (2.8 in) over 13 days, coupled with a humidity level of 73%.

In contrast, July is noticeably warmer, with minimum temperatures starting at 11°C (52°F) and soaring to a maximum of 37°C (99°F), averaging 22°C (73°F). This month experiences slightly higher precipitation at 100 mm (3.9 in) across just 12 days, while humidity drops to 68%. For more details about weather conditions in July, visit Kalofer weather in July.

When comparing the weather in May and August, notable differences emerge in temperature and humidity levels. May typically sees a wider range of temperatures, with a minimum of 3°C (38°F) and a maximum of 31°C (87°F), while the average temperature hovers around 16°C (62°F). In contrast, August is generally warmer, with a minimum temperature of 10°C (50°F) and a maximum that can soar to 39°C (102°F), averaging at 23°C (74°F). Additionally, May experiences more precipitation, accumulating 72 mm (2.8 inches) over 13 days, compared to the drier August with only 37 mm (1.5 inches) of rain over just 6 days. The humidity is also significant in May at 73%, but drops to a more comfortable 50% in August. For more detailed information, you can check Kalofer weather in August.

In May, the weather is characterized by a moderate temperature range with a minimum of 3°C (38°F) and an average of 16°C (62°F), climbing to a maximum of 31°C (87°F). This month experiences significant precipitation, with 72 mm (2.8 in) falling over approximately 13 days, resulting in a higher humidity level of 73%. In contrast, September boasts slightly cooler temperatures, with a minimum of 1°C (34°F) and an average of 19°C (66°F), peaking at 34°C (94°F). The level of precipitation drops dramatically to 20 mm (0.8 in) over just 4 days, leading to a lower humidity of 59%. For more insights on September weather, you can visit Kalofer weather in September.

In comparing the weather between May and October, we can see distinct differences in temperature and precipitation patterns. May typically experiences warmer temperatures, with a minimum of 3°C (38°F), an average of 16°C (62°F), and a maximum of 31°C (87°F). Meanwhile, October sees cooler temperatures, ranging from a minimum of 1°C (34°F) to an average of 13°C (55°F), while still reaching a maximum of 31°C (88°F). Precipitation in May is higher, averaging 72 mm (2.8 in) over 13 days, compared to October's 58 mm (2.3 in) over just 7 days. Additionally, October exhibits slightly higher humidity levels at 79%, in contrast to May's 73%. For more specific insights into October weather, visit Kalofer weather in October.

May and November present contrasting weather experiences. In May, temperatures range from a mild 3°C (38°F) at night to a warm 31°C (87°F) during the day, with an average of 16°C (62°F). This month sees 72 mm (2.8 in) of precipitation over 13 days, coupled with a humidity level of 73%, making it a month of blossoming nature and occasional showers.

In contrast, November features cooler temperatures, with nighttime lows dipping to -4°C (26°F) and daytime highs reaching a maximum of 25°C (77°F), resulting in a lower average temperature of 8°C (46°F). The month is drier than May, with 53 mm (2.1 in) of precipitation falling over just 7 days, but it is also more humid at 87%. For more detailed insights into the November weather, you can visit this link: Kalofer weather in November.

May and December exhibit stark contrasts in weather conditions. May typically experiences a broader temperature range, with minimums reaching 3°C (38°F) and maximums soaring up to 31°C (87°F), resulting in a comfortable average of 16°C (62°F). In contrast, December is significantly colder, with temperatures ranging from a chilly -11°C (12°F) as a minimum to a maximum of 16°C (62°F), yielding an average of just 3°C (38°F). Both months see similar precipitation levels, around 72 mm (2.8 in), but May has slightly more rain spread over 13 days compared to December's 71 mm (2.8 in) over 10 days. Moreover, December tends to be more humid, with humidity levels rising to 89% compared to May's 73%. For more details on December weather in Kalofer, please visit Kalofer weather in December.

Compare Kalofer's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Kalofer

May in Kalofer is a blooming transition month that stands out with its refreshing warmth and increased precipitation, setting it apart from the cooler and more arid months of winter. As temperatures rise, the city experiences a delightful blend of sunny days and occasional rain, nurturing the vibrant flora that adorns the landscape. With an average humidity of 73%, the air is pleasantly fresh, making outdoor activities particularly enjoyable. Unlike the extreme temperatures seen in summer, May offers a comfortable warmth, inviting both locals and visitors to explore the captivating surroundings. For a deeper glimpse into Kalofer's seasonal patterns, check out Kalofer Climate.