May Weather in Primorsko, Bulgaria

Last updated: August 21, 2025

In Primorsko, Bulgaria, May brings a delightful transition into warmer weather, with maximum temperatures reaching 25°C (78°F) and an average of 16°C (61°F). While the month enjoys a pleasant atmosphere, visitors should be prepared for some variability, as the minimum temperature dips to 10°C (50°F). Rainfall is present, with an average of 37 mm (1.5 in) across about 8 days of precipitation, leading to a humidity level of 77%. This balance of warmth and moisture creates a vibrant environment, perfect for exploring the natural beauty of this coastal gem.

May Temperature in Primorsko

In May, Primorsko, Bulgaria, welcomes the warmth of spring with temperatures that truly signify the transition to summer. With minimums averaging around 10°C (50°F) and maximums reaching up to 25°C (78°F), the weather becomes pleasantly mild, inviting outdoor activities and exploration. The average temperature settles at a comfortable 16°C (61°F), making it an ideal time for visitors to enjoy the blooming landscapes and sunlit beaches. Compared to the chillier months of earlier spring, May marks a noticeable shift towards warmth, with temperatures steadily rising as the days grow longer. This trend sets the tone for the enchanting summer season that follows, promising delightful experiences in this charming coastal town.

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

The chart illustrates May temperature patterns in Primorsko, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Primorsko, 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).
JanFebMarAprMayJunJulAugSepOctNovDec414345516170747670625447
Data source: Temperature data for Primorsko 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 Primorsko

In May, Primorsko experiences a noticeable decline in precipitation, with only 37 mm (1.5 in) recorded over 8 rainy days. This marks a significant drop from the wetter spring months preceding it, as April had almost double the rainfall with 57 mm (2.2 in). The transition into late spring is characterized by lighter showers, preparing the region for the drier summer months ahead. Notably, as the year progresses, May's precipitation, while lower than earlier months, sets the stage for warmer weather and a vibrant landscape, reflecting the cyclical nature of Bulgaria's climate.

May Precipitation Trends in Primorsko

The chart displays monthly precipitation patterns in Primorsko, 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 Primorsko, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec98686157375936204010711094
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Primorsko

In Primorsko, Bulgaria, May marks the transition to warmer months, characterized by a moderate humidity level of 77%. This slight uptick from April's 75% signals the onset of the summer season, but it's notably lower than the winter months, which hover around 84% in January and 81% in February. As the year progresses, humidity tends to decrease, reaching its lowest point in August at 60% before gradually rising again in the fall. Overall, May serves as a pleasant midpoint, offering a balance of warmth and humidity that makes the coastal town’s atmosphere vibrant as it prepares for the bustling summer season ahead.

May Average Humidity in Primorsko

This chart illustrates the average monthly humidity levels in Primorsko, 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 Primorsko is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%81%79%75%77%71%69%60%63%76%81%84%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Primorsko

As spring transitions to summer, May in Primorsko, Bulgaria, presents a significant leap in UV exposure, with the UV Index soaring to 9, placing it in the very high category. This dramatic increase, compared to April's UV Index of 7, signals it's time to prioritize sun safety, as the recommended burn time decreases to just 15 minutes. This trend of heightened UV intensity continues into June, July, and August, highlighting the need for protective measures throughout the peak summer months. As you soak up the sun's rays, don’t forget to check the daily UV Index for optimal safety practices. For more detailed insights, visit Primorsko UV Index.

Maximum UV Index Levels in Primorsko for May

The chart shows the monthly maximum UV Index (UVI) for Primorsko 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 Primorsko typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246799997532
Data source: Primorsko 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 Primorsko

May in Primorsko, Bulgaria, is a delightful time when the days grow significantly sunnier, boasting 397 hours of glorious sunlight. This increase from the 348 hours in April marks a turning point as spring gives way to the vibrant energy of summer. The trend continues into June and July, where the sunshine peaks with 409 and 429 hours respectively, creating a perfect backdrop for beach outings and outdoor adventures. As summer starts to wane, the light begins to taper off, with hours dropping to 404 in August before settling down to 342 in September. The gradual decline in sunlight in the months following May adds a sense of anticipation for the cozy autumn days ahead. Overall, May is a bright invitation to embrace the warmth and beauty of Primorsko, heralding the advent of long, sun-soaked days.

Monthly Sunshine Duration in Primorsko: May Highlighted

The May sunshine duration represents the total number of hours Primorsko 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.
JanFebMarAprMayJunJulAugSepOctNovDec162h228h293h348h397h409h429h404h342h285h224h213h
Data source: Primorsko May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Primorsko During May

As spring transitions into summer, May in Primorsko, Bulgaria, heralds a notable rise in the likelihood of sunny weather, with a 48% chance of sun gracing the skies. This marks a slight increase from the previous months, where sunshine probabilities hovered around the 44% range in April. With the approach of June, when the chance jumps to 51%, May serves as a delightful prelude to the warm and sunny days of summer, making it a perfect time for outdoor activities and seaside adventures. This upward trend not only reflects increasing daylight but also amplifies the allure of this charming coastal town, inviting visitors to embrace the beauty of its blossoming landscape.

Percentage of Sunny Days in May in Primorsko

The chart illustrates the percentage of sunny days in Primorsko 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 Primorsko experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec27%43%45%44%49%51%80%77%49%25%28%30%
Data source: Primorsko May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Primorsko in May

As the seasons transition in Primorsko, Bulgaria, daylight duration experiences a captivating evolution. Starting with a modest 9 hours in January, the days gradually lengthen, reaching a peak of 15 hours by June. The month of May stands out with an inviting 14 hours of daylight, hinting at the bright blooms and vibrant activities that spring encourages. Following this zenith, daylight begins its gentle decline, with July and August providing slightly shorter days, yet still generous at 14 and 13 hours respectively. This rhythmic pattern showcases the natural ebb and flow of daylight, embodying the changes of the seasons that define Primorsko's enchanting atmosphere throughout the year.

Average Daylight Hours in Primorsko for May

The chart illustrates the variation in daylight duration in Primorsko throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 28m10h 33m11h 57m13h 22m14h 35m15h 12m14h 52m13h 48m12h 26m11h 1m9h 46m9h 7m
Data source: Primorsko daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Primorsko

In May, the coastal charm of Primorsko, Bulgaria is accompanied by a gentle breeze, with average wind speeds reaching 3.7 m/s (8 mph). This slight uptick from April’s 3.5 m/s (8 mph) suggests a transition towards more lively weather as the region springs into life. Compared to the earlier months of the year, notably January and October, where winds can ascend to 5.6 m/s (13 mph) and 5.9 m/s (13 mph) respectively, May's breezes feel refreshingly mild. This trend continues into early summer, with June recording a slight dip in wind speed at 3.1 m/s (7 mph), making May a perfect time to enjoy outdoor activities without the overwhelming gusts typical of the transitional months.

Average May Wind Speed in Primorsko

The chart displays monthly wind speed patterns in Primorsko, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.64.94.93.53.7 m/s3.13.83.74.85.94.56.0
Data source: Primorsko May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Primorsko Compares to Other Months

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

May and January present vastly different weather patterns. In May, temperatures range from a pleasant minimum of 10°C (50°F) to a maximum of 25°C (78°F), with an average of 16°C (61°F). This month experiences moderate precipitation of 37 mm (1.5 in) over about 8 days, coupled with a humidity level of 77%. In contrast, January is considerably colder, with temperatures dipping as low as -7°C (19°F) and averaging just 5°C (42°F). The highest temperatures reach only 16°C (61°F), but January sees much more precipitation, totaling 98 mm (3.9 in), spread over 11 days, and slightly higher humidity at 84%. For more detailed information, you can check out Primorsko weather in January.

In comparing the weather between May and February, notable differences emerge. May boasts a much milder climate, with temperatures ranging from a minimum of 10°C (50°F) to a pleasant maximum of 25°C (78°F), averaging around 16°C (61°F). It also experiences lower precipitation at 37 mm (1.5 in) over 8 days, alongside a humidity level of 77%. In contrast, February presents a chilly atmosphere, with temperatures dipping as low as -4°C (26°F) and reaching a maximum of 16°C (61°F), averaging just 6°C (44°F). This month sees higher precipitation levels at 68 mm (2.7 in) over 9 days, coupled with slightly higher humidity at 81%. For a more detailed insight into February weather, you can check Primorsko weather in February.

In comparing the weather between March and May, a noticeable difference in temperature and conditions can be observed. May typically offers milder temperatures, ranging from a minimum of 10°C (50°F) to a maximum of 25°C (78°F), with an average of 16°C (61°F). This is a stark contrast to March, which sees cooler temperatures, with a minimum of -6°C (21°F) and a maximum of 19°C (66°F), averaging around 7°C (46°F). Additionally, March experiences higher precipitation levels, with 61 mm (2.4 in) over approximately 10 days, compared to May's 37 mm (1.5 in) over 8 days. Despite March having slightly higher humidity at 79%, the warmth of May often makes it feel more comfortable. For more details, you can check Primorsko weather in March.

In comparing the weather between April and May, we see a noticeable increase in temperatures and a slight decrease in precipitation. May boasts a minimum temperature of 10°C (50°F) and an average of 16°C (61°F), while April's temperatures are cooler, with a minimum of 4°C (40°F) and an average of 10°C (51°F). Additionally, May reaches a maximum of 25°C (78°F), compared to April's peak of 22°C (72°F). Precipitation is also less in May, totaling 37 mm (1.5 in) over 8 days, while April experiences 57 mm (2.2 in) over the same number of days. Both months have similar humidity levels, with May at 77% and April at 75%. For more detailed information about April weather, check out Primorsko weather in April.

In May, temperatures generally range from a minimum of 10°C (50°F) to a maximum of 25°C (78°F), with an average temperature of 16°C (61°F). The month experiences moderate precipitation, totaling 37 mm (1.5 in) over about 8 days, and humidity levels are relatively high at 77%. In contrast, June brings warmer weather, with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 29°C (84°F), and an average of 21°C (70°F). However, June is slightly wetter, receiving 59 mm (2.3 in) of precipitation over approximately 9 days, while humidity decreases to 71%. For more detailed information, you can check Primorsko weather in June.

In May, the weather is characterized by cooler temperatures, with a minimum of 10°C (50°F) and an average of 16°C (61°F), peaking at 25°C (78°F). The month experiences moderate rainfall, with 37 mm (1.5 in) over approximately 8 days and a higher humidity level of 77%. In contrast, July brings significantly warmer weather, with temperatures ranging from a minimum of 18°C (65°F) to a comfortable average of 24°C (75°F) and highs reaching 30°C (87°F). Rainfall is slightly less, at 36 mm (1.4 in) over just 6 days, accompanied by a lower humidity of 69%. For more details about the weather in July, visit Primorsko weather in July.

May and August present notably different weather patterns. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 25°C (78°F), with an average of 16°C (61°F). The month sees around 37 mm (1.5 in) of precipitation over approximately 8 days, and humidity levels are relatively high at 77%. In contrast, August experiences warmer temperatures, with the minimum at 18°C (65°F) and the maximum reaching 31°C (88°F), averaging 24°C (76°F). Precipitation is considerably lower in August, totaling just 20 mm (0.8 in) over 3 days, and the humidity drops to 60%. For more details on the weather in August, visit Primorsko weather in August.

In May, temperatures typically range from a minimum of 10°C (50°F) to a maximum of 25°C (78°F), with an average of 16°C (61°F). The month experiences around 37 mm (1.5 in) of precipitation across 8 days, accompanied by relatively high humidity levels of 77%. In contrast, September brings slightly warmer weather, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 29°C (85°F) and an average of 21°C (71°F). Precipitation in September is marginally higher at 40 mm (1.6 in) but occurs over just 7 days, and the humidity decreases to a more comfortable 63%. For more insights, check Primorsko weather in September.

When comparing the weather in May and October, both months experience mild temperatures, but October tends to be slightly warmer on average, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 28°C (83°F), compared to May's range of 10°C (50°F) to 25°C (78°F). Precipitation levels are notably higher in October, accumulating 106 mm (4.2 in) over 10 days, while May sees 37 mm (1.5 in) over 8 days. Additionally, humidity is relatively consistent, hovering around 77% in May and slightly lower at 76% in October. For more details about October weather, visit Primorsko weather in October.

May and November present quite a contrast in weather conditions. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 25°C (78°F), with an average of 16°C (61°F). The month sees relatively low precipitation at 37 mm (1.5 in) over about 8 days, and humidity levels are around 77%. In contrast, November features cooler temperatures, with a minimum of 2°C (36°F), an average of 12°C (55°F), and a maximum of 22°C (72°F). This month experiences significantly higher precipitation at 110 mm (4.3 in) spread over 13 days, along with a slightly higher humidity of 81%. For more detailed information, you can check Primorsko weather in November.

May and December present quite a contrast in weather. In May, temperatures range from a mild 10°C (50°F) at night to a warm average of 16°C (61°F) and can reach highs of 25°C (78°F). With only 37 mm (1.5 in) of precipitation spread over about 8 days, the month tends to feel relatively dry, though humidity hovers around 77%.

In stark contrast, December experiences much colder weather, with minimum temperatures dropping to -2°C (28°F) and an average temperature of 8°C (48°F). Highs reach a more moderate 18°C (65°F), but the month is significantly wetter, accumulating 94 mm (3.7 in) of precipitation over 12 days and displaying higher humidity at 84%. For a closer look at what to expect, check out Primorsko weather in December.

Compare Primorsko's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Primorsko

As May arrives in Primorsko, it breathes new life into the region, marked by pleasantly warm temperatures, where daytime highs reach a comfortable 25°C (78°F). This transitional month showcases a delightful balance, with an average temperature of 16°C (61°F), setting it apart from the cooler days of early spring and the rising heat of summer. While occasional rainfall may grace about a third of the month, totaling around 37 mm, the humidity hovers at a moderate 77%, making it an ideal time for outdoor adventures. For those seeking to explore Primorsko's climate, this vibrant month offers a beautiful prelude to the summertime. For detailed insights, you can check out Primorsko Climate.