Last updated: August 27, 2025
In May, Piran, Slovenia experiences delightful weather characterized by an average temperature of 17°C (64°F), peaking at a pleasant 24°C (76°F). The minimum temperature can drop to 10°C (50°F), providing a refreshing breeze. Throughout the month, the region sees approximately 105 mm (4.2 in) of precipitation, with rainfall occurring on about 13 days. The humidity level hovers around 70%, creating a mild atmosphere perfect for exploring this picturesque coastal town. Whether enjoying a seaside stroll or indulging in local cuisine, May in Piran offers a charming blend of warmth and refreshing moisture.
In May, Piran, Slovenia, experiences a delightful transition into spring, with temperatures steadily climbing to create a warm and inviting atmosphere. The month starts with a minimum temperature of 10°C (50°F), giving way to an average of 17°C (64°F) and reaching a pleasant maximum of 24°C (76°F). This upward trend in temperatures signifies the end of the chill that defines earlier months, making May an ideal time for outdoor activities and exploring the stunning coastal scenery. As the days grow longer and warmer, visitors can enjoy the beauty of Piran's charming streets and vibrant hues found in the surrounding landscapes.
May in Piran, Slovenia, typically showcases a significant uptick in precipitation, with 105 mm (4.2 in) falling over 13 days. This marks a notable increase from the preceding months, particularly April, which received 86 mm (3.4 in) across just 8 days. The trend reveals May as a wetter month, indicating a transition into the lushness of late spring. Following a relatively dry spell in July and August, which see lower averages of 49 mm (1.9 in) and 58 mm (2.3 in) respectively, May's showers help rejuvenate the landscape, preparing it for the warm summer months ahead. This pattern of increased moisture during May not only enhances the region's natural beauty but also sets the stage for a robust growing season.
In May, Piran experiences a notable shift in humidity, dropping to 70%, marking a trend of decreasing moisture as spring transitions into summer. This decline continues into June, where humidity decreases slightly further to 69%. The trend reflects a noticeable lightening of the air compared to the winter months, which see much higher levels, such as 88% in January and 89% in November. As the coastal city transitions from the chill of winter to the warmth of summer, May serves as a turning point, offering pleasant conditions ideal for outdoor exploration and enjoyment of Piran’s stunning landscapes.
In May, Piran, Slovenia experiences a notable uptick in UV radiation, with the UV Index reaching 8, categorizing it as very high. This significant increase from April’s index of 6 signals a crucial shift in the sun's intensity, where the recommended burn time reduces sharply to just 15 minutes. As the spring blossoms into early summer, outdoor enthusiasts should take heed, as the risk of skin damage rises considerably. This trend continues into June and July, where the UV Index peaks at 9, emphasizing the need for protective measures. To stay informed and plan your sun exposure wisely, check the detailed Piran UV Index.
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As spring seamlessly transitions into summer, May shines brilliantly in Piran, Slovenia, boasting an impressive 372 hours of sunshine. This delightful month marks a peak in daylight hours that sets the stage for the sun-soaked days to come. With a steady increase from 182 hours in January to May's vibrant total, the trend is clear: the longer days of spring pave the way for summer's even brighter embrace. Just a month prior, April welcomed 344 hours of sunshine, but May emerges as a true standout, eclipsing its predecessor and foreshadowing the consistently sunny June and July that follow. As the warmth of May envelops Piran, it invites locals and visitors alike to revel in the picturesque landscapes, charming coastal views, and blooming gardens, making it a perfect time to explore this enchanting seaside city.
In May, Piran, Slovenia enjoys a 43% chance of sunny weather, which marks a slight decline from the sunnier April (46%) but remains consistent with the monthly trends leading into the summer. As spring progresses, the sunshine likelihood fluctuates, peaking in March at 65% before dropping off slightly through the end of spring. Comparatively, the month of May leads into a brighter June, where the chances rise to 56%, hinting at the approach of the sun-drenched summer months. This gradual transition showcases Piran's characteristically shifting weather, inviting visitors to embrace the beauty of early summer while still enjoying the mild charm of late spring.
As spring transitions into summer, Piran, Slovenia, experiences a significant increase in daylight hours. Starting in January with just 9 hours of daylight, the month of May sees a delightful boost, offering 14 hours of sunshine. This upward trend is evident throughout the early months; after a gradual rise to 13 hours in April, May marks the peak of spring, illuminating the picturesque coastal town with longer days that encourage outdoor activities and exploration. Following this lively month, the summer months of June and July bring the longest days at 15 hours, before gradually tapering off in August and moving back towards shorter daylight hours in the fall. This rhythmic cycle not only enhances the beauty of Piran but also invites both locals and visitors to bask in the increasing warmth and light as the year progresses.
In May, Piran, Slovenia, experiences a noticeable increase in wind activity, with an average wind speed of 4.5 m/s (10 mph), marking a slight uptick from the calmer months of spring. This gentle breeze is a refreshing precursor to the summer season, which generally sees a decline in wind speeds. The trend throughout the year reveals a dynamic pattern, with wind speeds peaking in the autumn and early winter months of October and November, registering at 5.0 m/s (11 mph) and 5.2 m/s (12 mph) respectively. Thus, May serves as a delightful transition, inviting visitors to enjoy the vibrant coastal atmosphere while the winds still whisper hints of the approaching summer calm.
Weather in Piran varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Piran, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January exhibit significantly different weather patterns, reflecting the transition from spring to winter. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 24°C (76°F), with an average of 17°C (64°F). The month sees substantial precipitation, with 105 mm (4.2 in) over 13 days, contributing to a humidity level of 70%. In contrast, January experiences much cooler temperatures, with a minimum of -3°C (27°F) and a maximum of 13°C (56°F), resulting in an average of 7°C (46°F). This winter month has lower precipitation, totaling 58 mm (2.3 in) over just 7 days, but comes with higher humidity at 88%. For more details on January weather, visit Piran weather in January.
When comparing the weather in May and February, a stark contrast emerges. May experiences milder temperatures with a minimum of 10°C (50°F) and an average of 17°C (64°F), reaching a maximum of 24°C (76°F), while February is much colder, presenting a minimum of -3°C (27°F) and an average of 8°C (47°F), peaking at just 13°C (56°F). Both months receive similar amounts of precipitation, with May recording 105 mm (4.2 in) over 13 days, and February slightly less at 106 mm (4.2 in) across 11 days. However, February tends to be more humid at 82%, compared to May's 70%. For a closer look at conditions in February, check out Piran weather in February.
When comparing the weather in March and May, a distinct warming trend is evident. In March, temperatures range from a chilly minimum of -3°C (27°F) to a mild maximum of 16°C (62°F), with an average of 10°C (50°F). The month sees less precipitation, totaling 57 mm (2.3 in) over just 7 days, while humidity levels hover around 73%.
In contrast, May experiences a more comfortable range, with minimum temperatures of 10°C (50°F) and maximums reaching 24°C (76°F), giving an average of 17°C (64°F). Precipitation increases to 105 mm (4.2 in) across 13 days, resulting in a slightly different humidity level of 70%.
For further details on March weather in Piran, you can visit Piran weather in March.
In comparing the weather between April and May, it is evident that May experiences warmer temperatures, with a minimum of 10°C (50°F) and an average of 17°C (64°F), compared to April's minimum of 5°C (42°F) and average of 13°C (56°F). Additionally, May sees a higher maximum temperature of 24°C (76°F) versus April's 20°C (68°F). However, May also brings increased precipitation, totaling 105 mm (4.2 in) over 13 days, compared to April's 86 mm (3.4 in) over just 8 days. Despite the slight decrease in humidity from April's 73% to May's 70%, both months contribute to a pleasantly mild spring atmosphere. For more specific details on the weather in April, you can check out Piran weather in April.
May and June exhibit notable differences in weather patterns. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 24°C (76°F), with an average of 17°C (64°F). The month is relatively wetter, receiving 105 mm (4.2 in) of precipitation over 13 days, contributing to a humidity level of 70%. Conversely, June boasts warmer temperatures, with a minimum of 16°C (61°F) and a maximum of 30°C (86°F), while the average temperature rises to 23°C (73°F). This month also sees significantly less rainfall, totaling 68 mm (2.7 in) across only 5 days, and a similar humidity level of 69%. For a detailed look at the weather in June, check out Piran weather in June.
May and July showcase striking differences in weather patterns. In May, temperatures range from a cool 10°C (50°F) to a pleasant maximum of 24°C (76°F), with an average of 17°C (64°F). However, this month sees considerable rainfall, with precipitation reaching 105 mm (4.2 in) over 13 days and humidity levels at 70%. In contrast, July brings warmer temperatures, with a minimum of 20°C (68°F) and an average peak of 25°C (77°F), soaring up to 29°C (85°F) on the hottest days. Rainfall decreases significantly to 49 mm (1.9 in), falling over just 6 days, and humidity drops to a more comfortable 63%. For those interested in specific weather details for July, check out Piran weather in July.
In May, the weather is characterized by milder temperatures, with nighttime lows around 10°C (50°F) and daytime averages of 17°C (64°F), reaching a maximum of 24°C (76°F). This month sees considerable rainfall, totaling 105 mm (4.2 inches) over approximately 13 days, and a higher humidity level of 70%. In contrast, August experiences warmer conditions, with minimum temperatures of 17°C (63°F) and average highs of 26°C (78°F), peaking at 30°C (87°F). Rainfall drops significantly to 58 mm (2.3 inches) over just 6 days, accompanied by reduced humidity at 51%. For more detailed conditions, check out Piran weather in August.
May and September both offer pleasant weather, but they exhibit distinct differences. In May, temperatures range from a cool 10°C (50°F) at night to a comfortable 24°C (76°F) during the day, with an average temperature of 17°C (64°F). The month sees about 105 mm (4.2 in) of precipitation over 13 days, accompanied by a relatively high humidity of 70%. In contrast, September experiences warmer temperatures, with lows of 14°C (57°F) and highs reaching 28°C (82°F), averaging 22°C (71°F). Although September is slightly drier with 171 mm (6.7 in) of precipitation spread over 10 days, the humidity is lower at 64%. For more detailed information about September weather in Piran, check out Piran weather in September.
May and October exhibit similar average temperatures, with May featuring a minimum of 10°C (50°F) and a maximum of 24°C (76°F) compared to October's minimum of 11°C (52°F) and maximum of 23°C (73°F). Both months see comparable precipitation levels, with May receiving 105 mm (4.2 in) over 13 days and October delivering slightly less at 100 mm (4.0 in) over 10 days. However, October tends to be more humid, with a humidity level of 83%, contrasted with May’s 70%. For those considering a visit, you can learn more about what to expect by checking Piran weather in October.
May and November present contrasting weather conditions. In May, temperatures gently rise, with a minimum of 10°C (50°F), an average of 17°C (64°F), and a maximum reaching 24°C (76°F). This month enjoys moderate humidity at 70%, along with 105 mm (4.2 in) of precipitation spread over 13 days. In contrast, November sees a drop in temperatures, with a minimum of 6°C (42°F) and an average of 13°C (56°F), peaking at 19°C (67°F). The month is also much wetter, receiving 183 mm (7.2 in) of rain over the same number of days, and the humidity rises significantly to 89%. For more detailed insights into the weather patterns in November, you can check Piran weather in November.
May and December present distinct weather patterns, highlighting the transition from spring to winter. In May, temperatures range from a mild minimum of 10°C (50°F) to a pleasant maximum of 24°C (76°F), with an average of 17°C (64°F). While precipitation occurs on approximately 13 days, totaling 105 mm (4.2 in), humidity sits at a moderate 70%. In contrast, December brings cooler temperatures, with a range of 4°C (39°F) to 16°C (60°F) and an average of only 10°C (50°F). Rainfall increases, totaling 150 mm (5.9 in) over 13 days, and humidity rises significantly to 88%. For more insights into December weather, check out Piran weather in December.
As May unfolds in Piran, it brings a refreshing shift from the cooler spring months, with pleasantly mild temperatures that encourage outdoor exploration. While there’s a moderate chance of rain, the overall humidity of the season creates a vibrant, lush landscape that enhances the town's stunning coastal views. This transitional month, characterized by longer daylight hours and a lively atmosphere, sets the stage for the summer ahead, making it an ideal time to immerse yourself in the local culture. To delve deeper into the weather patterns of this charming destination, check out Piran Climate.