Last updated: August 27, 2025
In Portoroz, Slovenia, June unveils a delightful blend of warmth and refreshing breezes, with maximum temperatures reaching 30°C (86°F) and an average of 23°C (73°F). The evenings cool down to a comfortable 16°C (61°F), perfect for savoring outdoor activities. Throughout the month, the region experiences occasional rainfall, totaling 68 mm (2.7 in) over just five days, fostering lush landscapes. With a humidity level of 69%, the atmosphere remains pleasantly inviting, making June an ideal time to explore the picturesque coastal charm of Portoroz.
In June, Portorož, Slovenia, truly begins to embrace the warmth of summer, with temperatures making a notable leap from the mild delights of spring. The minimum temperature rises to a comfortable 16°C (61°F), while the average temperature reaches a pleasant 23°C (73°F), culminating in maximums that can soar up to 30°C (86°F). This steady climb reflects a clear trend of increasing warmth as the year progresses, with June marking a pivotal shift from the coolness of earlier months. Visitors can expect long, sun-soaked days perfect for exploring the city's stunning coastline and vibrant culture, making it an ideal time for outdoor activities and relaxation by the sea.
In June, Portorož experiences a pleasant balance in its precipitation, with a total of 68 mm (2.7 in) spread across just 5 days, making it one of the drier months of the year. This pattern continues the trend observed from May, which saw a slightly higher rainfall yet significantly more rainy days at 13. The onset of summer brings a subtle decrease in precipitation, with July and August showing even less rainfall at 49 mm (1.9 in) and 58 mm (2.3 in), respectively. This consistent decline from May to July highlights the transition into sunnier and drier summer months, offering visitors a delightful opportunity to enjoy the warmth of the Adriatic coast.
In June, Portorož, Slovenia, experiences a moderate decrease in humidity, with levels dropping to 69%. This marks a continuation of the downward trend observed since May, where the humidity registered at 70%. As summer approaches, humidity levels continue to decline, reaching their lowest in July at 63%. This pattern suggests a shift away from the higher humidity of the winter months, which see readings around 88% in January and 89% in November, creating a refreshing atmosphere as the region transitions into the sunnier seasons. Overall, June offers a delightful balance, with humidity levels that are comfortable yet noticeably lower than the earlier months, inviting visitors to enjoy the seaside charm of Portorož.
In June, Portorož experiences one of its highest UV Index levels of the year, peaking at 9, classified as very high. This significant rise in UV exposure—similar to that of July—indicates a sharp increase in sun intensity since the moderate levels seen in earlier months like January and February. With a burn time of just 15 minutes, sunscreen becomes essential for outdoor activities. As summer approaches, the trend shows a clear escalation in UV risks, underscoring the importance of sun protection. For detailed information, visit Portoroz UV Index.
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As June arrives in Portoroz, Slovenia, the sun shines brighter than any other month of the year, basking the coastal town in a stunning 417 hours of sunlight. This marks a delightful upward trend, as the hours of sunshine have steadily increased since the year began, climbing from a modest 182 hours in January to a glorious zenith in June. Following the sun-kissed days of June, July continues the trend with even more light—430 hours. However, the gradual decline begins in August, where the sunny embrace holds at 397 hours before tapering off in the autumn months. This pattern not only highlights the vibrant summer allure of Portoroz but also invites visitors to soak in its warm rays and relish the seasonal charm before the sun begins to retreat.
As June approaches in Portoroz, Slovenia, the chances of sunny weather rise significantly, reaching 56%—a delightful midpoint in the annual trend of sunshine. This upward trajectory starts in early spring; while January and February face gloomier days with only 31% and 42% chance of sun, the likelihood steadily improves through March, when it peaks at 65%. However, April and May see a slight dip, reminding us that spring can be unpredictable. As summer unfolds, July and August boast higher probabilities of sun exposure at 51% and 62%, respectively. June stands out as a month of transition, offering a promising start to the sun-drenched days that characterize the region in the height of summer.
As June arrives in Portorož, Slovenia, the long-awaited summer days offer 15 hours of daylight, marking a peak in the annual progression of sunlight. This increase is a delightful continuation of the gradual lengthening that began in January with just 9 hours. Each month, more light bathes the coastal town, from 10 hours in February to a vibrant 14 hours in May. June’s extended daylight not only encourages outdoor activities and exploration but also heralds the height of the season, before the gradual decline begins again in July and August. As the year moves towards autumn, daylight will recede, reflecting the natural rhythm of the seasons; yet, for now, June stands as a brilliant reminder of the vitality and warmth that the longer days bring.
In June, Portorož experiences a gentle breeze with an average wind speed of 3.1 m/s (7 mph), marking a noticeable dip compared to the preceding months. This decline follows a pattern of increasing wind speeds in spring, which peaked at 4.5 m/s (10 mph) in May. As summer unfolds, the calming winds continue into July and August, where speeds remain relatively low, indicating a tranquil atmosphere perfect for seaside relaxation. Notably, wind speeds begin to rise again in the fall, hinting at the changing seasons ahead. The June breeze, while softer, invites visitors to enjoy the warm coastal ambiance of Slovenia's picturesque landscape.
Weather in Portoroz varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in Portoroz, focusing on differences in temperature, rainfall, humidity, and UV levels.
June and January showcase strikingly different weather patterns. In June, temperatures range from a mild 16°C (61°F) at night to a warm 30°C (86°F) during the day, with an average of 23°C (73°F). The month sees about 68 mm (2.7 in) of precipitation over 5 days and features humidity levels around 69%. In contrast, January experiences much colder temperatures, with a minimum of -3°C (27°F) and a maximum of just 13°C (56°F), averaging 7°C (46°F). It also records approximately 58 mm (2.3 in) of precipitation over 7 days but boasts higher humidity at 88%. For a more detailed look at January weather, you can visit Portoroz weather in January.
When comparing the weather in June and February, significant contrasts emerge. June boasts milder temperatures, with averages around 23°C (73°F) and highs reaching up to 30°C (86°F), making it a much warmer month overall. In stark contrast, February experiences much cooler conditions, with average temperatures around 8°C (47°F) and a maximum of only 13°C (56°F). Precipitation is also noteworthy; June sees 68 mm (2.7 in) of rain over approximately 5 days, while February receives a higher total of 106 mm (4.2 in) spread over 11 days, resulting in greater humidity levels at 82% in February compared to 69% in June. For more details about February weather, visit Portoroz weather in February.
When comparing the weather in June and March, it's evident that June offers significantly warmer temperatures, with averages around 23°C (73°F) and a maximum of 30°C (86°F), compared to March's average of only 10°C (50°F) and a maximum of 16°C (62°F). Notably, March can experience quite cold nights, with minimum temperatures dropping to -3°C (27°F), while June maintains a much milder minimum of 16°C (61°F). Precipitation levels are fairly close, with March receiving 57 mm (2.3 in) over 7 days and June experiencing 68 mm (2.7 in) over 5 days, though June is generally sunnier. Both months have relatively high humidity, with March at 73% and June at 69%. For more details on March weather specifically, you can visit Portoroz weather in March.
In comparing the weather between June and April, June tends to be significantly warmer, with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 30°C (86°F), compared to April's cooler temperatures that range from 5°C (42°F) to 20°C (68°F). While June has lower precipitation, with 68 mm (2.7 in) over 5 days, April experiences slightly more rain at 86 mm (3.4 in) across 8 days. Additionally, the humidity in June is slightly lower at 69%, whereas April maintains a higher level of humidity at 73%. For a more detailed look at April's climate, you can visit Portoroz weather in April.
In comparing the weather of May and June, it's clear that June offers warmer conditions overall. While May sees average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 24°C (76°F), June’s averages are notably higher, with temperatures ranging from 16°C (61°F) to 30°C (86°F). However, May experiences more precipitation, with 105 mm (4.2 in) falling over 13 days, compared to June’s 68 mm (2.7 in) over just 5 days. Humidity levels remain relatively similar, at 70% in May and 69% in June. For a more detailed look at May weather, you can check out Portoroz weather in May.
In comparing the weather of June and July, we see a noticeable shift in temperature and humidity. June typically experiences a minimum temperature of 16°C (61°F) and averages around 23°C (73°F), peaking at 30°C (86°F). In contrast, July has slightly warmer temperatures, with a minimum of 20°C (68°F) and an average of 25°C (77°F), while the maximum temperature remains fairly stable at 29°C (85°F).
Precipitation also differs between the two months; June receives more rainfall at 68 mm (2.7 in) over 5 days, whereas July has a lower precipitation total of 49 mm (1.9 in) over 6 days. Additionally, the humidity decreases from 69% in June to 63% in July, making July feel a bit drier. For more specific details on the weather in July, you can check the following link: Portoroz weather in July.
In comparing the weather between June and August, June tends to have slightly cooler temperatures, with an average of 23°C (73°F) compared to August's warmer average of 26°C (78°F). Both months experience a maximum temperature that peaks at around 30°C (86°F in June and 87°F in August), but June has a higher level of humidity at 69%, making it feel a bit more humid compared to August's more comfortable 51%. Additionally, while June sees about 68 mm (2.7 in) of precipitation over 5 days, August has slightly less rainfall at 58 mm (2.3 in) over 6 days. For a more detailed look at August weather, you can visit Portoroz weather in August.
June typically boasts warmer temperatures, with daily averages around 23°C (73°F) and highs reaching up to 30°C (86°F). Although the month has some rainfall, totaling 68 mm (2.7 in) over about 5 days, humidity remains relatively high at 69%.
In contrast, September experiences slightly cooler temperatures, ranging from a minimum of 14°C (57°F) to an average of 22°C (71°F), with a maximum of 28°C (82°F). However, it tends to be wetter, with precipitation reaching 171 mm (6.7 in) over approximately 10 days, while humidity decreases to 64%. For more detailed insights, check the Portoroz weather in September.
June and October present distinct contrasts in weather conditions. June typically boasts warmer temperatures, with average highs reaching 30°C (86°F) and an average of 23°C (73°F), while October sees cooler averages, peaking at 23°C (73°F) but often dropping to a chilly 11°C (52°F) at night. Additionally, October experiences more rainfall, accumulating around 100 mm (4.0 in) over 10 days compared to June’s 68 mm (2.7 in) spread across just 5 days. The humidity also increases from June’s 69% to October’s 83%, contributing to a more damp and cooler atmosphere. For a closer look at the weather specifics, you can check Portoroz weather in October.
June and November present stark contrasts in weather. June enjoys milder temperatures, with a minimum of 16°C and an average of 23°C, peaking at 30°C, making it ideal for outdoor activities. However, it also sees some precipitation, amounting to 68 mm over about 5 days, coupled with a humidity level of 69%. In contrast, November is much cooler, with temperatures ranging from a minimum of 6°C to an average of 13°C, and a maximum of 19°C. This month experiences considerably higher rainfall, totaling 183 mm over 13 days, and the humidity rises to 89%, creating a noticeably damp atmosphere. For more details on the weather in this month, you can visit Portoroz weather in November.
June and December present contrasting weather conditions in Portorož. In June, temperatures range from a mild 16°C (61°F) at night to a warm 30°C (86°F) during the day, with average temperatures around 23°C (73°F). The month sees about 68 mm (2.7 in) of rainfall spread over just five days, making it relatively dry. In contrast, December offers a much cooler climate, with temperatures dipping to a minimum of 4°C (39°F) and only reaching a maximum of 16°C (60°F), averaging around 10°C (50°F). The month is notably wetter, with 150 mm (5.9 in) of precipitation over 13 days and higher humidity levels at 88%. For more specific climate details, you can check Portoroz weather in December.
June in Portoroz ushers in the warmth of summer, showcasing beautifully balmy temperatures that invite outdoor adventures and leisurely strolls along the coast. With an average temperature comfortably hovering around 23°C (73°F), the month offers a delightful contrast to the cooler spring months. The rainfall is minimal, with only a few days registering precipitation, which allows for abundant sunshine and a lively atmosphere. This month sets the perfect backdrop for enjoying the vibrant coastal lifestyle, making it a favorite among visitors. For more insights on weather patterns year-round, explore Portoroz Climate.