June weather forecast
Portorož, Slovenia

June is the harbinger of summer in Portorož, boasting about the year’s highest sea temperatures, reaching 22.8°C (73°F), inviting beach enthusiasts into the water. The pleasant weather conditions continue throughout the month despite the variables of rain and humidity. With the longest daylight hours, June is the ideal month for sun-seekers and outdoor activities.

Temperature

June witnesses a subtle temperature ascent, adjusting from a pleasant 21.8°C (71.2°F) in May to a moderately hot 25.5°C (77.9°F). Throughout June, an average low-temperature of 14.5°C (58.1°F) is experienced.

Humidity

In June, the average relative humidity is 54%.

Rainfall

In Portorož, during June, the rain falls for 10.9 days and regularly aggregates up to 86mm (3.39") of precipitation. In Portorož, Slovenia, during the entire year, the rain falls for 113.1 days and collects up to 931mm (36.65") of precipitation.

Sea temperature

In Portorož, in June, the average water temperature is 22.8°C (73°F).
Note: When considering a person's aversion to cold, factors like sunshine, wind, and atmospheric temperature are key. Swimming in 22.8°C (73°F) might be delightful. (Remember: The Olympics' swimming events have water temperatures between 25°C (77°F) and 28°C (82.4°F).)

Daylight

June has the longest days of the year, with an average of 15h and 36min of daylight.
On the first day of the month, sunrise is at 05:19 and sunset at 20:47. On the last day of June, in Portorož, sunrise is at 05:20 and sunset at 20:58 CEST.

Sunshine

In Portorož, the average sunshine in June is 9.1h.

UV index

June and July, with an average maximum UV index of 8, are months with the highest UV index. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In June, the maximum UV index of 8 transforms into these recommendations:
Swift harm can befall unprotected skin and eyes. Prioritize safety. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.