Measurements:
°C
°F
Isola
46°F
SW 7 mph
Feels like: 44°F
Precip: 0%
World Resorts Slovenia Isola Weather May Weather in Isola

Isola Weather: May

Average Day Temperature: 71.8°F
Average Night Temperature: 54.6°F
Sea Water Temperature: 65.7°F
Number of Sunny Days: 14 days
Sunshine Hours: 14.3 - 15.4 hours
Number of Rainy Days: 7 days
Precipitation Totals: 3.8 in

Air Temperature in May, °F

Select Year: 2025 2024 2023

The highest day temperature in May 2025 was 78°F. The lowest night temperature was 52°F. The average values for day and night temperatures during May were 67.7°F и 58.6°F respectivly.

Isola Water Sea Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Isola was 66.8°F. The maximum and minimum values were 62.0°F and 70.6°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in May are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Isola is 3.8 in. It makes may one of the most rainy months of the year.

Wind Speed in May, mph

The average wind speed in May is 5.8 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Isola in May is 9.2 hours.

Best Time to Visit Isola
The most sunny months:
August 23 days
July 22 days
June 20 days
The most warm months:
August 88.8 °F
July 88.6 °F
June 83.4 °F
Warmest sea temperature:
August 81.6 °F
July 81.3 °F
September 76.6 °F
The most cold months:
January 45.1 °F
December 47.5 °F
February 47.8 °F
The most rainy months:
May 7 days
November 6 days
September 6 days
The most windy months:
March 6 mph
February 6 mph
November 6 mph

Isola on the Weather Map

24 Hours Weather Forecast
Isola
Local time: 05:13
06 dec, saturday
0600 46°F
SW
7 mph
0900 48°F
SW
7 mph
1200 52°F
SW
7 mph
1500 52°F
SW
6 mph
1800 46°F
SW
6 mph
2100 46°F
SW
6 mph
07 dec, sunday
0000 46°F
W
7 mph
0300 48°F
SW
9 mph