Izola
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Izola Weather in May

Izola in May sees pleasant temperatures, with highs around 21°C (70°F) and overnight lows of 15°C (59°F). Rainfall is fairly high at around 102 mm (4 in) on average, so pack waterproofs just in case.

Rainfall in Izola in May

Based on our climate data of the past 30 years, about 14 days of rain are anticipated, with 102 mm (4 in) on average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Izola in May

May in Izola sees highs of 21°C (70°F) and lows of 15°C (59°F) overnight. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights cool down to 15°C (59°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Izola in May

The city usually sees around 256 hours of sunlight, indicating many sunny days , a great month for sightseeing.

If you prefer dry days with pleasant temperatures, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

Izola Temperature in May

Min Temperature
15°C (59°F)
Max Temperature
21°C (70°F)
Chance of Rain
47%
Precipitation
102 mm (4 in)
Rainy days
14 days
Humidity
54% *
Sunshine
256 hours *
Percentage Sunshine
*
* Data from: Portorož, Slovenia (6 KM, 3 Miles).

Izola Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Izola - and find the best time to visit.

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Izola typically rise from around 21°C (70°F) at the start of May to approximately 24°C (75°F) by the end. Nights are cool, with lows typically ranging from 11°C (52°F) to 14°C (57°F).

Average temperatures in May

Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in May

Historical weather records for Izola in May

Browse day-by-day weather records for Izola spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Izola historical weather extremes in May

According to our 50 years of weather records for Izola, the following extremes were recorded between 1976 and 2026.

  • Izola recorded its highest May temperature of 32°C (90°F) on May 29, 2008.
  • The coldest May day was on May 13, 1978, with a maximum of 9°C (48°F).
  • The lowest overnight temperature recorded in May was 3°C (37°F) (May 1, 1976).

Best Places in Slovenia in May

Find out more about the weather in Slovenia and which places have the best travel conditions in this month. See all of Slovenia in May →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Izola in May

Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Izola in May

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Cycling
    9/10
  • Walking
    9/10
  • Camping
    6/10
  • Outdoor sports
    9/10

Izola 3-Day Forecast

More climate data for Izola

Popular in May

Where to go in May - average daytime high across popular destinations.

Bucket list

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