Opatija Weather in June
Opatija in June sees high temperatures, with highs around 24°C (75°F) and overnight lows of 16°C (61°F). Rainfall is fairly high at around 123 mm (4.8 in) on average, so pack waterproofs just in case.
Rainfall in Opatija in June
Based on our climate data of the past 30 years, about 16 days of rain are anticipated, with 123 mm (4.8 in) on average. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Opatija in June
Daytime temperatures in Opatija reach 24°C (75°F) in June, dropping to 16°C (61°F) at night. June is a notable month of the summer season. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 16°C (61°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Opatija in June
The city usually sees around 251 hours of sunlight, indicating many sunny days — a great month for sightseeing.
Average water temperature in June
The water is 23°C (73°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.If your ideal day consists of dry skies and pleasant temperatures, May, June, July and August typically offer the best circumstances for Opatija.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Croatia, check out our Opatija's climate page.
Opatija Temperature in June
Min Temperature
16°C (61°F)
Max Temperature
24°C (75°F)
Water Temperature
23°C (73°F) *
Chance of Rain
52%
Precipitation
123 mm (4.8 in)
Rainy days
16 days
Humidity
62% *
Sunshine
251 hours *
Percentage Sunshine
61% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Opatija typically rise from around 24°C (75°F) at the start of June to approximately 28°C (82°F) by the end. Nights are pleasant, with lows typically ranging from 14°C (57°F) to 18°C (64°F).
Average temperatures in June
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 June
Historical weather for Opatija in June
Browse day-by-day weather records for Opatija spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Opatija historical weather extremes in June
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Opatija.
- Opatija recorded its highest June temperature of 37°C (99°F) on June 29, 2026.
- The coldest June day was on June 6, 1986, with a maximum of 14°C (57°F).
- The lowest overnight temperature recorded in June was 7°C (45°F) (June 3, 2001).
Best Places in Croatia in June
Find out more about the weather in Croatia and which places have the best travel conditions in this month. See all of Croatia in June →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Opatija in June
Comfortable temperatures call for an easy wardrobe in June. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 23°C (73°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Opatija in June
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Croatia, check out our Opatija's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Opatija climate overview or explore weather in Croatia.
