ClimateForecastNovemberDecember >>

Opatija Climate by Month

Opatija knows a soft and mild mediterranean sea climate. Keep in mind that the precipitation is higher than in the rest of Croatia.

Average day and night temperature

The climate in Opatija is known for significant temperature differences throughout the year, making the weather dynamic. Typically, daytime temperatures range from a comfortable 27°C in August to a chilly 7°C in the coolest month, January. Nights are cooler, with temperatures generally dropping to 1°C, particularly during the colder months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Opatija has a notably wet climate with abundant precipitation, recording 1925 mm of rain/snowfall per year. The climate in Opatija shows significant variation throughout the year. Expect heavy rainfall in November, with an average of 250 mm of precipitation over 14 rainy days. In contrast, July offers drier and sunnier days, with around 101 mm of rainfall over 12 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

For those who appreciate different seasons, Opatija serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 9.9 hours of sunshine daily, and embrace the darker days in December, offering only 3.3 hours of daily sunlight.

Monthly hours of sunshine

Data from: Rijeka, Croatia (7 KM, 4 Miles).

Daily hours of sunshine

Data from: Rijeka, Croatia (7 KM, 4 Miles).

Average water temperature

The mean water temperature over the year in Opatija ranges from 11°C in January to 25°C in August.

Water temperature over the year

Data from: Rijeka, Croatia (7 KM, 4 Miles).

The best time of year to visit Opatija in Croatia

During the months of June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is the rainy season in Opatija?
    Rainy season in Opatija occurs in the months of February, September, October, November and December.
  • Which is the warmest month in Opatija?
    August has an average maximum temperature of 27°C and is the warmest month of the year.
  • Which is the coldest month in Opatija?
    The coldest month is January with an average maximum temperature of 7°C.
  • Which is the wettest month in Opatija?
    November tops the wettest month list with 250 mm of rainfall.
  • Which is the driest month in Opatija?
    July is the driest month with 101 mm of precipitation.
  • Which is the sunniest month in Opatija?
    July is the sunniest month with an average of 298 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Opatija

    Thu   Nov 21
    12°C | 4°C
    S 22 km/h
    23 mm
    broken clouds and slight rain

    broken clouds and slight rain

    Fri   Nov 22
    13°C | 1°C
    E 14 km/h
    13 mm
    partly cloudy and rain

    partly cloudy and rain

    Sat   Nov 23
    9°C | 1°C
    N 7 km/h
    almost clear and no rain

    almost clear and no rain