Climate and monthly weather forecastOpatija, Croatia
Climate and monthly weather forecast
The climate of Opatija
Nestled in Croatia, Opatija boasts a Marine west coast climate, described warm summers. This climate type aligns with the Köppen climate classification 'Cfb,' which is often associated with a comfortable, temperate environment. Throughout the year, noticeable changes occur across multiple weather parameters, painting a picture of the city's weather from January to December.The temperature highs throughout the year range from 8.5°C (47.3°F) to 26.9°C (80.4°F) while the lows vary between 5.6°C (42.1°F) and 22.4°C (72.3°F). January sees the lowest temperatures, and August records the highest. The city experiences a relative humidity from 66% to 76%, peaking in November and hitting the lowest in July. Opatija receives rainfall throughout the year, with amounts ranging from 35mm (1.38") in January to 89mm (3.5") in November. Notably, Opatija experiences a minimal snowfall, with only three months in a year recording a snowfall of 1mm (0.04").
The best time to visit Opatija
Factoring in temperature, rainfall, and daylight hours, the best time to plan a visit to Opatija would be from May to September. During this period, the high temperatures range from 19°C (66.2°F) to 26.9°C (80.4°F), which is pleasantly warm for outdoor activities. Rainfall is relatively minimal, with amounts varying between 59mm (2.32") and 73mm (2.87"), and the city enjoys long daylight hours, from 14.9 to 15.6 hours.The worst time to visit Opatija
The less appealing period for tourists is likely to be from November to January. The city has its lowest temperatures during these months, with highs from 8.5°C (47.3°F) to 13.7°C (56.7°F) and lows between 5.6°C (42.1°F) and 11.1°C (52°F). Additionally, November records the highest rainfall of 89mm (3.5"). Although daylight hours range from 8.8 to 9.5 hours in these winter months, the limited sunshine - from 5.3 to 5.5 hours daily - could be off-putting.Spring weather in Opatija
Between March and May, spring shows up in Opatija with average high temperatures climbing from 11.8°C (53.2°F) to 19°C (66.2°F). The lows increase significantly as well, ranging from 8.4°C (47.1°F) to 15°C (59°F). This period also sees a rise in the amount of rainfall, from 39mm (1.54") in March to 67mm (2.64") in May, and a growth in daylight hours from 11.9 to 14.9 hours.Summer weather in Opatija
Summer in Opatija, from June to August, comes with high temperatures spanning from 23.8°C (74.8°F) to 26.9°C (80.4°F). The lows range from 19.4°C (66.9°F) to 22.4°C (72.3°F), providing warm nights. The city receives a rainfall from 57mm (2.24") in August to 73mm (2.87") in June, coupled with long daylight hours from 14.1 to 15.6 hours. Notably, this season records the least cloud coverage, with percentages from 16% to 22%.Autumn weather in Opatija
From September to November, autumn descends on Opatija with temperatures falling from highs of 22.5°C (72.5°F) to 13.7°C (56.7°F) and lows ranging between 18.9°C (66°F) and 11.1°C (52°F). Rainfall significantly rises from 60mm (2.36") to 89mm (3.5"), making November the wettest month. The city experiences declining daylight hours, from 12.5 to 9.5 hours.Winter weather in Opatija
December through February in Opatija marks winter with the average high temperatures dwindling between 10°C (50°F) to 9°C (48.2°F), and the average lows decreasing from 7.2°C (45°F) to 5.6°C (42.1°F). The city receives a consistent rainfall from 59mm (2.32") in February to 35mm (1.38") in December. Daylight hours are also at their shortest in this season, ranging between 8.8 to 10.4 hours.Weather in January
The weather in Opatija begins the year with a blend of cool temperatures and high humidity. Rainfall is relatively steady and less intense compared to what will be seen in the coming months. The maritime climate maintains the sea temperature at a fairly consistent level, providing a buffering effect on the local weather. Weather in January »Weather in February
In February, Opatija weather takes on a slightly milder shade compared to the previous month, with similar humidity levels. The wind speed ticks up a notch compared to January, often stirring the sea and affecting the local climate. Weather in February »Weather in March
Come March, Opatija starts experiencing early signs of spring, with the weather conditions becoming more amenable. More sunshine hours and a higher UV index indicate clearer weather, though the days can still be quite chilly. The reduced percentage of cloud cover allows for more visibility and better outdoor conditions. Weather in March »Weather in April
April in Opatija sees a more notable shift into spring weather. The sea temperature becomes warmer and along with it, the weather grows milder. The increasingly pleasant afternoons, however, can still be followed by quite cool nights. Weather in April »Weather in May
May stands out as one of the warmer months, a precursor to the summer season in Opatija. Lengthier daylight and sunny days become more frequent, enhancing the appeal of outdoor activities. A combination of higher temperatures and less humidity reduces the nippiness experienced in previous months. Weather in May »Weather in June
June ushers in the summer season in Opatija and brings with it, a noticeable change in weather patterns. Longer days and shorter nights dominate the month. The shift in humidity, reduced cloud cover, and warmer temperatures mark the onset of peak tourist season. Weather in June »Weather in July
July in Opatija is characterized by truly summer-like conditions. Visitors during this time can expect warm and relatively dry weather, ideal for enjoying the picturesque surroundings. The sea temperature peaks, providing the perfect conditions for indulging in water sports and swimming. Weather in July »Weather in August
The weather in August continues the full swing of summer in Opatija. The humidity dips a bit, offering some respite from the high temperatures. However, the sea temperature sustains its high range, ensuring an excellent beach experience. Weather in August »Weather in September
September in Opatija signifies the onset of the transition from summer to autumn. Warm days continue, yet the encroaching longer nights begin to see a gradual dip in temperature. After the high of summer, there's a noticeable increase in rainfall, signifying the period of rainfall peak. Weather in September »Weather in October
October brings a more distinctive autumn feel to the weather in Opatija. The transition from the warmth of September towards the cooler November becomes evident. The sea temperature continues its downward trend, directly impacting the local weather. Weather in October »Weather in November
November is characterized by a substantial shift towards cooler, winter-like weather in Opatija. Rainfall tends to be heavier and more frequent, while the sea temperature continues to fall. The declining daylight hours and the gain in relative humidity contribute to the sense of change in the season. Weather in November »Weather in December
December in Opatija ushers in a distinct winter chill, rounding off the year with some of the coolest conditions. The shortened daylight hours, increased cloud cover, and cooler sea temperature collectively contribute to the classic signs of winter arrival. Weather in December »Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January stands out as Opatija's coldest month, with temperatures ranging between an average high of 8.5°C (47.3°F) and a low of 5.6°C (42.1°F).
January is the month with the least rainfall in Opatija. Rain falls for 11.4 days and accumulates 35mm (1.38") of precipitation.
Throughout the year, there are 157.3 rainfall days, and 720mm (28.35") of precipitation is accumulated.
In Opatija, snow does not fall in January, April through November.
In Opatija, during the entire year, snow falls for 1.1 days and aggregates up to 3mm (0.12") of snow.
January and December, with an average of 5.3h of sunshine, are months with the least sunshine in Opatija.
The month with the lowest UV index is January, with an average maximum UV index of 2.
Months with snowfall are February, March and December.
The months with the most snowfall are February, March and December, with an average 1mm (0.04") of accumulated snow.
The month with the coldest seawater in Opatija, Croatia, is February, with an average sea temperature of 10.7°C (51.3°F).
The month with the longest days is June, with an average of 15h and 36min of daylight.
The months with the most sunshine are July and August, with an average of 11.7h of sunshine.
July is the month with the highest UV index in Opatija, Croatia, with an average maximum UV index of 7.
In Opatija, August is known for its average highest temperatures, reaching a high of 26.9°C (80.4°F) and a low of 22.4°C (72.3°F).
The least humid month in Opatija, Croatia, is August, with an average relative humidity of 66%.
The month with the warmest seawater is August, with an average sea temperature of 24.9°C (76.8°F).
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
The most humid month is November, with an average relative humidity of 76%.
November is the month with the most rainfall in Opatija. Rain falls for 15.1 days and accumulates 89mm (3.5") of precipitation.
With an average of 8h and 48min of daylight, December has the shortest days of the year in Opatija.
Average temperature
Opatija, Croatia
The warmest month (with the highest average high temperature) is August (26.9°C).
The month with the lowest average high temperature is January (8.5°C).
The month with the highest average low temperature is August (22.4°C).
The coldest month (with the lowest average low temperature) is January (5.6°C).
Average pressure
Opatija, Croatia
- Average pressure in January:
1017.6mbar - Average pressure in February:
1015.9mbar - Average pressure in March:
1015.7mbar - Average pressure in April:
1014.8mbar - Average pressure in May:
1014.4mbar - Average pressure in June:
1014.4mbar
- Average pressure in July:
1014.3mbar - Average pressure in August:
1015.3mbar - Average pressure in September:
1016.6mbar - Average pressure in October:
1017.9mbar - Average pressure in November:
1015.7mbar - Average pressure in December:
1019.5mbar
The month with the highest atmospheric pressure is December (1019.5mbar).
The month with the lowest atmospheric pressure is July (1014.3mbar).
Average wind speed
Opatija, Croatia
- Average wind speed in January:
13.9km/h - Average wind speed in February:
16.7km/h - Average wind speed in March:
15.6km/h - Average wind speed in April:
13.2km/h - Average wind speed in May:
12.4km/h - Average wind speed in June:
11.7km/h
- Average wind speed in July:
10.9km/h - Average wind speed in August:
11km/h - Average wind speed in September:
13.3km/h - Average wind speed in October:
13.7km/h - Average wind speed in November:
15.4km/h - Average wind speed in December:
13.3km/h
The windiest month (with the highest average wind speed) is February (16.7km/h).
The calmest month (with the lowest average wind speed) is July (10.9km/h).
Average humidity
Opatija, Croatia
The month with the highest relative humidity is November (76%).
The month with the lowest relative humidity is August (66%).
Average rainfall
Opatija, Croatia
The wettest month (with the highest rainfall) is November (89mm).
The driest month (with the least rainfall) is January (35mm).
Average rainfall days
Opatija, Croatia
- Average rainfall days in January:
11.4 days - Average rainfall days in February:
11.8 days - Average rainfall days in March:
11.4 days - Average rainfall days in April:
13.2 days - Average rainfall days in May:
17 days - Average rainfall days in June:
14.5 days
- Average rainfall days in July:
13.7 days - Average rainfall days in August:
11.1 days - Average rainfall days in September:
12.8 days - Average rainfall days in October:
13.1 days - Average rainfall days in November:
15.1 days - Average rainfall days in December:
12.2 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is August (11.1 days).
Average snowfall
Opatija, Croatia
The months with the highest snowfall are February, March and December (1mm).
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0mm).
Average snowfall days
Opatija, Croatia
- Average snowfall days in January:
0.1 days - Average snowfall days in February:
0.5 days - Average snowfall days in March:
0.2 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.3 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature
Opatija, Croatia
The best month for swimming (with the highest average sea temperature) is August (24.9°C).
The coldest month (with the lowest average sea temperature) is February (10.7°C).
Average daylight / Average sunshine
Opatija, Croatia
- Average daylight in January:
9h and 12min - Average daylight in February:
10h and 24min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 36min
- Average daylight in July:
15h and 18min - Average daylight in August:
14h and 6min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 30min - Average daylight in December:
8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January:
5h and 18min - Average sunshine in February:
5h and 24min - Average sunshine in March:
7h and 42min - Average sunshine in April:
10h and 12min - Average sunshine in May:
10h and 30min - Average sunshine in June:
11h and 24min
- Average sunshine in July:
11h and 42min - Average sunshine in August:
11h and 42min - Average sunshine in September:
10h and 24min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 30min - Average sunshine in December:
5h and 18min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 18min).
Average sunshine days
Opatija, Croatia
- Average sunshine days in January:
17.3 days - Average sunshine days in February:
15.4 days - Average sunshine days in March:
17.5 days - Average sunshine days in April:
15.3 days - Average sunshine days in May:
9.9 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
17.4 days - Average sunshine days in September:
14.9 days - Average sunshine days in October:
16 days - Average sunshine days in November:
12.7 days - Average sunshine days in December:
16.1 days
The month with the most sunshine days is March (17.5 days).
The month with the least sunshine days is May (9.9 days).
Average UV index
Opatija, Croatia
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover
Opatija, Croatia
The months with the most cloud cover are January and February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility
Opatija, Croatia
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
