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Town in Primorje-Gorski Kotar, Croatia

Opatija weather by month and the best time to visit

Updated October 2026Sources
May–Jun, Sep–OctBest time to visit

When to go to Opatija

May–June and September–October are mild and good for walking. July–August is hot and busy; winters are cool, rainy and quiet, with fewer seaside businesses open.

Opatija weather by month

Average daily high, rainfall and conditions.

PleasantHotRainyCool or coldBest months
0°5°10°15°20°25°30°JFMAMJJASOND
Average highAverage lowRainfall

Monthly averages

MonthHighLowRainHumidityConditions
January6°C43°F0°C32°F81 mm92%Cold
February8°C46°F1°C33°F96 mm89%Cold
March12°C54°F4°C38°F83 mm84%Cool
April18°C64°F8°C46°F85 mm79%Cool
May22°C72°F12°C54°F105 mm77%Pleasant
June26°C79°F16°C61°F88 mm77%Pleasant
July28°C83°F18°C65°F71 mm74%Pleasant
August28°C83°F18°C64°F89 mm74%Pleasant
September23°C73°F13°C56°F131 mm79%Pleasant
October18°C65°F10°C49°F122 mm86%Pleasant
November13°C55°F6°C43°F139 mm90%Cool
December8°C46°F1°C34°F108 mm92%Cold

Best months across Croatia

PlaceBest monthsWarmest month
SplitMay–Jun, Sep–OctAug (30°C)
DubrovnikMay–Jun, Sep–OctAug (29°C)
ZagrebApr–Jun, Sep–OctJul (29°C)
HvarMay–Jun, SepAug (27°C)
ZadarMay–Jun, Sep–OctAug (28°C)
PulaMay–Jun, Sep–OctAug (28°C)
RovinjMay–Jun, Sep–OctAug (28°C)
MakarskaMay–Jun, SepAug (33°C)
KorčulaMay–Jun, SepAug (29°C)
BračMay–Jun, SepAug (30°C)
ŠibenikMay–Jun, Sep–OctAug (26°C)
KrkMay–Jun, SepAug (28°C)
PorečMay–Jun, SepAug (28°C)
TrogirMay–Jun, Sep–OctAug (30°C)
VisMay–Jun, SepAug (27°C)
RijekaMay–Jun, SepJul (28°C)
OpatijaMay–Jun, Sep–OctJul (28°C)

Quick answers

What is the best month to visit Opatija?

May–Jun, Sep–Oct. May–June and September–October are mild and good for walking. July–August is hot and busy; winters are cool, rainy and quiet, with fewer seaside businesses open.

When is the rainy season in Opatija?

Rain peaks in November with about 139 mm. No month averages 150 mm or more.

What is the hottest month in Opatija?

July, with average highs of 28°C (83°F).

How cold does Opatija get?

The coolest nights are in January, averaging 0°C (32°F).

More about Opatija

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Sources

Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 4.1°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.