Opatija weather in January 2027

Q: How warm is it in Opatija in January?

Daytime temperatures usually reach 8°C in Opatija in January, falling to 1°C at night.

Q: How sunny is it in Opatija in January?

There are normally 4 hours of bright sunshine each day in Opatija in January - that's 39% of daylight hours.

Q: How warm is the sea around Opatija in January?

The average sea temperature around Opatija in January is 14°C.

Q: Does it rain in Opatija in January?

There are usually 13 days with some rain in Opatija in January and the average monthly rainfall is 95mm.

Expect daytime maximum temperatures of 6°C in Opatija, Croatia in January based on long-term weather averages. There are 4 hours of sunshine per day on average with 14 days with some rainfall and typically 114 mm of rainfall in the month.

6
6°C max day temperature
4
4 hours of sunshine per day
14
14 days with some rainfall
-3
-3°C min night temperature
9
9 hours of daylight per day
0
No heat & humidity
114
114 mm of monthly rainfall
1
1 (Low) UV index
11
11°C sea temperature

More about Opatija

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The January weather guide for Croatia (Opatija) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)