Temperature
Cold by day, cold at night.
50°Ftypical December high
Typical range
December climate
December in Opatija
Croatia · Primorje-Gorski Kotar
Cold days and some sun.
Some tradeoffs
Daytime high
50°F
Lows around 42°F
Rain
Several rainy days
Sun
5.5 h/day
Air feel
Very dry
Sea temp
59°F
Too cold for swimming
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days. About 12 wet days this month.
39%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
5.4 hDecember sunshine
Heat & humidity by month
Humidity is rarely noticeable in the cool air.
Very dryDecember Heat feel
Easy airWarm airHot airHumid airVery humid air
Hourly temperature pattern
In December, afternoons feel about 43° and nights feel near 37°.
Very coldColdCoolComfortableWarmNight hours
Clear sky
Mostly cloudy skies this month.
38%December Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in December.
7 mphDecember Light breeze
Sea temperature
59°FDecember sea temp
More detailIncludes daypart comfort
Typical December day
December late afternoons are around 48°F, easing to about 46°F in early evening.
Avg temp Typical range
Morning45°F
Rain27%
Cloud63%
Humid airLow
Sun intensityMinimal
Midday49°F
Rain29%
Cloud61%
Humid airLow
Sun intensityLow
Late afternoon48°F
Rain27%
Cloud60%
Humid airLow
Sun intensityMinimal
Best windowEarly evening46°F
Rain26%
Cloud60%
Humid airLow
Sun intensityMinimal
Data tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 48 | 40 | 6.0 | 12 | 5.8 | 79 | 55 |
| Feb | 50 | 40 | 5.7 | 11 | 7.3 | 76 | 53 |
| Mar | 55 | 45 | 5.7 | 12 | 9.1 | 74 | 53 |
| Apr | 62 | 51 | 5.2 | 12 | 10.5 | 74 | 57 |
| May | 70 | 59 | 5.5 | 13 | 11.9 | 75 | 65 |
| Jun | 78 | 67 | 3.9 | 10 | 13.0 | 73 | 73 |
| Jul | 82 | 70 | 4.0 | 11 | 13.3 | 72 | 77 |
| Aug | 82 | 70 | 4.5 | 10 | 12.4 | 73 | 78 |
| Sep | 73 | 63 | 8.8 | 12 | 10.0 | 77 | 74 |
| Oct | 65 | 56 | 9.7 | 14 | 8.1 | 81 | 68 |
| Nov | 57 | 49 | 10.7 | 15 | 6.1 | 81 | 64 |
| Dec | 50 | 42 | 7.3 | 12 | 5.4 | 80 | 59 |
Similar climates
Similar
Similar travel styleAlgheroItalySimilar travel styleArcachonFranceSimilar travel styleBarMontenegroSimilar travel styleBiarritzFrance
Want a side-by-side climate view? Compare Opatija with Alghero.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 26, 2026
Data & methodology