Weather in Opatija for December 2025
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So far, December 2025 in Opatija is slightly warmer than the historical average by 1.7 °C.
The forecast for the upcoming days in Opatija predicts a temperature of 10.1 °C, which is slightly above the historical average.
In general, the average temperature in Opatija at the beginning of December is 8.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 9.9 °C by the end of December.
Opatija experiences moderate rainfall in December, with an average of 8 rainy days and a total precipitation of 91 mm.
Is December a good time to visit Opatija? check out the best time to travel to Opatija page.
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Opatija Weather December
Temperatures trend during December in Opatija
December weather in Opatija day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Partly cloudy | 9° /3° | 0 mm | 3 | |
| 2 Dec. |  Sunny | 9° /4° | 2 mm | 3 | |
| 3 Dec. |  Overcast | 9° /2° | 0.3 mm | 2 | |
| 4 Dec. |  Patchy rain possible | 8° /4° | 2.2 mm | 2 | |
| 5 Dec. | Sunny | 7° /1° | 2 mm | 3 | |
| 6 Dec. | Overcast | 7° /2° | 0 mm | 2 | |
| 7 Dec. | Overcast | 10° /3° | 0 mm | 3 | |
| 8 Dec. |  Light drizzle | 9° /3° | 1.4 mm | 3 | |
| 9 Dec. | Light rain | 9° /4° | 2.2 mm | 3 | |
| 10 Dec. |  Light freezing rain | 8° /2° | 0.7 mm | 3 | |
| 11 Dec. | Partly cloudy | 10° /2° | 0 mm | 4 | |
| 12 Dec. | Sunny | 9° /1° | 0 mm | 4 | |
| 13 Dec. | Partly cloudy | 10° /2° | 0.1 mm | 4 | |
| 14 Dec. | Light rain shower | 9° /3° | 5.2 mm | 3 | |
| 15 Dec. | Sunny | 11° /4° | 0 mm | 0.2 | |
| 16 Dec. | Partly cloudy | 11° /4° | 0 mm | 0.1 | |
| 17 Dec. |  Moderate rain | 10° /6° | 7.2 mm | 0 | |
| 18 Dec. | Patchy rain possible | 12° /7° | 1.4 mm | 0.1 | |
| 19 Dec. | Overcast | 11° /6° | 0 mm | 0.1 | |
| 20 Dec. | Sunny | 9° /4° | 0 mm | 3 | |
| 21 Dec. | Sunny | 8° /3° | 0 mm | 3 | |
| 22 Dec. | Patchy rain possible | 9° /4° | 4 mm | 2 | |
| 23 Dec. | Patchy rain possible | 10° /7° | 1.7 mm | 2 | |
| 24 Dec. | Patchy rain possible | 12° /7° | 0.2 mm | 2 | |
| 25 Dec. | Sunny | 10° /4° | 0 mm | 3 | |
| 26 Dec. | Sunny | 10° /2° | 0 mm | 2 | |
| 27 Dec. |  Cloudy | 8° /2° | 0 mm | 1 | |
| 28 Dec. | Partly cloudy | 10° /3° | 0 mm | 3 | |
| 29 Dec. | Sunny | 11° /5° | 0 mm | 4 | |
| 30 Dec. | Sunny | 11° /5° | 0 mm | 4 | |
| 31 Dec. | Sunny | 9° /4° | 0 mm | 3 | |
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Opatija weather in December vs November vs January
| November | December | January | |
|---|---|---|---|
| Weather | Sunny | Sunny |  Moderate or heavy rain shower |
| Temperatures | 12°/6° | 8°/1° | 8°/2° |
| Rainfall | 74 mm | 91 mm | 349 mm |
| Wind | 15.5 km/h | 18.2 km/h | 19.5 km/h |
| Humidity | 74% | 73% | 81% |
| Rainy days | 9 days | 8 days | 21 days |
| Dry days | 21 days | 23 days | 10 days |
Planning a trip to Opatija? Discover the best time to visit
Opatija in December - FAQ
What to pack to Opatija in December?
As you prepare for your trip to Opatija in December, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Opatija, during December, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
December rainfall patterns in Opatija
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Where is Opatija?Get accurate weather forecasts for Opatija, located at latitude 45.337 and longitude 14.308. Stay updated with localized weather information tailored for Opatija.