Monthly climate guide
Rijeka weather in December
With highs near 5°C (41°F) and lows around -2°C (29°F), December feels cold in Rijeka. Rainfall averages about 101 mm (wet) and the sky is often cloudy. Daytime highs are 4°C cooler than November and 2°C warmer than January.
What stands out in December
- December brings early winter to Rijeka.
- Rijeka is usually about 6°C cooler than Krk, 30 km away, in December.
- Nights often drop below freezing (average low -2°C), so expect frost and icy mornings.
- December is among Rijeka's three coolest months.
Avg high
5°C
41°F
Avg low
-2°C
29°F
Rainfall
101 mm
wet
Humidity
92%
relative
Sky
70%
cloud · often cloudy
Rijeka weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 3°C / 38°F | -3°C / 27°F | 80 mm | 91% | 74% |
| February | 4°C / 39°F | -3°C / 26°F | 112 mm | 90% | 75% |
| March | 9°C / 49°F | 0°C / 32°F | 81 mm | 84% | 63% |
| April | 15°C / 58°F | 4°C / 39°F | 76 mm | 78% | 64% |
| May | 18°C / 64°F | 8°C / 46°F | 122 mm | 78% | 66% |
| June | 22°C / 72°F | 12°C / 54°F | 92 mm | 76% | 56% |
| July | 24°C / 76°F | 14°C / 58°F | 77 mm | 74% | 49% |
| August | 25°C / 77°F | 14°C / 57°F | 80 mm | 73% | 43% |
| September | 20°C / 68°F | 10°C / 50°F | 138 mm | 79% | 58% |
| October | 15°C / 59°F | 6°C / 43°F | 140 mm | 85% | 65% |
| November | 9°C / 49°F | 3°C / 37°F | 155 mm | 91% | 75% |
| December | 5°C / 41°F | -2°C / 29°F | 101 mm | 92% | 70% |
What to pack for December
- A proper insulated winter coat
- A hat, scarf and gloves
- Thermal base layers and warm, grippy boots for icy mornings
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is December a good time to visit Rijeka?
Compare the months in the chart above to find your ideal window.
Best time to visit Rijeka →Other Croatia cities in December
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Rijeka weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/croatia/rijeka/december
<a href="https://weathercompare.eu/weather/croatia/rijeka/december">Rijeka weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/croatia/rijeka" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Rijeka weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/croatia/rijeka/december">Rijeka weather in December</a> – WeatherCompare</p>
Rijeka in December: quick answers
Is December a good time to visit Rijeka?
December is cool in Rijeka, with highs around 5°C. Better for museums and city walks than the beach, and usually quieter.
How warm is Rijeka in December?
Average highs are about 5°C (41°F) and average lows about -2°C (29°F), based on 10 years of daily data.
Does it rain a lot in Rijeka in December?
Rijeka typically gets around 101 mm of rain in December — wet.
Figures are long-term averages for the area around Rijeka (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.