Expect the average daily weather in Rijeka during December is 3 with usual highs being around 6 degrees and a low of -2 degrees celsius. We have put some more info below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 3 |
| High Temperature | 6 |
| Low Temperature | -2 |
Useful Links: Rijeka Weather: Average Weather & Yearly Climate