Click on a day for an hourly weather forecast
The temperatures in Rijeka in August are comfortable with low of 16°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Rijeka during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Rijeka in August 2025.
If you’re planning to visit Rijeka in the near future, we highly recommend that you review the 14 day weather forecast for Rijeka before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / -2° | 10 | 16 | 4 | 195 mm | Awful | Rijeka in January |
| February | 7° / -1° | 10 | 14 | 4 | 220 mm | Awful | Rijeka in February |
| March | 10° / 2° | 8 | 21 | 2 | 172 mm | Awful | Rijeka in March |
| April | 15° / 7° | 8 | 22 | 0 | 143 mm | Ok | Rijeka in April |
| May | 19° / 10° | 12 | 19 | 0 | 217 mm | Ok | Rijeka in May |
| June | 23° / 14° | 11 | 19 | 0 | 188 mm | Good | Rijeka in June |
| July | 26° / 16° | 10 | 21 | 0 | 175 mm | Good | Rijeka in July |
| August | 26° / 16° | 6 | 25 | 0 | 136 mm | Perfect | Rijeka in August |
| September | 21° / 13° | 8 | 22 | 0 | 198 mm | Ok | Rijeka in September |
| October | 16° / 8° | 6 | 25 | 0 | 153 mm | Good | Rijeka in October |
| November | 11° / 5° | 10 | 20 | 0 | 242 mm | Bad | Rijeka in November |
| December | 7° / 0° | 9 | 19 | 2 | 210 mm | Awful | Rijeka in December |