Click on a day for an hourly weather forecast
The weather in Trieste in August is hot. The average temperatures are between 20°C and 28°C.
You can expect about 3 to 8 days of rain in Trieste 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 Trieste in August 2025.
If you’re planning to visit Trieste in the near future, we highly recommend that you review the 14 day weather forecast for Trieste before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 0° | 8 | 22 | 2 | 154 mm | Awful | Trieste in January |
| February | 9° / 1° | 8 | 18 | 2 | 204 mm | Awful | Trieste in February |
| March | 12° / 3° | 8 | 22 | 1 | 161 mm | Bad | Trieste in March |
| April | 17° / 8° | 7 | 23 | 0 | 143 mm | Ok | Trieste in April |
| May | 21° / 11° | 11 | 20 | 0 | 219 mm | Ok | Trieste in May |
| June | 25° / 16° | 10 | 20 | 0 | 206 mm | Good | Trieste in June |
| July | 28° / 19° | 8 | 23 | 0 | 166 mm | Good | Trieste in July |
| August | 28° / 20° | 7 | 24 | 0 | 148 mm | Good | Trieste in August |
| September | 24° / 15° | 9 | 21 | 0 | 240 mm | Good | Trieste in September |
| October | 18° / 10° | 7 | 24 | 0 | 198 mm | Ok | Trieste in October |
| November | 13° / 6° | 10 | 20 | 0 | 272 mm | Bad | Trieste in November |
| December | 9° / 2° | 8 | 22 | 1 | 224 mm | Bad | Trieste in December |