Trieste weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Excellent
Best time to visit: May – September
What is the weather like in Trieste in August?
In August, Trieste is hot: daytime highs average 27 °C, and nights cool down to about 20 °C. The sea averages 25.5 °C – pleasant for swimming. With around 9 hours of sunshine a day, there is plenty of sun. Rain falls on about 9 days, adding up to 90 mm. On about 6 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is an excellent month for a holiday in Trieste.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 91 | 90 | 81 |
| Day | 27° | 27° | 22° |
| Night | 20° | 20° | 16° |
| Sea | 25° | 26° | 23° |
| Sun | 10 h | 9 h | 7 h |
| Rain days | 8 | 9 | 10 |
More details for August
- Daylight
- 14 h 11 min06:04 – 20:15
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 16 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 39 %on averageAll months
- Hot days
- 6 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Rome
How the score comes together
- Temperatureweight 50 %99 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 30 %67 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Trieste in August: quick answers
Is Trieste hot in August?
Yes. In August, Trieste is hot: daytime highs average 27 °C and nights stay around 20 °C. On about 6 days the thermometer climbs to 30 °C or more.
Can you swim in Trieste in August?
Yes. In August the sea averages 25.5 °C – pleasant for swimming.
Does it rain much in Trieste in August?
Rain falls on about 9 days, adding up to 90 mm.
Trieste month by month
The whole year in TriesteAll destinations: ItalyWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences