Weather in Trieste in August

A good month. August works. It is not the peak, but nothing about it fights you. Highs average 28.7 °C, lows 20.7 °C, and rain falls on 11 days — nothing in the month is working against you.

August ranks 7 of 12 in Trieste: past the worst of the year but short of June, which is the month to book if the dates are open.

Rain on 11 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 28.7 °C days and 20.7 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 10 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest August day reached 36.2 °C and the coldest night fell to 13.1 °C, and the wettest single day dropped 36 mm — roughly 46% of the month's rain in one day.

August is moderately variable: 13 mm in the driest year against 159 mm in the wettest, around an average of 79 mm. Roughly two Augusts in three land near that average, and the third does something else entirely.

Wind is light at 6.5 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 66%.

How August sits in the year

Temperatures hold steady either side: 28.5 °C in July, 28.7 here, 24 in September. Nothing about the timing within the month matters much.

Daylight in August

14.2 hours of daylight, losing 1.4 hours across the month. That is between Trieste's extremes of 15.7 and 8.7 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 25.7 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

August in Trieste versus nearby

If Trieste is one option among several, the nearby comparison is worth making. Villach is close enough to be a coin toss — 3.3 °C cooler, 5 days more rain. Padua is the weaker option in August — 2.2 °C warmer, 1 day more rain.

So: August works, with June the better month by 7 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Trieste

See all twelve months in Trieste, or where else to go in August.