Triest weather in September (Friuli Venezia Giulia, Italy)

Is September a good time to explore Triest weather-wise? Use this page to get an overview of the month’s weather conditions.

Temperatures

In September, Triest usually has high temperatures and heavy rainfall. In the daytime, temperatures tend to hover near 23°C, cooling down at night to around 15°C.

Precipitation

Triest in September usually receives heavy rainfall, averaging around 169 mm for the month. Expect around 11 days of rain based on historical data.

Average sunshine

There are approximately 211 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

In case you lean more towards enjoying temperate temperatures and rain-free days July typically offers the most optimal weather. In contrast, January, February, November and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Triest climate page with graphs.

 

Triest, monthly averages in September

Min Temperature 15°C  

Max Temperature 23°C  

Water Temperature 22°C  

Chance of Rain 38%  

Precipitation 169 mm  

Rainy days 11 days  

Humidity 67%  

Sunshine 211 hours  

Percentage Sunshine 54%  

Where to go in Italy in September

Find out more about the weather in Italy and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Triest, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes. With a water temperature of around 22°C this is a great month to swim so bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Camping

6/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Triest.

Our site offers climate and forecast data for every country in the world. Are you going to Italy? On this website you can find historical weather averages for many cities in Italy. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.