Trieste weather live forecast

Today's maximum temperature in Trieste is expected to be 30°C. Select a day from the live weather forecast for Trieste, Italy for more weather parameters.

Tuesday
8th Sep
30

25

12

6
Wednesday
9th Sep
27

24

2

5
Thursday
10th Sep
24

21

0

4
Friday
11th Sep
22

21

2

4
Saturday
12th Sep
23

21

4

5

5-day weather forecast updated at 04:00 on Tuesday 8th September 2026 GMT

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The 5-day weather forecast for Italy (Trieste) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Trieste weather forecast by day

Below are the detailed weather forecasts for Trieste for the next 5 days.

Trieste weather for Tuesday 8th September 2026

Expect scattered clouds in Trieste, Italy with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the east.

30
°C maximum temperature
25
°C minimum temperature
scattered clouds
12
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
7
kph wind from E

Trieste weather for Wednesday 9th September 2026

Expect isolated thunderstorms in Trieste, Italy with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 69% chance of some rain and a light breeze of 8 kph from the east.

27
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
5
UV index (Moderate)
69
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
8
kph wind from E

Trieste weather for Thursday 10th September 2026

Expect isolated thunderstorms in Trieste, Italy with a maximum temperature of 24°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 30-40 mm of rainfall expected with 81% chance of some rain and a gentle breeze of 17 kph from the east.

24
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
4
UV index (Moderate)
81
% chance of some rain
<40
mm of rainfall expected
0
no heat & humidity
17
kph wind from E

Trieste weather for Friday 11th September 2026

Expect isolated thunderstorms in Trieste, Italy with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 20-30 mm of rainfall expected with 77% chance of some rain and a gentle breeze of 16 kph from the east.

22
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
4
UV index (Moderate)
77
% chance of some rain
<30
mm of rainfall expected
0
no heat & humidity
16
kph wind from E

Trieste weather for Saturday 12th September 2026

Expect isolated thunderstorms in Trieste, Italy with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 41% chance of some rain and a gentle breeze of 14 kph from the north-east.