Measurements:
°C
°F
CURRENT WEATHER
04:57
Trieste
56°F
W 11 mph
Feels like: 54°F
Precip: 13%
World Resorts Italy Trieste Weather

7 Day Weather Forecast

09.12
sat
DAY
72°F
SW 12 mph
precip
2%
NIGHT
64°F
SW 7 mph
precip
4%
09.13
sun
DAY
76°F
E 2 mph
precip
3%
NIGHT
66°F
W 6 mph
precip
19%
09.14
mon
DAY
74°F
SW 6 mph
precip
5%
NIGHT
66°F
W 8 mph
precip
17%
09.15
tue
DAY
78°F
NW 1 mph
precip
2%
NIGHT
66°F
W 6 mph
precip
8%
09.16
wed
DAY
76°F
E 4 mph
precip
2%
NIGHT
66°F
W 6 mph
precip
7%
09.17
thu
DAY
76°F
NW 1 mph
precip
6%
NIGHT
66°F
N 3 mph
precip
81%
09.18
fri
DAY
60°F
E 11 mph
precip
83%
NIGHT
60°F
W 7 mph
precip
53%

Trieste Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Trieste was 24.0°F. The maximum and minimum values were 22.7°F and 25.5°F respectively.

Trieste on the Weather Map

Best Time to Visit Trieste
The most sunny months:
August 22 days
July 21 days
June 19 days
The most warm months:
August 88.2 °F
July 87.7 °F
June 82.3 °F
Warmest sea temperature:
August 81.7 °F
July 81.3 °F
September 76.4 °F
The most cold months:
January 44.1 °F
December 46.9 °F
February 47.5 °F
The most rainy months:
May 7 days
November 6 days
September 6 days
The most windy months:
February 6 mph
March 6 mph
November 6 mph
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