30.08
sun
sun
Day
82°F
W 4 mph
Precip.
2%
2%
Night
72°F
W 6 mph
Precip.
4%
4%
31.08
mon
mon
Day
81°F
E 6 mph
Precip.
1%
1%
Night
72°F
W 6 mph
Precip.
7%
7%
01.09
tue
tue
Day
79°F
SW 11 mph
Precip.
3%
3%
Night
72°F
W 8 mph
Precip.
4%
4%
02.09
wed
wed
Day
82°F
W 2 mph
Precip.
11%
11%
Night
70°F
SW 11 mph
Precip.
21%
21%
03.09
thu
thu
Day
82°F
SW 9 mph
Precip.
1%
1%
Night
72°F
W 6 mph
Precip.
3%
3%
04.09
fri
fri
Day
79°F
NE 5 mph
Precip.
3%
3%
Night
73°F
W 6 mph
Precip.
12%
12%
05.09
sat
sat
Day
73°F
SW 14 mph
Precip.
8%
8%
Night
66°F
W 14 mph
Precip.
9%
9%
06.09
sun
sun
Day
73°F
SW 5 mph
Precip.
1%
1%
Night
64°F
W 8 mph
Precip.
3%
3%
07.09
mon
mon
Day
77°F
SW 6 mph
Precip.
2%
2%
Night
64°F
SW 6 mph
Precip.
8%
8%
08.09
tue
tue
Day
79°F
NW 4 mph
Precip.
2%
2%
Night
68°F
W 5 mph
Precip.
5%
5%
09.09
wed
wed
Day
75°F
NE 4 mph
Precip.
1%
1%
Night
68°F
W 5 mph
Precip.
3%
3%
10.09
thu
thu
Day
79°F
NE 3 mph
Precip.
3%
3%
Night
72°F
W 6 mph
Precip.
3%
3%
11.09
fri
fri
Day
81°F
NE 4 mph
Precip.
1%
1%
Night
72°F
W 4 mph
Precip.
3%
3%
12.09
sat
sat
Day
77°F
E 5 mph
Precip.
3%
3%
Night
72°F
SW 5 mph
Precip.
15%
15%
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 81.3°F. The highest and lowest sea temperatures during the month were 84.4°F and 79.7°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 75.2°F. The highest and lowest sea temperatures during the month were 77.9°F and 72.9°F.
Air temperature in Trieste, °F
Precipitation total in Trieste, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Trieste
Trieste on a weather map
Places in Italy:
Name
°F
24 Hours Forecast
Trieste
Local time: 15:33
August 30, sunday
1800
81°F
NE
6 mph
6 mph
2100
75°F
SW
4 mph
4 mph
August 31, monday
0000
72°F
W
6 mph
6 mph
0300
70°F
W
6 mph
6 mph
0600
68°F
W
5 mph
5 mph
0900
75°F
W
3 mph
3 mph
1200
81°F
E
6 mph
6 mph
1500
81°F
NE
5 mph
5 mph
