20.05
wed
wed
Day
73°F
SW 4 mph
Precip.
0%
0%
Night
55°F
W 6 mph
Precip.
0%
0%
21.05
thu
thu
Day
73°F
SE 3 mph
Precip.
0%
0%
Night
57°F
W 6 mph
Precip.
0%
0%
22.05
fri
fri
Day
75°F
SE 4 mph
Precip.
0%
0%
Night
59°F
W 6 mph
Precip.
0%
0%
23.05
sat
sat
Day
75°F
SW 7 mph
Precip.
0%
0%
Night
61°F
W 5 mph
Precip.
0%
0%
24.05
sun
sun
Day
79°F
SW 4 mph
Precip.
0%
0%
Night
63°F
W 4 mph
Precip.
0%
0%
25.05
mon
mon
Day
82°F
NW 3 mph
Precip.
0%
0%
Night
66°F
W 4 mph
Precip.
0%
0%
26.05
tue
tue
Day
82°F
NW 4 mph
Precip.
0%
0%
Night
64°F
W 6 mph
Precip.
0%
0%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 62.1°F. The highest and lowest sea temperatures during the month were 65.3°F and 57.7°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 75.4°F. The highest and lowest sea temperatures during the month were 80.8°F and 71.2°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: 06:02
May 20, wednesday
0900
66°F
SW
4 mph
4 mph
1200
73°F
SW
4 mph
4 mph
1500
75°F
SE
2 mph
2 mph
1800
70°F
NE
4 mph
4 mph
2100
59°F
SW
4 mph
4 mph
May 21, thursday
0000
55°F
W
6 mph
6 mph
0300
54°F
W
6 mph
6 mph
0600
52°F
W
6 mph
6 mph
