21.12
sun
sun
Day
52°F
SW 5 mph
Precip.
0%
0%
Night
41°F
W 6 mph
Precip.
0%
0%
22.12
mon
mon
Day
48°F
SW 4 mph
Precip.
0%
0%
Night
48°F
W 4 mph
Precip.
100%
100%
23.12
tue
tue
Day
52°F
W 2 mph
Precip.
100%
100%
Night
48°F
SW 8 mph
Precip.
100%
100%
24.12
wed
wed
Day
43°F
SW 16 mph
Precip.
100%
100%
Night
36°F
W 16 mph
Precip.
100%
100%
25.12
thu
thu
Day
43°F
SW 11 mph
Precip.
0%
0%
Night
37°F
W 9 mph
Precip.
0%
0%
26.12
fri
fri
Day
45°F
SW 9 mph
Precip.
0%
0%
Night
39°F
SW 9 mph
Precip.
0%
0%
27.12
sat
sat
Day
45°F
SW 7 mph
Precip.
0%
0%
Night
36°F
W 5 mph
Precip.
0%
0%
28.12
sun
sun
Day
43°F
SW 3 mph
Precip.
0%
0%
Night
36°F
W 4 mph
Precip.
0%
0%
29.12
mon
mon
Day
43°F
NE 2 mph
Precip.
0%
0%
Night
37°F
W 3 mph
Precip.
0%
0%
30.12
tue
tue
Day
45°F
NW 1 mph
Precip.
0%
0%
Night
34°F
W 5 mph
Precip.
0%
0%
31.12
wed
wed
Day
41°F
SW 8 mph
Precip.
0%
0%
Night
32°F
W 16 mph
Precip.
0%
0%
01.01
thu
thu
Day
36°F
SW 7 mph
Precip.
0%
0%
Night
30°F
SW 3 mph
Precip.
0%
0%
02.01
fri
fri
Day
37°F
NE 1 mph
Precip.
0%
0%
Night
30°F
W 2 mph
Precip.
0%
0%
03.01
sat
sat
Day
39°F
NE 2 mph
Precip.
0%
0%
Night
34°F
W 4 mph
Precip.
0%
0%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 55.7°F. The highest and lowest sea temperatures during the month were 56.5°F and 54.5°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 50.0°F. The highest and lowest sea temperatures during the month were 50.9°F and 48.7°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: 05:11
December 21, sunday
0600
43°F
W
5 mph
5 mph
0900
45°F
W
5 mph
5 mph
1200
52°F
SW
5 mph
5 mph
1500
52°F
SW
4 mph
4 mph
1800
45°F
W
6 mph
6 mph
2100
41°F
W
6 mph
6 mph
December 22, monday
0000
41°F
W
6 mph
6 mph
0300
39°F
W
6 mph
6 mph
