Annual mean 13°C · wettest around November · prevailing wind NE
Warmest
27.5 °C
Coldest
6.0 °C
Wettest
25%
Windiest
3.1 m/s
Prevailing
NE
2.5 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Trieste over the whole year is 13°C. August is the hottest month, with highs of about 27°C; January is the coldest, with lows of about 2°C. Trieste has no sharply defined rainy season: the chance of rain on a given day runs from 11% in August, the driest month, to 22% in November, the wettest. Winds in Trieste are highest in March, averaging 2.4 m/s (9 km/h), and lightest in June, at 2.1 m/s (8 km/h). The prevailing wind is from the NE. The clearest skies in Trieste come in August, when the sky is typically 35% covered; November is the cloudiest month, at 62%.
Month by month Trieste climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
7°C
2°C
4°C
15%
57%
2.3 m/s
0
0
34
February
8°C
3°C
6°C
18%
60%
2.3 m/s
2
0
51
March
11°C
5°C
8°C
15%
52%
2.4 m/s
11
0
66
April
15°C
8°C
13°C
15%
51%
2.4 m/s
44
1
78
May
19°C
13°C
18°C
21%
56%
2.2 m/s
72
12
70
June
25°C
18°C
25°C
13%
40%
2.1 m/s
58
56
28
July
27°C
19°C
28°C
12%
37%
2.2 m/s
39
65
17
August
27°C
19°C
28°C
11%
35%
2.2 m/s
38
63
16
September
22°C
15°C
22°C
18%
45%
2.2 m/s
71
36
47
October
17°C
11°C
17°C
18%
52%
2.2 m/s
68
4
78
November
12°C
7°C
10°C
22%
62%
2.3 m/s
23
0
67
December
8°C
3°C
5°C
18%
59%
2.1 m/s
2
0
44
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Trieste weather by season
Year round, Trieste has days of about 7°C at their warmest in January, its coolest month, and 27°C in August, its warmest; the coolest hours of the day run from 2°C to 19°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around November and least likely around August. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Trieste weather in winterDecember to February
High 8°CLow 3°CRain 17%
Winter in Trieste has typical daily highs of about 8°C and lows of about 3°C, with a 17% chance of rain on a given day.
Trieste weather in springMarch to May
High 15°CLow 8°CRain 17%
Spring in Trieste has typical daily highs of about 15°C and lows of about 8°C, with a 17% chance of rain on a given day.
Trieste weather in summerJune to August
High 26°CLow 19°CRain 12%
Summer in Trieste has typical daily highs of about 26°C and lows of about 19°C, with a 12% chance of rain on a given day.
Trieste weather in autumnSeptember to November
High 17°CLow 11°CRain 20%
Autumn in Trieste has typical daily highs of about 17°C and lows of about 11°C, with a 20% chance of rain on a given day.
When is the rainy season in Trieste?
Trieste has no sharply defined rainy season: the chance of rain on a given day runs from 11% in August, the driest month, to 22% in November, the wettest.
What time of year is Trieste windiest?
Winds in Trieste are highest in March, averaging 2.4 m/s (9 km/h), and lightest in June, at 2.1 m/s (8 km/h). The prevailing wind is from the NE.
What is the average temperature in Trieste year round?
The average temperature in Trieste over the whole year is 13°C. August is the hottest month, with highs of about 27°C; January is the coldest, with lows of about 2°C.