Annual mean 14°C · wettest around November · prevailing wind NW
Warmest
28.3 °C
Coldest
7.1 °C
Wettest
25%
Windiest
3.4 m/s
Prevailing
NW
2.7 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 Koper over the whole year is 14°C. August is the hottest month, with highs of about 28°C; January is the coldest, with lows of about 3°C. Koper has no sharply defined rainy season: the chance of rain on a given day runs from 10% in August, the driest month, to 21% in November, the wettest. Winds in Koper are highest in March, averaging 2.6 m/s (9 km/h), and lightest in June, at 2.2 m/s (8 km/h). The prevailing wind is from the NW. The clearest skies in Koper come in August, when the sky is typically 33% covered; November is the cloudiest month, at 61%.
Month by month Koper 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
8°C
3°C
4°C
14%
56%
2.4 m/s
0
0
37
February
9°C
4°C
6°C
17%
59%
2.4 m/s
2
0
54
March
12°C
5°C
9°C
14%
50%
2.6 m/s
11
0
69
April
16°C
9°C
13°C
14%
50%
2.5 m/s
45
1
80
May
20°C
13°C
18°C
19%
55%
2.3 m/s
76
13
72
June
26°C
19°C
26°C
12%
39%
2.2 m/s
59
60
25
July
28°C
20°C
28°C
11%
35%
2.3 m/s
38
68
14
August
28°C
19°C
28°C
10%
33%
2.4 m/s
37
66
13
September
23°C
15°C
23°C
17%
43%
2.3 m/s
73
38
46
October
18°C
12°C
17°C
17%
51%
2.3 m/s
72
5
79
November
13°C
8°C
11°C
21%
61%
2.4 m/s
25
0
71
December
9°C
4°C
6°C
17%
58%
2.2 m/s
2
0
49
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 Koper weather by season
Year round, Koper has days of about 8°C at their warmest in January, its coolest month, and 28°C in August, its warmest; the coolest hours of the day run from 3°C to 20°C through the year, and the average temperature over the year is 14°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.
Koper weather in winterDecember to February
High 9°CLow 3°CRain 16%
Winter in Koper has typical daily highs of about 9°C and lows of about 3°C, with a 16% chance of rain on a given day.
Koper weather in springMarch to May
High 16°CLow 9°CRain 16%
Spring in Koper has typical daily highs of about 16°C and lows of about 9°C, with a 16% chance of rain on a given day.
Koper weather in summerJune to August
High 27°CLow 19°CRain 11%
Summer in Koper has typical daily highs of about 27°C and lows of about 19°C, with a 11% chance of rain on a given day.
Koper weather in autumnSeptember to November
High 18°CLow 12°CRain 18%
Autumn in Koper has typical daily highs of about 18°C and lows of about 12°C, with a 18% chance of rain on a given day.
When is the rainy season in Koper?
Koper has no sharply defined rainy season: the chance of rain on a given day runs from 10% in August, the driest month, to 21% in November, the wettest.
What time of year is Koper windiest?
Winds in Koper are highest in March, averaging 2.6 m/s (9 km/h), and lightest in June, at 2.2 m/s (8 km/h). The prevailing wind is from the NW.
What is the average temperature in Koper year round?
The average temperature in Koper over the whole year is 14°C. August is the hottest month, with highs of about 28°C; January is the coldest, with lows of about 3°C.