Annual mean 10°C · wettest around May · prevailing wind SW
Warmest
21.7 °C
Coldest
1.8 °C
Wettest
41%
Windiest
5.4 m/s
Prevailing
SW
4.5 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 Siegen over the whole year is 10°C. August is the hottest month, with highs of about 21°C; January is the coldest, with lows of about 1°C. Siegen has no sharply defined rainy season: the chance of rain on a given day runs from 22% in August, the driest month, to 35% in May, the wettest. Winds in Siegen are highest in February, averaging 4.7 m/s (17 km/h), and lightest in September, at 3.1 m/s (11 km/h). The prevailing wind is from the SW. The clearest skies in Siegen come in August, when the sky is typically 50% covered; December is the cloudiest month, at 81%.
Month by month Siegen 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
3°C
1°C
-3°C
29%
78%
4.5 m/s
0
0
4
February
5°C
2°C
-1°C
27%
69%
4.7 m/s
1
0
11
March
8°C
3°C
3°C
26%
63%
4.1 m/s
2
0
25
April
12°C
6°C
7°C
27%
58%
3.8 m/s
12
0
46
May
16°C
10°C
12°C
35%
53%
3.5 m/s
35
2
69
June
21°C
15°C
18°C
29%
52%
3.4 m/s
63
13
69
July
21°C
16°C
18°C
27%
55%
3.3 m/s
67
13
70
August
21°C
15°C
19°C
22%
50%
3.2 m/s
66
17
66
September
18°C
12°C
15°C
33%
54%
3.1 m/s
50
7
73
October
13°C
9°C
9°C
32%
65%
3.8 m/s
17
0
61
November
7°C
4°C
2°C
34%
74%
3.9 m/s
0
0
22
December
5°C
3°C
0°C
30%
81%
4.3 m/s
2
2
7
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 Siegen weather by season
Year round, Siegen has days of about 3°C at their warmest in January, its coolest month, and 21°C in August, its warmest; the coolest hours of the day run from 1°C to 16°C through the year, and the average temperature over the year is 10°C around the clock. Rain is most likely around May 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.
Siegen weather in winterDecember to February
High 4°CLow 2°CRain 29%
Winter in Siegen has typical daily highs of about 4°C and lows of about 2°C, with a 29% chance of rain on a given day.
Siegen weather in springMarch to May
High 12°CLow 6°CRain 29%
Spring in Siegen has typical daily highs of about 12°C and lows of about 6°C, with a 29% chance of rain on a given day.
Siegen weather in summerJune to August
High 21°CLow 15°CRain 26%
Summer in Siegen has typical daily highs of about 21°C and lows of about 15°C, with a 26% chance of rain on a given day.
Siegen weather in autumnSeptember to November
High 12°CLow 8°CRain 33%
Autumn in Siegen has typical daily highs of about 12°C and lows of about 8°C, with a 33% chance of rain on a given day.
When is the rainy season in Siegen?
Siegen has no sharply defined rainy season: the chance of rain on a given day runs from 22% in August, the driest month, to 35% in May, the wettest.
What time of year is Siegen windiest?
Winds in Siegen are highest in February, averaging 4.7 m/s (17 km/h), and lightest in September, at 3.1 m/s (11 km/h). The prevailing wind is from the SW.
What is the average temperature in Siegen year round?
The average temperature in Siegen over the whole year is 10°C. August is the hottest month, with highs of about 21°C; January is the coldest, with lows of about 1°C.