Annual mean 11°C · wettest around January · prevailing wind SW
Warmest
22.7 °C
Coldest
3.0 °C
Wettest
62%
Windiest
5.4 m/s
Prevailing
SW
4.3 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 Hamm over the whole year is 11°C. August is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 2°C. The rainy (wet) season in Hamm runs from October to March, peaking in January with a 56% chance of rain on a given day. The dry season is April to September; August is the driest month, at 28%. Winds in Hamm are highest in February, averaging 4.5 m/s (16 km/h), and lightest in September, at 2.9 m/s (10 km/h). The prevailing wind is from the SW. The clearest skies in Hamm come in August, when the sky is typically 52% covered; December is the cloudiest month, at 79%.
Month by month Hamm 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
4°C
2°C
-1°C
56%
78%
4.3 m/s
0
0
5
February
6°C
3°C
1°C
52%
68%
4.5 m/s
1
0
14
March
9°C
4°C
4°C
48%
65%
3.8 m/s
3
0
30
April
12°C
6°C
8°C
39%
56%
3.4 m/s
14
0
53
May
17°C
11°C
14°C
36%
53%
3.1 m/s
44
4
74
June
21°C
15°C
19°C
32%
54%
3.1 m/s
69
16
66
July
22°C
16°C
20°C
33%
55%
3.1 m/s
74
15
68
August
22°C
15°C
21°C
28%
52%
3.0 m/s
72
21
62
September
19°C
12°C
17°C
34%
52%
2.9 m/s
57
9
74
October
14°C
10°C
11°C
43%
60%
3.6 m/s
20
0
71
November
8°C
5°C
4°C
52%
68%
3.7 m/s
1
0
31
December
9°C
4°C
4°C
53%
79%
4.1 m/s
7
8
9
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 Hamm weather by season
Year round, Hamm has days of about 4°C at their warmest in January, its coolest month, and 22°C in August, its warmest; the coolest hours of the day run from 2°C to 16°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around January 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.
Hamm weather in winterDecember to February
High 6°CLow 3°CRain 54%
Winter in Hamm has typical daily highs of about 6°C and lows of about 3°C, with a 54% chance of rain on a given day.
Hamm weather in springMarch to May
High 13°CLow 7°CRain 41%
Spring in Hamm has typical daily highs of about 13°C and lows of about 7°C, with a 41% chance of rain on a given day.
Hamm weather in summerJune to August
High 22°CLow 16°CRain 31%
Summer in Hamm has typical daily highs of about 22°C and lows of about 16°C, with a 31% chance of rain on a given day.
Hamm weather in autumnSeptember to November
High 14°CLow 9°CRain 43%
Autumn in Hamm has typical daily highs of about 14°C and lows of about 9°C, with a 43% chance of rain on a given day.
When is the rainy season in Hamm?
The rainy (wet) season in Hamm runs from October to March, peaking in January with a 56% chance of rain on a given day. The dry season is April to September; August is the driest month, at 28%.
What time of year is Hamm windiest?
Winds in Hamm are highest in February, averaging 4.5 m/s (16 km/h), and lightest in September, at 2.9 m/s (10 km/h). The prevailing wind is from the SW.
What is the average temperature in Hamm year round?
The average temperature in Hamm over the whole year is 11°C. August is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 2°C.