Annual mean 17°C · wettest around July · prevailing wind SW
Warmest
25.5 °C
Coldest
16.6 °C
Wettest
62%
Windiest
4.8 m/s
Prevailing
SW
4.1 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
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 Hermanus over the whole year is 17°C. February is the hottest month, with highs of about 25°C; July is the coldest, with lows of about 10°C. Hermanus has no sharply defined rainy season: the chance of rain on a given day runs from 32% in February, the driest month, to 52% in July, the wettest. Winds in Hermanus are highest in December, averaging 3.8 m/s (14 km/h), and lightest in May, at 2.7 m/s (10 km/h). The prevailing wind is from the SW. The clearest skies in Hermanus come in February, when the sky is typically 48% covered; September is the cloudiest month, at 54%.
Month by month Hermanus 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
25°C
19°C
24°C
32%
49%
3.7 m/s
68
33
43
February
25°C
19°C
24°C
32%
48%
3.5 m/s
69
34
43
March
23°C
17°C
22°C
36%
52%
3.2 m/s
75
24
54
April
22°C
15°C
20°C
35%
51%
3.1 m/s
74
16
65
May
20°C
13°C
18°C
39%
52%
2.7 m/s
72
6
75
June
18°C
11°C
15°C
50%
54%
3.2 m/s
52
3
76
July
17°C
10°C
14°C
52%
51%
3.2 m/s
42
1
76
August
17°C
10°C
14°C
44%
53%
3.3 m/s
41
1
78
September
18°C
12°C
15°C
42%
54%
3.4 m/s
51
4
76
October
21°C
14°C
19°C
37%
51%
3.6 m/s
67
12
69
November
22°C
16°C
20°C
38%
49%
3.7 m/s
73
14
66
December
24°C
17°C
22°C
36%
48%
3.8 m/s
75
23
56
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 Hermanus weather by season
Year round, Hermanus has days of about 17°C at their warmest in July, its coolest month, and 25°C in February, its warmest; the coolest hours of the day run from 10°C to 19°C through the year, and the average temperature over the year is 17°C around the clock. Rain is most likely around July and least likely around February. 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.
Hermanus weather in winterJune to August
High 17°CLow 11°CRain 49%
Winter in Hermanus has typical daily highs of about 17°C and lows of about 11°C, with a 49% chance of rain on a given day.
Hermanus weather in springSeptember to November
High 21°CLow 14°CRain 39%
Spring in Hermanus has typical daily highs of about 21°C and lows of about 14°C, with a 39% chance of rain on a given day.
Hermanus weather in summerDecember to February
High 25°CLow 18°CRain 33%
Summer in Hermanus has typical daily highs of about 25°C and lows of about 18°C, with a 33% chance of rain on a given day.
Hermanus weather in autumnMarch to May
High 21°CLow 15°CRain 37%
Autumn in Hermanus has typical daily highs of about 21°C and lows of about 15°C, with a 37% chance of rain on a given day.
When is the rainy season in Hermanus?
Hermanus has no sharply defined rainy season: the chance of rain on a given day runs from 32% in February, the driest month, to 52% in July, the wettest.
What time of year is Hermanus windiest?
Winds in Hermanus are highest in December, averaging 3.8 m/s (14 km/h), and lightest in May, at 2.7 m/s (10 km/h). The prevailing wind is from the SW.
What is the average temperature in Hermanus year round?
The average temperature in Hermanus over the whole year is 17°C. February is the hottest month, with highs of about 25°C; July is the coldest, with lows of about 10°C.