Annual mean 23°C · wettest around November · prevailing wind W
Warmest
29.3 °C
Coldest
19.2 °C
Wettest
76%
Windiest
7.1 m/s
Prevailing
W
5.6 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 Hamilton over the whole year is 23°C. August is the hottest month, with highs of about 29°C; March is the coldest, with lows of about 17°C. Hamilton has no sharply defined rainy season: the chance of rain on a given day runs from 33% in May, the driest month, to 53% in November, the wettest. Winds in Hamilton are highest in January, averaging 6.2 m/s (22 km/h), and lightest in July, at 4.0 m/s (14 km/h). The prevailing wind is from the W. The clearest skies in Hamilton come in August, when the sky is typically 59% covered; January is the cloudiest month, at 82%.
Month by month Hamilton 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
20°C
18°C
16°C
43%
82%
6.2 m/s
55
0
70
February
20°C
18°C
16°C
42%
75%
5.7 m/s
61
0
73
March
19°C
17°C
16°C
47%
75%
6.1 m/s
59
1
72
April
21°C
19°C
18°C
41%
73%
5.1 m/s
72
2
71
May
23°C
21°C
22°C
33%
71%
4.6 m/s
80
25
46
June
26°C
24°C
27°C
40%
73%
4.6 m/s
51
55
14
July
28°C
27°C
30°C
38%
62%
4.0 m/s
12
67
1
August
29°C
27°C
31°C
46%
59%
4.0 m/s
5
62
0
September
28°C
26°C
29°C
41%
68%
4.2 m/s
22
63
3
October
26°C
24°C
25°C
45%
70%
4.8 m/s
59
46
21
November
23°C
21°C
21°C
53%
74%
5.1 m/s
73
16
51
December
21°C
19°C
18°C
36%
78%
5.5 m/s
69
2
73
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 Hamilton weather by season
Year round, Hamilton has days of about 19°C at their warmest in March, its coolest month, and 29°C in August, its warmest; the coolest hours of the day run from 17°C to 27°C through the year, and the average temperature over the year is 23°C around the clock. Rain is most likely around November and least likely around May. 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.
Hamilton weather in winterDecember to February
High 20°CLow 18°CRain 40%
Winter in Hamilton has typical daily highs of about 20°C and lows of about 18°C, with a 40% chance of rain on a given day.
Hamilton weather in springMarch to May
High 21°CLow 19°CRain 40%
Spring in Hamilton has typical daily highs of about 21°C and lows of about 19°C, with a 40% chance of rain on a given day.
Hamilton weather in summerJune to August
High 28°CLow 26°CRain 41%
Summer in Hamilton has typical daily highs of about 28°C and lows of about 26°C, with a 41% chance of rain on a given day.
Hamilton weather in autumnSeptember to November
High 25°CLow 24°CRain 46%
Autumn in Hamilton has typical daily highs of about 25°C and lows of about 24°C, with a 46% chance of rain on a given day.
When is the rainy season in Hamilton?
Hamilton has no sharply defined rainy season: the chance of rain on a given day runs from 33% in May, the driest month, to 53% in November, the wettest.
What time of year is Hamilton windiest?
Winds in Hamilton are highest in January, averaging 6.2 m/s (22 km/h), and lightest in July, at 4.0 m/s (14 km/h). The prevailing wind is from the W.
What is the average temperature in Hamilton year round?
The average temperature in Hamilton over the whole year is 23°C. August is the hottest month, with highs of about 29°C; March is the coldest, with lows of about 17°C.