Annual mean 15°C · wettest around July · prevailing wind W
Warmest
23.7 °C
Coldest
12.7 °C
Wettest
28%
Windiest
5.4 m/s
Prevailing
W
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
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 15°C. February is the hottest month, with highs of about 23°C; August is the coldest, with lows of about 7°C. Hamilton has no sharply defined rainy season: the chance of rain on a given day runs from 11% in March, the driest month, to 25% in July, the wettest. Winds in Hamilton are highest in September, averaging 4.2 m/s (15 km/h), and lightest in March, at 3.4 m/s (12 km/h). The prevailing wind is from the W. The clearest skies in Hamilton come in March, when the sky is typically 50% covered; September is the cloudiest month, at 63%.
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
23°C
16°C
21°C
11%
52%
3.9 m/s
86
24
60
February
23°C
16°C
22°C
12%
55%
3.6 m/s
87
25
57
March
21°C
14°C
19°C
11%
50%
3.4 m/s
86
7
77
April
19°C
13°C
17°C
15%
54%
3.6 m/s
74
2
83
May
17°C
10°C
15°C
20%
52%
3.5 m/s
42
5
76
June
14°C
9°C
11°C
22%
56%
3.4 m/s
19
0
79
July
13°C
8°C
10°C
25%
56%
3.8 m/s
9
0
71
August
14°C
7°C
10°C
19%
52%
3.5 m/s
9
0
75
September
15°C
10°C
12°C
21%
63%
4.2 m/s
21
0
79
October
17°C
11°C
14°C
18%
62%
4.1 m/s
41
0
81
November
19°C
14°C
17°C
16%
61%
4.0 m/s
69
2
81
December
22°C
16°C
20°C
15%
54%
3.8 m/s
83
13
69
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 13°C at their warmest in July, its coolest month, and 23°C in February, its warmest; the coolest hours of the day run from 7°C to 16°C through the year, and the average temperature over the year is 15°C around the clock. Rain is most likely around July and least likely around March. 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 winterJune to August
High 14°CLow 8°CRain 22%
Winter in Hamilton has typical daily highs of about 14°C and lows of about 8°C, with a 22% chance of rain on a given day.
Hamilton weather in springSeptember to November
High 17°CLow 11°CRain 18%
Spring in Hamilton has typical daily highs of about 17°C and lows of about 11°C, with a 18% chance of rain on a given day.
Hamilton weather in summerDecember to February
High 22°CLow 16°CRain 13%
Summer in Hamilton has typical daily highs of about 22°C and lows of about 16°C, with a 13% chance of rain on a given day.
Hamilton weather in autumnMarch to May
High 19°CLow 12°CRain 15%
Autumn in Hamilton has typical daily highs of about 19°C and lows of about 12°C, with a 15% 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 11% in March, the driest month, to 25% in July, the wettest.
What time of year is Hamilton windiest?
Winds in Hamilton are highest in September, averaging 4.2 m/s (15 km/h), and lightest in March, at 3.4 m/s (12 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 15°C. February is the hottest month, with highs of about 23°C; August is the coldest, with lows of about 7°C.