Annual mean 9°C · wettest around February · prevailing wind W
Warmest
25.3 °C
Coldest
-2.9 °C
Wettest
32%
Windiest
5.3 m/s
Prevailing
W
4.3 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 9°C. July is the hottest month, with highs of about 25°C; January is the coldest, with lows of about -4°C. Hamilton has no sharply defined rainy season: the chance of rain on a given day runs from 11% in July, the driest month, to 23% in February, the wettest. Winds in Hamilton are highest in February, averaging 4.2 m/s (15 km/h), and lightest in July, at 2.7 m/s (10 km/h). The prevailing wind is from the W. The clearest skies in Hamilton come in July, when the sky is typically 45% covered; December is the cloudiest month, at 73%.
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
-2°C
-4°C
-8°C
22%
72%
4.0 m/s
0
0
1
February
-1°C
-4°C
-7°C
23%
66%
4.2 m/s
0
0
3
March
3°C
-1°C
-3°C
17%
59%
4.1 m/s
1
0
10
April
8°C
4°C
3°C
19%
58%
3.9 m/s
6
0
30
May
16°C
10°C
12°C
14%
53%
3.3 m/s
36
7
62
June
22°C
16°C
20°C
13%
49%
3.1 m/s
68
22
63
July
25°C
19°C
25°C
11%
45%
2.7 m/s
69
48
34
August
24°C
18°C
24°C
11%
46%
2.7 m/s
73
46
40
September
21°C
14°C
20°C
11%
47%
2.8 m/s
67
20
66
October
14°C
9°C
10°C
17%
57%
3.3 m/s
28
3
59
November
6°C
3°C
1°C
16%
63%
3.7 m/s
4
0
21
December
1°C
-1°C
-5°C
20%
73%
4.0 m/s
0
0
3
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 -2°C at their warmest in January, its coolest month, and 25°C in July, its warmest; the coolest hours of the day run from -4°C to 19°C through the year, and the average temperature over the year is 9°C around the clock. Rain is most likely around February and least likely around July. 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 -1°CLow -3°CRain 22%
Winter in Hamilton has typical daily highs of about -1°C and lows of about -3°C, with a 22% chance of rain on a given day.
Hamilton weather in springMarch to May
High 9°CLow 4°CRain 17%
Spring in Hamilton has typical daily highs of about 9°C and lows of about 4°C, with a 17% chance of rain on a given day.
Hamilton weather in summerJune to August
High 24°CLow 17°CRain 11%
Summer in Hamilton has typical daily highs of about 24°C and lows of about 17°C, with a 11% chance of rain on a given day.
Hamilton weather in autumnSeptember to November
High 14°CLow 9°CRain 15%
Autumn in Hamilton has typical daily highs of about 14°C and lows of about 9°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 July, the driest month, to 23% in February, the wettest.
What time of year is Hamilton windiest?
Winds in Hamilton are highest in February, averaging 4.2 m/s (15 km/h), and lightest in July, at 2.7 m/s (10 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 9°C. July is the hottest month, with highs of about 25°C; January is the coldest, with lows of about -4°C.