Hamilton weather by month

Check out Hamilton weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature
Rainfall
Sunshine & UV index

Temperature in Hamilton (°F)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	28	30	39	54	66	75	81	79	70	57	46	34
Min temperature (night-time)	16	16	25	36	46	55	61	59	52	41	34	21
Heat & Humidity	0	0	0	0	0	0	M	L	0	0	0	0
Sea temperature	37	36	36	37	45	55	66	70	66	57	48	41

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Hamilton

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	3	4	5	6	8	9	9	8	6	5	3	2
Daily hours of daylight	9	11	12	13	15	15	15	14	12	11	10	9
UV Index (Maximum)	1	2	4	5	7	8	8	7	6	3	2	1

Rainfall in Hamilton

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	12	10	12	11	11	10	9	9	10	11	13	14
Average monthly rainfall (inches)	2.4	2.2	2.7	2.9	2.9	3.0	2.9	3.6	3.3	2.8	3.1	3.2

More about Hamilton

Hamilton by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Ontario (Hamilton) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Hamilton?

Hamilton has a cold climate with hot summers and some rainfall in all months.

Hamilton weather in January

Expect daytime maximum temperatures of 28°F in Hamilton, Ontario in January based on long-term weather averages. There are 3 hours of sunshine per day on average with 12 days with some rainfall and typically 2.4 inches of rainfall in the month, which might fall as snow.

28
28°F max day temperature
3
3 hours of sunshine per day
12
12 days with some rainfall
16
16°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
2.4
2.4 inches of monthly rainfall
1
1 (Low) UV index
37
37°F sea temperature

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Hamilton weather in February

Expect daytime maximum temperatures of 30°F in Hamilton, Ontario in February based on long-term weather averages. There are 4 hours of sunshine per day on average with 10 days with some rainfall and typically 2.2 inches of rainfall in the month, which might fall as snow.

30
30°F max day temperature
4
4 hours of sunshine per day
10
10 days with some rainfall
16
16°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
2.2
2.2 inches of monthly rainfall
2
2 (Low) UV index
36
36°F sea temperature

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Hamilton weather in March

Expect daytime maximum temperatures of 39°F in Hamilton, Ontario in March based on long-term weather averages. There are 5 hours of sunshine per day on average with 12 days with some rainfall and typically 2.7 inches of rainfall in the month, which might fall as snow.

39
39°F max day temperature
5
5 hours of sunshine per day
12
12 days with some rainfall
25
25°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
2.7
2.7 inches of monthly rainfall
4
4 (Moderate) UV index
36
36°F sea temperature

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Hamilton weather in April

Expect daytime maximum temperatures of 54°F in Hamilton, Ontario in April based on long-term weather averages. There are 6 hours of sunshine per day on average with 11 days with some rainfall and typically 2.9 inches of rainfall in the month.

54
54°F max day temperature
6
6 hours of sunshine per day
11
11 days with some rainfall
36
36°F min night temperature
13
13 hours of daylight per day
0
No heat & humidity
2.9
2.9 inches of monthly rainfall
5
5 (Moderate) UV index
37
37°F sea temperature

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Hamilton weather in May

Expect daytime maximum temperatures of 66°F in Hamilton, Ontario in May based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 2.9 inches of rainfall in the month.

66
66°F max day temperature
8
8 hours of sunshine per day
11
11 days with some rainfall
46
46°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
2.9
2.9 inches of monthly rainfall
7
7 (High) UV index
45
45°F sea temperature

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Hamilton weather in June

Expect daytime maximum temperatures of 75°F in Hamilton, Ontario in June based on long-term weather averages. There are 9 hours of sunshine per day on average with 10 days with some rainfall and typically 3.0 inches of rainfall in the month.

75
75°F max day temperature
9
9 hours of sunshine per day
10
10 days with some rainfall
55
55°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
3.0
3.0 inches of monthly rainfall
8
8 (Very High) UV index
55
55°F sea temperature

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Hamilton weather in July

Expect daytime maximum temperatures of 81°F in Hamilton, Ontario in July based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 2.9 inches of rainfall in the month.

81
81°F max day temperature
9
9 hours of sunshine per day
9
9 days with some rainfall
61
61°F min night temperature
15
15 hours of daylight per day
M
Moderate heat & humidity
2.9
2.9 inches of monthly rainfall
8
8 (Very High) UV index
66
66°F sea temperature

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Hamilton weather in August

Expect daytime maximum temperatures of 79°F in Hamilton, Ontario in August based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 3.6 inches of rainfall in the month.

79
79°F max day temperature
8
8 hours of sunshine per day
9
9 days with some rainfall
59
59°F min night temperature
14
14 hours of daylight per day
L
Low heat & humidity
3.6
3.6 inches of monthly rainfall
7
7 (High) UV index
70
70°F sea temperature

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Hamilton weather in September

Expect daytime maximum temperatures of 70°F in Hamilton, Ontario in September based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 3.3 inches of rainfall in the month.

70
70°F max day temperature
6
6 hours of sunshine per day
10
10 days with some rainfall
52
52°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
3.3
3.3 inches of monthly rainfall
6
6 (High) UV index
66
66°F sea temperature

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Hamilton weather in October

Expect daytime maximum temperatures of 57°F in Hamilton, Ontario in October based on long-term weather averages. There are 5 hours of sunshine per day on average with 11 days with some rainfall and typically 2.8 inches of rainfall in the month.

57
57°F max day temperature
5
5 hours of sunshine per day
11
11 days with some rainfall
41
41°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
2.8
2.8 inches of monthly rainfall
3
3 (Moderate) UV index
57
57°F sea temperature

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Hamilton weather in November

Expect daytime maximum temperatures of 46°F in Hamilton, Ontario in November based on long-term weather averages. There are 3 hours of sunshine per day on average with 13 days with some rainfall and typically 3.1 inches of rainfall in the month.

46
46°F max day temperature
3
3 hours of sunshine per day
13
13 days with some rainfall
34
34°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
3.1
3.1 inches of monthly rainfall
2
2 (Low) UV index
48
48°F sea temperature

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Hamilton weather in December

Expect daytime maximum temperatures of 34°F in Hamilton, Ontario in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 14 days with some rainfall and typically 3.2 inches of rainfall in the month, which might fall as snow.

34
34°F max day temperature
2
2 hours of sunshine per day
14
14 days with some rainfall
21
21°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
3.2
3.2 inches of monthly rainfall
1
1 (Low) UV index
41
41°F sea temperature

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