Chatham weather by month

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

Temperature
Rainfall
Sunshine & daylight
UV levels & humidity

Temperature in Chatham (°C)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	3	3	6	11	16	21	25	24	21	16	11	6
Min temperature (night-time)	-5	-5	0	3	8	14	17	17	14	9	4	-2
Heat & Humidity	0	0	0	0	0	0	0	0	0	0	0	0
Sea temperature	5	4	4	5	9	13	18	19	17	13	10	7

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

Sunshine & Daylight in Chatham

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

Rainfall in Chatham

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	12	11	12	11	11	11	9	10	8	9	11	13
Average monthly rainfall (mm)	103	90	101	93	81	67	64	90	84	89	111	114

More about Chatham

Chatham by month

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

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The climate guide for Massachusetts (Chatham) 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 Chatham?

Chatham has a cold climate with warm summers and some rainfall in all months.

Chatham weather in January

Expect daytime maximum temperatures of 3°C in Chatham, Massachusetts in January based on long-term weather averages. There are 5 hours of sunshine per day on average with 12 days with some rainfall and typically 103 mm of rainfall in the month, which might fall as snow.

3
3°C max day temperature
5
5 hours of sunshine per day
12
12 days with some rainfall
-5
-5°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
103
103 mm of monthly rainfall
1
1 (Low) UV index
5
5°C sea temperature

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Chatham weather in February

Expect daytime maximum temperatures of 3°C in Chatham, Massachusetts in February based on long-term weather averages. There are 6 hours of sunshine per day on average with 11 days with some rainfall and typically 90 mm of rainfall in the month, which might fall as snow.

3
3°C max day temperature
6
6 hours of sunshine per day
11
11 days with some rainfall
-5
-5°C min night temperature
11
11 hours of daylight per day
0
No heat & humidity
90
90 mm of monthly rainfall
2
2 (Low) UV index
4
4°C sea temperature

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Chatham weather in March

Expect daytime maximum temperatures of 6°C in Chatham, Massachusetts in March based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 101 mm of rainfall in the month.

6
6°C max day temperature
7
7 hours of sunshine per day
12
12 days with some rainfall
0
0°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
101
101 mm of monthly rainfall
4
4 (Moderate) UV index
4
4°C sea temperature

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Chatham weather in April

Expect daytime maximum temperatures of 11°C in Chatham, Massachusetts in April based on long-term weather averages. There are 7 hours of sunshine per day on average with 11 days with some rainfall and typically 93 mm of rainfall in the month.

11
11°C max day temperature
7
7 hours of sunshine per day
11
11 days with some rainfall
3
3°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
93
93 mm of monthly rainfall
6
6 (High) UV index
5
5°C sea temperature

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Chatham weather in May

Expect daytime maximum temperatures of 16°C in Chatham, Massachusetts 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 81 mm of rainfall in the month.

16
16°C max day temperature
8
8 hours of sunshine per day
11
11 days with some rainfall
8
8°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
81
81 mm of monthly rainfall
7
7 (High) UV index
9
9°C sea temperature

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Chatham weather in June

Expect daytime maximum temperatures of 21°C in Chatham, Massachusetts in June based on long-term weather averages. There are 9 hours of sunshine per day on average with 11 days with some rainfall and typically 67 mm of rainfall in the month.

21
21°C max day temperature
9
9 hours of sunshine per day
11
11 days with some rainfall
14
14°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
67
67 mm of monthly rainfall
8
8 (Very High) UV index
13
13°C sea temperature

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Chatham weather in July

Expect daytime maximum temperatures of 25°C in Chatham, Massachusetts in July based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 64 mm of rainfall in the month.

25
25°C max day temperature
9
9 hours of sunshine per day
9
9 days with some rainfall
17
17°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
64
64 mm of monthly rainfall
8
8 (Very High) UV index
18
18°C sea temperature

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Chatham weather in August

Expect daytime maximum temperatures of 24°C in Chatham, Massachusetts in August based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall and typically 90 mm of rainfall in the month.

24
24°C max day temperature
8
8 hours of sunshine per day
10
10 days with some rainfall
17
17°C min night temperature
14
14 hours of daylight per day
0
No heat & humidity
90
90 mm of monthly rainfall
8
8 (Very High) UV index
19
19°C sea temperature

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Chatham weather in September

Expect daytime maximum temperatures of 21°C in Chatham, Massachusetts in September based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 84 mm of rainfall in the month.

21
21°C max day temperature
8
8 hours of sunshine per day
8
8 days with some rainfall
14
14°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
84
84 mm of monthly rainfall
6
6 (High) UV index
17
17°C sea temperature

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Chatham weather in October

Expect daytime maximum temperatures of 16°C in Chatham, Massachusetts in October based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 89 mm of rainfall in the month.

16
16°C max day temperature
7
7 hours of sunshine per day
9
9 days with some rainfall
9
9°C min night temperature
11
11 hours of daylight per day
0
No heat & humidity
89
89 mm of monthly rainfall
4
4 (Moderate) UV index
13
13°C sea temperature

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Chatham weather in November

Expect daytime maximum temperatures of 11°C in Chatham, Massachusetts in November based on long-term weather averages. There are 5 hours of sunshine per day on average with 11 days with some rainfall and typically 111 mm of rainfall in the month.

11
11°C max day temperature
5
5 hours of sunshine per day
11
11 days with some rainfall
4
4°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
111
111 mm of monthly rainfall
2
2 (Low) UV index
10
10°C sea temperature

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Chatham weather in December

Expect daytime maximum temperatures of 6°C in Chatham, Massachusetts in December based on long-term weather averages. There are 5 hours of sunshine per day on average with 13 days with some rainfall and typically 114 mm of rainfall in the month.

6
6°C max day temperature
5
5 hours of sunshine per day
13
13 days with some rainfall
-2
-2°C min night temperature
9
9 hours of daylight per day
0
No heat & humidity
114
114 mm of monthly rainfall
1
1 (Low) UV index
7
7°C sea temperature

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