Nantucket Water Temperature

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Nantucket is a town close to Atlantic Ocean. August is the month with the highest water temperature at 67.6°F / 19.8°C.
The coldest month is February with an average water temperature of 38.1°F / 3.4°C.
June is the driest at 0in / 0mm and December the wettest month with 2.2in / 56.4mm.
With an average air temperature of 69.6°F / 20.9°C, August is the warmest month in a year. January is the coldest with 34°F / 1.1°C average air temperature.
The Climate is described as Warm-summer humid continental climate. Best time to Visit would be in June, July, August, September.

Nantucket Summary

Description Value
Current water temperature /
Warmest Month Water Temperature: August with 67.6°F / 19.8°C
Coldest Month Water Temperature: February with 38.1°F / 3.4°C
Warmest Month Air Temperature: August with 69.6°F / 20.9°C
Coldest Month Air Temperature: January with 34°F / 1.1°C
Wettest Month: December with 2.2in / 56.4mm
Driest Month: June with 0in / 0mm
Highest Humidity July with 84.1%
Lowest Humidity December with 70.7%
Best Time to Visit: June, July, August, September
Climate Classification Warm-summer humid continental climate

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Nantucket water temperature by month

Atlantic Ocean water temperature by month

Max. Water

Temperature (°F)

ø. Water

Temperature (°F)

Min. Water

Temperature (°F)

January

43 40.6 38.7

February

38.8 38.3 37.6

March

40.6 38.8 37.8

April

45.7 43 40.5

May

53.6 49.3 45.7

June

61.5 56.7 53.6

July

66.9 64.8 61.5

August

68.4 67.5 66.4

September

66.6 64.8 62.6

October

62.6 58.8 54.9

November

54.9 51.6 48.4

December

48.4 45.7 43.2

Atlantic Ocean water temperature by month

Max. Water

Temperature (°C)

ø. Water

Temperature (°C)

Min. Water

Temperature (°C)

January

6.1 4.8 3.7

February

3.8 3.5 3.1

March

4.8 3.8 3.2

April

7.6 6.1 4.7

May

12 9.6 7.6

June

16.4 13.7 12

July

19.4 18.2 16.4

August

20.2 19.7 19.1

September

19.2 18.2 17

October

17 14.9 12.7

November

12.7 10.9 9.1

December

9.1 7.6 6.2
The warmest water temperature are in August with around 67.6°F / 19.8°C. The coldest in February with an average water temperature of 38.1°F / 3.4°C.

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Nantucket weather today & 14-day weather forecast

Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Oct. 13
Overcast clouds
63 °F
60°F
17 °C
15°C
3mph (5km/h)
south-southeast
0in (0mm)
0 %
94%
Oct. 14
Broken clouds
69 °F
60°F
21 °C
16°C
4mph (6km/h)
west-southwest
0in (1mm)
20 %
91%
Oct. 15
Scattered clouds
59 °F
51°F
15 °C
10°C
3mph (5km/h)
south-southeast
0in (0mm)
0 %
73%
Oct. 16
Heavy rain
68 °F
50°F
20 °C
10°C
4mph (7km/h)
south
1in (15mm)
90 %
84%
Oct. 17
Light shower rain
54 °F
43°F
12 °C
6°C
7mph (11km/h)
northwest
0in (3mm)
55 %
67%
Oct. 18
Few clouds
58 °F
42°F
14 °C
5°C
5mph (8km/h)
west-northwest
0in (0mm)
0 %
59%
Oct. 19
Scattered clouds
60 °F
48°F
16 °C
9°C
3mph (5km/h)
southwest
0in (0mm)
0 %
70%
Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Oct. 20
Overcast clouds
60 °F
60°F
16 °C
15°C
4mph (6km/h)
west-southwest
0in (0mm)
0 %
87%
Oct. 21
Few clouds
60 °F
59°F
15 °C
15°C
4mph (6km/h)
west-southwest
0in (0mm)
0 %
88%
Oct. 22
Scattered clouds
60 °F
58°F
15 °C
14°C
3mph (4km/h)
south-southwest
0in (0mm)
0 %
81%
Oct. 23
Overcast clouds
56 °F
48°F
13 °C
9°C
4mph (7km/h)
northeast
0in (0mm)
0 %
72%
Oct. 24
Light rain
58 °F
49°F
14 °C
9°C
6mph (9km/h)
southwest
0in (9mm)
80 %
82%
Oct. 25
Light shower rain
52 °F
47°F
11 °C
9°C
6mph (10km/h)
north
0in (3mm)
55 %
68%
Oct. 26
Few clouds
53 °F
46°F
11 °C
8°C
3mph (4km/h)
west-northwest
0in (0mm)
20 %
56%
Oct. 27
Overcast clouds
62 °F
54°F
16 °C
12°C
4mph (7km/h)
southwest
0in (1mm)
25 %
79%
Oct. 28
Heavy rain
64 °F
57°F
18 °C
14°C
5mph (9km/h)
southwest
1in (20mm)
90 %
98%

Nantucket weather by month / climate table

Max.

Temperature

°F

ø.

Temperature

°F

Min.

Temperature

(°F)

Precip.

(in)

Rainy Days

(d)

Rel. Humidity

(%)

January

42.6 34 25 1.3 3 72.1%

February

41.2 34 26.6 0.8 1 70.9%

March

46.2 37.6 30.2 0.9 1 71.8%

April

51.6 44.6 37.8 0.5 3 75.9%

May

61.2 52.7 45.7 0.6 1 81.5%

June

70 61.3 54.9 0 0 84.1%

July

73.4 69.1 64.4 0 0 84.1%

August

74.1 69.6 65.3 0 0 83.2%

September

70.7 65.1 60.1 0 0 79.1%

October

64.4 56.1 46.6 0.3 0 72.9%

November

57.4 47.7 39.4 0.6 1 71.1%

December

48.9 39.9 33.4 2.2 3 70.7%

Max.

Temperature

°C

ø.

Temperature

°C

Min.

Temperature

(°C)

Precip.

(mm)

Rainy Days

(d)

Rel. Humidity

(%)

January

5.9 1.1 -3.9 34.1 3 72.1%

February

5.1 1.1 -3 21.4 1 70.9%

March

7.9 3.1 -1 23.5 1 71.8%

April

10.9 7 3.2 12.9 3 75.9%

May

16.2 11.5 7.6 14.8 1 81.5%

June

21.1 16.3 12.7 0 0 84.1%

July

23 20.6 18 0 0 84.1%

August

23.4 20.9 18.5 0 0 83.2%

September

21.5 18.4 15.6 0 0 79.1%

October

18 13.4 8.1 7.6 0 72.9%

November

14.1 8.7 4.1 15.9 1 71.1%

December

9.4 4.4 0.8 56.4 3 70.7%
The hottest avg. temperature is around 69.6°F / 20.9°C, August is the month with the highest temperature. January is the coolest with 34°F / 1.1°C average temperature. June is the month with the lowest precipitation of 0in / 0mm and December with the maximum precipitation in a year with 2.2in / 56.4mm.

Activities & POI in Nantucket

Type of Activity List
Beach Cliff Beach, Coatue Beach, South Shore, Pest House Shore, Rest House Shore, Madequecham Beach, Miacomet Beach, Nobadeer Beach, South Beach, Surfside Beach, Clean Shore, Jetties Beach, Childrens Beach
Golf Course Miacomet Golf Club
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