Nantucket Water Temperature

Nantucket is a town close to Atlantic Ocean. August is the month with the warmest water temperature at 67.6°F / 19.8°C. The coolest month is February with an avg. water temperature of 38.1°F / 3.4°C. June is the sunniest at 0in / 0mm and December the wettest month with 2.2in / 56.4mm. The average air temperature is around 69.6°F / 20.9°C, August is the hottest month in a year. January is the coolest with 34°F / 1.1°C average air temperature. Warm-summer humid continental climate would be the climate here. June, July, August, September would be the best time to visit.

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

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 hottest water temperature typically reached 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.

Nantucket weather today & 14-day weather forecast

Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Jan. 20
Light snow
38 °F
27°F
3 °C
-3°C
4mph (6km/h)
west-northwest
0in (4mm)
85 %
84%
Jan. 21
Light snow
28 °F
24°F
-2 °C
-4°C
4mph (7km/h)
west-northwest
0in (0mm)
35 %
71%
Jan. 22
Light snow
36 °F
26°F
2 °C
-4°C
3mph (5km/h)
northeast
0in (1mm)
65 %
64%
Jan. 23
Overcast clouds
37 °F
29°F
3 °C
-1°C
4mph (7km/h)
west-southwest
0in (0mm)
0 %
62%
Jan. 24
Broken clouds
35 °F
33°F
2 °C
1°C
4mph (7km/h)
north-northwest
0in (0mm)
0 %
65%
Jan. 25
Overcast clouds
43 °F
33°F
6 °C
1°C
3mph (5km/h)
south-southeast
0in (1mm)
20 %
73%
Jan. 26
Light shower rain
43 °F
39°F
6 °C
4°C
3mph (5km/h)
west-southwest
0in (2mm)
45 %
94%
Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Jan. 27
Broken clouds
38 °F
30°F
3 °C
-1°C
5mph (8km/h)
northwest
0in (0mm)
0 %
67%
Jan. 28
Scattered clouds
33 °F
28°F
1 °C
-2°C
3mph (6km/h)
northwest
0in (0mm)
0 %
52%
Jan. 29
Overcast clouds
34 °F
30°F
1 °C
-1°C
3mph (4km/h)
northwest
0in (0mm)
0 %
57%
Jan. 30
Mix snow/rain
33 °F
30°F
1 °C
-1°C
8mph (13km/h)
north-northeast
0in (1mm)
30 %
73%
Jan. 31
Broken clouds
39 °F
29°F
4 °C
-2°C
4mph (6km/h)
southeast
0in (0mm)
10 %
62%
Feb. 01
Overcast clouds
44 °F
35°F
6 °C
2°C
5mph (8km/h)
west-southwest
0in (0mm)
0 %
80%
Feb. 02
Overcast clouds
46 °F
41°F
8 °C
5°C
5mph (9km/h)
south-southwest
0in (0mm)
0 %
90%
Feb. 03
Overcast clouds
47 °F
44°F
9 °C
7°C
7mph (11km/h)
south-southwest
0in (0mm)
0 %
95%
Feb. 04
Light rain
45 °F
39°F
7 °C
4°C
7mph (11km/h)
southeast
0in (5mm)
75 %
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%
June is the month with the lowest rain of 0in / 0mm and December with the highest precipitation in a year with 2.2in / 56.4mm. The 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.

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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