Long Island Sound Water Temperature

When you’re contemplating the waves as they crash on to the shore it can be difficult to remember that Long Island is a part of New York city. This exciting island is a favourite with surfers and beach lovers, and lies in the Atlantic ocean to the east of New York Harbour.


Thanks to good transport links, you can reach Long Island from any other part of the US, and international flights make getting to the beach from further afield relatively simple. The beaches of Long Island sound are fabulous, and fans of ‘The Great Gatsby’ will adore the North Shore.

Long Island Sound is a village close to atlantic ocean. August is the month with the warmest water temperature at 73.6°F / 23.1°C. The coolest month is February with an avg. water temperature of 39°F / 3.9°C. September is the sunniest at 0in / 0mm and January the wettest month with 0.8in / 19.4mm. The average air temperature is around 73.8°F / 23.2°C, July is the hottest month in a year. January is the coolest with 28.6°F / -1.9°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.

Long Island Sound Summary

Description Value
Current water temperature 46.4 °F / 8 °C
Warmest Month Water Temperature: August with 73.6°F / 23.1°C
Coldest Month Water Temperature: February with 39°F / 3.9°C
Warmest Month Air Temperature: July with 73.8°F / 23.2°C
Coldest Month Air Temperature: January with 28.6°F / -1.9°C
Wettest Month: January with 0.8in / 19.4mm
Driest Month: September with 0in / 0mm
Highest Humidity June with 72.5%
Lowest Humidity March with 63.5%
Best Time to Visit: June, July, August, September
Climate Classification Warm-summer humid continental climate

Long Island Sound water temperature by month

atlantic ocean water temperature by month

Max. Water

Temperature (°F)

ø. Water

Temperature (°F)

Min. Water

Temperature (°F)

January

45 42.4 39.9

February

40.1 39.2 38.7

March

42.1 40.1 38.8

April

49.1 45.1 42.1

May

59.2 53.6 49.1

June

69.3 63.7 59.4

July

73.4 71.8 69.3

August

74.3 73.4 72.1

September

72.3 70.3 67.6

October

67.5 63.5 58.8

November

58.8 55.2 52

December

52 48.4 45.1

atlantic ocean water temperature by month

Max. Water

Temperature (°C)

ø. Water

Temperature (°C)

Min. Water

Temperature (°C)

January

7.2 5.8 4.4

February

4.5 4 3.7

March

5.6 4.5 3.8

April

9.5 7.3 5.6

May

15.1 12 9.5

June

20.7 17.6 15.2

July

23 22.1 20.7

August

23.5 23 22.3

September

22.4 21.3 19.8

October

19.7 17.5 14.9

November

14.9 12.9 11.1

December

11.1 9.1 7.3

August is the month with the highest water temperature at 73.6°F / 23.1°C. The month with the lowest is February with an average water temperature of 39°F / 3.9°C.

The water temperature at Long Island sound ranges from winter lows of around 35F or 1.6C in February when it is at its coldest to around 72F or 22.2C in August when it is warm enough for surfing in a surf vest and board shorts and pleasant for swimming.

The water temperature climbs steadily from the spring onwards, and South Shore in particular is a haven for surfers. You will need a wetsuit during spring and autumn, but excellent waves have made Long Island one of the most famous surfing locations in the world, and the sport is popular with locals and visitors.


Long Island Sound weather today & 14-day weather forecast

Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Apr. 13
Light shower rain
59 °F
45°F
15 °C
7°C
1mph (2km/h)
south-southwest
0in (4mm)
80 %
76%
Apr. 14
Broken clouds
57 °F
47°F
14 °C
9°C
1mph (2km/h)
east-southeast
0in (1mm)
45 %
91%
Apr. 15
Heavy rain
47 °F
43°F
8 °C
6°C
3mph (5km/h)
east
1in (13mm)
95 %
91%
Apr. 16
Overcast clouds
54 °F
41°F
12 °C
5°C
4mph (6km/h)
northwest
0in (2mm)
60 %
67%
Apr. 17
Overcast clouds
56 °F
44°F
14 °C
7°C
2mph (4km/h)
west-southwest
0in (0mm)
0 %
53%
Apr. 18
Overcast clouds
60 °F
49°F
16 °C
9°C
2mph (2km/h)
south-southwest
0in (0mm)
10 %
56%
Apr. 19
Broken clouds
62 °F
50°F
17 °C
10°C
2mph (3km/h)
west-southwest
0in (2mm)
70 %
64%
Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Apr. 20
Overcast clouds
59 °F
50°F
15 °C
10°C
2mph (3km/h)
south-southwest
0in (0mm)
0 %
59%
Apr. 21
Light shower rain
60 °F
46°F
16 °C
8°C
3mph (5km/h)
west-southwest
0in (3mm)
75 %
54%
Apr. 22
Scattered clouds
72 °F
44°F
22 °C
7°C
4mph (7km/h)
west-northwest
0in (0mm)
0 %
41%
Apr. 23
Scattered clouds
73 °F
50°F
23 °C
10°C
3mph (5km/h)
northwest
0in (0mm)
0 %
39%
Apr. 24
Scattered clouds
78 °F
56°F
25 °C
13°C
2mph (3km/h)
west
0in (0mm)
0 %
46%
Apr. 25
Broken clouds
75 °F
59°F
24 °C
15°C
2mph (4km/h)
south-southwest
0in (0mm)
0 %
50%
Apr. 26
Overcast clouds
73 °F
59°F
23 °C
15°C
2mph (4km/h)
southwest
0in (1mm)
15 %
61%
Apr. 27
Broken clouds
79 °F
61°F
26 °C
16°C
2mph (3km/h)
southwest
0in (0mm)
0 %
59%
Apr. 28
Broken clouds
75 °F
61°F
24 °C
16°C
2mph (3km/h)
southeast
0in (2mm)
35 %
72%

Long Island Sound weather by month / climate table

Max.

Temperature

°F

ø.

Temperature

°F

Min.

Temperature

(°F)

Precip.

(in)

Rainy Days

(d)

Rel. Humidity

(%)

January

40.3 28.6 17.4 0.8 1 64.9%

February

41.4 30.2 21 0.2 0 64.3%

March

52.9 37.2 24.8 0.2 1 63.5%

April

61.3 47.7 34.2 0.5 1 64.7%

May

74.5 57.6 44.8 0.5 1 71.1%

June

82 67.1 54.9 0.6 0 72.5%

July

85.3 73.8 64.9 0.1 0 68.3%

August

83.7 72.5 62.4 0.2 1 70.8%

September

79 66.4 56.7 0 0 71.9%

October

68 54.7 42.8 0.1 0 71.1%

November

59.4 44.6 34.9 0 0 69.2%

December

46.4 35.4 27.7 0.2 1 68.5%

Max.

Temperature

°C

ø.

Temperature

°C

Min.

Temperature

(°C)

Precip.

(mm)

Rainy Days

(d)

Rel. Humidity

(%)

January

4.6 -1.9 -8.1 19.4 1 64.9%

February

5.2 -1 -6.1 4 0 64.3%

March

11.6 2.9 -4 5.7 1 63.5%

April

16.3 8.7 1.2 11.9 1 64.7%

May

23.6 14.2 7.1 13.7 1 71.1%

June

27.8 19.5 12.7 14.6 0 72.5%

July

29.6 23.2 18.3 2.6 0 68.3%

August

28.7 22.5 16.9 4.4 1 70.8%

September

26.1 19.1 13.7 0 0 71.9%

October

20 12.6 6 3.1 0 71.1%

November

15.2 7 1.6 0 0 69.2%

December

8 1.9 -2.4 5 1 68.5%
The hottest avg. temperature is around 73.8°F / 23.2°C, July is the month with the highest temperature. January is the coolest with 28.6°F / -1.9°C average temperature. September is the month with the lowest precipitation of 0in / 0mm and January with the maximum precipitation in a year with 0.8in / 19.4mm.

Best time to visit Long Island

Hot summer days and excellent surf conditions make Long Island a terrific beach holiday destination. Cold winters are to be expected in the north east of the US, but thanks to its coastal location Long Island temperatures are slightly higher than other areas of New York State. Temperatures range from 35F or 2C in January to 80F or 27C in July. It is rare for temperatures to drop below 5F or -15C or rise higher than 95F or 35C. Take light clothing for summer and wrap up warmly and be ready for snow if you visit Long Island in winter.

The top attractions in Long Island

Although it is an island, the area is one of the most densely populated in New York state and its size means that there is much to discover. As well as excellent beach areas like North Shore and the Hamptons, there are plenty of picturesque towns along the coast such as Huntington Village and Port Jefferson where chic restaurants and quirky one off boutiques and stores are a delightful way to spend an afternoon.

If shopping is your thing, a visit to the Miracle Mile shopping resort in Manhasset is essential. Take a trip to the North Fork to discover the scenic wine country, or enjoy a day at Long Island’s main amusement park, Adventureland in Farmingdale.

Picture Copyright Flickr CC 2.0 RealMattKane

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