Cape Cod Sea Temperature in August

Looking to find out what the average sea water temperature in Cape Cod is for August? Find out what the lowest, highest, and average water temperatures are for Cape Cod over the past 10 years.

Average water temperature in Cape Cod for August

The average, high, and low temperatures below should help you if you can swim in the water in Cape Cod in August.

21.41° C

(70.54° F)

  • highest: 23.95° C (75.11° F)
  • lowest: 19° C (66.2° F)

Water at this temperature is very pleasant to swim in and if you tend to wear a wetsuit when swimming, you might consider removing it now to avoid the body overheating.

Water temperature range by day in August in Cape Cod

The chart below shows the range of low and high temperatures by day for the month of August in Cape Cod.

Water temperatures for August in Cape Cod in recent years

Day 2024 2023 2022 2021
1 0° C 20.65° C 21.48° C 21.24° C
2 0° C 20.61° C 21.34° C 21.44° C
3 0° C 20.35° C 21.62° C 21.91° C
4 0° C 20.3° C 22.01° C 21.92° C
5 0° C 20.46° C 22.65° C 21.51° C
6 0° C 20.7° C 22.54° C 21.86° C
7 0° C 20.77° C 22.22° C 22.05° C
8 0° C 20.67° C 22.03° C 22.4° C
9 0° C 20.58° C 21.99° C 22.51° C
10 0° C 20.52° C 21.64° C 22.68° C
11 0° C 20.54° C 20.92° C 22.71° C
12 0° C 20.93° C 20.51° C 23.11° C
13 0° C 21.03° C 20.07° C 23.68° C
14 0° C 20.96° C 19.98° C 23.79° C
15 0° C 20.51° C 20.28° C 23.89° C
16 0° C 20.04° C 20.4° C 23.95° C
17 0° C 20.14° C 20.28° C 23.66° C
18 0° C 19.97° C 19.95° C 23.59° C
19 0° C 19.81° C 20.16° C 23.3° C
20 0° C 19.88° C 20.41° C 23.03° C
21 0° C 20.01° C 20.77° C 23.12° C
22 0° C 19.86° C 20.77° C 22.75° C
23 0° C 19.96° C 21.14° C 22.03° C
24 0° C 20.21° C 21.57° C 22.22° C
25 0° C 19.8° C 22.09° C 22.74° C
26 0° C 20.31° C 22.26° C 22.97° C
27 0° C 20.17° C 22.16° C 23.48° C
28 0° C 20.1° C 21.95° C 23.13° C
29 0° C 19.99° C 22° C 22.17° C
30 0° C 20.28° C 22.16° C 22.04° C
31 0° C 20.13° C 22.28° C 22.34° C

Water temperature in August for locations near Cape Cod

Hyannis

United States, North America

1.20 miles away

Barnstable

United States, North America

2.19 miles away

Kalmus Beach

United States, North America

2.54 miles away

Centerville

United States, North America

2.89 miles away

West Yarmouth

United States, North America

3.12 miles away

Craigville Beach

United States, North America

4.01 miles away

Data source and citation

Raw data for the calculations made to find the sea surface temperature in Cape Cod comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.

The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.

If you'd like to use any of the information above in the format it is presented, please use the citation tool below.

  • "Cape Cod Sea Temperature in August". SeaTemperatures.net. Accessed on May 4, 2024. http://seatemperatures.net/north-america/united-states/cape-cod-august-temperature/.

  • "Cape Cod Sea Temperature in August". SeaTemperatures.net, http://seatemperatures.net/north-america/united-states/cape-cod-august-temperature/. Accessed 4 May, 2024

  • Cape Cod Sea Temperature in August. SeaTemperatures.net. Retrieved from http://seatemperatures.net/north-america/united-states/cape-cod-august-temperature/.