Philadelphia Sea Temperature in September

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

Average water temperature in Philadelphia for September

The average, high, and low temperatures below should help you if you can swim in the water in Philadelphia in September.

Average

23.43° C

74.17° F

High

27.11° C

80.8° F

Low

20.09° C

68.16° F

Water temperature range by day in September in Philadelphia

The chart below shows the range of low and high temperatures by day for the month of September in Philadelphia.

Average daily water temperatures in Philadelphia for September

Day	Average	Low	High
1	24.6° C	23.13° C	26.24° C
2	24.43° C	22.48° C	25.9° C
3	24.38° C	22.84° C	26.3° C
4	24.34° C	22.76° C	26.52° C
5	24.34° C	22.93° C	27.11° C
6	24.29° C	22.91° C	26.58° C
7	24.27° C	22.68° C	26.41° C
8	24.18° C	22.32° C	26.41° C
9	23.97° C	21.04° C	26.76° C
10	23.85° C	21.84° C	26.62° C
11	23.73° C	21.68° C	26.47° C
12	23.68° C	21.55° C	26.36° C
13	23.65° C	22.07° C	26.01° C
14	23.6° C	22.27° C	25.54° C
15	23.56° C	22.05° C	24.84° C
16	23.49° C	22.23° C	24.87° C
17	23.28° C	22.01° C	24.58° C
18	23.19° C	21.84° C	24.54° C
19	23.17° C	22.08° C	24.62° C
20	23.01° C	21.95° C	24.36° C
21	22.98° C	21.76° C	24.72° C
22	22.95° C	21.25° C	24.94° C
23	22.84° C	21.08° C	24.69° C
24	22.71° C	20.73° C	24.22° C
25	22.6° C	20.52° C	24.15° C
26	22.58° C	20.49° C	24.24° C
27	22.42° C	20.64° C	24.01° C
28	22.21° C	20.35° C	23.95° C
29	22.11° C	20.22° C	23.73° C
30	21.8° C	20.09° C	23.67° C

Water temperature in September for locations near Philadelphia

Xinying

China, Asia

Penns Grove

United States, North America

Edgemoor

United States, North America

Carneys Point Township

United States, North America

Wilmington

United States, North America

New Castle

United States, North America

Delaware City

United States, North America

Sea Breeze

United States, North America

Jersey Shore

United States, North America

North East

United States, North America

Mystic Island

United States, North America

Data source and citation

Raw data for the calculations made to find the sea surface temperature in Philadelphia 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.