Plymouth Sea Temperature in September

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

Average water temperature in Plymouth for September

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

16.22° C

(61.19° F)

  • highest: 18.37° C (65.07° F)
  • lowest: 14.6° C (58.28° F)

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

Water temperature range by day in September in Plymouth

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

Water temperatures for September in Plymouth in recent years

Day 2024 2023 2022 2021
1 0° C 16.95° C 17.86° C 16.75° C
2 0° C 17.28° C 17.95° C 16.57° C
3 0° C 17.28° C 17.74° C 16.38° C
4 0° C 17.45° C 17.42° C 16.4° C
5 0° C 17.2° C 17.41° C 16.47° C
6 0° C 17.45° C 17.36° C 17.15° C
7 0° C 17.73° C 17.32° C 17.2° C
8 0° C 18.05° C 17.38° C 17.21° C
9 0° C 18.11° C 17.48° C 17.19° C
10 0° C 18.37° C 17.49° C 16.89° C
11 0° C 18.2° C 17.64° C 16.86° C
12 0° C 17.86° C 17.76° C 16.88° C
13 0° C 17.61° C 17.43° C 16.96° C
14 0° C 17.48° C 17.35° C 17.1° C
15 0° C 17.45° C 17.19° C 17.25° C
16 0° C 17.46° C 16.85° C 17.24° C
17 0° C 17.35° C 16.64° C 17.22° C
18 0° C 17.18° C 16.58° C 17.09° C
19 0° C 17.09° C 16.67° C 16.91° C
20 0° C 16.75° C 16.77° C 16.76° C
21 0° C 16.62° C 16.8° C 16.84° C
22 0° C 16.54° C 16.98° C 16.8° C
23 0° C 16.42° C 17.24° C 16.58° C
24 0° C 16.35° C 17.27° C 16.38° C
25 0° C 16.26° C 17.16° C 16.51° C
26 0° C 16.27° C 16.99° C 16.25° C
27 0° C 16.32° C 16.83° C 15.94° C
28 0° C 16.34° C 16.63° C 15.85° C
29 0° C 16.32° C 16.46° C 15.78° C
30 0° C 16.48° C 16.33° C 15.74° C

Water temperature in September for locations near Plymouth

Data source and citation

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

  • "Plymouth Sea Temperature in September". SeaTemperatures.net. Accessed on April 30, 2024. http://seatemperatures.net/europe/united-kingdom/plymouth-september-temperature/.

  • "Plymouth Sea Temperature in September". SeaTemperatures.net, http://seatemperatures.net/europe/united-kingdom/plymouth-september-temperature/. Accessed 30 April, 2024

  • Plymouth Sea Temperature in September. SeaTemperatures.net. Retrieved from http://seatemperatures.net/europe/united-kingdom/plymouth-september-temperature/.