London Sea Temperature in September

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

Average water temperature in London for September

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

Average

27.57° C

81.63° F

High

29.1° C

84.38° F

Low

25.41° C

77.74° F

Water temperature range by day in September in London

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

Average daily water temperatures in London for September

Day	Average	Low	High
1	27.67° C	26.33° C	28.95° C
2	27.65° C	26.36° C	28.99° C
3	27.62° C	26.39° C	29.01° C
4	27.64° C	26.41° C	29.1° C
5	27.57° C	25.98° C	29.03° C
6	27.59° C	25.57° C	29.07° C
7	27.68° C	25.5° C	28.99° C
8	27.73° C	25.5° C	28.98° C
9	27.66° C	25.41° C	29° C
10	27.62° C	25.52° C	28.92° C
11	27.58° C	25.68° C	28.85° C
12	27.57° C	25.85° C	28.86° C
13	27.49° C	26.19° C	28.83° C
14	27.46° C	26.34° C	28.78° C
15	27.52° C	26.42° C	28.78° C
16	27.48° C	26.44° C	28.84° C
17	27.46° C	26.46° C	28.77° C
18	27.43° C	26.54° C	28.76° C
19	27.43° C	26.09° C	28.7° C
20	27.49° C	26.08° C	28.8° C
21	27.62° C	26.17° C	28.94° C
22	27.64° C	26.18° C	28.95° C
23	27.6° C	25.99° C	28.92° C
24	27.7° C	26.03° C	28.84° C
25	27.63° C	26.08° C	28.78° C
26	27.6° C	26.43° C	28.7° C
27	27.55° C	26.32° C	28.77° C
28	27.55° C	26.09° C	28.8° C
29	27.51° C	25.95° C	28.83° C
30	27.47° C	25.92° C	28.9° C

Water temperature in September for locations near London

Tabwakea

Republic of Kiribati, Australia and Oceania

Kiritimati

Republic of Kiribati, Australia and Oceania

Data source and citation

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