Greenwich Sea Temperature in July

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

Average water temperature in Greenwich for July

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

18.74° C

(65.74° F)

highest: 21.11° C (70° F)
lowest: 16.86° C (62.35° 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 July in Greenwich

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

Water temperatures for July in Greenwich in recent years

Day	2024	2023	2022	2021
1	0° C	18.14° C	20.13° C	19.07° C
2	0° C	18.09° C	19.93° C	19.17° C
3	0° C	18.24° C	19.6° C	19.17° C
4	0° C	18.36° C	19.74° C	19.16° C
5	0° C	18.44° C	19.75° C	19.21° C
6	0° C	18.56° C	19.91° C	19.29° C
7	0° C	18.63° C	19.75° C	18.85° C
8	0° C	18.58° C	19.43° C	18.72° C
9	0° C	18.49° C	19.26° C	18.72° C
10	0° C	18.39° C	19.18° C	18.78° C
11	0° C	18.31° C	19.13° C	18.83° C
12	0° C	18.25° C	19.18° C	18.75° C
13	0° C	18.25° C	19.05° C	18.89° C
14	0° C	18.2° C	18.98° C	19.36° C
15	0° C	18.17° C	18.87° C	19.34° C
16	0° C	18.09° C	18.96° C	19.36° C
17	0° C	18.1° C	18.95° C	19.25° C
18	0° C	18.2° C	18.93° C	19.02° C
19	0° C	18.35° C	19.04° C	19.15° C
20	0° C	18.42° C	19.08° C	19.15° C
21	0° C	18.29° C	19.1° C	19.14° C
22	0° C	18.23° C	19.09° C	18.97° C
23	0° C	18.26° C	18.93° C	18.87° C
24	0° C	18.14° C	18.76° C	19.15° C
25	0° C	18.35° C	18.66° C	19.29° C
26	0° C	18.36° C	18.59° C	19.12° C
27	0° C	18.45° C	18.56° C	19° C
28	0° C	18.54° C	18.44° C	18.96° C
29	0° C	18.53° C	18.29° C	19.1° C
30	0° C	18.47° C	18.19° C	19° C
31	0° C	18.3° C	18.16° C	18.72° C