Portsmouth Sea Temperature

(Today) 2024

16.1°C / 61°F

The water will feel medium. The water will feel a bit chilly in just bathers / swimming costume. If you plan on wearing a wetsuit 4/3mm should be thick enough.

*Live data from Sandown Bay: 16.7°C / 62.1°F

Current weather

14°C / 57°F
(clear sky)
Partly cloudy
Wind
4 mph
Humidity
82%

The measurements for the water temperature in Portsmouth, England are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Portsmouth water temperature derived from many years of historical sea surface temperature data.

Portsmouth average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Portsmouth
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 7.9 7.8 7.4 8.5 10.1 12 14.3 15.6 16.4 15.1 12.7 10.2
Max °C 11.4 10.4 10 11.2 12.7 14.8 16.2 17.9 18.1 17.3 15.9 13.4
Min °F 47.6 47.1 46.4 48.3 51.2 54.7 58.5 61 62.2 60.1 56.1 51.6
Max °F 51.1 49.7 49 51 53.8 57.5 60.4 63.3 63.9 62.3 59.3 54.8

The warmest water temperature is in September with an average around 63°F / 17.2°C. The coldest month is March with an average water temperature of 47.7°F / 8.7°C.


7 day tide forecast for Portsmouth

MonTueWedThuFriSatSun
  • High 1:21am
    (4.46m)
  • Low 6:53am
    (0.94m)
  • High 1:57pm
    (4.47m)
  • Low 7:14pm
    (1.22m)
  • High 2:06am
    (4.46m)
  • Low 7:38am
    (0.91m)
  • High 2:44pm
    (4.49m)
  • Low 8:01pm
    (1.23m)
  • High 2:54am
    (4.43m)
  • Low 8:25am
    (0.93m)
  • High 3:36pm
    (4.49m)
  • Low 8:50pm
    (1.27m)
  • High 3:48am
    (4.36m)
  • Low 9:15am
    (1m)
  • High 4:32pm
    (4.46m)
  • Low 9:43pm
    (1.35m)
  • High 4:47am
    (4.28m)
  • Low 10:09am
    (1.11m)
  • High 5:30pm
    (4.42m)
  • Low 10:41pm
    (1.44m)
  • High 5:49am
    (4.19m)
  • Low 11:08am
    (1.25m)
  • High 6:29pm
    (4.36m)
  • Low 11:45pm
    (1.51m)
  • High 6:52am
    (4.12m)
  • Low 12:13pm
    (1.37m)
  • High 7:30pm
    (4.31m)
7 day tide times for Portsmouth

*These tide times are estimates based on the nearest accurate location (Portsmouth, England) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.