Southwick — Water Temperature, Sea Conditions & Trends

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Water Temperature Chart Over the Last 30 Days

Water temperature in Southwick rose over the last 30 days but fell over the last week. Currently, the sea water at this location is slightly warmer than average for this day in previous years.

According to our forecast, Water temperature in Southwick will be 14.7°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Sea Temperature Data

Annual Water Temperature Overview by Month

Monthly Water Temp Ranges

30°C

25°C

20°C

15°C

10°c

5°C

0°C

Annual Water Temperature Trend

Southwick, on the English Channel coast of England near Shoreham-by-Sea, sits alongside a mix of shingle foreshore and the sheltered waters of the River Adur estuary. Sea temperatures here reflect typical southern English Channel conditions and vary through the year. In winter months water commonly ranges from about 7°C to 9°C, rising through spring to roughly 9°C–14°C as the sea slowly warms. Peak summer temperatures in July and August tend to sit between about 15°C and 19°C, with occasional short-lived spikes toward 20°C during heatwaves. As autumn arrives temperatures usually fall back to the low-to-mid teens, around 12°C–16°C. Local factors such as tides, onshore winds and shallow estuary areas can produce short-term variations from these averages.