Seaford — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Seaford (England, United Kingdom). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Seaford help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Seaford in the English Channel today is 18°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming.
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 Seaford has risen over the last week and month. 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 Seaford will be 17.7°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 21 | 16.7°C | 15.5°C | |
| JUN 22 | 16.4°C | 15.0°C | |
| JUN 23 | 17.0°C | 15.0°C | |
| JUN 24 | 17.3°C | 15.3°C | |
| JUN 25 | 17.1°C | 15.3°C | |
| JUN 26 | 18.1°C | 15.3°C | |
| JUN 27 | 18.2°C | 15.8°C | |
| JUN 28 | 18.0°C | 15.8°C | |
| JUN 29 | 18.3°C | 15.8°C | 18.3°C |
| JUN 30 | 14.5°C | 18.2°C | |
| JUL 1 | 16.3°C | 18.1°C | |
| JUL 2 | 15.8°C | 18.1°C | |
| JUL 3 | 16.5°C | 18.0°C | |
| JUL 4 | 17.5°C | 17.9°C | |
| JUL 5 | 17.5°C | 17.8°C | |
| JUL 6 | 18.0°C | 17.7°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Seaford is a coastal town on the English Channel in East Sussex, characterised by a long shingle beach backed by a promenade and the chalk cliffs of the South Downs. Sea temperatures here are typical for the southeast coast of England and vary markedly by season: winter averages about 6–8 °C, spring generally ranges from 8–12 °C, summer is the warmest period with water commonly between 15–19 °C, and autumn typically sees temperatures fall to around 11–15 °C. These figures are seasonal averages and can fluctuate with weather patterns, tidal state and local currents, so conditions on any given day may be cooler or slightly warmer than the norm.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 7°C | 10°C | 12°C |
| February | 5°C | 8°C | 10°C |
| March | 6°C | 8°C | 10°C |
| April | 7°C | 9°C | 12°C |
| May | 8°C | 11°C | 14°C |
| June | 11°C | 14°C | 16°C |
| July | 14°C | 16°C | 18°C |
| August | 15°C | 17°C | 19°C |
| September | 16°C | 18°C | 20°C |
| October | 14°C | 16°C | 19°C |
| November | 11°C | 14°C | 17°C |
| December | 8°C | 12°C | 15°C |
* Click on a month to view detailed water temperature data.
Seaford: Weather Forecast
June 30
July 1
July 2
Location, Beaches & Local Information
Nearby Beaches & Facilities
Kapa Beach
Seaford Bay Beach
Newhaven West Beach
Newhaven Beach
Newhaven East Beach
Hope Gap
Cuckmere Haven Beach
Newhaven West Quay Beach
Seven Sisters Beach
Swimming Conditions
Swimming around Seaford is possible and most appealing in mid to late summer when the water is at its mildest, though many locals and visitors swim year-round with wetsuits. The beach is mainly shingle, which affects entry and exit—wearing suitable footwear helps—and the shore has a gentle to moderate slope into open water rather than a sandy, sheltered bay. Water conditions can change quickly and there can be rip currents, so swimmers should heed local safety advice and signage; some nearby beaches have seasonal lifeguard patrols, but cover is not guaranteed everywhere. For a beach holiday, Seaford offers promenading, nearby amenities and easy access to coastal walks, making it a good base for combined swimming, sightseeing and outdoor activities.