Deal — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Deal (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 Deal help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Deal in the English Channel today is 11°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used.
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 Deal 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 Deal will be 9.4°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 |
|---|---|---|---|
| APR 10 | 10.2°C | 9.0°C | |
| APR 11 | 10.2°C | 8.8°C | |
| APR 12 | 10.3°C | 9.0°C | |
| APR 13 | 10.3°C | 9.0°C | |
| APR 14 | 10.2°C | 9.0°C | |
| APR 15 | 10.3°C | 9.0°C | |
| APR 16 | 10.2°C | 9.3°C | |
| APR 17 | 10.5°C | 9.5°C | |
| APR 18 | 10.8°C | 9.5°C | 10.8°C |
| APR 19 | 9.8°C | 10.6°C | |
| APR 20 | 8.5°C | 10.4°C | |
| APR 21 | 9.5°C | 10.2°C | |
| APR 22 | 8.8°C | 10.0°C | |
| APR 23 | 9.5°C | 9.8°C | |
| APR 24 | 8.8°C | 9.6°C | |
| APR 25 | 9.3°C | 9.4°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
Deal sits on the Kent coast of the English Channel and offers a typically temperate maritime climate that influences sea temperatures through the year. Water temperatures around Deal generally sit at about 6–8°C in the winter months (December to February), warming to roughly 8–13°C in spring (March to May). Peak warmth arrives in summer (June to August) when coastal waters commonly reach 15–19°C, with the warmest weeks occasionally pushing toward 20°C on rare occasions. In autumn (September to November) temperatures gradually fall back to around 11–15°C. These ranges reflect nearshore conditions and can vary a few degrees with weather patterns, tidal states and exposure along the shoreline.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 5°C | 8°C | 11°C |
| February | 5°C | 8°C | 10°C |
| March | 5°C | 8°C | 10°C |
| April | 7°C | 9°C | 12°C |
| May | 8°C | 11°C | 14°C |
| June | 11°C | 15°C | 17°C |
| July | 14°C | 17°C | 19°C |
| August | 16°C | 18°C | 20°C |
| September | 16°C | 18°C | 20°C |
| October | 14°C | 16°C | 19°C |
| November | 10°C | 14°C | 17°C |
| December | 6°C | 11°C | 14°C |
* Click on a month to view detailed water temperature data.
Deal: Weather Forecast
April 19
April 20
April 21
Location, Beaches & Local Information
Nearby Beaches & Facilities
Walmer Beach
Beach Oldstairs Bay
Kingsdown Beach
Sandwich Bay Beach
St Margaret's Bay Beach
Swimming Conditions
Swimming and beach holidays in Deal are shaped by that water profile and the character of the beach itself. The long shingle and pebble shoreline, combined with a historic pier and promenades, makes the area pleasant for sunbathing, coastal walks and occasional dips when conditions are favourable; the warmest, most comfortable sea swimming is typically enjoyed in July and August. Open-water swimming groups and individual sea swimmers use the bay year-round, often with wetsuits outside the main summer months, and seasonal lifeguard cover and local guidance are common during the busiest weeks. Visitors should expect a shingle entry that can be uneven underfoot and be mindful of changing tides and breezes; with sensible precautions, Deal provides a good mix of swimming opportunities alongside a classic English seaside holiday experience.