Newhaven — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Newhaven (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 Newhaven help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Newhaven in the English Channel today is 21°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience.
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 Newhaven 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 Newhaven will be 18.6°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 |
|---|---|---|---|
| AUG 6 | 20.8°C | 17.8°C | |
| AUG 7 | 20.5°C | 18.0°C | |
| AUG 8 | 20.6°C | 18.0°C | |
| AUG 9 | 20.5°C | 17.8°C | |
| AUG 10 | 20.4°C | 18.0°C | |
| AUG 11 | 20.7°C | 17.5°C | |
| AUG 12 | 20.9°C | 18.3°C | |
| AUG 13 | 20.7°C | 18.0°C | |
| AUG 14 | 21.0°C | 18.3°C | 21.0°C |
| AUG 15 | 16.8°C | 20.7°C | |
| AUG 16 | 17.5°C | 20.3°C | |
| AUG 17 | 17.5°C | 20.0°C | |
| AUG 18 | 17.0°C | 19.6°C | |
| AUG 19 | 17.5°C | 19.3°C | |
| AUG 20 | 17.5°C | 18.9°C | |
| AUG 21 | 16.5°C | 18.6°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
Newhaven sits on the Sussex coast at the mouth of the River Ouse, opening onto the English Channel. Sea temperatures here reflect its exposed coastal position and the changing seasons. Typical winter values are around 6–8°C, rising through spring to roughly 8–13°C. By summer, surface temperatures commonly reach between 14–20°C, with the warmest weeks occasionally touching the upper end of that range during heatwaves. In autumn the water cools back toward 12–16°C. Local conditions can vary with weather, tides and currents, and shallower areas near the shore warm and cool faster than deeper water further out, so swimmers will notice short-term fluctuations from these seasonal averages.
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 | 17°C | 20°C |
| October | 14°C | 16°C | 18°C |
| November | 11°C | 14°C | 17°C |
| December | 8°C | 12°C | 14°C |
* Click on a month to view detailed water temperature data.
Newhaven: Weather Forecast
August 15
August 16
August 17
August 18
Location, Beaches & Local Information
Nearby Beaches & Facilities
Newhaven Beach
Newhaven West Quay Beach
Newhaven West Beach
Newhaven East Beach
Kapa Beach
Seaford Bay Beach
Saltdean Beach
Hope Gap
Rottingdean Beach
Swimming Conditions
Swimming and beach holidays in and around Newhaven are oriented toward coastal, pebbly shorelines and harbour activities rather than long sandy bathing resorts. The foreshore and nearby stretches of coast offer opportunities for open-water swimming, paddle sports, sailing and walks along the cliffs and promenade. Water is most comfortable for casual bathing in the peak summer months when temperatures approach 18–20°C; outside of July and August many visitors prefer wetsuits for longer swims. Bathing areas can be affected by tidal flow and local currents, particularly at the harbour entrance, so choosing supervised sections of beach at nearby resorts during the summer and heeding local advice will make for a safer and more enjoyable sea experience.