Grays — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Grays, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Grays today is 20.9°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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUL 16 | 23.8°C | 20.0°C | |
| JUL 17 | 22.1°C | 20.0°C | |
| JUL 18 | 22.0°C | 20.0°C | |
| JUL 19 | 22.0°C | 20.0°C | |
| JUL 20 | 22.0°C | 20.0°C | |
| JUL 21 | 21.0°C | 20.0°C | |
| JUL 22 | 20.9°C | 20.0°C | |
| JUL 23 | 20.9°C | 20.0°C | |
| JUL 24 | 20.0°C | 20.9°C | |
| JUL 25 | 20.0°C | 20.8°C | |
| JUL 26 | 20.0°C | 20.8°C | |
| JUL 27 | 20.0°C | 20.7°C | |
| JUL 28 | 20.0°C | 20.7°C | |
| JUL 29 | 20.0°C | 20.6°C | |
| JUL 30 | 20.0°C | 20.6°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.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 2°C | 6°C | 9°C |
| February | 3°C | 7°C | 9°C |
| March | 5°C | 9°C | 11°C |
| April | 8°C | 11°C | 14°C |
| May | 9°C | 14°C | 19°C |
| June | 14°C | 19°C | 24°C |
| July | 16°C | 20°C | 25°C |
| August | 15°C | 19°C | 24°C |
| September | 13°C | 18°C | 22°C |
| October | 9°C | 13°C | 16°C |
| November | 4°C | 8°C | 12°C |
| December | 3°C | 7°C | 9°C |
Grays: Weather Forecast
July 24
July 25
July 26
July 27
Location & Local Information
The River Thames at Grays, being part of the tidal estuary near the sea, experiences water temperatures that mirror coastal conditions. The winter minimum typically ranges from about 6 to 9∘C (43 to 48∘F), while the warmest part of the summer sees temperatures rise to approximately 16 to 19∘C (61 to 66∘F), usually peaking in August or September. This variation, influenced by the North Sea, ensures the water remains significantly cold for much of the year, even when the air is warm.
Swimming in the River Thames in the Grays area is strongly advised against and generally prohibited due to safety concerns. The Port of London Authority enforces restrictions because the river here is a busy, commercial, deep-water channel with very strong currents and fast-moving tides that pose a high risk of drowning. Furthermore, the water quality is poor, carrying risks of illness from pollution, particularly following heavy rainfall. Instead of swimming, visitors can explore local landmarks like Tilbury Fort, a historic artillery fort, or the Chafford Gorges Nature Park, a scenic reserve created from former chalk quarries.