Stain Hill Reservoirs — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Stain Hill Reservoirs, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Stain Hill Reservoirs today is 20.4°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 |
|---|---|---|---|
| JUN 24 | 20.1°C | 21.5°C | |
| JUN 25 | 20.1°C | 21.5°C | |
| JUN 26 | 20.1°C | 21.5°C | |
| JUN 27 | 21.4°C | 21.5°C | |
| JUN 28 | 21.4°C | 21.5°C | |
| JUN 29 | 21.5°C | 21.5°C | |
| JUN 30 | 21.7°C | 21.5°C | |
| JUL 1 | 20.4°C | 24.0°C | |
| JUL 2 | 24.0°C | 20.6°C | |
| JUL 3 | 24.0°C | 20.8°C | |
| JUL 4 | 24.0°C | 20.9°C | |
| JUL 5 | 24.0°C | 21.1°C | |
| JUL 6 | 24.0°C | 21.3°C | |
| JUL 7 | 24.0°C | 21.5°C | |
| JUL 8 | 24.0°C | 21.7°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.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 3°C | 7°C | 10°C |
| February | 4°C | 8°C | 11°C |
| March | 6°C | 10°C | 13°C |
| April | 9°C | 13°C | 17°C |
| May | 11°C | 17°C | 22°C |
| June | 14°C | 22°C | 28°C |
| July | 19°C | 24°C | 29°C |
| August | 18°C | 23°C | 28°C |
| September | 16°C | 21°C | 26°C |
| October | 11°C | 15°C | 19°C |
| November | 5°C | 9°C | 13°C |
| December | 4°C | 8°C | 11°C |
Stain Hill Reservoirs: Water Temperature by Location
Stain Hill Reservoirs: Weather Forecast
July 2
July 3
July 4
July 5
July 6
Location & Local Information
#Surrey
Stain Hill Reservoirs sit in Surrey as still, managed bodies of water whose temperatures reflect the mild maritime climate. In winter surface temperatures commonly fall to around 4–8 °C (39–46 °F). Spring brings a gradual rise, typically 6–14 °C (43–57 °F), while summer surface highs often reach 14–22 °C (57–72 °F) on warmer spells. Autumn sees a steady cooling, generally 8–14 °C (46–57 °F). Because they are relatively shallow and linked to local water management, temperatures can change quickly with weather and wind, and actual readings vary by year and time of day.
Swimming at the reservoirs is generally not permitted or is strongly discouraged. The sites are managed as part of drinking-water infrastructure and have steep banks, submerged hazards and variable water quality, so access is restricted for safety and supply protection. Instead visitors tend to enjoy nearby riverside and countryside activities: walking and cycling routes, birdwatching along the water’s edge, and local green spaces and parks that offer safer places for recreation away from the managed reservoir basins.