Wraysbury Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Wraysbury Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Wraysbury Reservoir today is 20°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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| AUG 26 | 20.3°C | 23.0°C | |
| AUG 27 | 20.3°C | 23.0°C | |
| AUG 28 | 20.3°C | 23.0°C | |
| AUG 29 | 20.2°C | 23.0°C | |
| AUG 30 | 19.8°C | 23.0°C | |
| AUG 31 | 19.8°C | 23.0°C | |
| SEP 1 | 19.5°C | 21.0°C | |
| SEP 2 | 20.0°C | 21.0°C | |
| SEP 3 | 21.0°C | 20.1°C | |
| SEP 4 | 21.0°C | 20.1°C | |
| SEP 5 | 21.0°C | 20.2°C | |
| SEP 6 | 21.0°C | 20.2°C | |
| SEP 7 | 21.0°C | 20.3°C | |
| SEP 8 | 21.0°C | 20.3°C | |
| SEP 9 | 21.0°C | 20.4°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.
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 | 21°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 |
Wraysbury Reservoir: Water Temperature by Location
Wraysbury Reservoir: Weather Forecast
September 3
September 4
September 5
September 6
September 7
Location & Local Information
#Surrey
Wraysbury Reservoir, on the outskirts of Surrey in the Thames valley, tends to be cool year-round. Surface temperatures typically range from about 4–7 °C (39–45 °F) in winter, rising to roughly 6–12 °C (43–54 °F) in spring. By summer the water can warm to somewhere around 15–22 °C (59–72 °F), before dropping back to roughly 10–14 °C (50–57 °F) in autumn. Because it is a working reservoir supplying water and an operational body of water, open swimming is generally not permitted and is strongly discouraged for safety and legal reasons: there are hidden currents, variable depths, cold water shock risks, and water-quality protection measures that restrict unsupervised access.
Visitors who want outdoor recreation nearby will find several alternatives. The Runnymede meadows and historic memorials are a short drive away, Windsor and its parklands are close for sightseeing, and the Colne Valley regional park offers walking and cycling routes. The adjacent King George VI Reservoir and local rivers are also noted for birdwatching and angling rather than casual bathing.