Queen Mother Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Queen Mother Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Queen Mother Reservoir today is 19.9°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 |
|---|---|---|---|
| JUN 23 | 19.6°C | 21.4°C | |
| JUN 24 | 19.7°C | 21.4°C | |
| JUN 25 | 19.8°C | 21.4°C | |
| JUN 26 | 19.8°C | 21.4°C | |
| JUN 27 | 21.0°C | 21.4°C | |
| JUN 28 | 21.0°C | 21.4°C | |
| JUN 29 | 21.1°C | 21.4°C | |
| JUN 30 | 21.2°C | 21.4°C | |
| JUL 1 | 24.0°C | 20.1°C | |
| JUL 2 | 24.0°C | 20.3°C | |
| JUL 3 | 24.0°C | 20.5°C | |
| JUL 4 | 24.0°C | 20.7°C | |
| JUL 5 | 24.0°C | 20.9°C | |
| JUL 6 | 24.0°C | 21.1°C | |
| JUL 7 | 24.0°C | 21.3°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 | 10°C | 16°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 | 4°C | 9°C | 13°C |
| December | 4°C | 8°C | 11°C |
Queen Mother Reservoir: Water Temperature by Location
Queen Mother Reservoir: Weather Forecast
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Location & Local Information
#Surrey
Surface temperatures at Queen Mother Reservoir vary through the year. In spring (March–May) the water usually sits between about 6–12 °C (43–54 °F) as the body of water slowly warms. Summer months (June–August) bring the warmest surface readings, commonly 15–22 °C (59–72 °F) and occasionally a little higher during heatwaves. Autumn (September–November) sees a gradual cooling back to roughly 8–15 °C (46–59 °F), while in winter (December–February) temperatures often fall to around 2–6 °C (36–43 °F), with the deepest water remaining cold year-round.
Open swimming is generally not allowed at Queen Mother Reservoir because it is a working drinking-water reservoir and access is restricted for safety and water-quality protection. Cold-water shock, hidden depths, shoreline infrastructure and boat activity also make unsupervised swimming hazardous. Occasionally, organised, supervised activities may be permitted with prior authorisation, but casual bathing is prohibited. The reservoir sits within easy reach of attractions such as Thorpe Park, Windsor Great Park and Virginia Water, and local riverside and country walks around Chertsey and Staines make the area popular for visitors and walkers.