Molesey Reservoirs — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Molesey Reservoirs, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Molesey Reservoirs today is 15.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 3 | 16.4°C | 21.6°C | |
| JUN 4 | 16.4°C | 21.6°C | |
| JUN 5 | 16.5°C | 21.6°C | |
| JUN 6 | 16.5°C | 21.6°C | |
| JUN 7 | 16.3°C | 21.6°C | |
| JUN 8 | 15.2°C | 21.6°C | |
| JUN 10 | 15.2°C | 21.6°C | |
| JUN 11 | 21.6°C | 15.4°C | |
| JUN 12 | 21.6°C | 15.8°C | |
| JUN 13 | 21.6°C | 16.1°C | |
| JUN 14 | 21.6°C | 16.4°C | |
| JUN 15 | 21.6°C | 16.7°C | |
| JUN 16 | 21.6°C | 17.1°C | |
| JUN 17 | 21.6°C | 17.4°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 | 15°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 |
Molesey Reservoirs: Water Temperature by Location
Molesey Reservoirs: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
#Surrey
Molesey Reservoirs sit on the Thames floodplain in Surrey and have water temperatures that vary with the seasons and weather. In winter the surface water commonly ranges from about 2–6 °C (36–43 °F), rising through spring to roughly 6–12 °C (43–54 °F). By summer, on warm spells, surface readings can reach around 15–22 °C (59–72 °F), while autumn typically sees a cooling to approximately 8–14 °C (46–57 °F). Actual temperatures depend on depth, shading and recent weather, so mid‑season figures can differ from day to day.
Swimming in the reservoirs is generally not permitted because they form part of a working water supply and present safety risks such as cold‑water shock, underwater hazards and restricted access for maintenance. Informal or unauthorised bathing may occur but is discouraged for health and legal reasons. Visitors can still enjoy the area from the banks: popular nearby attractions include Hampton Court Palace and its gardens, the Thames towpath for walking and cycling, and green spaces like Bushy Park, plus good opportunities for birdwatching along the reservoir margins.