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 22.8°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 |
|---|---|---|---|
| AUG 5 | 24.4°C | 23.0°C | |
| AUG 6 | 22.9°C | 23.0°C | |
| AUG 7 | 22.6°C | 23.0°C | |
| AUG 8 | 22.6°C | 23.0°C | |
| AUG 9 | 22.9°C | 23.0°C | |
| AUG 10 | 22.8°C | 23.0°C | |
| AUG 11 | 22.8°C | 23.0°C | |
| AUG 12 | 22.8°C | 23.0°C | |
| AUG 13 | 23.0°C | 22.8°C | |
| AUG 14 | 23.0°C | 22.8°C | |
| AUG 15 | 23.0°C | 22.8°C | |
| AUG 16 | 23.0°C | 22.8°C | |
| AUG 17 | 23.0°C | 22.9°C | |
| AUG 18 | 23.0°C | 22.9°C | |
| AUG 19 | 23.0°C | 22.9°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 |
Molesey Reservoirs: Water Temperature by Location
Molesey Reservoirs: Weather Forecast
August 13
August 14
August 15
August 16
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.