Maidenhead — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Maidenhead, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Maidenhead today is 21.5°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 6 | 21.6°C | 19.0°C | |
| AUG 7 | 21.5°C | 19.0°C | |
| AUG 8 | 21.5°C | 19.0°C | |
| AUG 9 | 21.5°C | 19.0°C | |
| AUG 10 | 21.4°C | 19.0°C | |
| AUG 11 | 21.4°C | 19.0°C | |
| AUG 12 | 21.4°C | 19.0°C | |
| AUG 13 | 21.4°C | 19.0°C | |
| AUG 14 | 19.0°C | 21.4°C | |
| AUG 15 | 19.0°C | 21.3°C | |
| AUG 16 | 19.0°C | 21.1°C | |
| AUG 17 | 19.0°C | 21.0°C | |
| AUG 18 | 19.0°C | 20.9°C | |
| AUG 19 | 19.0°C | 20.8°C | |
| AUG 20 | 19.0°C | 20.6°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 | 2°C | 6°C | 9°C |
| February | 3°C | 7°C | 9°C |
| March | 5°C | 9°C | 11°C |
| April | 7°C | 11°C | 14°C |
| May | 9°C | 14°C | 18°C |
| June | 13°C | 19°C | 24°C |
| July | 16°C | 20°C | 25°C |
| August | 15°C | 19°C | 24°C |
| September | 13°C | 18°C | 22°C |
| October | 9°C | 13°C | 16°C |
| November | 4°C | 8°C | 11°C |
| December | 3°C | 7°C | 9°C |
Maidenhead: Weather Forecast
August 14
August 15
August 16
August 17
August 18
August 19
Location & Local Information
Maidenhead, a historic market town in Berkshire, is inextricably linked with the River Thames, which defines its beautiful riverside character, particularly around the famous Boulters Lock. The water temperature of the non-tidal Thames here fluctuates significantly by season. In winter, the river is very cold, usually ranging from about 4 to 10∘C (39 to 50∘F), while summer sees a peak, with temperatures often reaching 18 to 22∘C (64 to 72∘F), making it a viable option for experienced open water swimmers.
While the river is not formally designated for public swimming, it is not strictly prohibited in the non-tidal section by law, yet it remains dangerous and carries severe risks. These hazards include strong currents, which are common near weirs and locks, boat traffic, and low water quality due to storm sewage discharges. For safer immersion, nearby private lakes often offer controlled open water swimming sessions. Outside of the water, popular attractions include the historic Maidenhead Bridge, the charming Ray Mill Island for riverside walks, and the globally famous Windsor Castle located just a short drive away.