Slough — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Slough, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Slough today is 17°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 |
|---|---|---|---|
| SEP 16 | 18.5°C | 20.0°C | |
| SEP 17 | 18.6°C | 20.0°C | |
| SEP 18 | 18.5°C | 20.0°C | |
| SEP 19 | 18.3°C | 20.0°C | |
| SEP 20 | 17.4°C | 20.0°C | |
| SEP 21 | 18.2°C | 20.0°C | |
| SEP 22 | 17.7°C | 20.0°C | |
| SEP 23 | 17.0°C | 20.0°C | |
| SEP 24 | 20.0°C | 17.2°C | |
| SEP 25 | 20.0°C | 17.3°C | |
| SEP 26 | 20.0°C | 17.5°C | |
| SEP 27 | 20.0°C | 17.6°C | |
| SEP 28 | 20.0°C | 17.8°C | |
| SEP 29 | 20.0°C | 17.9°C | |
| SEP 30 | 20.0°C | 18.1°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 | 8°C | 13°C | 16°C |
| May | 10°C | 16°C | 21°C |
| June | 14°C | 21°C | 27°C |
| July | 18°C | 23°C | 28°C |
| August | 17°C | 22°C | 27°C |
| September | 15°C | 20°C | 25°C |
| October | 11°C | 15°C | 18°C |
| November | 4°C | 9°C | 13°C |
| December | 4°C | 8°C | 11°C |
Slough: Weather Forecast
September 23
September 24
September 25
September 26
September 27
Location & Local Information
Slough's proximity to the River Thames and the Jubilee River means the town is near significant bodies of water, but these are generally very cold. The seasonal water temperature ranges for local rivers and lakes typically fall between approximately 5∘C to 10∘C (41∘F to 50∘F) in the winter, rising to a slightly more manageable but still cool 16∘C to 20∘C (61∘F to 68∘F) during the warmest summer weeks.
Swimming in the Jubilee River, which is a flood relief channel, is actively discouraged and often prohibited by local authorities due to strong currents, unseen obstacles beneath the surface, and the severe risk of cold water shock, which can affect even strong swimmers. For safe open water activities, local residents use organised, lifeguarded swimming lakes a short drive away, such as Bray Lake or Taplow Lakeside, where safety measures are strictly enforced. Slough itself is known for its major business park and has easy access to historical attractions like Windsor Castle and the scenic landscapes of the Chiltern Hills.