Walshaw Dean Reservoirs — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Walshaw Dean Reservoirs, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Walshaw Dean Reservoirs today is 12.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 | 14.0°C | 18.0°C | |
| SEP 17 | 14.1°C | 18.0°C | |
| SEP 18 | 13.7°C | 18.0°C | |
| SEP 19 | 13.4°C | 18.0°C | |
| SEP 20 | 13.4°C | 18.0°C | |
| SEP 21 | 13.1°C | 18.0°C | |
| SEP 22 | 12.9°C | 18.0°C | |
| SEP 23 | 12.4°C | 18.0°C | |
| SEP 24 | 18.0°C | 12.7°C | |
| SEP 25 | 18.0°C | 13.0°C | |
| SEP 26 | 18.0°C | 13.2°C | |
| SEP 27 | 18.0°C | 13.5°C | |
| SEP 28 | 18.0°C | 13.8°C | |
| SEP 29 | 18.0°C | 14.1°C | |
| SEP 30 | 18.0°C | 14.4°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 | 1°C | 5°C | 8°C |
| February | 1°C | 5°C | 8°C |
| March | 2°C | 6°C | 9°C |
| April | 6°C | 10°C | 13°C |
| May | 8°C | 15°C | 21°C |
| June | 12°C | 19°C | 26°C |
| July | 15°C | 21°C | 27°C |
| August | 15°C | 21°C | 26°C |
| September | 12°C | 18°C | 23°C |
| October | 9°C | 13°C | 17°C |
| November | 3°C | 8°C | 11°C |
| December | 1°C | 5°C | 8°C |
Walshaw Dean Reservoirs: Water Temperature by Location
Walshaw Dean Reservoirs: Weather Forecast
September 23
September 24
September 25
September 26
September 27
Location & Local Information
#West Yorkshire
Walshaw Dean Reservoirs sit high on the Pennine moors and the water remains cold throughout the year. Surface temperatures typically range from around 1–6°C (34–43°F) in winter, easing to roughly 4–10°C (39–50°F) in spring. In the warmest months the water may reach about 10–16°C (50–61°F), while autumn usually brings a falling range of roughly 6–11°C (43–52°F). These figures are approximate and can vary with weather, depth and water flow; even in summer the reservoirs feel bracing compared with lowland lakes.
Swimming is generally not recommended and in many cases is prohibited or strongly discouraged because the reservoirs form part of a drinking water catchment and have steep, slippery banks, cold temperatures, sudden depth changes and limited rescue access. Visitors should observe local signage and water company guidance. The area is popular for other pursuits: moorland walking, sections of the Calderdale Way and Pennine routes, and nearby villages such as Heptonstall and Hebden Bridge offer cafés, history and scenic views for day visitors.