Haweswater Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Haweswater Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Haweswater Reservoir today is 9.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing can be used. 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 |
|---|---|---|---|
| OCT 7 | 10.7°C | 12.0°C | |
| OCT 8 | 10.6°C | 12.0°C | |
| OCT 9 | 10.6°C | 12.0°C | |
| OCT 10 | 10.0°C | 12.0°C | |
| OCT 11 | 10.3°C | 12.0°C | |
| OCT 12 | 10.2°C | 12.0°C | |
| OCT 13 | 10.1°C | 12.0°C | |
| OCT 14 | 9.5°C | 12.0°C | |
| OCT 15 | 12.0°C | 9.9°C | |
| OCT 16 | 12.0°C | 10.0°C | |
| OCT 17 | 12.0°C | 10.1°C | |
| OCT 18 | 12.0°C | 10.2°C | |
| OCT 19 | 12.0°C | 10.4°C | |
| OCT 20 | 12.0°C | 10.5°C | |
| OCT 21 | 12.0°C | 10.6°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 | 0°C | 4°C | 7°C |
| February | 0°C | 4°C | 7°C |
| March | 2°C | 6°C | 9°C |
| April | 5°C | 9°C | 12°C |
| May | 9°C | 14°C | 20°C |
| June | 12°C | 19°C | 25°C |
| July | 15°C | 21°C | 26°C |
| August | 15°C | 21°C | 26°C |
| September | 12°C | 18°C | 23°C |
| October | 8°C | 12°C | 15°C |
| November | 4°C | 8°C | 11°C |
| December | 0°C | 3°C | 7°C |
Haweswater Reservoir: Water Temperature by Location
Haweswater Reservoir: Weather Forecast
October 15
October 16
October 17
October 18
Location & Local Information
#Cumbria
Haweswater Reservoir lies high in the eastern Lake District and is a deep, cold body of water fed by upland streams. Surface temperatures vary through the year: in summer the top layer typically reaches about 10–16 °C (50–61 °F), in spring and autumn around 4–10 °C (39–50 °F), and in winter commonly falls to 2–6 °C (36–43 °F). Deeper water remains significantly colder even in summer, so cold-shock and hypothermia are real risks.
Swimming in Haweswater is generally not permitted or is strongly discouraged because the reservoir supplies drinking water and because of safety hazards such as deep cold water, submerged structures and variable currents. Although some experienced wild swimmers sometimes enter isolated spots, visitors should observe signage and the water company’s rules and avoid unsupervised bathing. The surrounding area offers excellent alternatives: the Mardale dam and valley, ridges of the High Street range and Kidsty Pike for hiking, and the nearby village of Shap for services, all providing opportunities for walking, wildlife watching and photography.