Trentabank Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Trentabank Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Trentabank Reservoir today is 14.1°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 | 15.8°C | 18.0°C | |
| SEP 17 | 15.9°C | 18.0°C | |
| SEP 18 | 15.4°C | 18.0°C | |
| SEP 19 | 15.1°C | 18.0°C | |
| SEP 20 | 14.5°C | 18.0°C | |
| SEP 21 | 14.8°C | 18.0°C | |
| SEP 22 | 14.7°C | 18.0°C | |
| SEP 23 | 14.1°C | 18.0°C | |
| SEP 24 | 18.0°C | 14.3°C | |
| SEP 25 | 18.0°C | 14.5°C | |
| SEP 26 | 18.0°C | 14.7°C | |
| SEP 27 | 18.0°C | 14.9°C | |
| SEP 28 | 18.0°C | 15.1°C | |
| SEP 29 | 18.0°C | 15.3°C | |
| SEP 30 | 18.0°C | 15.5°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 | 10°C | 15°C | 21°C |
| June | 13°C | 20°C | 26°C |
| July | 17°C | 22°C | 27°C |
| August | 16°C | 21°C | 26°C |
| September | 12°C | 18°C | 23°C |
| October | 9°C | 13°C | 17°C |
| November | 4°C | 8°C | 11°C |
| December | 1°C | 5°C | 8°C |
Trentabank Reservoir: Water Temperature by Location
Trentabank Reservoir: Weather Forecast
September 23
September 24
September 25
September 26
September 27
Location & Local Information
#Cheshire
Trentabank Reservoir, set in Macclesfield Forest in Cheshire, typically has cool water temperatures through the year. In winter the surface often ranges from around 0–6 °C (32–43 °F), spring and autumn commonly sit between 6–12 °C (43–54 °F), and in the warmest summer months the water may reach roughly 12–20 °C (54–68 °F), with occasional warmer spikes on prolonged hot days. As with many upland reservoirs, temperatures can be lower at depth and conditions change quickly with weather.
Open-water swimming at Trentabank is generally not permitted and is actively discouraged for safety and operational reasons. The reservoir forms part of the local water supply and is managed to protect water quality, while hidden underwater hazards, cold-water shock risk and byelaws mean organised or unsupervised swimming is not advised. Visitors tend to enjoy walking, birdwatching and picnicking around the shore and in the surrounding Macclesfield Forest, with nearby attractions including Tegg’s Nose Country Park, scenic ridge walks and the towns of Macclesfield and Bollington offering cafes and further trail access.