Greenfield Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Greenfield Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Greenfield Reservoir today is 18.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 |
|---|---|---|---|
| JUL 16 | 20.1°C | 21.8°C | |
| JUL 17 | 19.2°C | 21.8°C | |
| JUL 18 | 19.2°C | 21.8°C | |
| JUL 19 | 19.2°C | 21.8°C | |
| JUL 20 | 19.2°C | 21.8°C | |
| JUL 21 | 18.9°C | 21.8°C | |
| JUL 22 | 18.9°C | 21.8°C | |
| JUL 23 | 18.9°C | 21.8°C | |
| JUL 24 | 21.8°C | 19.0°C | |
| JUL 25 | 21.8°C | 19.2°C | |
| JUL 26 | 21.8°C | 19.3°C | |
| JUL 27 | 21.8°C | 19.5°C | |
| JUL 28 | 21.8°C | 19.6°C | |
| JUL 29 | 21.8°C | 19.8°C | |
| JUL 30 | 21.8°C | 19.9°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 | 16°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 | 3°C | 8°C | 11°C |
| December | 1°C | 5°C | 8°C |
Greenfield Reservoir: Water Temperature by Location
Greenfield Reservoir: Weather Forecast
July 24
July 25
July 26
July 27
Location & Local Information
#Greater Manchester
Greenfield Reservoir in Greater Manchester sits in a steep, upland valley where the water stays relatively cold year-round. Surface temperatures typically range from about 2–6 °C (36–43 °F) in winter, rise to 5–12 °C (41–54 °F) through spring, and reach roughly 14–18 °C (57–64 °F) at the warmest points of summer; autumn usually brings them back down to around 8–12 °C (46–54 °F). Because the reservoir is part of the local water supply and is deep in places, sudden depth changes and cold temperatures can make swimming hazardous.
Officially, open-water swimming is not encouraged at Greenfield Reservoir for safety and water-quality reasons, and local authorities or the water company may restrict access. Some experienced wild swimmers do visit nearby waters when permitted, but anyone considering entering should check rules and be aware of risks. The area remains attractive for non-swimming visitors, with links into the Peak District, moorland walks across Saddleworth, riverside paths, and the village of Greenfield offering cafés and historical points of interest.