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 18.1°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 |
|---|---|---|---|
| AUG 6 | 18.4°C | 21.0°C | |
| AUG 7 | 18.4°C | 21.0°C | |
| AUG 8 | 18.4°C | 21.0°C | |
| AUG 9 | 18.4°C | 21.0°C | |
| AUG 10 | 18.1°C | 21.0°C | |
| AUG 11 | 18.1°C | 21.0°C | |
| AUG 12 | 18.1°C | 21.0°C | |
| AUG 13 | 18.1°C | 21.0°C | |
| AUG 14 | 21.0°C | 18.2°C | |
| AUG 15 | 21.0°C | 18.4°C | |
| AUG 16 | 21.0°C | 18.5°C | |
| AUG 17 | 21.0°C | 18.7°C | |
| AUG 18 | 21.0°C | 18.8°C | |
| AUG 19 | 21.0°C | 19.0°C | |
| AUG 20 | 21.0°C | 19.1°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 | 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
August 14
August 15
August 16
August 17
August 18
August 19
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.