Farmoor Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Farmoor Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Farmoor Reservoir today is 17.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 |
|---|---|---|---|
| JUN 25 | 17.4°C | 20.3°C | |
| JUN 26 | 17.4°C | 20.3°C | |
| JUN 27 | 18.4°C | 20.3°C | |
| JUN 28 | 18.5°C | 20.3°C | |
| JUN 29 | 18.5°C | 20.3°C | |
| JUN 30 | 18.3°C | 20.3°C | |
| JUL 1 | 17.3°C | 23.1°C | |
| JUL 2 | 17.1°C | 23.1°C | |
| JUL 3 | 23.1°C | 17.4°C | |
| JUL 4 | 23.1°C | 17.7°C | |
| JUL 5 | 23.1°C | 18.0°C | |
| JUL 6 | 23.1°C | 18.3°C | |
| JUL 7 | 23.1°C | 18.6°C | |
| JUL 8 | 23.1°C | 18.9°C | |
| JUL 9 | 23.1°C | 19.2°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 | 3°C | 7°C | 10°C |
| February | 4°C | 8°C | 11°C |
| March | 6°C | 10°C | 13°C |
| April | 8°C | 13°C | 17°C |
| May | 9°C | 16°C | 22°C |
| June | 12°C | 20°C | 28°C |
| July | 17°C | 23°C | 29°C |
| August | 18°C | 23°C | 28°C |
| September | 16°C | 21°C | 26°C |
| October | 11°C | 15°C | 19°C |
| November | 5°C | 9°C | 13°C |
| December | 4°C | 8°C | 11°C |
Farmoor Reservoir: Water Temperature by Location
Farmoor Reservoir: Weather Forecast
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Location & Local Information
#Oxfordshire
Farmoor Reservoir’s water temperatures vary through the year, with surface readings typically around 4–8 °C (39–46 °F) in winter, 6–14 °C (43–57 °F) in spring, 14–22 °C (57–72 °F) in summer and 8–14 °C (46–57 °F) in autumn. Like many shallow reservoirs, temperatures can change quickly with sunshine and wind, and deeper or sheltered areas remain colder. These seasonal ranges mean the warmest, most comfortable swimming conditions are usually confined to late summer when temperatures approach the upper end of the range.
Swimming at Farmoor is not universally permitted in the same way as managed lidos; the site is a working water supply and there are safety and water-quality reasons why the water company and local authorities discourage unsupervised bathing. Nevertheless, organised open-water swimming groups operate there under controlled conditions and informal wild swimmers do visit. Beyond swimming, the area offers birdwatching and a nature reserve, pleasant riverside walks and cycle routes, and convenient access to Oxford’s historic centre for visitors wanting a broader day out.