Windsor — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Windsor, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Windsor today is 13.9°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 |
|---|---|---|---|
| JUN 3 | 15.1°C | 19.0°C | |
| JUN 4 | 15.1°C | 19.0°C | |
| JUN 5 | 15.1°C | 19.0°C | |
| JUN 6 | 15.1°C | 19.0°C | |
| JUN 7 | 13.9°C | 19.0°C | |
| JUN 8 | 13.9°C | 19.0°C | |
| JUN 10 | 13.9°C | 19.0°C | |
| JUN 11 | 19.0°C | 14.2°C | |
| JUN 12 | 19.0°C | 14.4°C | |
| JUN 13 | 19.0°C | 14.7°C | |
| JUN 14 | 19.0°C | 14.9°C | |
| JUN 15 | 19.0°C | 15.2°C | |
| JUN 16 | 19.0°C | 15.4°C | |
| JUN 17 | 19.0°C | 15.7°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 | 2°C | 6°C | 9°C |
| February | 3°C | 7°C | 9°C |
| March | 5°C | 9°C | 11°C |
| April | 7°C | 11°C | 14°C |
| May | 9°C | 14°C | 18°C |
| June | 13°C | 19°C | 24°C |
| July | 16°C | 20°C | 25°C |
| August | 15°C | 19°C | 24°C |
| September | 13°C | 18°C | 22°C |
| October | 9°C | 13°C | 16°C |
| November | 4°C | 8°C | 11°C |
| December | 3°C | 7°C | 9°C |
Windsor: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Windsor, a historic town on the River Thames in Berkshire, enjoys one of the river’s most scenic and tranquil stretches. The Thames here flows gently through parkland and meadows, creating ideal conditions for boating and riverside recreation. Water temperatures in this part of the river vary throughout the year with the mild southern English climate. In winter, the temperature typically averages around 5–7°C (41–45°F), rising in spring to about 10–13°C (50–55°F). During the summer months, July and August are warmest, with the water reaching 18–21°C (64–70°F) on sunny days. By early autumn, it cools again to roughly 13–15°C (55–59°F), remaining pleasant for short swims and paddling.
Swimming in the River Thames at Windsor is possible but approached with care. The water is generally clean, but swimming is not officially encouraged because of boat traffic, changing depths, and occasional strong currents near locks and weirs. Experienced wild swimmers often choose calm sections or supervised open-water events held in nearby areas. For most visitors, boating, paddleboarding, or simply enjoying the riverside walks are preferred ways to experience the water. Beyond the river, Windsor’s main attractions include Windsor Castle, Eton College, and the lush riverside parks that make the town a peaceful yet vibrant destination.