Winchester — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Winchester, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Winchester today is 20.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 | 22.1°C | 20.4°C | |
| JUL 17 | 20.9°C | 20.4°C | |
| JUL 18 | 20.9°C | 20.4°C | |
| JUL 19 | 20.9°C | 20.4°C | |
| JUL 20 | 20.9°C | 20.4°C | |
| JUL 21 | 20.3°C | 20.4°C | |
| JUL 22 | 20.3°C | 20.4°C | |
| JUL 24 | 20.4°C | 20.2°C | |
| JUL 25 | 20.4°C | 20.2°C | |
| JUL 26 | 20.4°C | 20.2°C | |
| JUL 27 | 20.4°C | 20.2°C | |
| JUL 28 | 20.4°C | 20.3°C | |
| JUL 29 | 20.4°C | 20.3°C | |
| JUL 30 | 20.4°C | 20.3°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 | 12°C | 18°C | 24°C |
| July | 15°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 |
Winchester: Weather Forecast
July 23
July 24
July 25
July 26
July 27
Location & Local Information
Winchester, a historic city in Hampshire, is closely linked with the River Itchen, a clear chalk stream that flows gently through its centre. The river maintains a relatively stable temperature throughout the year, thanks to its spring-fed source. In winter, the water typically ranges from 7–9 °C (45–48 °F), while in spring it warms slightly to around 10–12 °C (50–54 °F). During the summer, the surface temperature can reach 15–17 °C (59–63 °F), especially in calm, sunlit areas, though faster-moving sections remain cooler. By autumn, it cools again to about 10–12 °C (50–54 °F), preserving its fresh and clean quality that supports trout and other wildlife.
Swimming in the River Itchen around Winchester is allowed in certain areas, though care is needed to respect private land and nature conservation zones. The water is exceptionally clear and inviting, making it a popular location for wild swimming during the warmer months. Wetsuits are often used outside midsummer, as the river rarely feels warm. Many locals enjoy short dips near the city’s meadows and footpaths. Beyond swimming, Winchester offers rich heritage attractions such as Winchester Cathedral, Wolvesey Castle, and the scenic water meadows that inspired writers like Keats, all within easy reach of the tranquil river.