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 12.4°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 | 13.6°C | 18.3°C | |
| JUN 4 | 13.0°C | 18.3°C | |
| JUN 5 | 13.0°C | 18.3°C | |
| JUN 6 | 13.0°C | 18.3°C | |
| JUN 7 | 12.5°C | 18.3°C | |
| JUN 8 | 12.5°C | 18.3°C | |
| JUN 10 | 12.4°C | 18.3°C | |
| JUN 11 | 18.3°C | 12.7°C | |
| JUN 12 | 18.3°C | 13.0°C | |
| JUN 13 | 18.3°C | 13.3°C | |
| JUN 14 | 18.3°C | 13.6°C | |
| JUN 15 | 18.3°C | 13.9°C | |
| JUN 16 | 18.3°C | 14.2°C | |
| JUN 17 | 18.3°C | 14.5°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 | 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 |
Winchester: Weather Forecast
June 9
June 10
June 11
June 12
June 13
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.