River Severn — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the River Severn, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the River Severn today is 19.8°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 |
|---|---|---|---|
| JUL 16 | 20.5°C | 18.0°C | |
| JUL 17 | 20.0°C | 18.0°C | |
| JUL 18 | 20.0°C | 18.0°C | |
| JUL 19 | 20.0°C | 18.0°C | |
| JUL 20 | 20.0°C | 18.0°C | |
| JUL 21 | 19.9°C | 18.0°C | |
| JUL 22 | 19.9°C | 18.0°C | |
| JUL 23 | 19.8°C | 18.0°C | |
| JUL 24 | 18.0°C | 19.7°C | |
| JUL 25 | 18.0°C | 19.6°C | |
| JUL 26 | 18.0°C | 19.5°C | |
| JUL 27 | 18.0°C | 19.4°C | |
| JUL 28 | 18.0°C | 19.4°C | |
| JUL 29 | 18.0°C | 19.3°C | |
| JUL 30 | 18.0°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 | 0°C | 3°C | 6°C |
| February | 0°C | 4°C | 7°C |
| March | 2°C | 6°C | 9°C |
| April | 6°C | 9°C | 12°C |
| May | 9°C | 14°C | 19°C |
| June | 12°C | 17°C | 22°C |
| July | 14°C | 18°C | 23°C |
| August | 14°C | 18°C | 23°C |
| September | 10°C | 15°C | 19°C |
| October | 8°C | 11°C | 14°C |
| November | 3°C | 6°C | 9°C |
| December | 0°C | 4°C | 7°C |
River Severn: Water Temperature by Location
River Severn: Weather Forecast
July 24
July 25
July 26
July 27
Location & Local Information
Source:
• location Plynlimon, Powys, Wales
• coordinates 52.493464°N 3.734597°W
• elevation 610 m (2,000 ft)
Mouth Severn Estuary
• location Bristol Channel, United Kingdom
• elevation 0 m (0 ft)
Length 354 km (220 mi)
The River Severn, as the longest river in Great Britain, experiences significant temperature variations throughout its course, particularly in England. During the summer months (July and August), the water temperature in the lower and middle reaches of the river typically peaks, ranging from approximately 16 to 20∘C (61 to 68∘F). In contrast, winter temperatures (December to February) drop sharply, usually hovering between 4 and 8∘C (39 and 46F). This cold temperature, combined with strong currents and hidden hazards common to large, fast-flowing rivers, makes year-round swimming inherently risky.
For the most part, swimming in the River Severn is generally discouraged or prohibited outside of designated, managed areas due to safety concerns regarding strong undertows, sudden depth changes, and poor water quality in certain areas. Despite this, some popular spots may see unofficial dips, but official guidance almost always cautions against it. While the river itself is a key feature, the surrounding regions offer safer alternatives and attractions, such as the historic cities of Worcester and Gloucester, the Ironbridge Gorge World Heritage Site, and the nearby Cotswolds, providing plenty of dry-land exploration.