River Witham — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the River Witham, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the River Witham today is 20.7°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 |
|---|---|---|---|
| AUG 6 | 20.0°C | 18.0°C | |
| AUG 7 | 19.9°C | 18.0°C | |
| AUG 8 | 19.9°C | 18.0°C | |
| AUG 9 | 19.9°C | 18.0°C | |
| AUG 10 | 20.1°C | 18.0°C | |
| AUG 11 | 20.1°C | 18.0°C | |
| AUG 12 | 20.1°C | 18.0°C | |
| AUG 13 | 20.1°C | 18.0°C | |
| AUG 14 | 18.0°C | 20.6°C | |
| AUG 15 | 18.0°C | 20.4°C | |
| AUG 16 | 18.0°C | 20.3°C | |
| AUG 17 | 18.0°C | 20.2°C | |
| AUG 18 | 18.0°C | 20.0°C | |
| AUG 19 | 18.0°C | 19.9°C | |
| AUG 20 | 18.0°C | 19.8°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 | 15°C | 19°C |
| June | 13°C | 18°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 | 7°C | 11°C |
| December | 0°C | 4°C | 8°C |
River Witham: Water Temperature by Location
River Witham: Weather Forecast
August 14
August 15
August 16
August 17
August 18
August 19
Location & Local Information
Source:
• location South Witham, Lincolnshire
• coordinates 52.755622°N 0.690858°W
• elevation 130 m (430 ft)
Mouth:
• location The Haven, Boston, Lincolnshire
• coordinates 52.964541°N 0.010042°W
• elevation 0 m (0 ft)
Length 132 km (82 mi)
The River Witham, which flows through Lincolnshire, sees a marked seasonal change in its water temperature. During the cold winter months, the water can be quite chilling, typically ranging from about 4∘C to 8∘C (39∘F to 46∘F). As summer approaches, the river warms up, particularly in slower moving sections, often settling between 16∘C and 20∘C (61∘F to 68∘F) during peak heat, a temperature range considered fresh for swimming.
Despite the occasional warmth, swimming in the River Witham is not formally encouraged due to a number of risks. Local bylaws, such as those historically in place near Brayford Pool in Lincoln, may prohibit it for safety reasons, and the river's overall water quality is a significant concern, with pollution from agricultural run-off and sewage posing potential health hazards. Consequently, other recreational activities are more popular, such as boating and cycling the adjacent Water Rail Way, a scenic route that follows the former railway line between Lincoln and Boston. Visitors to the area can also explore the historic sites in Lincoln, including the magnificent Lincoln Cathedral and Lincoln Castle.