Marlow — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Marlow, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Marlow today is 20.8°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 15 | 23.8°C | 20.0°C | |
| JUL 16 | 23.8°C | 20.0°C | |
| JUL 17 | 22.0°C | 20.0°C | |
| JUL 18 | 21.8°C | 20.0°C | |
| JUL 19 | 21.8°C | 20.0°C | |
| JUL 20 | 21.8°C | 20.0°C | |
| JUL 21 | 20.8°C | 20.0°C | |
| JUL 22 | 20.8°C | 20.0°C | |
| JUL 23 | 20.0°C | 20.8°C | |
| JUL 24 | 20.0°C | 20.7°C | |
| JUL 25 | 20.0°C | 20.7°C | |
| JUL 26 | 20.0°C | 20.6°C | |
| JUL 27 | 20.0°C | 20.6°C | |
| JUL 28 | 20.0°C | 20.6°C | |
| JUL 29 | 20.0°C | 20.5°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 | 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 |
Marlow: Weather Forecast
July 23
July 24
July 25
July 26
July 27
Location & Local Information
Marlow, a picturesque town in Buckinghamshire, sits on one of the most elegant and tranquil stretches of the River Thames. The river here flows gently between wooded banks and historic bridges, creating a calm and scenic environment for leisure. Water temperatures in this part of the Thames follow the seasonal rhythm typical of southern England. In winter, the river averages around 5–7°C (41–45°F), remaining cold and brisk. By spring, it begins to warm to about 10–13°C (50–55°F), reaching its peak in July and August when the water often measures 18–21°C (64–70°F). Early autumn retains mild temperatures of around 14–16°C (57–61°F) before cooling again as the season advances.
Swimming in the River Thames at Marlow is permitted and increasingly popular, particularly in summer when the water becomes comfortably warm. The river’s gentle flow and generally good water quality make it suitable for open-water swimming, though care is advised near boat traffic and deeper channels. Many locals and visitors enjoy early-morning swims or paddleboarding along the calm waters. Marlow’s riverside parks, walking trails, and historic suspension bridge add to the area’s appeal, while nearby attractions such as Higginson Park and the Chiltern Hills offer further opportunities for outdoor recreation in a serene natural setting.