Henley-on-Thames — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Henley-on-Thames, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Henley-on-Thames today is 20°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 |
|---|---|---|---|
| AUG 11 | 21.3°C | 19.0°C | |
| AUG 12 | 21.3°C | 19.0°C | |
| AUG 13 | 21.3°C | 19.0°C | |
| AUG 14 | 23.0°C | 19.0°C | |
| AUG 15 | 23.0°C | 19.0°C | |
| AUG 16 | 22.1°C | 19.0°C | |
| AUG 17 | 22.1°C | 19.0°C | |
| AUG 18 | 20.0°C | 19.0°C | |
| AUG 19 | 19.0°C | 20.0°C | |
| AUG 20 | 19.0°C | 19.9°C | |
| AUG 21 | 19.0°C | 19.9°C | |
| AUG 22 | 19.0°C | 19.8°C | |
| AUG 23 | 19.0°C | 19.8°C | |
| AUG 24 | 19.0°C | 19.7°C | |
| AUG 25 | 19.0°C | 19.7°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 |
Henley-on-Thames: Weather Forecast
August 19
August 20
August 21
August 22
August 23
Location & Local Information
Henley-on-Thames, a riverside town in Oxfordshire, is well known for its graceful setting on the River Thames and its long association with rowing and water recreation. The river here is wide and slow-moving, flowing between green meadows and wooded banks. Water temperatures in this area follow the typical southern English pattern: in winter, the Thames averages 5–7°C (41–45°F), rising in spring to about 10–13°C (50–55°F). During the summer months, particularly in July and August, the water warms to 18–21°C (64–70°F), making it one of the more comfortable stretches of the river for outdoor activities. In early autumn, temperatures gradually fall to around 14–16°C (57–61°F), maintaining a gentle freshness well into October.
Swimming in the Thames at Henley-on-Thames is permitted and increasingly popular among open-water enthusiasts. The water is generally clean, and the current is mild, though swimmers are advised to avoid busy areas during the Henley Royal Regatta and near rowing lanes. Many residents enjoy early-morning or evening swims during warm weather, while others take to paddleboarding and kayaking along the peaceful reaches of the river. Beyond the water, Henley offers riverside walks, charming Georgian architecture, and nearby attractions such as the Chiltern Hills and the River and Rowing Museum, all contributing to its relaxed yet elegant character.