Loch Katrine — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Loch Katrine, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Loch Katrine today is 13°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 |
|---|---|---|---|
| SEP 16 | 13.8°C | 17.0°C | |
| SEP 17 | 13.9°C | 17.0°C | |
| SEP 18 | 14.0°C | 17.0°C | |
| SEP 19 | 13.4°C | 17.0°C | |
| SEP 20 | 13.3°C | 17.0°C | |
| SEP 21 | 13.2°C | 17.0°C | |
| SEP 22 | 13.1°C | 17.0°C | |
| SEP 23 | 13.0°C | 17.0°C | |
| SEP 24 | 17.0°C | 13.2°C | |
| SEP 25 | 17.0°C | 13.4°C | |
| SEP 26 | 17.0°C | 13.6°C | |
| SEP 27 | 17.0°C | 13.8°C | |
| SEP 28 | 17.0°C | 14.0°C | |
| SEP 29 | 17.0°C | 14.2°C | |
| SEP 30 | 17.0°C | 14.4°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 | 3°C | 7°C |
| March | 2°C | 6°C | 9°C |
| April | 5°C | 9°C | 12°C |
| May | 8°C | 13°C | 19°C |
| June | 12°C | 20°C | 28°C |
| July | 15°C | 21°C | 27°C |
| August | 14°C | 20°C | 25°C |
| September | 11°C | 17°C | 22°C |
| October | 7°C | 11°C | 14°C |
| November | 4°C | 8°C | 11°C |
| December | 1°C | 5°C | 8°C |
Loch Katrine: Water Temperature by Location
Loch Katrine: Weather Forecast
September 23
September 24
September 25
September 26
September 27
Location & Local Information
Loch Katrine, a picturesque loch in the Trossachs, is a vital part of Scotland's infrastructure as it serves as the primary water supply for Glasgow. Consequently, while wild swimming is generally permissible under the Scottish Outdoor Access Code, it is requested that swimmers inform staff and stay clear of the routes used by the cruise boats like the historic Sir Walter Scott steamship, a practice designed to protect both public safety and water quality. The loch's water is consistently cold; typical seasonal surface temperatures range from winter lows of around 4∘C (39∘F), rising to approximately 13∘C to 15∘C (55∘F to 59∘F) in the summer months.
The deep and clear water of the loch makes for an invigorating swim, but the cold temperatures require caution, even in mid-summer. The surrounding area within the Loch Lomond and The Trossachs National Park offers many other attractions, including scenic cycling routes along the loch's northern shore, walking trails up mountains like Ben A'an and Ben Venue, and historical sites related to the legendary Rob Roy MacGregor, who was born nearby.