Loch Arkaig — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Loch Arkaig, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Loch Arkaig today is 12.3°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 | 13.3°C | 17.0°C | |
| SEP 17 | 13.1°C | 17.0°C | |
| SEP 18 | 13.1°C | 17.0°C | |
| SEP 19 | 12.9°C | 17.0°C | |
| SEP 20 | 12.7°C | 17.0°C | |
| SEP 21 | 12.6°C | 17.0°C | |
| SEP 22 | 12.5°C | 17.0°C | |
| SEP 23 | 12.3°C | 17.0°C | |
| SEP 24 | 17.0°C | 12.5°C | |
| SEP 25 | 17.0°C | 12.8°C | |
| SEP 26 | 17.0°C | 13.0°C | |
| SEP 27 | 17.0°C | 13.2°C | |
| SEP 28 | 17.0°C | 13.5°C | |
| SEP 29 | 17.0°C | 13.7°C | |
| SEP 30 | 17.0°C | 13.9°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 | 13°C | 21°C | 28°C |
| July | 15°C | 22°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 | 9°C |
Loch Arkaig: Water Temperature by Location
Loch Arkaig: Weather Forecast
September 23
September 24
September 25
September 26
September 27
Location & Local Information
Loch Arkaig is a long, narrow freshwater lake in the western Scottish Highlands, surrounded by dense pine forests and mountains near the village of Achnacarry. Its water remains cool throughout the year, reflecting the area’s maritime climate and shaded valleys. In winter, surface temperatures typically range from 3–5 °C (37–41 °F), rising slowly in spring to around 7–9 °C (45–48 °F). During summer, the water can reach 13–15 °C (55–59 °F) in calm, sunny conditions, though the deeper sections stay much colder. By autumn, the temperature usually drops again toward 9–11 °C (48–52 °F), maintaining a fresh, clear quality that defines many Highland lochs.
Swimming in Loch Arkaig is permitted and attracts those seeking peaceful, wild settings. The loch’s water is exceptionally clean, but it remains cold even in midsummer, so wetsuits are advised for comfort and safety. The surrounding hills can funnel sudden winds, so swimmers should stay close to shore. Many visitors come for short dips or combine swimming with kayaking and paddleboarding. The area is also rich in wildlife, including golden eagles and red deer. Nearby attractions include the Clan Cameron Museum, Glenfinnan Monument, and scenic forest trails leading toward Loch Lochy and the rugged landscapes of the Great Glen.