Bala Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Bala Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Bala Lake today is 18.1°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 |
|---|---|---|---|
| JUN 25 | 16.5°C | 20.3°C | |
| JUN 26 | 16.5°C | 20.3°C | |
| JUN 27 | 18.2°C | 20.3°C | |
| JUN 28 | 18.2°C | 20.3°C | |
| JUN 29 | 17.7°C | 20.3°C | |
| JUN 30 | 18.1°C | 20.3°C | |
| JUL 1 | 18.1°C | 22.0°C | |
| JUL 2 | 18.1°C | 22.0°C | |
| JUL 3 | 22.0°C | 18.3°C | |
| JUL 4 | 22.0°C | 18.5°C | |
| JUL 5 | 22.0°C | 18.7°C | |
| JUL 6 | 22.0°C | 18.9°C | |
| JUL 7 | 22.0°C | 19.1°C | |
| JUL 8 | 22.0°C | 19.3°C | |
| JUL 9 | 22.0°C | 19.5°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 | 0°C | 4°C | 7°C |
| February | 1°C | 5°C | 8°C |
| March | 3°C | 7°C | 10°C |
| April | 7°C | 11°C | 14°C |
| May | 10°C | 17°C | 23°C |
| June | 14°C | 20°C | 26°C |
| July | 17°C | 22°C | 27°C |
| August | 17°C | 22°C | 27°C |
| September | 12°C | 18°C | 23°C |
| October | 9°C | 13°C | 17°C |
| November | 4°C | 8°C | 11°C |
| December | 1°C | 5°C | 8°C |
Bala Lake: Water Temperature by Location
Bala Lake: Weather Forecast
July 3
July 4
July 5
July 6
Location & Local Information
Bala Lake, or Llyn Tegid, is the largest natural lake in Wales, set amid the stunning scenery of Snowdonia National Park. The lake's water temperature follows a distinct seasonal cycle, remaining very cold for much of the year. In winter, temperatures can drop close to the freezing point, often hovering between 3∘C and 8∘C (37∘F to 46∘F). By summer, the water warms up somewhat, typically reaching a range of 13∘C to 17∘C (55∘F to 63∘F), making it more tolerable for a brief dip but still requiring caution against cold water shock.
Open water swimming is popular and generally permitted in Bala Lake, provided swimmers take appropriate safety measures, such as using a tow float for visibility. The lake is widely used for various non-motorised watersports, including canoeing and sailing, with the area near the town being a favoured entry point. For land-based activities, visitors can enjoy the scenic journey offered by the Bala Lake Railway along the southern shore, or experience the thrills of white-water rafting nearby at the National White Water Centre on the River Tryweryn.