Henrys Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Henrys Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Henrys Lake today is 13.4°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 14 | 14.0°C | 16.8°C | |
| SEP 15 | 13.9°C | 16.8°C | |
| SEP 16 | 13.9°C | 16.8°C | |
| SEP 17 | 13.4°C | 16.8°C | |
| SEP 18 | 13.0°C | 16.8°C | |
| SEP 19 | 13.2°C | 16.8°C | |
| SEP 20 | 13.4°C | 16.8°C | |
| SEP 22 | 16.8°C | 13.6°C | |
| SEP 23 | 16.8°C | 13.7°C | |
| SEP 24 | 16.8°C | 13.9°C | |
| SEP 25 | 16.8°C | 14.1°C | |
| SEP 26 | 16.8°C | 14.3°C | |
| SEP 27 | 16.8°C | 14.4°C | |
| SEP 28 | 16.8°C | 14.6°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 | 1°C | 4°C | 6°C |
| February | 3°C | 5°C | 7°C |
| March | 3°C | 6°C | 9°C |
| April | 0°C | 4°C | 8°C |
| May | 4°C | 9°C | 14°C |
| June | 9°C | 13°C | 17°C |
| July | 13°C | 18°C | 23°C |
| August | 17°C | 20°C | 23°C |
| September | 13°C | 17°C | 21°C |
| October | 4°C | 9°C | 14°C |
| November | 3°C | 7°C | 10°C |
| December | 3°C | 7°C | 10°C |
Henrys Lake: Water Temperature by Location
Henrys Lake: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Henrys Lake is a high-elevation, spring- and snowmelt-fed lake, so its surface temperatures stay fairly cool through the year. In winter the lake commonly approaches freezing and can be ice-covered, with surface temperatures around 32–40°F (0–4°C). In spring the water warms slowly, often ranging roughly 34–50°F (1–10°C) as runoff and cool inflows persist. Peak surface temperatures on warm summer afternoons typically reach about 55–68°F (13–20°C), though shallow, sun-exposed pockets may be a few degrees warmer and deeper water stays substantially colder. During fall the lake cools back into the 40–55°F (4–13°C) range as air temperatures drop.
Swimming is generally allowed where public shoreline access exists, but it is not a typical warm-water swimming destination because of consistently cold water and frequent wind. The low temperatures increase the risk of cold-water shock and hypothermia, especially if someone is immersed for more than a few minutes, and there are few if any staffed lifeguard areas. Many visitors choose wading, short dips on warm afternoons, or watersports with exposure protection rather than prolonged swimming. As conditions vary with weather and season, swimmers should dress for cold water and use caution near boats and changing weather.