Topaz Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Topaz Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Topaz Lake today is 21.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 30 | 24.9°C | 22.7°C | |
| AUG 31 | 24.8°C | 22.7°C | |
| SEP 1 | 25.0°C | 20.5°C | |
| SEP 2 | 25.0°C | 20.5°C | |
| SEP 3 | 22.6°C | 20.5°C | |
| SEP 4 | 21.7°C | 20.5°C | |
| SEP 5 | 21.6°C | 20.5°C | |
| SEP 6 | 21.0°C | 20.5°C | |
| SEP 7 | 20.5°C | 21.2°C | |
| SEP 8 | 20.5°C | 21.1°C | |
| SEP 9 | 20.5°C | 21.1°C | |
| SEP 10 | 20.5°C | 21.1°C | |
| SEP 11 | 20.5°C | 21.0°C | |
| SEP 12 | 20.5°C | 21.0°C | |
| SEP 13 | 20.5°C | 21.0°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 | 6°C |
| March | 0°C | 6°C | 12°C |
| April | 1°C | 6°C | 12°C |
| May | 1°C | 9°C | 18°C |
| June | 9°C | 16°C | 22°C |
| July | 16°C | 21°C | 27°C |
| August | 18°C | 23°C | 28°C |
| September | 16°C | 21°C | 25°C |
| October | 11°C | 15°C | 18°C |
| November | 6°C | 9°C | 12°C |
| December | 2°C | 5°C | 8°C |
Topaz Lake: Water Temperature by Location
Topaz Lake: Weather Forecast
September 7
September 8
September 9
September 10
September 11
Location & Local Information
Topaz Lake’s surface temperatures vary substantially through the year because it is a high‑desert reservoir. In winter the water commonly sits near freezing, about 32–40°F (0–4°C). Spring brings gradual warming with typical surface readings around 40–60°F (4–16°C) as snowmelt and cooler inflows persist. By mid to late summer the shallow, sun-warmed areas can reach roughly 65–78°F (18–26°C) on warm afternoons, though deeper water and shaded pockets remain much cooler. In autumn temperatures usually fall back into the 45–65°F (7–18°C) range as nights cool and inflows increase. Thermal stratification in summer means surface warmth can be misleading compared with colder subsurface layers.
Swimming at Topaz Lake is generally possible but informal and seasonal; there are no widespread lifeguard services, and shoreline conditions vary. Because water can be cold outside of peak summer and sudden temperature drops or deep, cold water near the shore can increase risk of shock and hypothermia, swimmers should exercise caution, enter gradually, and wear flotation if unsure. Local rules, posted signs and conditions such as boat traffic and algae should be checked before entering the water, and water recreation is usually done at one’s own risk.