Antero Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Antero Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Antero Reservoir today is 20°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 |
|---|---|---|---|
| AUG 26 | 20.1°C | 20.0°C | |
| AUG 27 | 20.8°C | 20.0°C | |
| AUG 28 | 20.3°C | 20.0°C | |
| AUG 29 | 20.3°C | 20.0°C | |
| AUG 30 | 20.2°C | 20.0°C | |
| AUG 31 | 20.1°C | 20.0°C | |
| SEP 1 | 20.0°C | 17.0°C | |
| SEP 2 | 20.0°C | 17.0°C | |
| SEP 3 | 17.0°C | 19.9°C | |
| SEP 4 | 17.0°C | 19.7°C | |
| SEP 5 | 17.0°C | 19.6°C | |
| SEP 6 | 17.0°C | 19.4°C | |
| SEP 7 | 17.0°C | 19.3°C | |
| SEP 8 | 17.0°C | 19.1°C | |
| SEP 9 | 17.0°C | 19.0°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 | 2°C | 4°C |
| February | 0°C | 2°C | 5°C |
| March | 0°C | 3°C | 7°C |
| April | 4°C | 7°C | 10°C |
| May | 5°C | 9°C | 13°C |
| June | 10°C | 13°C | 17°C |
| July | 15°C | 20°C | 25°C |
| August | 17°C | 20°C | 23°C |
| September | 14°C | 17°C | 20°C |
| October | 5°C | 10°C | 14°C |
| November | 0°C | 5°C | 9°C |
| December | 0°C | 2°C | 5°C |
Antero Reservoir: Water Temperature by Location
Antero Reservoir: Weather Forecast
September 3
September 4
September 5
September 6
September 7
Location & Local Information
Antero Reservoir sits at high elevation in central Colorado, so its water stays cold much of the year. Typical seasonal surface temperatures are roughly: winter—around freezing (32°F / 0°C) with ice common; spring and fall—about 33–50°F (1–10°C) as melt and cooling dominate; and summer—usually the warmest period with surface readings commonly in the 50–60°F range (10–16°C), occasionally reaching the mid‑60s°F (around 18°C) on unusually warm days. Deeper water remains substantially colder year‑round, and sudden weather shifts at altitude can rapidly cool the surface.
Swimming is physically possible but there are no formal swim facilities or lifeguards at Antero Reservoir, and the cold temperatures make extended recreational swimming inadvisable. The combination of low surface temperatures, a short warm season, high‑altitude cold shock and hypothermia risk, and limited shoreline support means most visitors use the area for fishing, boating or wildlife viewing rather than long swims. Anyone choosing to enter the water should be prepared for very cold conditions and weigh safety concerns accordingly.