Lake Amador — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Amador, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Amador today is 18.5°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 |
|---|---|---|---|
| OCT 26 | 19.9°C | 22.2°C | |
| OCT 27 | 20.6°C | 22.2°C | |
| OCT 28 | 20.2°C | 22.2°C | |
| OCT 29 | 19.8°C | 22.2°C | |
| OCT 30 | 19.1°C | 22.2°C | |
| OCT 31 | 18.8°C | 22.2°C | |
| NOV 1 | 19.0°C | 16.0°C | |
| NOV 2 | 18.8°C | 16.0°C | |
| NOV 3 | 16.0°C | 18.4°C | |
| NOV 4 | 16.0°C | 18.3°C | |
| NOV 5 | 16.0°C | 18.1°C | |
| NOV 6 | 16.0°C | 18.0°C | |
| NOV 7 | 16.0°C | 17.9°C | |
| NOV 8 | 16.0°C | 17.8°C | |
| NOV 9 | 16.0°C | 17.6°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 | 8°C | 11°C | 13°C |
| February | 9°C | 11°C | 14°C |
| March | 9°C | 15°C | 21°C |
| April | 14°C | 18°C | 21°C |
| May | 17°C | 21°C | 25°C |
| June | 21°C | 26°C | 31°C |
| July | 24°C | 28°C | 31°C |
| August | 24°C | 28°C | 32°C |
| September | 23°C | 27°C | 31°C |
| October | 20°C | 22°C | 25°C |
| November | 11°C | 16°C | 20°C |
| December | 9°C | 12°C | 14°C |
Lake Amador: Water Temperature by Location
Lake Amador: Weather Forecast
November 3
November 4
November 5
November 6
November 7
Location & Local Information
Lake Amador, a foothill reservoir in Amador County, typically has cool to moderate surface temperatures that change through the year. During winter the water often ranges from about 45–55°F (7–13°C). In spring warming progresses and surface readings commonly sit around 50–65°F (10–18°C) depending on recent weather. Summer brings the warmest conditions, with surface temperatures most often between 65–78°F (18–26°C), although heat waves can push shallow coves a few degrees higher. In fall the lake cools again to roughly 55–68°F (13–20°C). Local factors — air temperature, recent inflow from creeks, wind, and depth-driven stratification — all influence how warm particular areas of the reservoir will feel, and deeper water stays noticeably colder year-round.
Swimming opportunities at Lake Amador are limited to designated and managed recreation areas rather than unrestricted shoreline access. Restrictions reflect the lake’s role as a reservoir, concerns about water quality and safety, and the presence of boat traffic, steep drop-offs, and cold thermoclines that can surprise swimmers. When local agencies open day-use or beach areas during warmer months, swimming is generally permitted there under posted rules; outside those areas it may be discouraged or prohibited. Visitors should follow on-site signage and agency guidance for current swimming rules and safe conditions.