Twin Lakes — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Twin Lakes, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Twin Lakes today is 18.9°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 3 | 15.8°C | 19.0°C | |
| JUN 4 | 15.8°C | 19.0°C | |
| JUN 5 | 15.7°C | 19.0°C | |
| JUN 6 | 15.7°C | 19.0°C | |
| JUN 7 | 19.0°C | 19.0°C | |
| JUN 8 | 19.0°C | 19.0°C | |
| JUN 11 | 19.0°C | 18.9°C | |
| JUN 12 | 19.0°C | 18.9°C | |
| JUN 13 | 19.0°C | 18.9°C | |
| JUN 14 | 19.0°C | 18.9°C | |
| JUN 15 | 19.0°C | 18.9°C | |
| JUN 16 | 19.0°C | 18.9°C | |
| JUN 17 | 19.0°C | 18.9°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 | 1°C | 3°C | 6°C |
| March | 2°C | 5°C | 8°C |
| April | 4°C | 9°C | 14°C |
| May | 8°C | 15°C | 21°C |
| June | 14°C | 19°C | 24°C |
| July | 20°C | 24°C | 28°C |
| August | 21°C | 24°C | 26°C |
| September | 14°C | 19°C | 23°C |
| October | 9°C | 13°C | 17°C |
| November | 3°C | 8°C | 13°C |
| December | 0°C | 3°C | 7°C |
Twin Lakes: Water Temperature by Location
Twin Lakes: Weather Forecast
June 9
June 10
June 11
June 12
Location & Local Information
Twin Lakes in Idaho are high‑elevation, generally alpine bodies of water, so their temperatures stay cool much of the year. In winter the lakes commonly freeze over. During spring and early summer, when snowmelt feeds the basins, surface temperatures are often in the 32–45°F range (0–7°C). As the season progresses the warmest readings tend to occur in July and August, with surface temperatures typically rising into the mid‑50s to upper‑60s°F (13–20°C), and occasional shallow, sun‑exposed bays reaching around 70°F (21°C) on very warm days. By September and into early fall the water usually cools again to roughly 40–50°F (4–10°C) before freezing recommences.
Swimming is generally permitted at the Twin Lakes, but opportunities are limited by the cool water and remote conditions rather than legal prohibitions. Because of the lakes’ elevation, continuous cold inflow from streams, and often substantial depth, even summer swims can be brisk and carry a risk of cold shock or hypothermia; only short, cautious swims are typical for most visitors. There are usually no lifeguards or developed facilities, so access, safety, and any local restrictions vary by specific shoreline and agency management; many people opt for wading near shore or brief dips during the warmest weeks.