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Tenmile Lake — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in Tenmile Lake, trends, monthly ranges and the forecast for the coming days.

Siltcoos Lake, United States
Siltcoos Lake, United States © By Visitor7, CC BY-SA 3.0

Current Water Temperature

23.9°C
Today
24.1°C
Yesterday
23.8°C
A Week Ago
Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature in Tenmile Lake today is 23.9°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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

From July 11 to August 11

Table of Daily Sea Temperature Data

Date Current Average Forecast
AUG 423.8°C20.1°C
AUG 524.1°C20.1°C
AUG 623.8°C20.1°C
AUG 724.1°C20.1°C
AUG 824.1°C20.1°C
AUG 924.3°C20.1°C
AUG 1024.1°C20.1°C
AUG 1124.0°C20.1°C
AUG 1220.1°C23.7°C
AUG 1320.1°C23.5°C
AUG 1420.1°C23.3°C
AUG 1520.1°C23.1°C
AUG 1620.1°C23.0°C
AUG 1720.1°C22.8°C
AUG 1820.1°C22.6°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
January4°C8°C11°C
February5°C8°C11°C
March2°C7°C13°C
April8°C13°C17°C
May9°C13°C18°C
June14°C18°C22°C
July18°C21°C24°C
August16°C20°C25°C
September16°C18°C21°C
October12°C16°C20°C
November8°C12°C16°C
December7°C11°C14°C

Tenmile Lake: Water Temperature by Location

Tenmile Lake: Weather Forecast

August 12

° / °
fog
rain: 1% | wind:

August 13

° / °
mainly clear
rain: 0% | wind:

August 14

° / °
overcast
rain: 0% | wind:

August 15

° / °
overcast
rain: 1% | wind:

August 16

° / °
overcast
rain: 1% | wind:

Location & Local Information

Tenmile Lake’s surface temperatures vary considerably through the year and are strongly influenced by coastal weather, wind, and lake depth. In winter the water is typically quite cold, often in the upper 30s to upper 40s °F (about 3–9 °C). Spring brings a gradual rise, with surface readings commonly between the mid-40s and around 60 °F (7–16 °C). Peak summer surface temperatures tend to range roughly from the low 60s to the low 70s °F (16–22 °C) on warm, calm days, though deeper water remains colder. By fall the lake cools again, with surface values generally falling into the 50s to low 60s °F (10–17 °C). Short-term swings can be large after storms or heat spells, and thermal stratification means subsurface temperatures are usually several degrees lower than the surface.

Swimming at Tenmile Lake is allowed and is a common recreational use, particularly at popular shorelines and designated access points, but it is subject to the usual safety and health considerations. Lifeguards are not typically on duty, boat traffic and submerged vegetation present hazards, and cold water—even in summer—can cause shock or rapid loss of body heat. Occasional water-quality advisories for bacteria or algal blooms can close swimming areas, so visitors should heed posted signs and local guidance, enter gradually to gauge temperature, and follow standard lake-safety practices.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Tenmile Lake?
Water Temperature in Tenmile Lake today is 23.9°C.
What is the water temperature in Tenmile Lake during the summer months?
The water temperature in Tenmile Lake in summer fluctuates in the range of 14°C - 25°C.
Is it possible to swim in Tenmile Lake and what are the possibilities for this?
Yes, it is possible to swim in Tenmile Lake, Oregon. The lake offers several public access points along with private resorts and campgrounds for both daytime and overnight visitors.