Dorena Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Dorena Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Dorena Lake 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 |
|---|---|---|---|
| SEP 14 | 19.9°C | 20.1°C | |
| SEP 15 | 19.7°C | 20.1°C | |
| SEP 16 | 19.6°C | 20.1°C | |
| SEP 17 | 19.1°C | 20.1°C | |
| SEP 18 | 18.4°C | 20.1°C | |
| SEP 19 | 18.9°C | 20.1°C | |
| SEP 20 | 18.9°C | 20.1°C | |
| SEP 21 | 18.9°C | 20.1°C | |
| SEP 22 | 20.1°C | 19.0°C | |
| SEP 23 | 20.1°C | 19.0°C | |
| SEP 24 | 20.1°C | 19.1°C | |
| SEP 25 | 20.1°C | 19.1°C | |
| SEP 26 | 20.1°C | 19.2°C | |
| SEP 27 | 20.1°C | 19.3°C | |
| SEP 28 | 20.1°C | 19.3°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 | 7°C |
| February | 0°C | 4°C | 8°C |
| March | 1°C | 6°C | 10°C |
| April | 8°C | 12°C | 15°C |
| May | 12°C | 17°C | 21°C |
| June | 14°C | 19°C | 23°C |
| July | 16°C | 21°C | 26°C |
| August | 16°C | 22°C | 27°C |
| September | 18°C | 20°C | 23°C |
| October | 10°C | 14°C | 18°C |
| November | 4°C | 8°C | 12°C |
| December | 4°C | 7°C | 11°C |
Dorena Lake: Water Temperature by Location
Dorena Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Dorena Lake, a reservoir on the Row River in western Oregon, experiences a typical seasonal cycle for low-elevation Willamette Valley waters. Surface temperatures in winter commonly range from about 40–50°F (4–10°C), keeping the water quite cold for prolonged immersion. Spring sees a gradual warming to roughly 50–65°F (10–18°C) as air temperatures rise and inflows moderate. Peak summer surface temperatures generally fall between 65–78°F (18–26°C), making the shallower, protected coves pleasant for brief swims on warm afternoons. In fall the surface cools back to near 55–68°F (13–20°C) before winter turnover returns the lake to colder conditions.
Swimming is permitted at Dorena Lake as part of its recreational use, but it is informal rather than lifeguarded and subject to common reservoir hazards. Visitors should avoid areas close to the dam, boat ramps and heavy boat traffic, and be aware that deeper water remains much colder than the surface—thermoclines and sudden releases can produce cold, dangerous currents. Because the lake is managed for multiple uses, water levels and quality can change seasonally, so swimmers are advised to exercise caution, wear flotation when appropriate and heed posted rules or temporary closures.