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Willamette River
Willamette River Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in Willamette River, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in Willamette River
58°F
TODAY
58°F
YESTERDAY
57°F
A WEEK AGO
As of today, the minimum water temperature in the Willamette River ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear.
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.
Analysis, Historical Data, and Forecast of Water Temperature
Water Temperature Chart for Willamette River Over the Last 30 Days
Today the water temperature in Willamette River is higher than the same day in previous years. The water temperature range here in May is from 46°F to 70°F. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.
The forecasted water temperature values for Willamette River are presented in the table below.
The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.
Daily Water Temperature Chart
| Date | Current | Average | Forecast |
|---|---|---|---|
| May 18 | 57°F | 56°F | |
| May 19 | 57°F | 56°F | |
| May 20 | 57°F | 56°F | |
| May 21 | 57°F | 56°F | |
| May 22 | 57°F | 56°F | |
| May 23 | 57°F | 56°F | |
| May 24 | 58°F | 56°F | |
| May 25 | 58°F | 56°F | |
| May 26 | 56°F | 58°F | |
| May 27 | 56°F | 58°F | |
| May 28 | 56°F | 58°F | |
| May 29 | 56°F | 58°F | |
| May 30 | 56°F | 58°F | |
| May 31 | 56°F | 58°F | |
| Jun 1 | 65°F | 58°F | |
| Jun 2 | 65°F | 59°F |
Water Temperature Ranges in Willamette River by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 40°F | 48°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 42°F | 48°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 44°F | 52°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 41°F | 50°F | 61°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 70°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 57°F | 65°F | 72°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 68°F | 75°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 71°F | 73°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 64°F | 66°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 61°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 47°F | 61°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 40°F | 46°F |
Monthly Water Temperature Histogram for Willamette River
Water Temperature in Cities and Towns on Willamette River
Willamette River Weather
MAY 26
52°F / 70°F
light drizzlerain: 23% | wind: 12 mph
MAY 27
43°F / 73°F
overcastrain: 8% | wind: 9 mph
MAY 28
50°F / 84°F
overcastrain: 2% | wind: 9 mph
MAY 29
48°F / 81°F
overcastrain: 6% | wind: 11 mph
MAY 30
41°F / 75°F
overcastrain: 5% | wind: 11 mph
Water Temperature in Willamette River: General Trends and Swimming Opportunities
Source Confluence of Middle Fork Willamette River and Coast Fork Willamette River
• location near Eugene, Lane County, Oregon
Mouth Columbia River
• location Portland, Multnomah County, Oregon
Length 187 mi (301 km)
The Willamette River, which flows through Oregon, is known for its scenic beauty and recreational opportunities. During the summer months, the water temperature typically ranges from 60°F to 70°F (15°C to 21°C), making it cool but generally tolerable for swimming, especially for those who enjoy a brisk dip. The river’s water temperature can rise slightly in warmer stretches or during dry periods, but it often remains on the cooler side due to its source in the Cascade Range, where the water is fed by mountain streams and runoff.
While the Willamette River is not as widely recognized for its swimming opportunities as other bodies of water, there are some areas along its banks that offer safe spots for swimming. Popular swimming areas are typically found in calmer sections of the river, away from strong currents or boat traffic. However, swimmers should exercise caution, as the river can have unpredictable currents, especially after rainfall or in sections where the water flow is more rapid. Many people also enjoy kayaking, canoeing, or floating down the river on tubes, making the Willamette a favorite spot for outdoor water activities.
The Willamette River is surrounded by lush forests and urban parks, making it a scenic destination for outdoor enthusiasts. In addition to swimming, visitors often come to enjoy a range of other recreational activities, such as picnicking, birdwatching, and fishing. The river’s cooler waters, combined with its natural beauty and accessible locations, make it a great place for a day on the water, whether you're looking to swim, relax, or engage in other outdoor pursuits.
Geographical Location of Willamette River
Frequently Asked Questions About Willamette River and its Water Temperatures
What is the current water temperature in Willamette River?
The water temperature today in Willamette River ranges from 55°F (12.7°C) to 60°F (15.6°C).
What is the water temperature in Willamette River during the summer months?
The average water temperature in Willamette River during the summer months is typically between 65°F to 71°F (19°C to 21°C), and it can reach up to 75°F (24°C) at its warmest. However, in some years, the temperature may exceed this range.
What is the water temperature in Willamette River in May?
The average water temperature in Willamette River in May ranges from 46°F to 70°F (8°C to 21°C).
What is the water temperature in Willamette River in September?
The average water temperature in Willamette River in September is typically between 52°F to 66°F (11°C to 19°C).
Where does Willamette River flow?
Willamette River flows through United States (Oregon).
Is it possible to swim in the Willamette River?
Yes, it is possible to swim in the Willamette River. However, water conditions should be checked beforehand to ensure safety, as it can be affected by pollution.
What major cities are located on Willamette River?
Cities along the course of Willamette River include Albany (Oregon), Corvallis (Oregon), Eugene (Oregon), Salem (Oregon).