Search for cities, countries, lakes and rivers
Merced River
Merced River Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in Merced 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 Merced River
47°F
TODAY
47°F
YESTERDAY
49°F
A WEEK AGO
As of today, the minimum water temperature in the Merced River ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing can be used.
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 Merced River Over the Last 30 Days
Today the water temperature in Merced River is lower than the same day in previous years. The water temperature range here in April is from 41°F to 61°F. The water temperature has decreased over the past 7 days but has increased over the past month.
The forecasted water temperature values for Merced 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 |
|---|---|---|---|
| Apr 23 | 49°F | 50°F | |
| Apr 24 | 50°F | 50°F | |
| Apr 25 | 50°F | 50°F | |
| Apr 26 | 47°F | 50°F | |
| Apr 27 | 46°F | 50°F | |
| Apr 28 | 46°F | 50°F | |
| Apr 29 | 47°F | 50°F | |
| Apr 30 | 47°F | 50°F | |
| May 1 | 56°F | 47°F | |
| May 2 | 56°F | 48°F | |
| May 3 | 56°F | 48°F | |
| May 4 | 56°F | 49°F | |
| May 5 | 56°F | 49°F | |
| May 6 | 56°F | 50°F | |
| May 7 | 56°F | 50°F | |
| May 8 | 56°F | 51°F |
Water Temperature Ranges in Merced 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 Merced River
Water Temperature in Cities and Towns on Merced River
Merced River Weather
APRIL 30
50°F / 68°F
light drizzlerain: 44% | wind: 11 mph
MAY 1
46°F / 68°F
slight rain showersrain: 44% | wind: 9 mph
MAY 2
48°F / 72°F
slight rain showersrain: 30% | wind: 9 mph
MAY 3
46°F / 68°F
dense intensity drizzlerain: 58% | wind: 7 mph
MAY 4
41°F / 50°F
light drizzlerain: 58% | wind: 4 mph
Water Temperature in Merced River: General Trends and Swimming Opportunities
Source Confluence of Merced Peak and Triple Peak Forks
• location Yosemite National Park, Madera County
• elevation 8,017 ft (2,444 m)
Mouth San Joaquin River
• location Hills Ferry, Stanislaus County
• elevation 56 ft (17 m)
Length 145 mi (233 km)
The Merced River in California is a striking natural feature, particularly as it flows through Yosemite National Park and its surrounding areas. Water temperatures in the river fluctuate significantly depending on the season and elevation. During the spring and early summer, the river is fed by snowmelt, making the water icy cold, ranging from 45°F to 55°F (7°C to 13°C). As summer progresses, lower-elevation sections of the river can warm up to more comfortable levels, typically between 60°F and 75°F (16°C to 24°C), especially in calmer stretches.
Swimming in the Merced River is a popular activity during the warmer months, particularly in calmer areas such as the sandy beaches near Yosemite Valley or further downstream in less turbulent stretches. The river’s clarity and scenic surroundings make it an inviting spot for wading, floating, and swimming, though visitors should always exercise caution due to varying currents and water levels. In spring, the river's flow can be quite swift due to snowmelt, making certain sections unsafe for swimming.
For those looking for additional water recreation, nearby lakes and reservoirs, such as Lake McClure, offer opportunities for swimming, boating, and fishing. The Merced River and its surrounding waterways provide a diverse range of options for enjoying nature and cooling off in California's warmer climate.
Geographical Location of Merced River
Frequently Asked Questions About Merced River and its Water Temperatures
What is the current water temperature in Merced River?
The water temperature today in Merced River ranges from 47°F (8.1°C) to 60°F (15.6°C).
What is the water temperature in Merced River during the summer months?
The average water temperature in Merced 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 Merced River in May?
The average water temperature in Merced River in May ranges from 46°F to 70°F (8°C to 21°C).
What is the water temperature in Merced River in September?
The average water temperature in Merced River in September is typically between 52°F to 66°F (11°C to 19°C).
Where does Merced River flow?
Merced River flows through United States (California).
Is it possible to swim in the Merced River?
Yes, it is possible to swim in the Merced River. However, conditions can vary so it's crucial to prioritize safety regarding current, temperature, and potential hazards.
What major cities are located on Merced River?
Cities along the course of Merced River include Yosemite Valley (California).