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San Jose
San Jose Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in San Jose, 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 San Jose
54°F
TODAY
55°F
YESTERDAY
54°F
A WEEK AGO
As of today, the minimum water temperature in San Jose 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 in San Jose Over the Last 30 Days
Today the water temperature in San Jose is higher than the same day in previous years. The water temperature range here in March is from 37°F to 55°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 San Jose 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 |
|---|---|---|---|
| Mar 3 | 54°F | 46°F | |
| Mar 4 | 55°F | 46°F | |
| Mar 5 | 54°F | 46°F | |
| Mar 6 | 54°F | 46°F | |
| Mar 7 | 54°F | 46°F | |
| Mar 8 | 55°F | 46°F | |
| Mar 9 | 55°F | 46°F | |
| Mar 10 | 54°F | 46°F | |
| Mar 11 | 46°F | 54°F | |
| Mar 12 | 46°F | 53°F | |
| Mar 13 | 46°F | 53°F | |
| Mar 14 | 46°F | 53°F | |
| Mar 15 | 46°F | 52°F | |
| Mar 16 | 46°F | 52°F | |
| Mar 17 | 46°F | 51°F | |
| Mar 18 | 46°F | 51°F |
Water Temperature Ranges in San Jose by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 44°F | 50°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 46°F | 54°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 46°F | 55°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 in San Jose
San Jose Weather
Water Temperature in San Jose: General Trends and Swimming Opportunities
San Jose, California, is home to several creeks, rivers, and reservoirs, providing a variety of outdoor recreational opportunities. However, the water temperatures in the city’s waterways are generally not ideal for swimming, especially in the smaller creeks and rivers. The Guadalupe River, which runs through parts of San Jose, typically has water temperatures ranging from 55°F (13°C) to 65°F (18°C) throughout the year. These cooler temperatures make it more suitable for activities like fishing, kayaking, and tubing rather than swimming, as the water can feel too cold for a comfortable dip, particularly in the cooler months.
In addition to the rivers, San Jose offers access to reservoirs like Almaden Lake and Anderson Reservoir, which are often popular for recreational use. Water temperatures in these reservoirs can be warmer, especially during the summer, reaching around 70°F (21°C) to 80°F (27°C). These warmer temperatures make them more appealing for swimming, boating, and picnicking by the water. However, public access to some of these reservoirs may be restricted, and it’s important to check the specific regulations for each location.
During the summer months, when San Jose’s air temperatures often exceed 90°F (32°C), swimming in the warmer reservoirs can provide a much-needed escape from the heat. Public pools in San Jose also offer a more controlled environment for swimming, maintaining water temperatures between 78°F (26°C) and 82°F (28°C), which is comfortable for year-round swimming. Whether in local pools or reservoirs, San Jose provides a variety of water-based activities, though natural waterways tend to offer more scenic views than ideal conditions for swimming.
Geographical Location of San Jose
Frequently Asked Questions About San Jose and its Water Temperatures
What is the current water temperature in San Jose?
The water temperature today in San Jose is 54°F (12.4°C).
What is the water temperature in San Jose during the summer months?
The average water temperature in San Jose 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 San Jose in May?
The average water temperature in San Jose in May ranges from 46°F to 70°F (8°C to 21°C).
What is the water temperature in San Jose in September?
The average water temperature in San Jose in September is typically between 52°F to 66°F (11°C to 19°C).
Is it possible to swim in any bodies of water in San Jose (United States, California), and what are the available options for doing so?
Yes, it's possible to swim in San Jose, California. The options include public swimming pools, aquatic centers, the San Tomas Aquino Creek Trail, and Almaden Lake.