Clear Lake water temp
This data the coastal Clear Lake water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Current water temperature in Clear Lake
Water temperature in Clear Lake today is 74.7°F. Based on our historical data over a period of ten years, the warmest water in this day in Clear Lake was recorded in 2014 and was 77°F, and the coldest was recorded in 2012 at 70°F. Water temperature in Clear Lake is expected to drop to 70.5°F in the next 10 days. September average water temperature in Clear Lake is 74.7°F, the minimum temperature is 69.1°F, and the maximum is 80.1°F.
The swimming season in Clear Lake lasts from June to October. During those months, Clear Lake water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Clear Lake in winter reaches 50°F, in spring 59.4°F, in summer the average temperature rises to 75.7°F, and in autumn it is 67.3°F.
Clear Lake water temperature now
| September 26, 2025 |
|---|
| today temp |
| 74.7°F |
| September 25, 2025 |
|---|
| yesterday temp |
| 75.2°F |
Surf Forecast in Clear Lake for today
Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Clear Lake. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Clear Lake. Data in table shown for September 26, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
| 4' 4" | 5' 9" | 6' 7" | 6' 7" |
| 1.31 m | 1.76 m | 2.01 m | 2 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 6' 3" | 6' 3" | 6' 8" | 6' 8" |
| 1.9 m | 1.91 m | 2.03 m | 2.03 m |
Surf report in Clear Lake
Clear Lake weather forecast
Current temperature and weather
Data in a table show Clear Lake temperature today (September 26, 2025). For more information and forecast for a few days, go to the weather forecast Clear Lake.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | | |  |
| 69.1°F | 66.9°F | 64.8°F | 76.3°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| | | |
| 90.3°F | 92.8°F | 87.6°F | 82.2°F |
You may also be interested in other sections of our site for Clear Lake: Sunrise and Sunset, Tides
Clear Lake water temperature by month
These figures shows the average, minimum and maximum monthly water temperature in Clear Lake. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Clear Lake on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve
| Month | Avr | Min | Max | |
|---|---|---|---|---|
| January | 48.4°F | 45.9°F | 53.4°F | cold |
| Water temperature in Clear Lake in January | ||||
| February | 50°F | 45.3°F | 54.7°F | cold |
| Water temperature in Clear Lake in February | ||||
| March | 53.4°F | 45.3°F | 60.3°F | cold |
| Water temperature in Clear Lake in March | ||||
| April | 58.8°F | 48.4°F | 68°F | cold |
| Water temperature in Clear Lake in April | ||||
| May | 66°F | 59.2°F | 72.3°F | cold |
| Water temperature in Clear Lake in May | ||||
| June | 72.1°F | 65.7°F | 78.8°F | warm |
| Water temperature in Clear Lake in June | ||||
| July | 77.5°F | 72.3°F | 82.9°F | hot |
| Water temperature in Clear Lake in July | ||||
| August | 77.7°F | 71.1°F | 81.9°F | hot |
| Water temperature in Clear Lake in August | ||||
| September | 74.7°F | 69.1°F | 80.1°F | warm |
| Water temperature in Clear Lake in September | ||||
| October | 67.8°F | 60.8°F | 74.7°F | cold |
| Water temperature in Clear Lake in October | ||||
| November | 59.5°F | 52°F | 65.8°F | cold |
| Water temperature in Clear Lake in November | ||||
| December | 51.8°F | 45.7°F | 59.7°F | cold |
| Water temperature in Clear Lake in December | ||||
Chart monthly average water temperature in Clear Lake
