Port Lavaca water temp
This data the coastal Port Lavaca ocean 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 ocean temperature in Port Lavaca
Water temperature in Port Lavaca today is 87.6°F. Based on our historical data over a period of ten years, the warmest water in this day in Port Lavaca was recorded in 2023 and was 88°F, and the coldest was recorded in 2024 at 83.1°F. Sea water temperature in Port Lavaca is expected to drop to 83.8°F in the next 10 days. September average water temperature in Port Lavaca is 84°F, the minimum temperature is 78.6°F, and the maximum is 88.9°F.
The swimming season in Port Lavaca lasts from March to November. During those months, Port Lavaca water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Port Lavaca in winter reaches 63.5°F, in spring 72.3°F, in summer the average temperature rises to 85.3°F, and in autumn it is 78.1°F.
Port Lavaca water temperature now
| September 5, 2025 |
|---|
| today temp |
| 87.6°F |
| September 4, 2025 |
|---|
| yesterday temp |
| 87.4°F |
The ocean salinity in Port Lavaca is 29.03‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Port Lavaca 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 Port Lavaca. 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 Port Lavaca. Data in table shown for September 6, 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 |
|---|---|---|---|
| 0' 10" | 0' 10" | 0' 10" | 0' 8" |
| 0.26 m | 0.26 m | 0.25 m | 0.21 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 0' 8" | 0' 9" | 0' 11" | 0' 10" |
| 0.21 m | 0.24 m | 0.27 m | 0.26 m |
Surf report in Port Lavaca
Port Lavaca weather forecast
Current temperature and weather
Data in a table show Port Lavaca temperature today (September 6, 2025). For more information and forecast for a few days, go to the weather forecast Port Lavaca.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 |  |  | |
| 81.5°F | 80.6°F | 81.3°F | 85.6°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 | | | |
| 94.5°F | 92.8°F | 87.3°F | 82.8°F |
You may also be interested in other sections of our site for Port Lavaca: Sunrise and Sunset, Tides
Port Lavaca water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Port Lavaca. 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 Port Lavaca 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 | 62.6°F | 56.8°F | 72°F | cold |
| Ocean water temperature in Port Lavaca in January | ||||
| February | 62.4°F | 56.3°F | 69.4°F | cold |
| Ocean water temperature in Port Lavaca in February | ||||
| March | 66.6°F | 60.6°F | 77°F | cold |
| Ocean water temperature in Port Lavaca in March | ||||
| April | 72.3°F | 66.7°F | 79.7°F | warm |
| Ocean water temperature in Port Lavaca in April | ||||
| May | 78.3°F | 71.2°F | 85.8°F | hot |
| Ocean water temperature in Port Lavaca in May | ||||
| June | 84.2°F | 79.3°F | 89.2°F | hot |
| Ocean water temperature in Port Lavaca in June | ||||
| July | 85.5°F | 82°F | 88.5°F | hot |
| Ocean water temperature in Port Lavaca in July | ||||
| August | 86.4°F | 83.1°F | 90.3°F | hot |
| Ocean water temperature in Port Lavaca in August | ||||
| September | 84°F | 78.6°F | 88.9°F | hot |
| Ocean water temperature in Port Lavaca in September | ||||
| October | 78.6°F | 68.2°F | 84.9°F | hot |
| Ocean water temperature in Port Lavaca in October | ||||
| November | 71.8°F | 64.4°F | 79.3°F | warm |
| Ocean water temperature in Port Lavaca in November | ||||
| December | 65.5°F | 58.1°F | 71.6°F | cold |
| Ocean water temperature in Port Lavaca in December | ||||
Chart monthly average water temperature in Port Lavaca
