Osterville water temp
This data the coastal Osterville sea 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 sea temperature in Osterville
Water temperature in Osterville today is 68.2°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Osterville was recorded in 2021 and was 72.3°F, and the coldest was recorded in 2008 at 63.5°F. Sea water temperature in Osterville is expected to drop to 64°F in the next 10 days. September average water temperature in Osterville is 68.9°F, the minimum temperature is 62.6°F, and the maximum is 76.8°F.
The swimming season in Osterville lasts from July to September. During those months, Osterville water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Osterville in winter reaches 39.7°F, in spring 46.2°F, in summer the average temperature rises to 69.3°F, and in autumn it is 60.8°F.
Osterville water temperature now
| September 25, 2025 |
|---|
| today temp |
| 68.2°F |
| September 24, 2025 |
|---|
| yesterday temp |
| 68.2°F |
The sea salinity in Osterville is 31.86‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Osterville 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 Osterville. 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 Osterville. Data in table shown for September 25, 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 |
|---|---|---|---|
| 1' 5" | 1' 4" | 1' 4" | 1' 4" |
| 0.42 m | 0.41 m | 0.4 m | 0.41 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 1' 8" | 1' 9" | 2' 0" | 2' 3" |
| 0.5 m | 0.53 m | 0.62 m | 0.69 m |
Surf report in Osterville
Osterville weather forecast
Current temperature and weather
Data in a table show Osterville temperature today (September 25, 2025). For more information and forecast for a few days, go to the weather forecast Osterville.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | | | |
| 63.7°F | 64°F | 64.4°F | 66.6°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 | | | |
| 68.5°F | 69.4°F | 69.8°F | 69.8°F |
You may also be interested in other sections of our site for Osterville: Sunrise and Sunset, Tides
Osterville water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Osterville. 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 Osterville 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 | 38.8°F | 31.5°F | 46.6°F | cold |
| Sea water temperature in Osterville in January | ||||
| February | 36.5°F | 30.4°F | 42.6°F | cold |
| Sea water temperature in Osterville in February | ||||
| March | 39°F | 30.7°F | 47.1°F | cold |
| Sea water temperature in Osterville in March | ||||
| April | 45.5°F | 36.3°F | 53.2°F | cold |
| Sea water temperature in Osterville in April | ||||
| May | 54°F | 46.6°F | 63.9°F | cold |
| Sea water temperature in Osterville in May | ||||
| June | 63.5°F | 55.4°F | 74.7°F | cold |
| Sea water temperature in Osterville in June | ||||
| July | 71.6°F | 62.1°F | 79.3°F | warm |
| Sea water temperature in Osterville in July | ||||
| August | 72.9°F | 64.9°F | 79.9°F | warm |
| Sea water temperature in Osterville in August | ||||
| September | 68.9°F | 62.6°F | 76.8°F | warm |
| Sea water temperature in Osterville in September | ||||
| October | 61.2°F | 54°F | 69.1°F | cold |
| Sea water temperature in Osterville in October | ||||
| November | 52.2°F | 43.5°F | 61.3°F | cold |
| Sea water temperature in Osterville in November | ||||
| December | 44.1°F | 37°F | 51.1°F | cold |
| Sea water temperature in Osterville in December | ||||
Chart monthly average water temperature in Osterville
