Gustavus water temp
This data the coastal Gustavus 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 Gustavus
Water temperature in Gustavus today is 49.8°F. Based on our historical data over a period of ten years, the warmest water in this day in Gustavus was recorded in 2014 and was 51.1°F, and the coldest was recorded in 2011 at 47.1°F. Sea water temperature in Gustavus is expected to drop to 47.8°F in the next 10 days. September average water temperature in Gustavus is 50.7°F, the minimum temperature is 46.9°F, and the maximum is 55.2°F.
Throughout the year, the water temperature in Gustavus does not rise above 68°F and therefore is not suitable for comfortable swimming. The average water temperature in Gustavus in winter reaches 40.8°F, in spring 41.5°F, in summer the average temperature rises to 52.5°F, and in autumn it is 46.9°F.
Gustavus water temperature now
| September 26, 2025 |
|---|
| today temp |
| 49.8°F |
| September 25, 2025 |
|---|
| yesterday temp |
| 50°F |
The ocean salinity in Gustavus is 29.72‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Gustavus 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 Gustavus. 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 Gustavus. 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 |
|---|---|---|---|
| 1' 3" | 1' 5" | 1' 5" | 1' 3" |
| 0.39 m | 0.43 m | 0.43 m | 0.39 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 1' 7" | 1' 6" | 1' 2" | 1' 3" |
| 0.48 m | 0.46 m | 0.35 m | 0.38 m |
Surf report in Gustavus
Gustavus weather forecast
Current temperature and weather
Data in a table show Gustavus temperature today (September 26, 2025). For more information and forecast for a few days, go to the weather forecast Gustavus.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 |  |  | |
| 49.8°F | 49.3°F | 48.7°F | 48.2°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 |  | |  |
| 48.7°F | 49.1°F | 47.1°F | 46.4°F |
You may also be interested in other sections of our site for Gustavus: Sunrise and Sunset, Tides
Gustavus water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Gustavus. 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 Gustavus 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 | 40.6°F | 37.8°F | 43.2°F | cold |
| Ocean water temperature in Gustavus in January | ||||
| February | 39.7°F | 36.9°F | 43.2°F | cold |
| Ocean water temperature in Gustavus in February | ||||
| March | 39.4°F | 36.1°F | 43°F | cold |
| Ocean water temperature in Gustavus in March | ||||
| April | 40.8°F | 37.6°F | 44.6°F | cold |
| Ocean water temperature in Gustavus in April | ||||
| May | 44.4°F | 40.3°F | 50°F | cold |
| Ocean water temperature in Gustavus in May | ||||
| June | 49.6°F | 45.3°F | 55°F | cold |
| Ocean water temperature in Gustavus in June | ||||
| July | 53.4°F | 47.8°F | 57.9°F | cold |
| Ocean water temperature in Gustavus in July | ||||
| August | 54.3°F | 47.5°F | 58.3°F | cold |
| Ocean water temperature in Gustavus in August | ||||
| September | 50.7°F | 46.9°F | 55.2°F | cold |
| Ocean water temperature in Gustavus in September | ||||
| October | 46.8°F | 43.2°F | 50.2°F | cold |
| Ocean water temperature in Gustavus in October | ||||
| November | 43.5°F | 40.6°F | 46.6°F | cold |
| Ocean water temperature in Gustavus in November | ||||
| December | 41.9°F | 39.4°F | 45°F | cold |
| Ocean water temperature in Gustavus in December | ||||
Chart monthly average water temperature in Gustavus
