Union Pier water temp
This data the coastal Union Pier 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 Union Pier
Water temperature in Union Pier today is 71.4°F. Based on our historical data over a period of ten years, the warmest water in this day in Union Pier was recorded in 2018 and was 75.2°F, and the coldest was recorded in 2017 at 66.6°F. Water temperature in Union Pier is expected to drop to 69.1°F in the next 10 days. September average water temperature in Union Pier is 69.1°F, the minimum temperature is 62.6°F, and the maximum is 75.4°F.
The swimming season in Union Pier lasts from July to September. During those months, Union Pier water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Union Pier in winter reaches 38.1°F, in spring 43.5°F, in summer the average temperature rises to 70°F, and in autumn it is 59.9°F.
Union Pier water temperature now
| September 5, 2025 |
|---|
| today temp |
| 71.4°F |
| September 4, 2025 |
|---|
| yesterday temp |
| 71.8°F |
Surf Forecast in Union Pier 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 Union Pier. 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 Union Pier. Data in table shown for September 5, 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' 4" | 1' 6" | 2' 2" | 2' 7" |
| 0.41 m | 0.45 m | 0.67 m | 0.8 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 3' 3" | 3' 6" | 3' 2" | 3' 1" |
| 1 m | 1.06 m | 0.97 m | 0.93 m |
Surf report in Union Pier
Union Pier weather forecast
Current temperature and weather
Data in a table show Union Pier temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Union Pier.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | |  |  |
| 55.9°F | 56.3°F | 59.7°F | 62.6°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
|  | | |
| 64.6°F | 65.1°F | 68.5°F | 63.1°F |
You may also be interested in other sections of our site for Union Pier: Sunrise and Sunset, Tides
Union Pier water temperature by month
These figures shows the average, minimum and maximum monthly water temperature in Union Pier. 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 Union Pier 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 | 37°F | 31.5°F | 42.6°F | cold |
| Water temperature in Union Pier in January | ||||
| February | 34.9°F | 30.9°F | 39.6°F | cold |
| Water temperature in Union Pier in February | ||||
| March | 36.1°F | 31.5°F | 45.9°F | cold |
| Water temperature in Union Pier in March | ||||
| April | 42.1°F | 33.1°F | 50.5°F | cold |
| Water temperature in Union Pier in April | ||||
| May | 52.5°F | 42.1°F | 68.2°F | cold |
| Water temperature in Union Pier in May | ||||
| June | 64.4°F | 54°F | 73.9°F | cold |
| Water temperature in Union Pier in June | ||||
| July | 72.5°F | 63.7°F | 79.5°F | warm |
| Water temperature in Union Pier in July | ||||
| August | 73.2°F | 66.6°F | 78.3°F | warm |
| Water temperature in Union Pier in August | ||||
| September | 69.1°F | 62.6°F | 75.4°F | warm |
| Water temperature in Union Pier in September | ||||
| October | 60.1°F | 51.8°F | 69.1°F | cold |
| Water temperature in Union Pier in October | ||||
| November | 50.5°F | 41.2°F | 59.7°F | cold |
| Water temperature in Union Pier in November | ||||
| December | 42.4°F | 35.1°F | 48.7°F | cold |
| Water temperature in Union Pier in December | ||||
Chart monthly average water temperature in Union Pier
