Water temperature in Southampton (ON)
This data the coastal Southampton 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 Southampton
Water temperature in Southampton today is 17.7°C. Based on our historical data over a period of ten years, the warmest water in this day in the Lake Huron near Southampton was recorded in 2017 and was 20.4°C, and the coldest was recorded in 2018 at 15.9°C. Water temperature in Southampton is expected to drop to 16.3°C in the next 10 days. September average water temperature in Southampton is 19.2°C, the minimum temperature is 15.3°C, and the maximum is 22.6°C.
The swimming season in Southampton lasts from July to September. During those months, Southampton water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Southampton in winter reaches 3.4°C, in spring 3.7°C, in summer the average temperature rises to 17.6°C, and in autumn it is 14.5°C.
Southampton water temperature now
| 27 September 2025 |
|---|
| today temp |
| 17.7°C |
| 26 September 2025 |
|---|
| yesterday temp |
| 17.8°C |
Surf Forecast in Southampton 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 Southampton. 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 Southampton. Data in table shown for 27 September 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' 6" | 0' 4" | 0' 3" | 0' 3" |
| 0.14 m | 0.11 m | 0.08 m | 0.07 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 0' 2" | 0' 2" | 0' 2" | 0' 2" |
| 0.06 m | 0.04 m | 0.05 m | 0.06 m |
Surf report in Southampton
Southampton weather forecast
Current temperature and weather
Data in a table show Southampton temperature today (27 September 2025). For more information and forecast for a few days, go to the weather forecast Southampton.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 |  |  |  |
| 15.7°C | 15.1°C | 14.4°C | 15.4°C |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| |  |  |
| 17.6°C | 18°C | 16.6°C | 15.7°C |
You may also be interested in other sections of our site for Southampton: Sunrise and Sunset, Tides
Southampton water temperature by month
These figures shows the average, minimum and maximum monthly water temperature in Southampton. 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 Southampton 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 | 3°C | -0.1°C | 5.4°C | cold |
| Water temperature in Southampton in January | ||||
| February | 1.4°C | -0.5°C | 3.8°C | cold |
| Water temperature in Southampton in February | ||||
| March | 1.3°C | -1.3°C | 3.7°C | cold |
| Water temperature in Southampton in March | ||||
| April | 2.9°C | -0.7°C | 7.5°C | cold |
| Water temperature in Southampton in April | ||||
| May | 6.8°C | 0.2°C | 13.2°C | cold |
| Water temperature in Southampton in May | ||||
| June | 12.6°C | 5.2°C | 19.1°C | cold |
| Water temperature in Southampton in June | ||||
| July | 19.2°C | 10.7°C | 23.4°C | cold |
| Water temperature in Southampton in July | ||||
| August | 20.9°C | 17.2°C | 24.4°C | warm |
| Water temperature in Southampton in August | ||||
| September | 19.2°C | 15.3°C | 22.6°C | cold |
| Water temperature in Southampton in September | ||||
| October | 14.5°C | 10.3°C | 19.2°C | cold |
| Water temperature in Southampton in October | ||||
| November | 9.7°C | 5°C | 14.1°C | cold |
| Water temperature in Southampton in November | ||||
| December | 5.8°C | 2.3°C | 9.1°C | cold |
| Water temperature in Southampton in December | ||||
Chart monthly average water temperature in Southampton
