Sea TemperaturesWinthrop Harbor Sea Temperature in September
Looking to find out what the average sea water temperature in Winthrop Harbor is for September? Find out what the lowest, highest, and average water temperatures are for Winthrop Harbor over the past 10 years.
Average water temperature in Winthrop Harbor for September
The average, high, and low temperatures below should help you if you can swim in the water in Winthrop Harbor in September.
Average
19.39° C
66.9° F
High
23.1° C
73.58° F
Low
10.13° C
50.23° F
Water temperature range by day in September in Winthrop Harbor
The chart below shows the range of low and high temperatures by day for the month of September in Winthrop Harbor.
Average daily water temperatures in Winthrop Harbor for September
| Day | Average | Low | High |
|---|---|---|---|
| 1 | 20.77° C | 17.76° C | 23.1° C |
| 2 | 20.68° C | 16.78° C | 22.86° C |
| 3 | 20.42° C | 15.68° C | 22.67° C |
| 4 | 20.13° C | 15.64° C | 22.59° C |
| 5 | 20.13° C | 16.64° C | 22.54° C |
| 6 | 19.84° C | 16.35° C | 22.45° C |
| 7 | 19.57° C | 16° C | 21.98° C |
| 8 | 19.54° C | 16.93° C | 21.42° C |
| 9 | 19.55° C | 16.84° C | 21.18° C |
| 10 | 19.51° C | 16.06° C | 21.18° C |
| 11 | 19.63° C | 16.48° C | 21.26° C |
| 12 | 19.53° C | 16.25° C | 21.46° C |
| 13 | 19.44° C | 15.93° C | 21.02° C |
| 14 | 19.57° C | 15.98° C | 21.54° C |
| 15 | 19.71° C | 15.89° C | 21.94° C |
| 16 | 19.91° C | 17.01° C | 22.26° C |
| 17 | 20.12° C | 17.6° C | 22.48° C |
| 18 | 20.26° C | 18.05° C | 22.59° C |
| 19 | 20.21° C | 17.76° C | 22.51° C |
| 20 | 20.13° C | 17.78° C | 22.58° C |
| 21 | 19.95° C | 17.47° C | 22.73° C |
| 22 | 19.48° C | 16.57° C | 22.65° C |
| 23 | 18.92° C | 15.24° C | 21.79° C |
| 24 | 18.91° C | 14.69° C | 21.51° C |
| 25 | 18.84° C | 13.95° C | 21.48° C |
| 26 | 18.15° C | 13.17° C | 21.35° C |
| 27 | 17.48° C | 12.79° C | 20.38° C |
| 28 | 16.83° C | 10.3° C | 20.17° C |
| 29 | 16.7° C | 10.13° C | 20.42° C |
| 30 | 16.67° C | 10.35° C | 20.44° C |
Water temperature in September for locations near Winthrop Harbor
Data source and citation
Raw data for the calculations made to find the sea surface temperature in Winthrop Harbor comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.
The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.
If you'd like to use any of the information above in the format it is presented, please use the citation tool below.