Water temperature in Islip in November
Is it warm enough to swim in Islip in November? Average water temperature in Islip in November is 55.2°F and therefore is not suitable for comfortable swimming. The warmest sea in Islip in November is 62.8°F, and the coldest is 41.7°F. Average high air temperature in Islip in November is 53°F, and average low temperature is 37°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Islip
Changes water temperature in Islip in November 2025, 2024
To get an accurate forecast for the water temperature in Islip for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Islip, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of November.
You can choose any other years:
| Day | 2025 | 2024 | Min | Max |
|---|---|---|---|---|
| November 1 | 59.2°F | 60.8°F | 56.1°F | 62.6°F |
| November 2 | 59°F | 60.3°F | 54.9°F | 62.6°F |
| November 3 | 58.6°F | 60.6°F | 54.9°F | 62.1°F |
| November 4 | 58.5°F | 59.9°F | 54.3°F | 61.7°F |
| November 5 | 58.3°F | 59.4°F | 54.3°F | 61.7°F |
| November 6 | 59.4°F | 53.8°F | 62.2°F | |
| November 7 | 60.1°F | 53.6°F | 62.8°F | |
| November 8 | 59°F | 53.4°F | 60.8°F | |
| November 9 | 57.9°F | 53.4°F | 60.4°F | |
| November 10 | 58.6°F | 52.5°F | 60.3°F | |
| November 11 | 57.9°F | 51.8°F | 60.4°F | |
| November 12 | 55.8°F | 51.4°F | 60.8°F | |
| November 13 | 56.7°F | 50.2°F | 59.2°F | |
| November 14 | 56.8°F | 50°F | 59.5°F | |
| November 15 | 57.2°F | 49.3°F | 58.8°F |
| Day | 2025 | 2024 | Min | Max |
|---|---|---|---|---|
| November 16 | 57.2°F | 48.7°F | 58.3°F | |
| November 17 | 56.5°F | 49.5°F | 57.7°F | |
| November 18 | 56.8°F | 50°F | 57.7°F | |
| November 19 | 55.4°F | 49.3°F | 57.7°F | |
| November 20 | 56.1°F | 48.6°F | 57.6°F | |
| November 21 | 55.6°F | 46.4°F | 56.8°F | |
| November 22 | 55.4°F | 46.6°F | 56.5°F | |
| November 23 | 54.9°F | 47.1°F | 56.3°F | |
| November 24 | 54.5°F | 47.8°F | 55.4°F | |
| November 25 | 53.8°F | 46.4°F | 55°F | |
| November 26 | 52.9°F | 44.8°F | 56.3°F | |
| November 27 | 52.9°F | 46.2°F | 55.6°F | |
| November 28 | 52.9°F | 45.3°F | 54.5°F | |
| November 29 | 51.8°F | 42.3°F | 54.3°F | |
| November 30 | 50.9°F | 41.7°F | 53.6°F |
Average water temperature in Islip in November over a decade
| 2015 | 2016 | 2017 | 2018 | 2019 |
| 57.4°F | 56.5°F | 57.9°F | 53.2°F | 54.1°F |
| 2020 | 2021 | 2022 | 2023 | 2024 |
| 55.8°F | 57.7°F | 56.7°F | 49.8°F | 56.7°F |
Islip sea state in November
Chart comparing the height of waves in Islip in November over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.
Weather and climate in Islip in November
This data display average monthly climate indicators in Islip in November based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip
- Average HIGH temperature53°F
- Average LOW temperature37°F
- Average rainfall days10 days
- Average rainfall94mm/3.7''
- Average snowfall13mm/0.5''
Islip water temperature during other months:
You can also view information about water temperature for other months by clicking on the month button below
