Launch Conditions
Use cautionLaunch with caution — limited daylight.
- Advisories
- None active
- Daylight
- Sunset 8:17 PM — under 2h
- Water level
- 2.37 ft
Live from the National Weather Service, USGS, and NOAA. A guide, not a substitute for official forecasts and your own judgment.
Live Water Conditions on Great South Bay
Updated 39 min agoSource: USGS station 01306460 — CONNETQUOT BK NR CENTRAL ISLIP NY · 5.1 mi from Great South Bay
Launch Light & Moon — July 23
local timeFirst Quarter (69% illuminated). Average fishing outlook by moon phase — focus on dawn and dusk bite windows.
Location
Quick Facts: Great South Bay (Launch 30)
| Location | Town of Islip, New York |
|---|---|
| Waterbody | Great South Bay |
| Access Type | Public - Free |
| Coordinates | 40.707656, -73.189785 |
| Hours | Check on site |
| County | Suffolk |
Great South Bay (Launch 30) is a public boat launch providing access to Great South Bay in Town of Islip, New York at coordinates 40.70766, -73.18979. Data published by New York State Department of Environmental Conservation (NY DEC).
Great South Bay (Launch 30) is a public boat launch on Great South Bay in Town of Islip, Suffolk County, New York. As a public launch it is open to all boaters; state- and county-run ramps like this are typically free or charge only a modest day-use fee. Facility details on record include ramp surface: Hard Surface Launch, managed by: Municipal. This page shows live USGS water level and temperature, sunrise, sunset, and moon-phase times for the launch, updated automatically. There are 6 other mapped boat ramps within about 15 miles if conditions here aren't right.
Related: boat ramp near Town of Islip • public launch in Suffolk • fishing access on Great South Bay • New York boat launch
Facilities & Amenities
| Ramp Surface | Hard Surface Launch |
|---|---|
| Managed By | Municipal |
Facility details from the managing agency's public records.
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Frequently Asked Questions About Great South Bay (Launch 30)
Is Great South Bay (Launch 30) free to use?
Yes, Great South Bay (Launch 30) is a public boat launch with free access in Town of Islip, New York.
What water does Great South Bay (Launch 30) access?
Great South Bay (Launch 30) provides boat launch access to Great South Bay in Town of Islip, New York.
How do I get to Great South Bay (Launch 30)?
Great South Bay (Launch 30) is located at coordinates 40.707656, -73.189785 in Town of Islip, New York. Use the "Get Directions" buttons on this page to navigate with Google Maps or Apple Maps.
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Alternative Boat Launches Nearby
The area surrounding Great South Bay (Launch 30) includes 6 other public boat ramps within 5.7 mi, giving boaters flexibility in choosing their access point.