Can you swim here today?
Duck Island Harbor
Connecticut · Bay
Comfortable for a swim today
Good to swimAs of August 23, 2026, the water temperature at Duck Island Harbor is 74°F (24°C), measured by NOAA buoy BRHC3, 19.6 miles away.
Comfortable for a swim today: water temperature is 74°F, within the comfortable 70–86°F range.
- Water temperature is 74°F, within the comfortable 70–86°F range. — NOAA buoy BRHC3, as of Aug 23, 10:54 AM UTC
- A Marine Weather Statement has been issued for Long Island Sound West of New Haven CT/Port Jefferson NY. — NWS Upton NY
Water temp
74°F
24°C
No official beach-advisory feed for Connecticut yet — follow posted signs and local guidance.
Live data from NOAA buoy BRHC3 (19.6 mi away), as of Aug 23, 10:54 AM UTC.
Before you get in
- Never swim alone — and keep weaker swimmers within arm's reach.
- Scout depth and entry/exit points before you get in.
- Read the current: avoid fast, rising, or murky water.
- Check the forecast — get out well before storms or lightning.
- Obey posted signs, flags, and lifeguard guidance.
Read next
Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.