Updated
Groton Beach
Beach
Cool water — ease in carefully
Use cautionCool water — ease in carefully: water temperature is 70°F, cool enough to cause cold-water shock on a sudden entry.
- Water temperature is 70°F, cool enough to cause cold-water shock on a sudden entry.
- Heavy rain today can raise bacteria levels near outfalls and river mouths.
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Cool water — ease in carefully
Use cautionCool water — ease in carefully: water temperature is 70°F, cool enough to cause cold-water shock on a sudden entry.
- Water temperature is 70°F, cool enough to cause cold-water shock on a sudden entry. — NOAA buoy NLHC3, as of Aug 21, 6:30 PM UTC
- Heavy rain today can raise bacteria levels near outfalls and river mouths.
No official beach-advisory feed for Massachusetts yet — follow posted signs and local guidance.
Live data from NOAA buoy NLHC3 (4.1 mi away), as of Aug 21, 6:30 PM UTC.
Weather at Groton Beach
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Frequently asked questions
- Where is Groton Beach?
- Groton Beach is a beach in Massachusetts.
- What is the water temperature at Groton Beach?
- As of August 21, 2026, the water temperature at Groton Beach in Massachusetts is 70°F (21°C), measured by NOAA buoy NLHC3, 4.1 miles away.
- Can you swim at Groton Beach?
- Cool water — ease in carefully: water temperature is 70°F, cool enough to cause cold-water shock on a sudden entry. Checked August 21, 2026.
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Best Times to Visit
- ›Arrive early for best parking and beach spot selection
- ›Check for lifeguard schedules and swim only in designated areas
- ›Bring reef-safe sunscreen to protect marine life
- ›Watch for beach flags indicating water conditions
Location & Contact
Massachusetts
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