Nantucket Beach Conditions Today
Live water temperature, tides, waves, and UV for Nantucket Beach, Massachusetts
Updated 7:03 AM EDT
Current conditions
Best time to go today
Morning now
6 AM – 11 AM
94/100
- 73°F, wind 10 mph
- Moderate UV (4)
Midday
11 AM – 3 PM
90/100
- 76°F, wind 6 mph
- ⚠ UV reaches 7 — high
Afternoon
3 PM – 7 PM
93/100
- 77°F, wind 9 mph
- Moderate UV (5)
- Golden hour before sunset
Best for
Rip current risk
NWS BOX Surf Zone Forecast, issued 2026-08-28. Always follow lifeguard instructions and posted flags.
Today's tide schedule
| Tide | Time EDT | Height |
|---|---|---|
| ⬆️ High | 12:41 AM | 3.5 ft |
| ⬇️ Low | 6:40 AM | 0.4 ft |
| ⬆️ High | 1:14 PM | 3.1 ft |
| ⬇️ Low | 6:47 PM | 0.5 ft |
Predictions from NOAA station Nantucket · 8.3 km away.
About Nantucket Beach
Nantucket Beach sits on the Massachusetts coast, where the water runs from about 39°F in February to 69°F in August.
The water here never averages above 70°F — even in August, the warmest month, it sits around 69°F. Most people wear a wetsuit.
Today it is 70°F. That is 1° above the August average of 69°F here.
Tide predictions come from NOAA station Nantucket about 8.3 km away on the open coast.
Frequently asked questions
Is today a good beach day at Nantucket Beach?
We score today 94 out of 100 — great. The best window is morning (6 AM – 11 AM).
How warm is the water at Nantucket Beach?
About 70°F. That is 1° above the August average of 69°F here.
Are there rip currents at Nantucket Beach today?
The National Weather Service rates the rip current risk at Nantucket Beach as moderate for today. Life-threatening rip currents are possible in the surf zone — swim near a lifeguard.
Where do the tide times on this page come from?
Tide predictions come from NOAA station Nantucket about 8.3 km away on the open coast.