Sunny, high near 90°. Rain chance peaks at 45% around 2 PM. Best beach window: 8 AM to 2 PM.
estimateRain Outlook
tap an hourPeak rain chance 45% around 2 PM — plan beach time outside that window.
Tide
0.3 ft · falling ↘
Wind
11 mph
from the E
UV Index
Very High
reapply every 80 min
Time to Burn
UV 10 · incl. sand glarefor unprotected fair skin (burns easily, tans a little). SPF 50, reapply every 80 minutes and after every swim.
Strongest 9 AM to 6 PM · peaks at UV 10
An estimate from the standard erythemal dose model, not a medical limit. Darker skin burns more slowly than this, people vary either way, and sunscreen only helps if you use enough of it and reapply.
Rip Current Riskestimated
todayCalm pattern today. Currents can still surprise — keep kids within reach.
Caught in one? Don’t fight it. Swim parallel to the beach until you’re free, then angle back in.
Beach Flag
Green Flag
calm, swim easy
estimated · trust the lifeguard
Water by Monthtypical
avg 2021–2024Warmest around August (67°), coolest around February (38°).
surf’s up (gently)
Tides are NOAA predictions (Nantasket Beach station 8443970); temps, wind, UV, waves and water temp are live from Open-Meteo; rip current risk from the NWS surf-zone forecast. Flag status is estimated from wave height and wind, so always trust the lifeguard’s actual flag over this app.
Right now at Nantasket, the water is 67°F, surf is running 1–2 ft and the air is 74°F but feels like 81°F. Wind is 2 mph from the S and the UV index peaks at 5 (moderate) today. Unprotected fair skin burns in about 31 minutes right now. Today’s tides: High 4:13 AM, Low 10:10 AM, High 4:23 PM, Low 10:51 PM. Rip current risk is moderate (NWS). Dogs are allowed right now, on a leash. Allowed until May 1.