Partly cloudy, high near 81°. It might rain around 6 PM, 21% chance. All-day beach window. Breezy, up to 15 mph.
forecastRain OutlookOpen-Meteo
tap an hourTop rain chance is just 21% — pack the sunscreen, not the umbrella.
Tide
0.3 ft · falling ↘
Next low tide
12:24 PM 0.2 ft
T−…
1.9 ft of drop from the 7:54 AM high; the wet sand is widest from about 11:24 AM.
Wind
11 mph
from the ENE
UV Index
Moderate
easy sunscreen day
Time to Burn
UV 5 · incl. sand glarefor unprotected fair skin (burns easily, tans a little). SPF 30+, reapply every 2 hours and after every swim.
Strongest 1 PM to 3 PM · peaks at UV 6
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
Red Tide
Checking…
asking FWC
Stingers & Biters
modelled, not observedBased on wind, water temperature and humidity. Nobody publishes a live count, so this is what conditions favour today.
No-see-umsUnlikely
8 mph breeze around sunset should keep them down.
Water Quality
bacteria testingWater here is sampled by the Florida Healthy Beaches Program at the Hobe Sound Public Beach station (3.8 km from the beach centre). We do not restate the result, because the state publishes it only on its own page and a stale copy here could be wrong about today.
Today’s official resultSource: Florida Department of Health
Sargassum WatchNOAA satellite
seaweed outlookLatest 7-day NOAA satellite composite detects moderate sargassum offshore. Some may drift onto the beach. Offshore satellite estimate only — on-the-ground conditions may differ.
Water by Monthtypical
avg 2021–2024Warmest around September (86°), coolest around January (74°).
surf’s up (gently)
Tides are NOAA predictions (Jupiter Island station 8722669); temps, wind, UV, waves and water temp are live from Open-Meteo; rip current risk from the NWS surf-zone forecast; red tide from FWC sampling. Flag status is estimated from wave height and wind, so always trust the lifeguard’s actual flag over this app.
Not a beach day today. The National Weather Service has a Coastal Flood Warning in effect for Jupiter Island until 2 PM. High tides will flood the beach, the dunes and nearby low roads. The air is 76°F, feeling like 79°F, with breezy 14 mph winds from the ENE. The UV index reaches 6 (high), strongest from 1 PM to 3 PM. The National Weather Service rip current risk is high.
The week ahead at Jupiter Island, day by day: the sky, the high, the strongest wind and the biggest waves, the UV peak and the daytime chance of rain. The calmest day for a swim looks like Wed Nov 4.
| Day | Sky | High | Wind | Waves | UV | Rain |
|---|---|---|---|---|---|---|
| Today | Showers | 81°F | 15 mph | — | 6 | 21% |
| Fri Oct 30 | Showers | 81°F | 15 mph | — | 6 | 51% |
| Sat Oct 31 | Thunderstorms | 80°F | 18 mph | — | 6 | 60% |
| Sun Nov 1 | Thunderstorms | 77°F | 17 mph | — | 2 | 70% |
| Mon Nov 2 | Thunderstorms | 76°F | 14 mph | — | 3 | 56% |
| Tue Nov 3 | Drizzle | 81°F | 15 mph | — | 6 | 22% |
| Wed Nov 4 | Drizzle | 82°F | 14 mph | — | 6 | 16% |
High and low tides for the next 7 days, from NOAA’s predictions for tide station 8722669. Heights are in feet above the average low tide. The shell window is the last hour and a quarter of the ebb and the first three-quarters of the flood around the day’s lowest daylight low, when the most sand is bare; the lowest low of the week is marked.
| Day | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Shell window |
|---|---|---|---|---|---|
| Today | Low 6:14 AM -0.2 | High 12:34 PM 3.3 | Low 7:05 PM 0.3 | — | 5:50 PM–7:50 PM |
| Fri Oct 30 | High 12:46 AM 2.6 | Low 7:06 AM -0.1 | High 1:27 PM 3.2 | Low 8:01 PM 0.3 | 5:51 AM–7:51 AM · best |
| Sat Oct 31 | High 1:41 AM 2.6 | Low 8:06 AM 0.0 | High 2:24 PM 3.0 | Low 9:02 PM 0.4 | 6:51 AM–8:51 AM |
| Sun Nov 1 | High 1:42 AM 2.5 | Low 8:14 AM 0.1 | High 2:23 PM 2.9 | Low 9:05 PM 0.4 | 6:59 AM–8:59 AM |
| Mon Nov 2 | High 2:47 AM 2.5 | Low 9:22 AM 0.2 | High 3:22 PM 2.8 | Low 10:05 PM 0.3 | 8:07 AM–10:07 AM |
| Tue Nov 3 | High 3:52 AM 2.5 | Low 10:28 AM 0.3 | High 4:21 PM 2.7 | Low 11:03 PM 0.2 | 9:13 AM–11:13 AM |
| Wed Nov 4 | High 4:56 AM 2.6 | Low 11:31 AM 0.3 | High 5:19 PM 2.6 | Low 11:58 PM 0.1 | 10:16 AM–12:16 PM |
The average sea temperature at Jupiter Island for each month (2021–2024). The water is warmest in September (86°F) and coolest in January (74°F). It averages 74°F or warmer, comfortable for most swimmers, in every month.
| Month | Water °F | Water °C | For swimming |
|---|---|---|---|
| January | 74°F | 24°C | Comfortable |
| February | 74°F | 24°C | Comfortable |
| March | 76°F | 24°C | Comfortable |
| April | 77°F | 25°C | Comfortable |
| May | 80°F | 27°C | Warm |
| June | 83°F | 28°C | Warm |
| July | 85°F | 30°C | Warm |
| August | 86°F | 30°C | Very warm |
| September | 86°F | 30°C | Very warm |
| October (now) | 82°F | 28°C | Warm |
| November | 80°F | 26°C | Comfortable |
| December | 76°F | 25°C | Comfortable |
Rip currents. Today’s National Weather Service rip current risk is high. If a current pulls you away from shore, don’t fight it: swim parallel to the beach until you are out of it, then swim back in. If you can’t, float and wave for help.
Sun. The UV index peaks at 6 today, when unprotected fair skin burns in about 24 minutes. Wear SPF 30 or higher, reapply every two hours and after swimming, and find shade in the middle of the day.
Red tide. Florida's state sampling (FWC) near Jupiter Island shows red tide at none levels, from 1 sample this week. Red tide can make you cough and sting your eyes near the water.
Seaweed. The NOAA satellite shows moderate sargassum offshore.
Water quality. Water at Jupiter Island is sampled by the Florida Healthy Beaches Program at the Hobe Sound Public Beach station. Official sampling results →
Dogs. Whether dogs are allowed here depends on which part of the beach you are on.
Weather alerts in effect: Coastal Flood Warning, Rip Current Statement, Coastal Flood Advisory, High Surf Advisory.
Swim near a lifeguard when one is on duty, and follow the beach flags and posted signs. The Jupiter Island rules page covers dogs, alcohol, fires and more.
Under 1 ft is calm, good for small children and floating. 1–2 ft is small, fine for most swimmers. 2–4 ft is moderate: fun for bodyboarding, harder for weak swimmers. 4–6 ft is rough, and over 6 ft is dangerous for swimming.
Under 8 mph is light and pleasant. 8–15 mph is breezy, good for kites and cooler on a hot day. 15–25 mph blows sand and whips up the water. Over 25 mph most people pack up. Today at Jupiter Island it’s breezy.
0–2 is low, 3–5 moderate, 6–7 high, 8–10 very high and 11 or more extreme. At 8 or more, fair skin can burn in under 20 minutes. The UV index is highest around midday even when it is cloudy.
Under 60°F is cold and most people want a wetsuit. 68–73°F is cool but swimmable. 74–79°F feels comfortable, and 80°F or more feels warm.
High tide is at 12:34 PM, and low tide is at 6:14 AM and 7:05 PM. Times are NOAA predictions.
The UV index peaks at 6 (high). At that peak, unprotected fair skin burns in about 24 minutes. Wear SPF 30 or higher, reapply every two hours and after swimming, and find shade in the middle of the day.
The National Weather Service rates the rip current risk at Jupiter Island high today. If a current pulls you out, swim parallel to the shore until you are out of it, then swim back in.
Florida's state sampling (FWC) near Jupiter Island shows red tide at none levels, from 1 sample this week.
The NOAA satellite shows moderate sargassum offshore.
Highs run 76–82°F over the next 7 days. Rain is likely on Fri Oct 30, Sat Oct 31, Sun Nov 1 and Mon Nov 2. The calmest day for a swim looks like Wed Nov 4.
The water at Jupiter Island averages about 82°F (28°C) in October.
September is the warmest month, averaging 86°F. January is the coolest, at 74°F.
The water averages 74°F or warmer from January to December. September is the warmest, at 86°F.
The usual water temperature in October at the nearest beaches. Tap one for its live conditions.
| Jupiter Beach conditions | 7 mi | 82°F |
|---|---|---|
| Juno Beach conditions | 12 mi | 82°F |
| Jensen Beach conditions | 15 mi | 81°F |
| West Palm Beach conditions | 18 mi | 84°F |
| Palm Beach conditions | 23 mi | 84°F |
| Lake Worth Beach conditions | 29 mi | 84°F |
More for Jupiter Island: parking · sunset time tonight · things to do · US water temperatures today →