Overcast, high near 74°. It might rain around 10 AM, 16% chance. All-day beach window. Breezy, up to 18 mph.
forecastRain OutlookOpen-Meteo
tap an hourTop rain chance is just 16% — 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
15 mph
from the E
UV Index
High
reapply every 80 min
Time to Burn
UV 6 · incl. sand glarefor unprotected fair skin (burns easily, tans a little). SPF 30+, reapply every 2 hours and after every swim.
Strongest 12 PM to 1 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
Stingers & Biters
modelled, not observedBased on wind, water temperature and humidity. Nobody publishes a live count, so this is what conditions favour today.
Portuguese man o' warUnlikely
The wind has been blowing along or off the beach, which keeps them offshore.
No-see-umsUnlikely
11 mph breeze around sunset should keep them down.
Water by Monthtypical
avg 2021–2024Warmest around August (90°), coolest around January (60°).
surf’s up (gently)
Tides are NOAA predictions (Grand Isle station TEC4455); 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.
The air is 74°F, with windy 16 mph winds from the ESE. The UV index reaches 6 (high).
The week ahead at Grand Isle, 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 Thu Nov 5.
| Day | Sky | High | Wind | Waves | UV | Rain |
|---|---|---|---|---|---|---|
| Today | Cloudy | 74°F | 18 mph | — | 6 | 16% |
| Tue Nov 3 | Cloudy | 74°F | 16 mph | — | 4 | 3% |
| Wed Nov 4 | Cloudy | 85°F | 12 mph | — | 6 | 6% |
| Thu Nov 5 | Sunny | 83°F | 8 mph | — | 6 | 1% |
| Fri Nov 6 | Showers | 81°F | 10 mph | — | 5 | 23% |
| Sat Nov 7 | Drizzle | 77°F | 11 mph | — | 4 | 13% |
| Sun Nov 8 | Cloudy | 78°F | 11 mph | — | 5 | 15% |
High and low tides for the next 7 days, from NOAA’s predictions for tide station TEC4455. 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 | High 4:11 AM 1.4 | Low 3:23 PM 0.2 | — | — | 2:08 PM–4:08 PM |
| Tue Nov 3 | High 5:28 AM 1.1 | Low 4:16 PM 0.5 | — | — | 3:01 PM–5:01 PM |
| Wed Nov 4 | High 8:54 AM 0.9 | Low 4:48 PM 0.7 | High 10:34 PM 0.8 | — | 3:33 PM–5:33 PM |
| Thu Nov 5 | Low 5:23 AM 0.6 | High 9:36 PM 1.0 | — | — | — |
| Fri Nov 6 | Low 6:11 AM 0.4 | High 9:18 PM 1.1 | — | — | 4:56 AM–6:56 AM |
| Sat Nov 7 | Low 6:56 AM 0.2 | High 9:30 PM 1.3 | — | — | 5:41 AM–7:41 AM |
| Sun Nov 8 | Low 7:40 AM 0.1 | High 9:55 PM 1.4 | — | — | 6:25 AM–8:25 AM · best |
The average sea temperature at Grand Isle for each month (2021–2024). The water is warmest in August (90°F) and coolest in January (60°F). It averages 74°F or warmer, comfortable for most swimmers, in May, June, July, August, September, October.
| Month | Water °F | Water °C | For swimming |
|---|---|---|---|
| January | 60°F | 16°C | Chilly |
| February | 61°F | 16°C | Chilly |
| March | 69°F | 20°C | Cool |
| April | 73°F | 23°C | Cool |
| May | 80°F | 27°C | Warm |
| June | 85°F | 29°C | Warm |
| July | 88°F | 31°C | Very warm |
| August | 90°F | 32°C | Very warm |
| September | 86°F | 30°C | Warm |
| October | 78°F | 26°C | Comfortable |
| November (now) | 72°F | 22°C | Cool |
| December | 65°F | 18°C | Chilly |
Rip currents. 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. Wear SPF 30 and reapply every two hours and after swimming.
Dogs. Dogs are allowed right now, on a leash.
Swim near a lifeguard when one is on duty, and follow the beach flags and posted signs. The Grand Isle 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 Grand Isle it’s windy.
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 4:11 AM, and low tide is at 3:23 PM. Times are NOAA predictions.
The UV index peaks at 6 (high). Wear SPF 30 and reapply every two hours and after swimming.
Highs run 74–85°F over the next 7 days. No day has a strong chance of rain. The calmest day for a swim looks like Thu Nov 5.
The water at Grand Isle averages about 72°F (22°C) in November.
August is the warmest month, averaging 90°F. January is the coolest, at 60°F.
The water averages 74°F or warmer from May, June, July, August, September and October. August is the warmest, at 90°F.
The usual water temperature in November at the nearest beaches. Tap one for its live conditions.
| Bay St. Louis conditions | 84 mi | 69°F |
|---|---|---|
| Gulfport conditions | 93 mi | 69°F |
| Biloxi conditions | 103 mi | 69°F |
| Dauphin Island conditions | 134 mi | 70°F |
| Gulf Shores conditions | 154 mi | 71°F |
| Orange Beach conditions | 161 mi | 71°F |
More for Grand Isle: parking · sunset time tonight · things to do · US water temperatures today →