Rough water today
forecastNo weather alert for Hanalei Bay, but the forecast has waves to 7 ft. Fine for a walk, not for a swim.
Rough water today. Showery, high near 78°. Likely rain around 6 AM, 100% chance. Driest stretch: 4 PM to 8 PM, but dry isn't calm. Keep out of rough water.
forecastRain OutlookOpen-Meteo
tap an hourPeak rain chance 100% around 6 AM — plan beach time outside that window.
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
8 mph
from the E
UV Index
Low
easy sunscreen day
Time to Burn
UV 2 · incl. sand glarefor unprotected fair skin (burns easily, tans a little). Low burn risk, but reapply if you are out all afternoon.
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
todayDangerous currents likely. Knee-deep only, lifeguarded sand only.
Caught in one? Don’t fight it. Swim parallel to the beach until you’re free, then angle back in.
Beach Flag
Red Flag
knee-deep only
estimated · trust the lifeguard
Water by Monthtypical
avg 2021–2024Warmest around October (81°), coolest around March (75°).
surf’s up (gently)
Tides are NOAA predictions (Hanalei Bay station 1611400); 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.
Rough water today. No weather alert for Hanalei Bay, but the forecast has waves to 7 ft. Fine for a walk, not for a swim. The water at Hanalei Bay is 79°F (26°C) today, 2°F cooler than the usual 81°F for October. For swimming it is comfortable for swimming. Waves are 6–7 ft (very rough). The air is 75°F, feeling like 82°F, with light 7 mph winds from the ESE. The UV index reaches 4 (moderate).
The water holds steady around 79°F through Thu Nov 5.
The week ahead at Hanalei Bay, day by day: the sky, the high, the strongest wind and the biggest waves, the UV peak and the daytime chance of rain, and the water temperature. The calmest day for a swim looks like Sat Oct 31.
| Day | Sky | High | Wind | Waves | UV | Rain | Water |
|---|---|---|---|---|---|---|---|
| Today | Showers | 78°F | 9 mph | 6.8 ft | 4 | 100% | 79°F |
| Sat Oct 31 | Showers | 81°F | 8 mph | 6.3 ft | 3 | 90% | 79°F |
| Sun Nov 1 | Showers | 77°F | 10 mph | 11.2 ft | 4 | 91% | 79°F |
| Mon Nov 2 | Showers | 78°F | 11 mph | 11.8 ft | 6 | 39% | 79°F |
| Tue Nov 3 | Showers | 75°F | 10 mph | 9.5 ft | 5 | 73% | 79°F |
| Wed Nov 4 | Drizzle | 76°F | 10 mph | 8.5 ft | 3 | 88% | 79°F |
| Thu Nov 5 | Drizzle | 79°F | 11 mph | 10 ft | 2 | 81% | 79°F |
High and low tides for the next 7 days, from NOAA’s predictions for tide station 1611400. 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 7:23 AM 2.3 | Low 11:50 PM 0.2 | — | — | — |
| Sat Oct 31 | High 8:29 AM 2.2 | Low 5:26 PM 0.5 | High 8:45 PM 0.6 | — | 4:11 PM–6:11 PM |
| Sun Nov 1 | Low 1:02 AM 0.4 | High 9:38 AM 2.0 | Low 5:51 PM 0.4 | High 10:53 PM 0.7 | 4:36 PM–6:36 PM |
| Mon Nov 2 | Low 2:54 AM 0.6 | High 10:40 AM 1.9 | Low 6:13 PM 0.3 | — | 4:58 PM–6:58 PM · best |
| Tue Nov 3 | High 12:06 AM 1.0 | Low 4:45 AM 0.6 | High 11:34 AM 1.8 | Low 6:34 PM 0.2 | — |
| Wed Nov 4 | High 12:56 AM 1.3 | Low 6:11 AM 0.7 | High 12:18 PM 1.6 | Low 6:53 PM 0.1 | — |
| Thu Nov 5 | High 1:38 AM 1.6 | Low 7:20 AM 0.7 | High 12:56 PM 1.5 | Low 7:13 PM 0.1 | 6:05 AM–8:05 AM |
The average sea temperature at Hanalei Bay for each month (2021–2024). The water is warmest in October (81°F) and coolest in March (75°F). It averages 74°F or warmer, comfortable for most swimmers, in every month.
| Month | Water °F | Water °C | For swimming |
|---|---|---|---|
| January | 77°F | 25°C | Comfortable |
| February | 76°F | 24°C | Comfortable |
| March | 75°F | 24°C | Comfortable |
| April | 76°F | 24°C | Comfortable |
| May | 78°F | 25°C | Comfortable |
| June | 79°F | 26°C | Comfortable |
| July | 79°F | 26°C | Comfortable |
| August | 80°F | 27°C | Warm |
| September | 80°F | 27°C | Warm |
| October (now) | 81°F | 27°C | Warm |
| November | 80°F | 27°C | Comfortable |
| December | 78°F | 26°C | Comfortable |
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 4 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 Hanalei Bay 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. Today at Hanalei Bay it’s very rough.
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 Hanalei Bay it’s light.
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.
79°F (26°C), 2°F cooler than the usual 81°F for October.
At 79°F the water is comfortable for swimming. Waves are 6–7 ft, which is very rough.
6–7 ft, which is very rough. The wind is 7 mph from the ESE.
High tide is at 7:23 AM, and low tide is at 11:50 PM. Times are NOAA predictions.
The UV index peaks at 4 (moderate). Wear SPF 30 and reapply every two hours and after swimming.
Highs run 75–81°F over the next 7 days. Rain is likely on Fri Oct 30, Sat Oct 31, Sun Nov 1, Tue Nov 3, Wed Nov 4 and Thu Nov 5. The calmest day for a swim looks like Sat Oct 31.
The water at Hanalei Bay averages about 81°F (27°C) in October.
October is the warmest month, averaging 81°F. March is the coolest, at 75°F.
The water averages 74°F or warmer from January to December. October is the warmest, at 81°F.
The usual water temperature in October at the nearest beaches. Tap one for its live conditions.
| Po'ipu Beach conditions | 23 mi | 81°F |
|---|---|---|
| Waikiki Beach conditions | 125 mi | 81°F |
| Kailua Beach conditions | 126 mi | 80°F |
| Lanikai Beach conditions | 128 mi | 80°F |
| Hanauma Bay conditions | 133 mi | 80°F |
| Kapalua Bay conditions | 200 mi | 80°F |
More for Hanalei Bay: parking · sunset time tonight · things to do · US water temperatures today →