Rough water today
forecastNo weather alert for Kailua Beach, but the forecast has waves to 6 ft. Fine for a walk, not for a swim.
Rough water today. Showery, high near 81°. Likely rain around 7 AM, 96% chance. Driest stretch: 12 PM to 8 PM, but dry isn't calm. Keep out of rough water.
forecastRain OutlookOpen-Meteo
tap an hourPeak rain chance 96% around 7 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
13 mph
from the ENE
UV Index
Moderate
easy sunscreen day
Time to Burn
UV 4 · incl. sand glarefor unprotected fair skin (burns easily, tans a little). SPF 30 if you are out for more than an hour.
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 (80°), coolest around March (76°).
surf’s up (gently)
Tides are NOAA predictions (Kailua Beach station 1612480); 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 Kailua Beach, but the forecast has waves to 6 ft. Fine for a walk, not for a swim. The water at Kailua Beach is 79°F (26°C) today, about normal for October. For swimming it is comfortable for swimming. Waves are 5–6 ft (very rough). The air is 77°F, feeling like 82°F, with breezy 9 mph winds from the ENE. The UV index reaches 4 (moderate).
The water holds steady around 79°F through Thu Nov 5.
The week ahead at Kailua Beach, 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 | Drizzle | 81°F | 13 mph | 5.5 ft | 4 | 94% | 79°F |
| Sat Oct 31 | Thunderstorms | 80°F | 10 mph | 4.9 ft | 4 | 84% | 80°F |
| Sun Nov 1 | Showers | 79°F | 16 mph | 5.2 ft | 7 | 62% | 80°F |
| Mon Nov 2 | Drizzle | 79°F | 17 mph | 5.6 ft | 3 | 33% | 80°F |
| Tue Nov 3 | Drizzle | 78°F | 15 mph | 5.4 ft | 7 | 54% | 79°F |
| Wed Nov 4 | Drizzle | 79°F | 15 mph | 4.9 ft | 7 | 67% | 79°F |
| Thu Nov 5 | Drizzle | 79°F | 15 mph | 5.6 ft | 7 | 63% | 79°F |
High and low tides for the next 7 days, from NOAA’s predictions for tide station 1612480. 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 6:39 AM 2.5 | Low 11:01 PM 0.0 | — | — | — |
| Sat Oct 31 | High 7:59 AM 2.4 | — | — | — | — |
| Sun Nov 1 | Low 12:14 AM 0.3 | High 9:12 AM 2.3 | Low 6:25 PM 0.8 | High 9:17 PM 0.8 | — |
| Mon Nov 2 | Low 2:01 AM 0.5 | High 10:09 AM 2.3 | Low 5:51 PM 0.6 | High 11:05 PM 1.1 | 4:36 PM–6:36 PM |
| Tue Nov 3 | Low 3:46 AM 0.7 | High 10:51 AM 2.2 | Low 5:55 PM 0.5 | — | 4:40 PM–6:40 PM |
| Wed Nov 4 | High 12:02 AM 1.5 | Low 5:05 AM 0.8 | High 11:22 AM 2.0 | Low 6:07 PM 0.3 | 4:52 PM–6:52 PM · best |
| Thu Nov 5 | High 12:46 AM 1.8 | Low 6:06 AM 0.9 | High 11:47 AM 1.9 | Low 6:23 PM 0.1 | 4:51 AM–6:51 AM |
The average sea temperature at Kailua Beach for each month (2021–2024). The water is warmest in October (80°F) and coolest in March (76°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 | 76°F | 24°C | Comfortable |
| April | 76°F | 25°C | Comfortable |
| May | 77°F | 25°C | Comfortable |
| June | 78°F | 26°C | Comfortable |
| July | 79°F | 26°C | Comfortable |
| August | 80°F | 26°C | Comfortable |
| September | 80°F | 27°C | Warm |
| October (now) | 80°F | 27°C | Warm |
| November | 79°F | 26°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 not allowed on this beach.
Swim near a lifeguard when one is on duty, and follow the beach flags and posted signs. The Kailua Beach 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 Kailua Beach 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 Kailua Beach 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.
79°F (26°C), about normal for October.
At 79°F the water is comfortable for swimming. Waves are 5–6 ft, which is very rough.
5–6 ft, which is very rough. The wind is 9 mph from the ENE.
High tide is at 6:39 AM, and low tide is at 11:01 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 78–81°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 Kailua Beach averages about 80°F (27°C) in October.
October is the warmest month, averaging 80°F. March is the coolest, at 76°F.
The water averages 74°F or warmer from January to December. October is the warmest, at 80°F.
The usual water temperature in October at the nearest beaches. Tap one for its live conditions.
| Lanikai Beach conditions | 2 mi | 80°F |
|---|---|---|
| Hanauma Bay conditions | 9 mi | 80°F |
| Waikiki Beach conditions | 10 mi | 81°F |
| Kapalua Bay conditions | 74 mi | 80°F |
| Ka'anapali Beach conditions | 75 mi | 80°F |
| Wailea Beach conditions | 97 mi | 81°F |
More for Kailua Beach: parking · sunset time tonight · things to do · US water temperatures today →