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Current weather in Kapaa is clear sky.

Where can I find the hourly weather forecast for Kapaa?

This page shows hourly weather forecast for Kapaa, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Kapaa updated regularly?

Weather data for Kapaa is updated regularly with the latest available observations and forecasts.

Now · 10:54 PM

Kapaa Weather & Hourly Forecast

United States · Hawaii · 96746

79°F

Clear night

Feels like: 81°F

💧 Humidity 70% 🌡 Pressure 29.94 inHg 💨 Wind 11 mph 👁 Visibility ☁ Clouds 9% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Kapaa

Today

11:00 PM

Clear night

79° 💧 None 💨 11 mph H 70%29.94 inHg

Tomorrow

8:00 AM

Mostly sunny

79° 💧 None 💨 7 mph H 79%29.91 inHg

5:00 PM

Light rain

80° 💧 None 💨 12 mph H 78%29.88 inHg

Wednesday

2:00 AM

Light rain

79° 💧 None 💨 9 mph H 80%29.97 inHg

11:00 AM

Mostly sunny

81° 💧 None 💨 13 mph H 78%30.03 inHg

8:00 PM

Light rain

80° 💧 None 💨 17 mph H 83%29.97 inHg

Thursday

5:00 AM

Light rain

79° 💧 None 💨 15 mph H 86%29.94 inHg

2:00 PM

Moderate rain

80° 💧 None 💨 20 mph H 83%29.97 inHg

11:00 PM

Moderate rain

77° 💧 None 💨 13 mph H 86%30.03 inHg

Friday

8:00 AM

Light rain

79° 💧 None 💨 15 mph H 81%30.00 inHg

5:00 PM

Mostly sunny

80° 💧 None 💨 17 mph H 80%29.97 inHg

Saturday

2:00 AM

Light rain

80° 💧 None 💨 13 mph H 79%30.00 inHg

11:00 AM

Light rain

81° 💧 None 💨 16 mph H 77%30.03 inHg

8:00 PM

Clear night

81° 💧 None 💨 15 mph H 79%30.00 inHg

Sunday

5:00 AM

Mostly clear night

80° 💧 None 💨 14 mph H 80%30.00 inHg

2:00 PM

Mostly sunny

81° 💧 None 💨 15 mph H 78%30.00 inHg

Today

11:00 PM

Clear night

79° 💧 None 💨 11 mph H 70%29.94 inHg

Tomorrow

2:00 AM

Clear night

79° 💧 None 💨 9 mph H 69%29.91 inHg

5:00 AM

Mostly clear night

79° 💧 None 💨 7 mph H 68%29.91 inHg

8:00 AM

Mostly sunny

79° 💧 None 💨 7 mph H 79%29.91 inHg

11:00 AM

Mostly sunny

80° 💧 None 💨 13 mph H 73%29.94 inHg

2:00 PM

Mostly sunny

80° 💧 None 💨 14 mph H 79%29.91 inHg

5:00 PM

Light rain

80° 💧 None 💨 12 mph H 78%29.88 inHg

8:00 PM

Light rain

79° 💧 None 💨 11 mph H 82%29.94 inHg

11:00 PM

Light rain

79° 💧 None 💨 11 mph H 81%29.97 inHg

Wednesday

2:00 AM

Light rain

79° 💧 None 💨 9 mph H 80%29.97 inHg

5:00 AM

Mostly clear night

80° 💧 None 💨 12 mph H 78%29.97 inHg

8:00 AM

Mostly sunny

80° 💧 None 💨 11 mph H 77%30.00 inHg

11:00 AM

Mostly sunny

81° 💧 None 💨 13 mph H 78%30.03 inHg

2:00 PM

Mostly sunny

81° 💧 None 💨 16 mph H 80%29.97 inHg

5:00 PM

Light rain

81° 💧 None 💨 16 mph H 80%29.94 inHg

8:00 PM

Light rain

80° 💧 None 💨 17 mph H 83%29.97 inHg

11:00 PM

Light rain

81° 💧 None 💨 17 mph H 83%30.03 inHg

Thursday

2:00 AM

Light rain

80° 💧 None 💨 15 mph H 83%29.97 inHg

5:00 AM

Light rain

79° 💧 None 💨 15 mph H 86%29.94 inHg

8:00 AM

Light rain

80° 💧 None 💨 18 mph H 82%30.00 inHg

11:00 AM

Light rain

80° 💧 None 💨 20 mph H 83%30.03 inHg

2:00 PM

Moderate rain

80° 💧 None 💨 20 mph H 83%29.97 inHg

5:00 PM

Moderate rain

79° 💧 None 💨 17 mph H 83%29.94 inHg

8:00 PM

Light rain

78° 💧 None 💨 13 mph H 88%30.00 inHg

11:00 PM

Moderate rain

77° 💧 None 💨 13 mph H 86%30.03 inHg

Friday

2:00 AM

Moderate rain

77° 💧 None 💨 12 mph H 87%30.00 inHg

5:00 AM

Moderate rain

78° 💧 None 💨 11 mph H 84%29.97 inHg

8:00 AM

Light rain

79° 💧 None 💨 15 mph H 81%30.00 inHg

11:00 AM

Light rain

80° 💧 None 💨 15 mph H 80%30.03 inHg

2:00 PM

Moderate rain

80° 💧 None 💨 17 mph H 79%29.97 inHg

5:00 PM

Mostly sunny

80° 💧 None 💨 17 mph H 80%29.97 inHg

8:00 PM

Partly cloudy night

81° 💧 None 💨 16 mph H 80%30.03 inHg

11:00 PM

Partly cloudy night

80° 💧 None 💨 15 mph H 83%30.03 inHg

Saturday

2:00 AM

Light rain

80° 💧 None 💨 13 mph H 79%30.00 inHg

5:00 AM

Light rain

79° 💧 None 💨 13 mph H 82%29.97 inHg

8:00 AM

Mostly sunny

80° 💧 None 💨 16 mph H 82%30.03 inHg

11:00 AM

Light rain

81° 💧 None 💨 16 mph H 77%30.03 inHg

2:00 PM

Sunny

80° 💧 None 💨 17 mph H 80%30.00 inHg

5:00 PM

Mostly sunny

80° 💧 None 💨 15 mph H 79%29.97 inHg

8:00 PM

Clear night

81° 💧 None 💨 15 mph H 79%30.00 inHg

11:00 PM

Clear night

80° 💧 None 💨 13 mph H 80%30.03 inHg

Sunday

2:00 AM

Mostly clear night

80° 💧 None 💨 14 mph H 80%30.00 inHg

5:00 AM

Mostly clear night

80° 💧 None 💨 14 mph H 80%30.00 inHg

8:00 AM

Mostly sunny

80° 💧 None 💨 15 mph H 79%30.03 inHg

11:00 AM

Mostly sunny

80° 💧 None 💨 17 mph H 80%30.06 inHg

2:00 PM

Mostly sunny

81° 💧 None 💨 15 mph H 78%30.00 inHg

8:00 PM

Light rain

79° 💧 None 💨 17 mph H 82%30.03 inHg

Monday

2:00 AM

Mostly clear night

80° 💧 None 💨 15 mph H 81%30.03 inHg

8:00 AM

Sunny

80° 💧 None 💨 16 mph H 79%30.06 inHg

2:00 PM

Mostly cloudy

80° 💧 None 💨 18 mph H 80%30.00 inHg

8:00 PM

Light rain

80° 💧 None 💨 19 mph H 83%30.03 inHg

Tuesday

2:00 AM

Light rain

79° 💧 None 💨 16 mph H 85%30.03 inHg

8:00 AM

Mostly sunny

81° 💧 None 💨 18 mph H 80%30.06 inHg

2:00 PM

Mostly cloudy

81° 💧 None 💨 19 mph H 81%30.00 inHg

8:00 PM

Mostly cloudy night

80° 💧 None 💨 18 mph H 81%30.03 inHg

Wednesday

2:00 AM

Mostly clear night

81° 💧 None 💨 15 mph H 77%30.00 inHg

8:00 AM

Mostly sunny

80° 💧 None 💨 20 mph H 81%30.03 inHg

2:00 PM

Mostly sunny

80° 💧 None 💨 20 mph H 81%29.97 inHg

8:00 PM

Mostly clear night

80° 💧 None 💨 18 mph H 77%30.03 inHg

Thursday

2:00 AM

Mostly clear night

80° 💧 None 💨 17 mph H 72%30.00 inHg

8:00 AM

Partly cloudy

79° 💧 None 💨 19 mph H 78%30.03 inHg

2:00 PM

Mostly sunny

80° 💧 None 💨 19 mph H 78%29.97 inHg

8:00 PM

Light rain

79° 💧 None 💨 18 mph H 78%30.00 inHg

Friday

2:00 AM

Mostly clear night

79° 💧 None 💨 18 mph H 77%30.00 inHg

8:00 AM

Mostly sunny

80° 💧 None 💨 17 mph H 75%30.03 inHg

2:00 PM

Mostly sunny

81° 💧 None 💨 17 mph H 73%29.97 inHg

8:00 PM

Light rain

81° 💧 None 💨 15 mph H 70%30.00 inHg

Saturday

2:00 AM

Light rain

78° 💧 None 💨 12 mph H 79%30.00 inHg

8:00 AM

Partly cloudy

79° 💧 None 💨 18 mph H 78%30.00 inHg

2:00 PM

Partly cloudy

80° 💧 None 💨 21 mph H 75%29.97 inHg

8:00 PM

Mostly clear night

79° 💧 None 💨 16 mph H 72%30.00 inHg

Sunday

2:00 AM

Mostly clear night

79° 💧 None 💨 15 mph H 66%30.00 inHg

8:00 AM

Mostly sunny

79° 💧 None 💨 14 mph H 75%30.00 inHg

2:00 PM

Sunny

80° 💧 None 💨 16 mph H 72%29.94 inHg

8:00 PM

Light rain

80° 💧 None 💨 15 mph H 69%29.97 inHg

Monday

2:00 AM

Light rain

78° 💧 None 💨 13 mph H 75%29.94 inHg

8:00 AM

Light rain

78° 💧 None 💨 14 mph H 76%29.97 inHg

2:00 PM

Light rain

80° 💧 None 💨 19 mph H 71%29.91 inHg

8:00 PM

Light rain

78° 💧 None 💨 15 mph H 74%29.94 inHg

Tuesday

2:00 AM

Light rain

78° 💧 None 💨 12 mph H 75%29.94 inHg

8:00 AM

Light rain

78° 💧 None 💨 14 mph H 73%29.97 inHg

2:00 PM

Mostly sunny

79° 💧 None 💨 15 mph H 72%29.91 inHg

In Kapaa and, more broadly, across the state of Hawaii: Skies will remain clear through the evening and into the early part of the night. Temperatures will stay mild to warm, holding steady around 80 degrees Fahrenheit. Winds will be light, coming from the northeast at around 6 mph, with gusts reaching up to 7 mph. No significant rainfall is expected during this time, so it should remain dry. Conditions will be quite comfortable, with clear skies and gentle breezes. Temperatures are expected to gradually stay steady or slightly decrease late into the night. Overall, it should be a calm and pleasant evening with no weather-related concerns.

15-Day Weather Outlook for Kapaa

TomorrowTomorrow

Light rain 80°/79° 💧 0.166 in 💨 14 mph

Wednesday, Sep 16Wed Sep 16

Light rain 81°/79° 💧 0.276 in 💨 17 mph

Thursday, Sep 17Thu Sep 17

Moderate rain 80°/77° 💧 0.740 in 💨 20 mph

Friday, Sep 18Fri Sep 18

Moderate rain 81°/77° 💧 0.622 in 💨 17 mph

Saturday, Sep 19Sat Sep 19

Light rain 81°/79° 💧 0.072 in 💨 17 mph

Sunday, Sep 20Sun Sep 20

Light rain 81°/79° 💧 0.079 in 💨 17 mph

Monday, Sep 21Mon Sep 21

Light rain 80°/80° 💧 0.047 in 💨 19 mph

Tuesday, Sep 22Tue Sep 22

Light rain 81°/79° 💧 0.411 in 💨 19 mph

Wednesday, Sep 23Wed Sep 23

Mostly sunny 81°/80° 💧 0.037 in 💨 20 mph

Thursday, Sep 24Thu Sep 24

Light rain 80°/79° 💧 0.058 in 💨 19 mph

Friday, Sep 25Fri Sep 25

Light rain 81°/79° 💧 0.106 in 💨 18 mph

Saturday, Sep 26Sat Sep 26

Light rain 80°/78° 💧 0.202 in 💨 21 mph

Sunday, Sep 27Sun Sep 27

Light rain 80°/79° 💧 0.016 in 💨 16 mph

Monday, Sep 28Mon Sep 28

Light rain 80°/78° 💧 0.401 in 💨 19 mph

Tuesday, Sep 29Tue Sep 29

Light rain 79°/78° 💧 0.293 in 💨 15 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Kapaa

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Kapaa

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 11:00 PM

PM2.5 Fine particles Good 1,6µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 6,5µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 78,6µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,2µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Kapaa

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 11,4Extreme 🙂Fair

Tomorrow UV 11,1Extreme 🙂Fair

Wednesday UV 11,1Extreme 😊Good

Thursday UV 6,0High 🙂Fair

Friday UV 6,0High 🙂Fair

Saturday UV 6,0High —Unavailable

Sunday UV 6,0High —Unavailable

Today's weather health advice Open today's recommendations.

Extreme UV risk

Avoid direct sun around midday. Use SPF 50+ sunscreen, a hat, protective clothing and sunglasses.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Kapaa

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · KAPAA, HAWAII

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 2:00 AM–3:00 AM.

95/100Best-hour score

BEST TIME TONIGHT 2:00 AM–3:00 AM Astronomical darkness: 7:56 PM–5:09 AM

☁ Cloud cover 7% Real hourly forecast for the best viewing hour.

☾ Moonlight 14% Waxing Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 57° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min74%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Kapaa were last refreshed today at 10:54 PM. The current forecast period extends through 20/09/2026 at 2:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.