Live Weather & Forecast
Weather in Kapaa
Hawaii, United States · Real-time conditions & 3-day outlook
20°C
Feels like 20°C
68°F / Feels 68°F
Patchy light rain
Kapaa, Hawaii
🌙 Nighttime
Updated: 2026-04-12 04:30
Humidity
94%
Wind
7.9 km/h SW
Wind Gust
10 km/h
Pressure
1014 mb
Visibility
16 km
UV Index
0
(Low)
Precipitation
1.03 mm
Cloud Cover
0%
Dew Point
19.4°C
Wind Degree
227°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
128.9 μg/m³
NO₂
1.6 μg/m³
O₃
39 μg/m³
SO₂
1.1 μg/m³
PM 2.5
2.5 μg/m³
PM 10
3.2 μg/m³
Weather Alerts 1
Met
· Severe · Future
Flood Watch issued April 11 at 1:43PM HST until April 13 at 6:00PM HST by NWS Honolulu HI
...FLOOD WATCH IN EFFECT FOR ALL HAWAIIAN ISLANDS THROUGH 6 PM HST MONDAY... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...The state of Hawaii. * WHEN...Through Monday afternoon. * IMPACTS...Significant flooding may occur due to excessive rainfall and overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or lo...
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Today's Hourly Forecast
24-hour breakdown for Kapaa, Hawaii
12 AM
22°
Light drizzle
1 AM
22°
Light rain shower
2 AM
21°
Patchy light rain
3 AM
21°
Light rain
4 AM
20°
Patchy light rain
5 AM
21°
Patchy rain nearby
6 AM
21°
Patchy rain nearby
7 AM
22°
Patchy rain nearby
8 AM
21°
Patchy light drizzle
9 AM
21°
Patchy light drizzle
10 AM
21°
Patchy light rain
11 AM
22°
Light rain shower
12 PM
22°
Patchy light drizzle
1 PM
22°
Patchy rain nearby
2 PM
22°
Light drizzle
3 PM
22°
Light drizzle
4 PM
21°
Light drizzle
5 PM
21°
Patchy rain nearby
6 PM
21°
Patchy light rain
7 PM
20°
Moderate rain
8 PM
20°
Moderate rain
9 PM
20°
Light rain
10 PM
20°
Light rain
11 PM
20°
Patchy light rain
3-Day Forecast
Daily overview for Kapaa, Hawaii
Today
Heavy rain
22°
/
20°
🌧️ 96% chance of rain
💧 Avg. humidity: 88%
💨 Max wind: 11.2 km/h
🌧️ Total precip: 23.08 mm
☀️ UV Index: 0.5
🌅 Sunrise: 06:20 AM
🌇 Sunset: 06:56 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Moderate rain
23°
/
20°
🌧️ 89% chance of rain
💧 Avg. humidity: 85%
💨 Max wind: 10.8 km/h
🌧️ Total precip: 9.33 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:19 AM
🌇 Sunset: 06:57 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Patchy rain nearby
25°
/
22°
🌧️ 85% chance of rain
💧 Avg. humidity: 82%
💨 Max wind: 10.4 km/h
🌧️ Total precip: 4.92 mm
☀️ UV Index: 2.5
🌅 Sunrise: 06:18 AM
🌇 Sunset: 06:57 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit Kapaa
Plan your trip to Kapaa, United States around the most favorable weather conditions.
Peak Season
November – April
Dry season — low humidity, clear skies, comfortable temperatures.
Shoulder Season
May, October
Fewer crowds, moderate prices, mild weather.
Off Season
June – September
Wet/monsoon season; heavier rainfall possible.
Frequently Asked Questions
What is the current weather in Kapaa?
Current conditions in Kapaa: Patchy light rain, temperature 20°C, humidity 94%.
What is the best time to visit Kapaa?
The best time to visit Kapaa is typically November – April. Dry season — low humidity, clear skies, comfortable temperatures.
What is the climate like in Kapaa?
Kapaa is located at approximately 22.1° latitude. It has a tropical or subtropical climate with wet and dry seasons.
Does it rain a lot in Kapaa?
The wettest period in Kapaa is typically during June – September. Wet/monsoon season; heavier rainfall possible.
What should I pack for a trip to Kapaa?
For visits to Kapaa during November – April: light clothing and sun protection. For June – September: layers and a waterproof jacket are recommended.
What country is Kapaa in?
Kapaa is located in United States, in the state of Hawaii.
What are the public holidays in Kapaa in 2026?
View the 2026 public holidays for Kapaa on our Holidays page.
What are the GPS coordinates used for the weather forecast in Kapaa?
The weather forecast for Kapaa uses coordinates 22.0833, -159.3464.