Live Weather & Forecast

Weather in Waipahu

Hawaii, United States · Real-time conditions & 3-day outlook

Flag of United States
Light rain
22°C
Feels like 25°C
72°F / Feels 77°F
Light rain
Waipahu, Hawaii
🌙 Nighttime
Updated: 2026-04-12 21:00
💧
Humidity
78%
💨
Wind
7.2 km/h ENE
🌬️
Wind Gust
9.5 km/h
🌡️
Pressure
1017 mb
👁️
Visibility
13 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
2.69 mm
☁️
Cloud Cover
100%
💦
Dew Point
18.6°C
🌐
Wind Degree
56°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
132.9 μg/m³
NO₂
4.3 μg/m³
O₃
40 μg/m³
SO₂
1.7 μg/m³
PM 2.5
4.7 μg/m³
PM 10
6.3 μg/m³

Weather Alerts 2

Met · Severe · Future
Flood Watch issued April 12 at 3:14AM 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 island of Kauai in Kauai County, The island of Niihau in Kauai County, Oahu, Maui, Molokai, Lanai, Kahoolawe, and the Big Island. * WHEN...Through Monday afternoon. * IMPACTS...Significant flooding may occur due to excessive rainfall and o...

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Effective: 2026-04-12T03:14:00-10:00  ·  Expires: 2026-04-12T18:15:00-10:00
Met · Severe · Future
Flood Watch issued April 12 at 3:00PM HST until April 13 at 6:00AM HST by NWS Honolulu HI

...FLOOD WATCH IN EFFECT FOR KAUAI OAHU MOLOKAI AND MAUI THROUGH 6 AM HST MONDAY... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Kauai, Oahu, Maui, Molokai, Lanai, Kahoolawe, and Niihau. * WHEN...Through 6 AM HST Monday morning. * IMPACTS...Flood prone roads and other low lying areas may be closed due to elevated runoff and overflowing streams. Urban areas may re...

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Effective: 2026-04-12T15:00:00-10:00  ·  Expires: 2026-04-13T06:00:00-10:00

Today's Hourly Forecast

24-hour breakdown for Waipahu, Hawaii

12 AM
Partly Cloudy
24°
Partly Cloudy
💧 89% 💨 5.4 km/h
1 AM
Light rain shower
23°
Light rain shower
💧 90% 💨 6.1 km/h 🌧️ 100%
2 AM
Light rain shower
23°
Light rain shower
💧 90% 💨 5.8 km/h 🌧️ 100%
3 AM
Light rain shower
23°
Light rain shower
💧 89% 💨 6.8 km/h 🌧️ 100%
4 AM
Light rain shower
23°
Light rain shower
💧 91% 💨 7.2 km/h 🌧️ 100%
5 AM
Light rain shower
22°
Light rain shower
💧 89% 💨 9.7 km/h 🌧️ 100%
6 AM
Moderate rain
21°
Moderate rain
💧 91% 💨 11.2 km/h 🌧️ 100%
7 AM
Moderate rain
21°
Moderate rain
💧 95% 💨 14.4 km/h 🌧️ 100%
8 AM
Moderate rain
20°
Moderate rain
💧 95% 💨 12.6 km/h 🌧️ 100%
9 AM
Moderate rain
20°
Moderate rain
💧 94% 💨 6.8 km/h 🌧️ 100%
10 AM
Moderate rain
20°
Moderate rain
💧 94% 💨 6.8 km/h 🌧️ 100%
11 AM
Light rain shower
22°
Light rain shower
💧 92% 💨 6.1 km/h 🌧️ 100%
12 PM
Light rain shower
22°
Light rain shower
💧 92% 💨 5 km/h 🌧️ 100%
1 PM
Light rain shower
22°
Light rain shower
💧 92% 💨 4.7 km/h 🌧️ 100%
2 PM
Light rain shower
22°
Light rain shower
💧 93% 💨 6.5 km/h 🌧️ 100%
3 PM
Moderate rain
21°
Moderate rain
💧 94% 💨 6.5 km/h 🌧️ 100%
4 PM
Moderate or heavy rain shower
21°
Moderate or heavy rain shower
💧 96% 💨 5.8 km/h 🌧️ 100%
5 PM
Moderate or heavy rain shower
21°
Moderate or heavy rain shower
💧 96% 💨 7.6 km/h 🌧️ 100%
6 PM
Light rain shower
21°
Light rain shower
💧 92% 💨 10.4 km/h 🌧️ 100%
7 PM
Moderate or heavy rain shower
21°
Moderate or heavy rain shower
💧 90% 💨 9.4 km/h 🌧️ 100%
8 PM
Moderate or heavy rain shower
20°
Moderate or heavy rain shower
💧 90% 💨 13 km/h 🌧️ 100%
9 PM
Light rain
22°
Light rain
💧 78% 💨 7.2 km/h 🌧️ 100%
10 PM
Light rain
20°
Light rain
💧 95% 💨 10.1 km/h 🌧️ 100%
11 PM
Light rain
20°
Light rain
💧 94% 💨 3.2 km/h 🌧️ 100%

3-Day Forecast

Daily overview for Waipahu, Hawaii

Today
Heavy rain
Heavy rain
22° / 20°
🌧️ 99% chance of rain
💧 Avg. humidity: 92%
💨 Max wind: 14.4 km/h
🌧️ Total precip: 63.56 mm
☀️ UV Index: 0.3
🌅 Sunrise: 06:15 AM
🌇 Sunset: 06:50 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Moderate rain
Moderate rain
23° / 20°
🌧️ 95% chance of rain
💧 Avg. humidity: 91%
💨 Max wind: 9 km/h
🌧️ Total precip: 11.27 mm
☀️ UV Index: 0.5
🌅 Sunrise: 06:14 AM
🌇 Sunset: 06:51 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Patchy rain nearby
Patchy rain nearby
24° / 22°
🌧️ 87% chance of rain
💧 Avg. humidity: 85%
💨 Max wind: 4 km/h
🌧️ Total precip: 2.77 mm
☀️ UV Index: 1.2
🌅 Sunrise: 06:13 AM
🌇 Sunset: 06:51 PM
🌙 Waning Crescent
🌑 Moon: 15% lit

Best Time to Visit Waipahu

Plan your trip to Waipahu, 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.
← Back to Waipahu 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Waipahu?
Current conditions in Waipahu: Light rain, temperature 22°C, humidity 78%.
What is the best time to visit Waipahu?
The best time to visit Waipahu is typically November – April. Dry season — low humidity, clear skies, comfortable temperatures.
What is the climate like in Waipahu?
Waipahu is located at approximately 21.4° latitude. It has a tropical or subtropical climate with wet and dry seasons.
Does it rain a lot in Waipahu?
The wettest period in Waipahu is typically during June – September. Wet/monsoon season; heavier rainfall possible.
What should I pack for a trip to Waipahu?
For visits to Waipahu during November – April: light clothing and sun protection. For June – September: layers and a waterproof jacket are recommended.
What country is Waipahu in?
Waipahu is located in United States, in the state of Hawaii.
What are the public holidays in Waipahu in 2026?
View the 2026 public holidays for Waipahu on our Holidays page.
What are the GPS coordinates used for the weather forecast in Waipahu?
The weather forecast for Waipahu uses coordinates 21.3867, -158.0092.