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Waipio weather

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AmericanNOAA GFS
71°
Overcast
Feels 75° · Wind 6 mph · Humidity 80%
EuropeanECMWF
68°
Partly cloudy
Feels 71° · Wind 5 mph · Humidity 94%

Latest for Waipio: American (NOAA GFS): 71° Overcast · European (ECMWF): 68° Partly cloudy.

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Waipio weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Waipio weather in numbers

from 30 years of measured normals

Waipio swings 21°F across the year, from 83°F highs in September to 62°F lows in January, and December is usually the wettest month in a year that brings about 38 in of precipitation.

Warmest month
September
83°F average high
Coldest month
January
62°F average low
Wettest month
December
38 in a year
Below freezing
Never
overnight lows stay above 32°F
Comfortable
4 months
January, February, March and April
Residents
12,000
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The weather map: all three models at once

NWS, American, European side by side around Waipio and nearby towns.Live rain radar →
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Waipio hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Waipio 10-day forecast, out to 14 days

where the models agree, and where they split

Waipio, Hawaii (HI) is at its warmest in Sep (average highs near 83°F) and coldest in Jan (lows around 62°F), with roughly 38 in of precipitation across the year. Below, compare what NWS, American, European forecast for Waipio right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Waipio climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
76°
62°
Feb
75°
64°
Mar
76°
64°
Apr
77°
65°
May
78°
66°
Jun
80°
68°
Jul
81°
69°
Aug
82°
70°
Sep
83°
69°
Oct
83°
68°
Nov
79°
67°
Dec
76°
63°

Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.

How the weather around Waipio has changed since 1995

Waipio sits in the same roughly 50 km square of NASA's reanalysis as Honolulu. That square ran 1.0°F warmer in 2015-2024 than in 1995-2004. See the full 30-year picture on the Honolulu page.

Which forecast is most accurate in the US?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
93
/100rank #1
91±0.9°F97±1.1 mph9396% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
82
/100rank #2
83±1.7°F94±2.0 mph7184% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in Waipio today?
On this page we show what NWS, American, European each forecast for Waipio today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Waipio today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Waipio and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Waipio?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Waipio forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Waipio?
September is typically the warmest month in Waipio, with average highs around 83°F.
How cold does Waipio get?
The coldest month in Waipio is January, when overnight lows average about 62°F.
How much rain does Waipio get?
Waipio sees roughly 38 in of precipitation a year, with December usually the wettest month.

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