Hawai'i Kai weather
Loading live data…Latest for Hawai'i Kai: American (NOAA GFS): 75° Partly cloudy · European (ECMWF): 75° Light drizzle.
The weather map: all three models at once
NWS, American, European side by side around Hawai'i Kai and nearby towns.Live rain radar →Next 14 hours
consensus of the three models7-day forecast
where the models agree, and where they splitHawai'i Kai, HI is at its warmest in Sep (average highs near 83°F) and coldest in Jan (lows around 68°F), with roughly 35 in of precipitation across the year. Below, compare what NWS, American, European forecast for Hawai'i Kai right now, and see exactly where they disagree.
Hawai'i Kai climate by month
average daytime high and overnight low across a typical yearWhich forecast is most accurate in the US?
CheckWeather Score — graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 40 cities. Lower error means a higher score. The apps you know (AccuWeather, Apple Weather, The Weather Channel) are built on these models.
Common questions
What's the weather in Hawai'i Kai today?
Will it rain in Hawai'i Kai today or tomorrow?
Which forecast is most accurate for Hawai'i Kai?
What is the warmest month in Hawai'i Kai?
How cold does Hawai'i Kai get?
How much rain does Hawai'i Kai get?
The forecasts Americans check
The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.