Perhaps the most worrisome aspect of planning a trip to Hawaii is figuring out what the weather will be like during your stay. There are several sources for weather forecasts, and many of them are inaccurate. Weather in Hawaii is very localized, so you need to make sure you’re looking at a point forecast. The best source for forecasts is the National Weather Service Forecast in Honolulu. The worst I’ve seen is the iPhone’s weather forecasting. I’m not sure what data provider it’s utilizing.
More often than not the forecast will call for a mix of sun and clouds and a 40-60% chance of rain. In Hawaii, cloud free skies are uncommon – there are usually puffs of clouds somewhere. Similarly, days when the entire sky is blanketed are also uncommon. The below photo represents what I consider the typical “cloudy” day in Hawaii. The clouds are moving through fairly rapidly, with some localized rainfall, and areas of sun. On a day like this the weather forecast would probably have stated there’s a 50% chance of rain.
Of course the time to worry about weather, if you’re so inclined, is when you’re deciding where to stay. Our Hawaii Weather Guide will give you a good idea of seasonal rainfall in all the different regions of Hawaii.