The archipelago of the fiftieth state actually spans more than 1500 miles and includes hundreds of islands, meaning that there is quite a complex climate that makes up Hawaii weather as a whole. That said, there are only a few main islands that are inhabitable, including the Big Island, which is the largest in the chain, which can help to narrow the conditions a little so that you can better plan what you need to pack.
Still, you need to keep in mind that the Big Island has a windward (east) side and a leeward (west) side, as well as a rainforest, and a range of elevations, including the top of a volcano. Therefore, you’ll need to keep those Hawaii weather details in mind to help you to determine what extra supplies you’ll need to bring with you on your vacation.
The Hawaii weather is considered to be tropical, but it will change from one place to the next, depending on where you are on the Big Island. On average, the island receives about 20 inches of rain every year in the areas of the lee coasts and higher on the volcano. Equally, though, the windward mountain slopes of about 4,000 to 6,000 feet will see a much larger amount at 300 inches.
On the north coast of the Big Island, the town of Hilo receives the trade winds from the east, as well as about 126 inches of rain every year. The rain continues throughout the year, in that there is no rainy nor dry season. The least amount of rain falls in June with an average of 7.3 inches, and the largest amount falls in November, where the Hawaii weather brings 15.5 inches of rain.
Overall, no matter what part of the Big Island you visit, Hawaii weather is rainier during the winter months, with the one exception of the Kona coast.
On the Big Island in the area of the resorts, you’ll find that the temperatures are warm and mild year round. The highs in the summer months are in the mid to high 80s, and the lows occur in the early mornings in the mid 70s. In the winter, though, the temperatures aren’t all that much different, with highs from the high 70s to around 80 degrees. The temperatures are notably lower in the mountains of the volcanoes, where the highs year round are typically in the 50s and the lows are in the 30s during the night.