HAWAII CLIMATE. Weather, Temperature, Rainfall: when to go to Hawaii

The islands of Hawaii have a sub-tropical climate with two seasons, a summer season, between May and October and a winter season between November and April, minimum are the temperature differences between the various seasons. Summer is characterized by pleasant temperatures and low humidity along the coast, the average maximum summer temperatures are around 30-31°C, while the average minimum temperature is around 23°C. The winter presents average maximum temperatures between 27°C and 26°C, while the average minimum in winter is 18-19°C, this is the rainy period, the rainest months are between November and January.

The rainfall varies widely depending on the exposure to winds, areas exposed to the north-east winds are much more rainy, on the highest peaks of the mountains Mauna Kea and Mauna Loa, in winter there is snow. The areas under the wind, that is the south-western coasts are dry and sunny. Regarding the average annual rainfall it varies from 220 mm in Kawaihae, on the island of Hawaii, to 11,280 mm of Mount Waialeale on the island of Kauai, one of the rainest places on Earth. In the city of Honolulu, the average annual rainfall is 550 mm, while in the city of Hilo on the island of Hawaii is over 3,200 mm.

The sea water surface temperature varies between 24°C in February and 27°C in September and October.

The best time for a trip to Hawaii Islands are the months between April and September.

Honolulu	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Rain (mm)	90	56	55	39	28	12	15	11	20	58	76	96
Min Temp (°C)	18	18	19	20	21	22	23	23	23	22	21	19
Max Temp (°C)	26	27	27	28	29	30	30	31	31	30	29	27

Honolulu	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea Water Temperatures (°C)	24	24	24	25	26	26	27	27	27	27	26	25

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