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Hawaii climate: when to go to Hawaii

The Hawaiian Islands are located just south of the Tropic of Cancer, this means that the climate of the islands is sub-tropical climate, with mild temperatures and little marked seasonal variations.

The climate rather than by differences in temperature is characterized by the seasonal difference in rainfall, in the islands there are two climatic seasons, a dry season that corresponds to the months between May and October and a rainy season from November to April.

Temperatures, as already mentioned, have minimal seasonal variations, for example, in Honolulu, the average maximum temperatures vary between 26°C in January and 31°C in the summer months, while the average minimum temperatures vary between 18°C in winter and 23°C in summer.

Rainfall varies greatly depending on exposure to the winds, the areas exposed to the winds of the northeast are much more rainy, on the highest peaks of the mountains Mauna Kea and Mauna Loa, in winter there is snow. Hurricanes are an infrequent event.

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.


Because of their mild climate any time of year is good to visit the Hawaiian Islands. The best time for a trip to Hawaii Islands are the months between April and September.


HONOLULU (4 metres)
Month Average low (°C) Average high (°C) Precip. (mm) Precip. days
January 19,1 26,7 58,7 8,5
February 18,9 26,8 50,5 7,4
March 19,8 27,3 51,3 8,8
April 20,8 28,2 16,0 7,5
May 21,6 29,2 15,7 5,8
June 23,0 30,6 6,6 5,7
July 23,6 31,1 13,0 7,1
August 23,9 31,5 14,2 5,6
September 23,6 31,4 17,8 6,9
October 23,0 30,4 46,7 7,6
November 21,9 28,8 61,5 8,8
December 20,2 27,3 82,3 9,7
YEAR 21,6 29,1 434,3 89,4
Month Sea Water Temperature °C
January 24
February 24
March 24
April 25
May 26
June 26
July 27
August 27
September 27
October 27
November 26
December 25

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