Hawaii weather

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Below are the temperatures expected today at popular destinations in Hawaii. Select a destination to compare today's forecast with average weather conditions.

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The weather guide for Hawaii shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

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Which is the hottest month in Hawaii?

The hottest time of year in Honolulu, Oahu, Hawaii is normally September. Expect maximum daytime temperatures to reach 30°C with high heat and humidity.

Which month has the most rain in Hawaii?

In terms of rainfall, December is usually the wettest month in Honolulu, Oahu, Hawaii with 82mm on average. There are normally 11 days in December with some rain.

When is it sunniest in Hawaii?

The sunniest time of year in Honolulu, Oahu, Hawaii is normally September with bright sunshine on average for 74% of daylight hours; that's 9 hours of sunshine per day.

When is the sea warmest in Hawaii?

The sea is usually at its warmest in Honolulu, Oahu, Hawaii in September when the water temperature reaches 27°C.

Metric (°C / mm)  |  Imperial (°F / inches)

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Compare Hawaii weather with the USA

Below the Hawaii weather chart shows average maximum daytime temperature for Hawaii, USA (Honolulu, Oahu) and the USA (Washington).

Maximum daytime temperature (°C)

Hawaii, USA (Honolulu, Oahu)
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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Hawaii weather overview

These mountainous islands, America's 50th state, lie in the centre of the Pacific Ocean, five hours' flying time from mainland United States. Their tropical oceanic climate, tempered by trade winds, has combined with spectacular scenery and colourful traditions to create phenomenal growth in tourism over the past three decades.

The south and west coasts of the islands - where most holiday resorts are located - receive a lot of sunshine tempered by sporadic rain throughout the year. There is a rainy season from December to March though, ironically, the tourism high season, when the scenery is at its most lush and long, hot days break up the rainy spells.

On the islands' mountainous northeast coasts it's a different story: these are exposed to the full force of the Pacific trade winds and experience much heavier rainfall.

The mountains of Kauai house one of the wettest places on earth. Cyclones can hit the islands from May to November but these are comparatively rare. Temperatures are high throughout the year but never excessive, as humidity levels are manageable.

What to pack for Hawaii weather

Pack light clothes with cover-ups for the winter months.

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