Honolulu weather

Our guide to the weather in Honolulu during August

28

Average high

6

UV Index

59mm

Monthly rainfall

75%

Humidity

We've looked at the most up-to-date weather data for Honolulu, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Honolulu weather in August.

How warm is it in Honolulu during August?

The temperature is extremely stable in August with average highs of 28℃ and lows just 4℃ lower at 24℃. Of course, the high humidity will make it feel even hotter. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Honolulu during August?

On average, there will be 2 rainy days during the month, amounting to 59.1mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. Due to the high temperature and humidity, you might expect lots of thunderstorms, however they're actually fairly infrequent at this time of year. On average, August will see just 1 days that produce a storm.

Is it windy in Honolulu during August?

You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during August. The high humidity and warm temperature will make the breeze feel warm, so any cooling effect will be limted.

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Weather in Honolulu

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