When does Hawaii have its best weather? Some tips for travelers.
by: Chris Baileyposted: Sat Oct 31, 2009 at 07:35 AM
HAWAII Magazine reader Bill Parker wrote us with a question about our sun and surf :What are the best months, weather-wise, to visit Hawaii? I also would like to know the water temperatures for Honolulu and the island of Kauai.
You ask. We answer.
Rarely is there “bad” Hawaii weather—high-pressure zones and resulting tradewinds make Hawaii’s climate consistently temperate.
While it’s impossible to predict the weather, know that annual trends in Hawaii’s average temperatures aren’t that different from the rest of the country: Warmer temperatures come during the traditional summer months of June through September, while the winter season of December to February means cooler climes.
Don’t believe us? Take a look at the chart below—compiled from data collected by the National Weather Service in 2008.
Average Monthly Temperatures for 2008 (in degrees Fahrenheit)
| Honolulu, Oahu | Kahului, Maui | Kona, Big Island | Lihue, Kauai | |
| January | 73.5 | 68.9 | 74.3 | 71.4 |
| February | 74.8 | 68.6 | 74.6 | 73 |
| March | 77.3 | 71.7 | 76.5 | 75.3 |
| April | 77.2 | 74.3 | 77.1 | 74.2 |
| May | 79.2 | 76.2 | 77.2 | 76.4 |
| June | 80.4 | 77.4 | 76.5 | 77.6 |
| July | 82.2 | 78.5 | 79.8 | 79.3 |
| August | 81.6 | 79.2 | 79.6 | 80.7 |
| September | 80.4 | 78.1 | 79.1 | 78.5 |
| October | 79.7 | 77.9 | 79.7 | 77.7 |
| November | 77.2 | 74.9 | 77.4 | 74.2 |
| December | 75.3 | 73.5 | 75.7 | 72.5 |
As you can see, the greatest climate change during the year comes between the summer and winter months. In places like Kahului, Maui, the decline in temperature is as much as 10 degrees Fahrenheit—dropping from an average temp of 79.2 in August to a chilly (for Hawaii) 68.9 average in January.
You won’t need an overcoat for our brand of cold weather. Still, we suggest packing extra layers—as temperatures can drop another 10 degrees at night.
Hawaii’s water temperatures mirror climate trends—expect warmer temps in the summer and cooler in the winter.
According to data from the National Oceanic Atmospheric Association (NOAA), the warmest water off Honolulu can be found from July to September—averaging 80 to 81 degrees Fahrenheit. However, Honolulu water temperatures drop to only 76 degrees in January, according to NOAA.
Click here for a complete list of water temperatures from NOAA-monitored stations across the state, updated daily. Or, click here for water temps across Hawaii in Google Maps form.
Bottom line: If you’re looking for the warmest climate and ocean temperatures during your next Hawaii vacation, stick to visiting in the summer.
But really, it's great here all year, folks.
Photo: Krystal Moore










In the November/December 2009 issue of HAWAII Magazine, we take you, in words and pictures, to Makawao (pronounced Mah-kah-Wow!). It's Maui's historic cowboy town, filled with both horses and homegrown boutiques.
I am trying not to get used to this.
Of course, there’s a waiter bringing by drinks and snacks, plus a full breakfast and lunch menu-—not to mention a swim-up bar with underwater bar stools.
The humpback whales are back!
Thinking of a Hawaii vacation sometime in 2010?
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George Lanakilakekiahialii Naope, one of hula’s most revered kumu hula and co-founder of the Merrie Monarch Festival, passed away today at his residence in Hilo after a long battle with cancer. He was 81.
Naope received numerous awards in his lifetime, including the National Heritage Fellowship Award from the National Endowment for the Arts in 2006. Hula festivals were also named in his honor, including the George Naope Northwest Hula Invitational in Seattle, Wash., and the 
The purpose of Lee’s three-week stay in Kalaupapa was to assess the condition of the headstones in the peninsula’s graveyard. As a member of the NPS conservation team, she counted and measured the cracks on each headstone.
The "train to Flavortown" has finally made a stop in Hawaii.
HAWAII Magazine subscriber Donald Hinds of Florida recently called us to ask:
We’ve included a picture of a couple of the t-shirts, above. A different slogan such as
HAWAII Magazine reader Raymond Bertrand of Grapevine, Texas, sent us an e-mail with the subject line: “Help! Help!”:
Claims Kukui, “Unlike other mai tai mixes that use corn syrup for sweetness, our Kukui Brand insures sweetness all the way through the drink because there is no settling of the sweetness to the bottom of the glass like with corn syrup.”

