Kauai, Hawaii Weather Guide

What’s the weather like in Kauai, Hawaii?

Temperatures

Kauai’s weather is warm all year round with daytime high temperatures ranging from 78F in the “colder” months to 88F in the hotter months.

Kauai Hawaii Weather Guide for the Kauai Vacation Rental

Hawaii’s proximity to the equator means that the its weather is tropically warm and consistent throughout the year. Flowers are always in bloom in Hawaii.

Typically December, January and February are the coolest months, while July, August and September are the warmest months.

Evening low temperatures range from 65F in the cooler months to 75F in the warmer months.

Rainfall

The months of April – October tend to have less rain than the months of November – March. The following chart shows how the average rainfall varies by month and by Hawaiian Island.

Hawaii Rainfall Chart
This chart indicates the average rainfall trends by island. The data was collected at the major Hawaii airports. Click this link to get more information and data to help you understand Hawaii rainfall trends.

An interesting aspect about Kauai’s rainfall is that most if the Hawaiian Island precipitation falls overnight. Even if a rain shower should interrupt your day, it rarely lasts more than a few minutes before the glorious sunshine breaks through again. You may even be treated to a rainbow afterwards.

Micro-climates 

Each Hawaii island boasts its own micro-climate depending on where you stay. The island weather is very much influenced by the trade winds which generate windward and leeward regions. In general, the north and east facing coasts tend to get more rain than the south and west-facing coasts. From the following satellite view of Hawaii, notice how the north and east sides are very green in comparison to the other sides. That’s an indicator of the rainfall levels.

Satellite view of the Hawaiian Islands

The tall volcanic mountains of Hawaii are significantly colder than the beach elevations. With elevations over 13,000 feet above sea level, it’s not unusual for Mauna Kea and Mauna Loa on the Big Island to get snow in the winter. At an elevation over 10,000 feet above sea level Haleakala on Maui can also get snow.

Kauai’s Weather

Average high and low temperatures by month for Kauai. Data sourced by GoVisitHawaii.com from Weather.com
Average high and low temperatures by month for Kauai. Data sourced by GoVisitHawaii.com from Weather.com

Princeville and Hanalei on the North Shore of Kauai brings a mixture of sunshine and showers needed to make all of the wonderful rainbows and waterfalls.

The East and South shores like Poipu are likely to offer more sunshine and less rainfall.

Take notice that the popular resort area of Poipu is the driest region, followed by the east side towns of Kapaa and Lihue where many hotels and Poipu vacation rentals Like our is.

 

 

Frequently asked Hawaii weather questions:

When is the best time to go to Kauai?

Anytime is a great time to go to Kauai. We’ve been to Kauai several times in every season and enjoyed wonderful weather. For the best weather and prices, we recommend visiting Hawaii in mid/late April, May, early/mid June, September and October.

Is Kauai cold in the winter?

We don’t think it’s cold. Look at the above weather charts which indicate that even in the coldest months, the average daytime high temperatures average between 78 and 82F, which is quite pleasant. You’d have to visit Kauai during a particularly odd weather pattern to be cold in Kauai. During winter months, you might want to have a light sweater to wear in the evenings, but during the daytime, you’ll most likely enjoy “bikini weather” while playing in the ocean.

Is Kauai’s weather humid?

The degree to which a person feels humidity depends on the humidity of the climate where they live. For example, someone who lives in the humid southeastern United States probably won’t notice much humidity, while someone from an arid southwestern state may take more notice in the humidity.

If the trade winds are blowing, which they normally do, the breeze helps to keep you comfortable in the humid environment.

Do I need to be concerned about rain in Kauai during the winter months?

As previously mentioned, the north and east sides of the island tend to get more rain than the south and west sides of the islands. If you plan to stay on the south and west sides of the islands, you’ll likely minimize your chances of experiencing rain.

Is winter a good time to go to Kauai?

Yes!

Are the northern Hawaiian Islands colder than the southern Hawaiian Islands?

There’s perhaps just a few degrees difference between the extremes, but nothing drastic. If you flew from one island to the other, you probably wouldn’t notice a difference. Review the above temperature charts for Kauai, the northernmost Hawaiian Island, to the Big Island, the southernmost Hawaiian Island for comparison. Note that there’s very little difference.

What’s the water temperature in Kauai? Can I swim in Kauai in the colder winter months?

You can swim in the ocean in Kauai throughout the year — even in winter months. The average ocean temperature for Kauai is 78F and ranges from a low of 76F to 81F.

So with this information at hand You can’t go wrong by reserving your time at our Kauai Vacation Rental, Manualoha Condo 601 for any time you are looking to go. It is in the Southern part of Kauai along the beaches of Poipu, Kauai.

Flood damaged Kauai highway opens to residents Friday

Flood Damaged Kauai

HONOLULU (KITV) – 5/4/2018

A transportation lifeline for isolated residents on Kauai’s north shore look forward to a bit of relief on Friday. The Hawaii Department of Transportation (HDOT) and the County of Kauai announced on Thursday that they will reopen and restore the 2-mile stretch of Kuhio Highway damaged in April floods, beginning Friday, May 4, 2018.Flood Damage Kauai Vehicle Covered With Water

“This is a significant development, and I’d like to thank our entire team of responders who have worked diligently towards reopening a safe pass way for our isolated residents. However, there is still much work left to be done in the Wainiha-Haena area. And while we continue to conduct these emergency operations, this area will be limited to residents only until further notice. We appreciate everyone’s understanding, residents and visitors alike,” said Mayor Bernard Carvalho.

The roads closed after heavy rains on April 14, 2018 flooded and damaged the highway. HDOT says there are many conditions regarding opening this single lane route on Kuhio Highway (Route 560) from Waikoko to Wainiha, including:

It is for local traffic only, and residents need to prove it before they can get a placard to display on their dashboard. Placards will be issued to Wainiha and Haena residents only.

To receive a placard, residents must bring their vehicle and be prepared to prove residency. Placards may be picked up from Planning Director Mike Dahilig at the County office at the Hanalei Colony Resort between 1:30 p.m. to 5:30 p.m. Beginning on Thursday, May 3, and between 9:00 a.m. to 11:00 a.m. and 1:30 p.m. to 5:30 p.m. on Friday, May 4.

There is a 10,000-pound weight restriction, which means only passenger vehicles such as sedans, SUVs and pickup trucks will be allowed on the highway. North Shore residents seeking access to the single lane route are advised to check their individual vehicle weight, which can be found on the vehicle’s registration. All Terrain Vehicles (ATV) and Utility Task Vehicles (UTV) will not be permitted to travel on the single lane route.

If you need to access the area for work (like insurance adjusters, utility company personnel, private contractors, and others) must coordinate their travel needs through the Kauai Emergency Management Agency at 808-241-1800. Those people with approved access will need to have their name on a list provided to the personnel at the checkpoints in order to be allowed through.

There’s a timeline for usage of the road:

  • 6 a.m. Waikoko to Wainiha
  • 6:30 a.m. Wainiha to Waikoko, to include shuttle
  • 12 p.m. Waikoko to Wainiha, to include shuttle
  • 12:20 p.m. Wainiha to Waikoko,
  • 12:40 p.m. Waikoko to Wainiha
  • 1 p.m. Wainiha to Waikoko to include shuttle
  • 6 p.m. Wainiha to Waikoko
  • 6:30 p.m. Waikoko to Wainiha, to include shuttle

The road will only open if the weather permits. Should the local access be suspended due to weather.  HDOT and the County of Kauai will provide updated information through the media and social media accounts.

“Safety is our first priority as we continue recovery efforts in the areas that were isolated last month by heavy flooding and numerous landslides. We are actively deploying disaster response resources to help residents and businesses in those areas. I am pleased that work has progressed to allow residents of Wainiha and Haena to safely use the highway.  However, we are asking visitors to enjoy other areas on Kauai to avoid impacting the ongoing recovery efforts. We also ask the same of the general public,” said Gov. David Ige.

The route opened for one-lane emergency access on April 28, 2018. Friday’s opening marks the first time residents can use the highway.

HDOT says $8 million in quick release funding from the Federal Highway Administration (FHWA) for the emergency work helps greatly. The current estimate for total emergency costs for the response and recovery work on Kuhio Highway is $40 million.

HDOT says it will seek FHWA Emergency Relief funding, which is provided on a cost-share basis for repair or reconstruction of highways damaged as a result of natural disasters.

HDOT says future phases of the work will likely require reassessment of and modification to management of public access through the construction site. The full reopening of Kuhio Highway from Waikoko to Wainiha for two-way traffic is expected within three to four months.

A detailed schedule for the restoration of unrestricted access to Wainiha and Haena will be available following the upgrade of the Waioli, Waipa, and Waikoko scheduled to start in June.

 Posted May 3, 2018 by Diane Ako Hawaii News. More on Flood Damage in Kauai For other news related to Kauai.