Hawaii Weather Guide & Forecast

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What’s the weather like in Hawaii?

Temperatures

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

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.

Oahu’s Weather

oahu average high and low temperatures by month

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

The southern side of Oahu, including Waikiki and Honolulu along with the southwest coast at Ko Olina are your best bet for lots of Hawaiian sunshine. Though the North Shore also gets it’s fair share of sunshine. We wouldn’t hesitate to head to any part of Oahu any day of the year.

For more Oahu weather details, read our Oahu Weather Guide.

The upcoming Oahu forecast is as follows:

Flash Flood Watch

Issued:
3:05 AM HST on February 13, 2018
Expires:
6:00 AM HST on February 15, 2018
Mostly Cloudy
Tuesday 02/13/2018 20%
Mostly Cloudy
Mainly cloudy. High 79F. Winds S at 10 to 20 mph.
Thunderstorm
Wednesday 02/14/2018 100%
Thunderstorm
Thunderstorms. High 78F. Winds SSW at 10 to 20 mph. Chance of rain 100%. Locally heavy rainfall possible.
Chance of Rain
Thursday 02/15/2018 60%
Chance of Rain
Showers in the morning, then partly cloudy in the afternoon. High 79F. Winds W at 5 to 10 mph. Chance of rain 60%.
Clear
Friday 02/16/2018 10%
Clear
A mainly sunny sky. High 79F. Winds WSW at 5 to 10 mph.
Chance of a Thunderstorm
Saturday 02/17/2018 50%
Chance of a Thunderstorm
Showers early then scattered thunderstorms developing later in the day. High 79F. Winds NNE at 5 to 10 mph. Chance of rain 50%.

 

Maui’s Weather

Maui year round average high and low temperatures

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

Choose the sunny South Coast near Wailea for a nearly guaranteed sunshine all year round. While, Lahaina Kaanapali and Kapalua in West Maui get a bit more rain as compared to South Maui, overall the area has relatively low rain levels and good amounts of beautiful Hawaiian sun.

The windward east side of Maui, including beautiful Hana, tend to have a more rain which creates those beautiful waterfalls and rainforests.

If you plan to venture to to the top of Maui’s inactive volcano, Haleakala, plan to bring a warm windproof jacket, hat and gloves as it can get cold – especially overnight during the night.

For more Maui weather details, read our Maui Weather Guide.

The upcoming Maui forecast is as follows:

Partly Cloudy
Tuesday 02/13/2018 0%
Partly Cloudy
Mostly cloudy skies this morning will become partly cloudy this afternoon. High 81F. Winds WNW at 5 to 10 mph.
Chance of a Thunderstorm
Wednesday 02/14/2018 40%
Chance of a Thunderstorm
Partly cloudy early. Scattered thunderstorms developing in the afternoon. High 83F. Winds SW at 5 to 10 mph. Chance of rain 40%.
Thunderstorm
Thursday 02/15/2018 100%
Thunderstorm
Heavy thunderstorms in the morning, then variable clouds during the afternoon with still a chance of showers. High 74F. WSW winds shifting to N at 10 to 15 mph. Chance of rain 100%. 1 to 2 inches of rain expected. Locally heavy rainfall possible.
Clear
Friday 02/16/2018 20%
Clear
Generally sunny. High 81F. Winds WNW at 5 to 10 mph.
Chance of a Thunderstorm
Saturday 02/17/2018 40%
Chance of a Thunderstorm
Variable clouds with scattered thunderstorms. High 79F. Winds NNE at 5 to 10 mph. Chance of rain 40%.

 

Kauai’s Weather

Kauai year round average high and low temperatures

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 are likely to offer more sunshine and less rainfall.

For more Kauai weather details, read our Kauai Weather Guide.

The upcoming Kauai forecast is as follows:

Flash Flood Watch

Issued:
3:05 AM HST on February 13, 2018
Expires:
6:00 AM HST on February 15, 2018
Chance of a Thunderstorm
Tuesday 02/13/2018 30%
Chance of a Thunderstorm
Cloudy early with isolated thunderstorms developing this afternoon. High 77F. Winds SSW at 10 to 20 mph. Chance of rain 30%. Locally heavy rainfall possible.
Chance of a Thunderstorm
Wednesday 02/14/2018 50%
Chance of a Thunderstorm
Partly cloudy early. Scattered thunderstorms developing in the afternoon. High 77F. Winds SW at 10 to 15 mph. Chance of rain 50%. Locally heavy rainfall possible.
Clear
Thursday 02/15/2018 10%
Clear
Sunshine. High 77F. Winds WSW at 5 to 10 mph.
Clear
Friday 02/16/2018 10%
Clear
Sunny along with a few clouds. High 78F. Winds SE at 5 to 10 mph.
Partly Cloudy
Saturday 02/17/2018 20%
Partly Cloudy
Partly cloudy skies. High 77F. Winds NNE at 10 to 15 mph.

 

The Big Island’s Weather

kona hawaii average monthly high and low temperatures

Average high and low temperatures by month for Kona on Hawaii, the Big Island. Data sourced by GoVisitHawaii.com from Weather.com

The Big Island of Hawaii offers the most diverse climates within the Hawaiian Islands. Climatologists have determined that the Big Island has 11 of the world’s 13 climate zones.

The Kohala and Kona coasts on the west of the Big Island are your best bets for plenty of sun and little rain. The Kohala Coast, in particular offers one of the sunniest resort spots in all of Hawaii.

In comparison to the dry Kona and Kohala coasts, Hilo on the East side tends to have significant amounts of rain year round. In fact, compared to all the other Hawaiian airports where weather data is collected, Hilo receives several more inches of rain on average.

If you visit the higher elevations, you want to be prepared for chillier temperatures. If you go into Waimea town in the evening, you’ll want to have a light sweater. If you go up to the summits of Mauna Kea and Mauna Loa, you’ll want to wear long pants and a coat.

For more Big Island weather details, read our Hawaii (Big) Island Weather Guide.

The upcoming Kona forecast is as follows:

Mostly Cloudy
Tuesday 02/13/2018 10%
Mostly Cloudy
A mix of clouds and sun early followed by cloudy skies this afternoon. High around 85F. Winds WNW at 5 to 10 mph.
Chance of Rain
Wednesday 02/14/2018 40%
Chance of Rain
Partly cloudy skies during the morning hours will give way to occasional showers in the afternoon. High around 85F. Winds NW at 10 to 15 mph. Chance of rain 40%.
Chance of Rain
Thursday 02/15/2018 60%
Chance of Rain
Cloudy with showers. High 83F. Winds SSW at 10 to 20 mph. Chance of rain 60%. Locally heavy rainfall possible.
Chance of Rain
Friday 02/16/2018 40%
Chance of Rain
Partly cloudy in the morning. Increasing clouds with periods of showers later in the day. High 84F. Winds SSW at 10 to 15 mph. Chance of rain 40%.
Chance of a Thunderstorm
Saturday 02/17/2018 80%
Chance of a Thunderstorm
Partly cloudy early with thunderstorms becoming likely during the afternoon. High 84F. Winds WSW at 5 to 10 mph. Chance of rain 80%.

 

Lanai’s Weather

Lanai City year round temperatures

Average high and low temperatures by month for Lana’i. Data sourced by GoVisitHawaii.com from Weather.com

The island of Lana’i has just a few areas where you’ll find lodging — in Lanai City and nearby Koele in the upcountry and Manele Bay down on the coast. The highlands or upcountry of Lanai enjoy a mild/cooler climate as compared to the warmer and sunnier Manele Bay. Please note that the above chart is based on the Lanai City in the higher elevation. To estimate weather in Manele Bay, add about 10 degrees Fahrenheit to Lanai City temperatures.

The upcoming Lanai City forecast is as follows:

Partly Cloudy
Tuesday 02/13/2018 0%
Partly Cloudy
Considerable clouds this morning. Some decrease in clouds later in the day. High 74F. Winds S at 10 to 15 mph.
Thunderstorm
Wednesday 02/14/2018 90%
Thunderstorm
Scattered thunderstorms in the morning becoming more widespread in the afternoon. High 72F. Winds S at 10 to 20 mph. Chance of rain 90%.
Chance of Rain
Thursday 02/15/2018 100%
Chance of Rain
Overcast with rain showers at times. High 69F. Winds NW at 10 to 15 mph. Chance of rain 100%. Locally heavy rainfall possible.
Chance of Rain
Friday 02/16/2018 30%
Chance of Rain
Sunshine in the morning giving way to clouds and a few showers during the afternoon. High 73F. Winds SW at 5 to 10 mph. Chance of rain 30%.
Chance of a Thunderstorm
Saturday 02/17/2018 40%
Chance of a Thunderstorm
Scattered showers and thunderstorms. High 73F. Winds NNE at 5 to 10 mph. Chance of rain 40%.

 

Molokai’s Weather

molokai high and low temperature chart year round

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

Molokai’s weather doesn’t vary quite as much as some of the other Hawaiian Islands. The north and east sides of the island are rainier than the south and west sides of the island.

The upcoming Molokai forecast is as follows.

Mostly Cloudy
Tuesday 02/13/2018 0%
Mostly Cloudy
Mostly cloudy. High 78F. Winds SSW at 10 to 15 mph.
Thunderstorm
Wednesday 02/14/2018 80%
Thunderstorm
Scattered thunderstorms in the morning, then mainly cloudy during the afternoon with thunderstorms likely. High 76F. Winds SSW at 10 to 20 mph. Chance of rain 80%.
Chance of Rain
Thursday 02/15/2018 80%
Chance of Rain
Showers in the morning, then cloudy in the afternoon. High 74F. Winds NW at 5 to 10 mph. Chance of rain 80%. Locally heavy rainfall possible.
Chance of Rain
Friday 02/16/2018 40%
Chance of Rain
Sunny in the morning then increasing clouds with showers later in the day. High 77F. Winds WSW at 5 to 10 mph. Chance of rain 40%.
Chance of a Thunderstorm
Saturday 02/17/2018 40%
Chance of a Thunderstorm
Mostly sunny in the morning then increasing clouds with some scattered thunderstorms later in the day. High 77F. Winds NNE at 5 to 10 mph. Chance of rain 40%.

Frequently asked Hawaii weather questions:

When is the best time to go to Hawaii?

Anytime is a great time to go to Hawaii. We’ve been to Hawaii 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. We provide many more details with advice on when to visit Hawaii in this article: which time of year is best for visiting Hawaii.

Is Hawaii 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 Hawaii during a particularly odd weather pattern to be cold in Hawaii. 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 Hawaii’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 tradewinds 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 Hawaii during the winter months?

As we’ve 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. See our article on where to stay to avoid rain in Hawaii.

Is winter a good time to go to Hawaii?

Yes! See our article about visiting Hawaii in the winter.

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 Hawaii? Can I swim in Hawaii in the colder winter months?

You can swim in the ocean in Hawaii throughout the year — even in winter months. The average ocean temperature for Honolulu is 78F and ranges from a low of 76F to 81F. See this link for more information.

 

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