The best times to visit Keaau for ideal weather are

December 10th to April 22nd

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

 

 


Other Keaau Travel Info

Weather in Keaau

Temperature

Average temperatures in Keaau vary very little. Considering humidity, temperatures feel hot for about half of the year and otherwise nice with a chance of rain throughout most of the year. The area is less temperate than some — in the 34th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Keaau, the hottest months are August, September, and then July. See average monthly temperatures below. The warmest time of year is generally mid to late August where highs are regularly around 85.6°F (29.8°C) with temperatures rarely dropping below 69.2°F (20.7°C) at night.

Keaau Temperatures (Fahrenheit)

Key
High
Average
Low

Keaau Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Keaau Perceived Temperature (F)

Key
High
Average
Low

Keaau Perceived Temperature (C)

Key
High
Average
Low

 

Average Keaau Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

MonthAvg. High (°F)Avg. Mean (°F)Avg. Low (°F)
Jan80.470.663.1
Feb80.270.863.8
Mar79.870.764.2
Apr80.471.564.8
May82.573.366.2
Jun83.174.267.4
Jul84.475.468.5
Aug84.575.969.1
Sep85.375.768.5
Oct84.47568.1
Nov8273.166.8
Dec80.471.565.1

Show Celsius

MonthAvg. High (°C)Avg. Mean (°C)Avg. Low (°C)
Jan26.921.417.3
Feb26.821.617.7
Mar26.621.517.9
Apr26.921.918.2
May28.122.919
Jun28.423.419.7
Jul29.124.120.3
Aug29.224.420.6
Sep29.624.320.3
Oct29.123.920.1
Nov27.822.819.3
Dec26.921.918.4

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Keaau are January, February, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid July. For example, on the week of July 9th there are 2 days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid May with an average of 6 days of significant precipitation the week of May 7th.

When can you find snow in Keaau? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Keaau.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Keaau (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

MonthDaily Chance of RainAverage Snow Depth (in)Total Precipitation (in)
Jan38%08.1
Feb41%013.5
Mar56%011.7
Apr55%09.5
May59%07.4
Jun64%07.2
Jul49%07.7
Aug60%07.2
Sep48%07.3
Oct55%08.6
Nov58%012.8
Dec56%020.5

Show Centimeters

MonthDaily Chance of RainAverage Snow Depth (cm)Total Precipitation (cm)
Jan38020.6
Feb41034.3
Mar56029.7
Apr55024.1
May59018.8
Jun64018.3
Jul49019.6
Aug60018.3
Sep48018.5
Oct55021.8
Nov58032.5
Dec56052.1

 

Humidity and Wind

Keaau has some very humid months, and above average humidity throughout the year. The least humid month is January (67.6% relative humidity), and the most humid month is November (73.6%).

Wind in Keaau is usually calm. The windiest month is April, followed by February and March. April’s average wind speed of around 5.7 knots (6.6 MPH or 10.6 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late January and early February where average top sustained speeds reach 13.9 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Keaau.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

MonthAvg. WindAvg. Wind FeelSustained High WindHigh Wind Feel
Jan5.6Light breeze12.2Significant breeze
Feb5.7Light breeze12.8Significant breeze
Mar5.7Light breeze12.4Significant breeze
Apr5.7Light breeze12.6Significant breeze
May5.5Light breeze12.1Significant breeze
Jun5.3Light breeze11.8Significant breeze
Jul5.2Light breeze11.1Significant breeze
Aug5.2Light breeze11.1Significant breeze
Sep5.2Light breeze11.2Significant breeze
Oct5.1Light breeze10.8Gentle breeze
Nov5.1Light breeze11Significant breeze
Dec5.2Light breeze11.7Significant breeze

Show Relative Humidity by Month

MonthAvg. Relative Humidity
Jan67.6%
Feb68.4%
Mar70.4%
Apr71.1%
May68.4%
Jun69.7%
Jul70%
Aug70.6%
Sep68.8%
Oct71.2%
Nov73.6%
Dec73.1%

 

Is it Safe to Travel to Keaau?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Keaau, HI, US is July, followed by March and February. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Keaau in June. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 75.7 in June means 75.7% of the tourists vs. July.

 

 

Overall Keaau Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel warm. Highs range from 83.2°F (28.4°C) and 79.6°F (26.4°C) with warmer temperatures in the later months. Rain is frequent with 16 to 18 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see the most precipitation with 15 to 19 days of precipitation per month. June – August is fairly slow season for tourism in Keaau, so lodging and other accommodations may cost slightly less.

Fall (September through November)

Fall daily highs range from 85.6°F (29.8°C) and 81.6°F (27.6°C), which will feel very nice given the humidity and wind. It rains or snows a great amount: 14 to 17 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is perfect this time of year in Keaau to be enjoyable for warm weather travelers. The average high during this season is between 81.3°F (27.4°C) and 79.6°F (26.4°C). On average, it rains or snows a very great amount: 11 to 17 times per month. These times of year are the busiest with tourists.

 

Best Times to Travelthe United States › Keaau, HI, US