Climate and Average Weather Year Round at Wheeler Army Airfield Hawaii, United States
At Wheeler Army Airfield, the summers are warm, muggy, dry, and partly cloudy; the winters are long, comfortable, and mostly clear; and it is windy year round. Over the course of the year, the temperature typically varies from 62°F to 84°F and is rarely below 56°F or above 87°F.
Based on the tourism score, the best time of year to visit Wheeler Army Airfield for warm-weather activities is from early November to early October.
Climate at Wheeler Army Airfield
Average Temperature at Wheeler Army Airfield
The warm season lasts for 3.2 months, from July 6 to October 13, with an average daily high temperature above 82°F. The hottest day of the year is August 27, with an average high of 84°F and low of 69°F.
The cool season lasts for 4.1 months, from December 6 to April 11, with an average daily high temperature below 77°F. The coldest day of the year is January 31, with an average low of 62°F and high of 76°F.
Average High and Low Temperature at Wheeler Army Airfield
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature at Wheeler Army Airfield
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
At Wheeler Army Airfield, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.
The clearer part of the year at Wheeler Army Airfield begins around December 9 and lasts for 4.3 months, ending around April 17. On January 18, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 78% of the time, and overcast or mostly cloudy 22% of the time.
The cloudier part of the year begins around April 17 and lasts for 7.7 months, ending around December 9. On October 31, the cloudiest day of the year, the sky is overcast or mostly cloudy 42% of the time, and clear, mostly clear, or partly cloudy 58% of the time.
Cloud Cover Categories at Wheeler Army Airfield
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Wheeler Army Airfield varies throughout the year.
The wetter season lasts 5.4 months, from October 14 to March 26, with a greater than 17% chance of a given day being a wet day. The chance of a wet day peaks at 26% on January 11.
The drier season lasts 6.6 months, from March 26 to October 14. The smallest chance of a wet day is 8% on June 20.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 26% on January 11.
Daily Chance of Precipitation at Wheeler Army Airfield
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Wheeler Army Airfield experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 11 months, from June 29 to May 31, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around January 1, with an average total accumulation of 2.8 inches.
The rainless period of the year lasts for 4.1 weeks, from May 31 to June 29. The least rain falls around June 13, with an average total accumulation of 0.4 inches.
Average Monthly Rainfall at Wheeler Army Airfield
The length of the day at Wheeler Army Airfield varies over the course of the year. In 2021, the shortest day is December 21, with 10 hours, 50 minutes of daylight; the longest day is June 20, with 13 hours, 27 minutes of daylight.
Hours of Daylight and Twilight at Wheeler Army Airfield
The earliest sunrise is at 5:49 AM on June 6, and the latest sunrise is 1 hour, 24 minutes later at 7:12 AM on January 15. The earliest sunset is at 5:48 PM on November 26, and the latest sunset is 1 hour, 30 minutes later at 7:18 PM on July 4.
Daylight saving time (DST) is not observed at Wheeler Army Airfield during 2021.
Sunrise & Sunset with Twilight at Wheeler Army Airfield
The figure below presents a compact representation of key lunar data for 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.
Moon Rise, Set & Phases at Wheeler Army Airfield
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
Wheeler Army Airfield experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 7.1 months, from May 19 to December 24, during which time the comfort level is muggy, oppressive, or miserable at least 28% of the time. The muggiest day of the year is September 27, with muggy conditions 70% of the time.
The least muggy day of the year is March 9, with muggy conditions 14% of the time.
Humidity Comfort Levels at Wheeler Army Airfield
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed at Wheeler Army Airfield experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 3.2 months, from May 30 to September 7, with average wind speeds of more than 14.5 miles per hour. The windiest day of the year is July 3, with an average hourly wind speed of 16.7 miles per hour.
The calmer time of year lasts for 8.7 months, from September 7 to May 30. The calmest day of the year is January 10, with an average hourly wind speed of 12.3 miles per hour.
Average Wind Speed at Wheeler Army Airfield
The predominant average hourly wind direction at Wheeler Army Airfield is from the east throughout the year.
Wind Direction at Wheeler Army Airfield
Wheeler Army Airfield is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.1 months, from August 3 to November 7, with an average temperature above 79°F. The day of the year with the warmest water is September 18, with an average temperature of 80°F.
The time of year with cooler water lasts for 4.1 months, from January 1 to May 6, with an average temperature below 76°F. The day of the year with the coolest water is February 14, with an average temperature of 75°F.
Average Water Temperature at Wheeler Army Airfield
Best Time of Year to Visit
To characterize how pleasant the weather is at Wheeler Army Airfield throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Wheeler Army Airfield for general outdoor tourist activities is from early November to early October, with a peak score in the third week of June.
Tourism Score at Wheeler Army Airfield
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Wheeler Army Airfield for hot-weather activities is from mid June to late September, with a peak score in the first week of August.
Beach/Pool Score at Wheeler Army Airfield
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).
Temperatures at Wheeler Army Airfield are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.
Time Spent in Various Temperature Bands and the Growing Season at Wheeler Army Airfield
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.
Growing Degree Days at Wheeler Army Airfield
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy experiences significant seasonal variation over the course of the year.
The brighter period of the year lasts for 4.7 months, from April 11 to September 1, with an average daily incident shortwave energy per square meter above 7.0 kWh. The brightest day of the year is June 9, with an average of 7.6 kWh.
The darker period of the year lasts for 2.8 months, from November 6 to January 31, with an average daily incident shortwave energy per square meter below 4.9 kWh. The darkest day of the year is December 20, with an average of 4.3 kWh.
Average Daily Incident Shortwave Solar Energy at Wheeler Army Airfield
For the purposes of this report, the geographical coordinates of Wheeler Army Airfield are 21.484 deg latitude, -158.036 deg longitude, and 833 ft elevation.
The topography within 2 miles of Wheeler Army Airfield contains only modest variations in elevation, with a maximum elevation change of 486 feet and an average elevation above sea level of 848 feet. Within 10 miles contains only modest variations in elevation (4,055 feet). Within 50 miles also contains extreme variations in elevation (4,117 feet).
The area within 2 miles of Wheeler Army Airfield is covered by artificial surfaces (62%), trees (21%), and cropland (17%), within 10 miles by trees (52%) and artificial surfaces (17%), and within 50 miles by water (92%).
This report illustrates the typical weather at Wheeler Army Airfield, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
Wheeler Army Airfield has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
The stations on which we may fall back are Kalaeloa Airport; Kalaeloa Airport (John Rodgers Field); Honolulu International Airport; Marine Corps Air Station Kaneohe Bay; Molokai Airport; Lihue Airport; and Kekaha, Pacific Missile Test Facility Barking Sands.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for airports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.