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January Weather in Honolulu Hawaii, United States

Daily high temperatures are around 79°F, rarely falling below 76°F or exceeding 82°F. The lowest daily average high temperature is 79°F on January 31.

Daily low temperatures are around 68°F, rarely falling below 63°F or exceeding 73°F. The lowest daily average low temperature is 68°F on January 28.

For reference, on August 22, the hottest day of the year, temperatures in Honolulu typically range from 76°F to 87°F, while on January 28, the coldest day of the year, they range from 68°F to 79°F.

Average High and Low Temperature in January in Honolulu

Average High and Low Temperature in January in HonoluluJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313162°F62°F64°F64°F66°F66°F68°F68°F70°F70°F72°F72°F74°F74°F76°F76°F78°F78°F80°F80°F82°F82°F84°F84°FDecFebJan 3079°FJan 3079°F68°F68°FJan 180°FJan 180°F69°F69°FJan 1179°FJan 1179°F68°F68°FJan 2179°FJan 2179°F68°F68°F
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in January in Honolulu

Average Hourly Temperature in January in HonoluluJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMDecFebcomfortablecomfortablewarm
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
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Suva, Fiji (3,166 miles away) is the far-away foreign place with temperatures most similar to Honolulu (view comparison).

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The month of January in Honolulu experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 23% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 21% on January 18.

The clearest day of the month is January 18, with clear, mostly clear, or partly cloudy conditions 79% of the time.

For reference, on October 30, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 41%, while on January 18, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 79%.

Cloud Cover Categories in January in Honolulu

Cloud Cover Categories in January in HonoluluJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebOct 3059%Oct 3059%Jan 176%Jan 176%Jan 3177%Jan 3177%Jan 1177%Jan 1177%Jan 2178%Jan 2178%clearmostly clearpartly cloudyovercastmostly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Honolulu, the chance of a wet day over the course of January is essentially constant, remaining around 24% throughout.

For reference, the year's highest daily chance of a wet day is 25% on January 11, and its lowest chance is 6% on June 19.

Probability of Precipitation in January in Honolulu

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during January in Honolulu is gradually decreasing, starting the month at 2.6 inches, when it rarely exceeds 6.9 inches or falls below 0.2 inches, and ending the month at 2.1 inches, when it rarely exceeds 5.2 inches or falls below 0.1 inches.

The highest average 31-day accumulation is 2.6 inches on January 1.

Average Monthly Rainfall in January in Honolulu

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of January in Honolulu, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 20 minutes, implying an average daily increase of 40 seconds, and weekly increase of 4 minutes, 37 seconds.

The shortest day of the month is January 1, with 10 hours, 52 minutes of daylight and the longest day is January 31, with 11 hours, 12 minutes of daylight.

Hours of Daylight and Twilight in January in Honolulu

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in Honolulu is 7:09 AM on January 1 and the latest sunrise is 2 minutes, 30 seconds later at 7:11 AM on January 16.

The earliest sunset is 6:00 PM on January 1 and the latest sunset is 20 minutes later at 6:20 PM on January 31.

Daylight saving time is not observed in Honolulu during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:50 AM and sets 13 hours, 26 minutes later, at 7:16 PM, while on December 21, the shortest day of the year, it rises at 7:04 AM and sets 10 hours, 50 minutes later, at 5:55 PM.

Sunrise & Sunset with Twilight in January in Honolulu

Sunrise & Sunset with Twilight in January in HonoluluJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031312 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMDecFeb7:09 AM7:09 AMJan 16:00 PMJan 16:00 PM7:09 AM7:09 AMJan 316:20 PMJan 316:20 PM7:11 AM7:11 AMJan 166:10 PMJan 166:10 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of January. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in January in Honolulu

Solar Elevation and Azimuth in January in HonoluluJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMDecFeb00101020202030304040500001010202030303040405060
northeastsouthwest
Solar elevation and azimuth over the course of January 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for January 2024. 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in January in Honolulu

Moon Rise, Set & Phases in January in HonoluluJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMDecFebDec 121:33 PMDec 121:33 PMDec 262:34 PMDec 262:34 PMJan 111:58 AMJan 111:58 AMJan 257:55 AMJan 257:55 AMFeb 91:00 PMFeb 91:00 PMFeb 242:31 AMFeb 242:31 AM6:53 AM6:53 AM5:47 PM5:47 PM5:52 PM5:52 PM7:58 AM7:58 AM7:41 AM7:41 AM6:43 PM6:43 PM5:37 PM5:37 PM7:27 AM7:27 AM7:10 AM7:10 AM6:36 PM6:36 PM6:12 PM6:12 PM7:16 AM7:16 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Jan 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
73%-11:14 AMW11:12 PME4:50 AMS251,600 mi
2
64%-11:44 AMW-5:29 AMS251,220 mi
3
50%12:01 AME12:14 PMW-6:08 AMS250,013 mi
4
45%12:49 AME12:45 PMW-6:47 AMS247,992 mi
5
35%1:40 AMESE1:19 PMWSW-7:29 AMS245,236 mi
6
25%2:34 AMESE1:56 PMWSW-8:15 AMS241,902 mi
7
17%3:32 AMESE2:40 PMWSW-9:05 AMS238,219 mi
8
9%4:33 AMESE3:30 PMWSW-10:01 AMS234,478 mi
9
4%5:37 AMESE4:29 PMWSW-11:03 AMS231,011 mi
10
0%6:41 AMESE5:34 PMWSW-12:08 PMS228,147 mi
11
0%7:41 AMESE6:43 PMWSW-1:12 PMS226,156 mi
12
3%8:35 AMESE7:51 PMWSW-2:13 PMS225,192 mi
13
9%9:22 AMESE8:57 PMWSW-3:10 PMS225,272 mi
14
17%10:04 AMESE10:00 PMW-4:02 PMS226,287 mi
15
27%10:43 AME11:01 PMW-4:51 PMS228,045 mi
16
39%11:20 AME--5:38 PMS230,312 mi
17
50%-12:00 AMW11:57 AME6:26 PMS232,863 mi
18
62%-12:58 AMWNW12:35 PMENE7:14 PMS235,510 mi
19
72%-1:58 AMWNW1:16 PMENE8:05 PMN238,118 mi
20
81%-2:58 AMWNW2:01 PMENE8:58 PMN240,602 mi
21
89%-3:58 AMWNW2:51 PMENE9:53 PMN242,921 mi
22
95%-4:56 AMWNW3:44 PMENE10:48 PMN245,055 mi
23
98%-5:52 AMWNW4:40 PMENE11:42 PMN246,992 mi
24
99%-6:42 AMWNW5:37 PMENE--
25
100%-7:27 AMWNW6:33 PMENE12:34 AMN248,707 mi
26
100%-8:06 AMWNW7:26 PMENE1:22 AMS250,155 mi
27
97%-8:42 AMWNW8:17 PMENE2:06 AMS251,269 mi
28
93%-9:14 AMW9:06 PME2:47 AMS251,959 mi
29
87%-9:44 AMW9:55 PME3:27 AMS252,126 mi
30
80%-10:14 AMW10:43 PME4:05 AMS251,671 mi
31
72%-10:44 AMW11:32 PME4:44 AMS250,516 mi

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.

The chance that a given day will be muggy in Honolulu is decreasing during January, falling from 45% to 36% over the course of the month.

For reference, on September 20, the muggiest day of the year, there are muggy conditions 93% of the time, while on March 8, the least muggy day of the year, there are muggy conditions 29% of the time.

Humidity Comfort Levels in January in Honolulu

Humidity Comfort Levels in January in HonoluluJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFebJan 145%Jan 145%Jan 3136%Jan 3136%Jan 1141%Jan 1141%Jan 2138%Jan 2138%muggymuggyhumidhumidcomfortablecomfortableoppressiveoppressivedrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 in Honolulu is essentially constant during January, remaining within 0.1 miles per hour of 12.4 miles per hour throughout.

For reference, on July 2, the windiest day of the year, the daily average wind speed is 16.5 miles per hour, while on January 10, the calmest day of the year, the daily average wind speed is 12.3 miles per hour.

The lowest daily average wind speed during January is 12.3 miles per hour on January 10.

Average Wind Speed in January in Honolulu

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Honolulu throughout January is predominantly from the east, with a peak proportion of 50% on January 1.

Wind Direction in January in Honolulu

Wind Direction in January in HonoluluJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%DecFebeastnorthwestsouth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Honolulu 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 surface water temperature in Honolulu is essentially constant during January, remaining around 76°F throughout.

Average Water Temperature in January in Honolulu

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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 in Honolulu 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 in January in Honolulu

Time Spent in Various Temperature Bands and the Growing Season in January in HonoluluJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFeb100%Jan 16100%Jan 16comfortablewarmcool
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
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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.

The average accumulated growing degree days in Honolulu are rapidly increasing during January, increasing by 692°F, from 24°F to 716°F, over the course of the month.

Growing Degree Days in January in Honolulu

The average growing degree days accumulated over the course of January, with 25th to 75th and 10th to 90th percentile bands.

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 in Honolulu is gradually increasing during January, rising by 0.5 kWh, from 4.4 kWh to 5.0 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in January in Honolulu

Average Daily Incident Shortwave Solar Energy in January in HonoluluJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhDecFebJan 14.4 kWhJan 14.4 kWhJan 315.0 kWhJan 315.0 kWhJan 114.5 kWhJan 114.5 kWhJan 214.8 kWhJan 214.8 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Honolulu are 21.307 deg latitude, -157.858 deg longitude, and 59 ft elevation.

The topography within 2 miles of Honolulu contains significant variations in elevation, with a maximum elevation change of 810 feet and an average elevation above sea level of 79 feet. Within 10 miles contains significant variations in elevation (3,104 feet). Within 50 miles contains large variations in elevation (4,121 feet).

The area within 2 miles of Honolulu is covered by artificial surfaces (72%) and water (22%), within 10 miles by water (47%) and artificial surfaces (24%), and within 50 miles by water (91%).

This report illustrates the typical weather in Honolulu, 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

There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Honolulu.

For each station, the records are corrected for the elevation difference between that station and Honolulu according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Honolulu is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Honolulu and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Honolulu and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

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 © OpenStreetMap contributors.

Disclaimer

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.

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