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Fall Weather in Solomon Islands Solomon Islands

Daily high temperatures are around 87°F, rarely falling below 84°F or exceeding 90°F. The highest daily average high temperature is 87°F on April 26.

Daily low temperatures are around 74°F, rarely falling below 72°F or exceeding 77°F.

For reference, on November 30, the hottest day of the year, temperatures in Solomon Islands typically range from 74°F to 88°F, while on August 17, the coldest day of the year, they range from 72°F to 86°F.

Average High and Low Temperature in the Fall in Solomon Islands

Average High and Low Temperature in the Fall in Solomon IslandsMarAprMay70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°FSummerWinterApr 2387°FApr 2387°F74°F74°FMar 187°FMar 187°F75°F75°FMay 3187°FMay 3187°F74°F74°FApr 187°FApr 187°F75°F75°FNowNow
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 fall temperatures. 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 the Fall in Solomon Islands

Average Hourly Temperature in the Fall in Solomon IslandsMarAprMay12 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 AMSummerWinterNowNowcomfortablewarmwarmhot
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.
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The fall in Solomon Islands experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 89% to 81%.

The clearest day of the fall is May 31, with clear, mostly clear, or partly cloudy conditions 19% of the time.

For reference, on February 9, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 90%, while on August 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 29%.

Cloud Cover Categories in the Fall in Solomon Islands

Cloud Cover Categories in the Fall in Solomon IslandsMarAprMay0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SummerWinterMar 111%Mar 111%May 3119%May 3119%Apr 115%Apr 115%May 117%May 117%NowNowpartly cloudymostly cloudyovercastmostly clear
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 Solomon Islands, the chance of a wet day over the course of the fall is very rapidly decreasing, starting the season at 46% and ending it at 25%.

For reference, the year's highest daily chance of a wet day is 47% on February 15, and its lowest chance is 21% on July 22.

Probability of Precipitation in the Fall in Solomon Islands

Probability of Precipitation in the Fall in Solomon IslandsMarAprMay0%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%45%45%50%50%SummerWinterMar 146%Mar 146%May 3125%May 3125%Apr 134%Apr 134%May 130%May 130%NowNowrain
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 season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the fall in Solomon Islands is very rapidly decreasing, starting the season at 9.5 inches, when it rarely exceeds 16.6 inches or falls below 2.8 inches, and ending the season at 3.3 inches, when it rarely exceeds 6.7 inches or falls below 0.5 inches.

Average Monthly Rainfall in the Fall in Solomon Islands

Average Monthly Rainfall in the Fall in Solomon IslandsMarAprMay0 in0 in5 in5 in10 in10 in15 in15 inSummerWinterMar 19.5 inMar 19.5 inMay 313.3 inMay 313.3 inApr 16.8 inApr 16.8 inMay 14.8 inMay 14.8 inNowNow
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 the fall in Solomon Islands, the length of the day is decreasing. From the start to the end of the season, the length of the day decreases by 34 minutes, implying an average daily decrease of 22 seconds, and weekly decrease of 2 minutes, 36 seconds.

The shortest day of the fall is May 31, with 11 hours, 41 minutes of daylight and the longest day is March 1, with 12 hours, 15 minutes of daylight.

Hours of Daylight and Twilight in the Fall in Solomon Islands

Hours of Daylight and Twilight in the Fall in Solomon IslandsMarAprMay0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSummerWinterMar 2012 hr, 7 minMar 2012 hr, 7 mindaydaydaydaynightMay 3111 hr, 41 minMay 3111 hr, 41 minMay 111 hr, 49 minMay 111 hr, 49 minNowNow
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 fall in Solomon Islands is 6:26 AM on April 22 and the latest sunrise is 5 minutes later at 6:31 AM on May 31.

The latest sunset is 6:43 PM on March 1 and the earliest sunset is 32 minutes earlier at 6:12 PM on May 25.

Daylight saving time is not observed in Solomon Islands during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 6:04 AM and sets 12 hours, 36 minutes later, at 6:39 PM, while on June 20, the shortest day of the year, it rises at 6:35 AM and sets 11 hours, 40 minutes later, at 6:15 PM.

Sunrise & Sunset with Twilight in the Fall in Solomon Islands

Sunrise & Sunset with Twilight in the Fall in Solomon IslandsMarAprMay2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSummerWinter6:26 AM6:26 AMApr 226:18 PMApr 226:18 PM6:28 AM6:28 AMMar 16:43 PMMar 16:43 PM6:29 AM6:29 AMMay 256:12 PMMay 256:12 PM6:27 AM6:27 AMApr 16:28 PMApr 16:28 PMSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day in the fall. 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 the Fall in Solomon Islands

Solar Elevation and Azimuth in the Fall in Solomon IslandsMarAprMay12 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 AMSummerWinter001020203030405050606070800010102030304040506070NowNow
northeastsouthwest
Solar elevation and azimuth in the the fall of 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 the fall of 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 the Fall in Solomon Islands

Moon Rise, Set & Phases in the Fall in Solomon IslandsMarAprMay12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSummerWinterFeb 1010:00 AMFeb 1010:00 AMFeb 2411:31 PMFeb 2411:31 PMMar 108:01 PMMar 108:01 PMMar 256:01 PMMar 256:01 PMApr 95:22 AMApr 95:22 AMApr 2410:50 AMApr 2410:50 AMMay 82:23 PMMay 82:23 PMMay 2412:54 AMMay 2412:54 AMJun 611:38 PMJun 611:38 PMJun 2212:09 PMJun 2212:09 PM7:14 PM7:14 PM6:42 PM6:42 PM6:48 AM6:48 AM6:38 PM6:38 PM6:31 PM6:31 PM6:54 AM6:54 AM6:46 PM6:46 PM5:44 PM5:44 PM6:19 AM6:19 AM6:13 PM6:13 PM5:48 PM5:48 PM6:45 AM6:45 AM5:50 PM5:50 PM5:24 PM5:24 PM6:30 AM6:30 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.

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 Solomon Islands is essentially constant during the fall, remaining around 100% throughout.

For reference, on January 20, the muggiest day of the year, there are muggy conditions 100% of the time, while on July 31, the least muggy day of the year, there are muggy conditions 99% of the time.

Humidity Comfort Levels in the Fall in Solomon Islands

Humidity Comfort Levels in the Fall in Solomon IslandsMarAprMay0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SummerWinterApr 16100%Apr 16100%Mar 1100%Mar 1100%May 31100%May 31100%Apr 1100%Apr 1100%May 1100%May 1100%NowNowmiserablemiserableoppressiveoppressivemuggymuggy
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 Solomon Islands is increasing during the fall, increasing from 9.2 miles per hour to 10.4 miles per hour over the course of the season.

For reference, on August 23, the windiest day of the year, the daily average wind speed is 13.6 miles per hour, while on December 9, the calmest day of the year, the daily average wind speed is 7.4 miles per hour.

The lowest daily average wind speed during the fall is 7.7 miles per hour on April 9.

Average Wind Speed in the Fall in Solomon Islands

Average Wind Speed in the Fall in Solomon IslandsMarAprMay0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mphSummerWinterApr 97.7 mphApr 97.7 mphMar 19.2 mphMar 19.2 mphMay 3110.4 mphMay 3110.4 mphMay 18.4 mphMay 18.4 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction in Solomon Islands during the fall is predominantly out of the west from March 1 to March 17 and the east from March 17 to May 31.

Wind Direction in the Fall in Solomon Islands

Wind Direction in the Fall in Solomon IslandsWEMarAprMay0%100%20%80%40%60%60%40%80%20%100%0%SummerWinterNowNowwesteastnorthsouth
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).

Solomon Islands 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 Solomon Islands is essentially constant during the fall, remaining around 85°F throughout.

Average Water Temperature in the Fall in Solomon Islands

Average Water Temperature in the Fall in Solomon IslandsMarAprMay82°F82°F83°F83°F84°F84°F85°F85°F86°F86°F87°F87°FSummerWinterMar 185°FMar 185°FMay 3184°FMay 3184°FApr 185°FApr 185°FMay 185°FMay 185°FNowNow
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 Solomon Islands 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 the Fall in Solomon Islands

Time Spent in Various Temperature Bands and the Growing Season in the Fall in Solomon IslandsMarAprMay0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SummerWinter100%Apr 16100%Apr 16NowNowcomfortablewarmhot
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 Solomon Islands are very rapidly increasing during the fall, increasing by 2,693°F, from 7,186°F to 9,878°F, over the course of the season.

Growing Degree Days in the Fall in Solomon Islands

Growing Degree Days in the Fall in Solomon IslandsMarAprMay7,500°F7,500°F8,000°F8,000°F8,500°F8,500°F9,000°F9,000°F9,500°F9,500°F10,000°F10,000°FSummerWinterMar 17,186°FMar 17,186°FMay 319,878°FMay 319,878°FApr 18,100°FApr 18,100°FMay 18,993°FMay 18,993°FNowNow
The average growing degree days accumulated over the course of the fall, 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 Solomon Islands is essentially constant during the fall, remaining within 0.3 kWh of 4.3 kWh throughout.

The highest average daily incident shortwave solar energy during the fall is 4.6 kWh on April 1.

Average Daily Incident Shortwave Solar Energy in the Fall in Solomon Islands

Average Daily Incident Shortwave Solar Energy in the Fall in Solomon IslandsMarAprMay0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhSummerWinterApr 14.6 kWhApr 14.6 kWhMar 14.5 kWhMar 14.5 kWhMay 314.0 kWhMay 314.0 kWhMay 14.2 kWhMay 14.2 kWhNowNow
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 Solomon Islands are -8.000 deg latitude, 159.000 deg longitude, and 0 ft elevation.

The topography within 2 miles of Solomon Islands is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (0 feet).

The area within 2 miles of Solomon Islands is covered by trees (76%) and grassland (13%), within 10 miles by trees (51%) and water (33%), and within 50 miles by water (84%) and trees (12%).

This report illustrates the typical weather in Solomon Islands, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used for this report can be found on the Honiara-Henderson International Airport page.

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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