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April Weather in Port Moresby Papua New Guinea

Daily high temperatures are around 87°F, rarely falling below 83°F or exceeding 90°F.

Daily low temperatures are around 76°F, rarely falling below 73°F or exceeding 78°F.

For reference, on December 13, the hottest day of the year, temperatures in Port Moresby typically range from 76°F to 88°F, while on July 31, the coldest day of the year, they range from 73°F to 83°F.

Average High and Low Temperature in April in Port Moresby

Average High and Low Temperature in April in Port MoresbyApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303072°F72°F74°F74°F76°F76°F78°F78°F80°F80°F82°F82°F84°F84°F86°F86°F88°F88°F90°F90°F92°F92°F94°F94°F96°F96°FMarMayApr 187°FApr 187°F75°F75°FApr 3086°FApr 3086°F76°F76°FApr 1187°FApr 1187°F75°F75°FApr 2186°FApr 2186°F76°F76°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 April. 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 April in Port Moresby

Average Hourly Temperature in April in Port MoresbyApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMMarMaywarmhot
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.

Natal, Rio Grande do Norte, Brazil (11,384 miles away) is the far-away foreign place with temperatures most similar to Port Moresby (view comparison).

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The month of April in Port Moresby experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 84% throughout the month.

The clearest day of the month is April 30, with clear, mostly clear, or partly cloudy conditions 18% of the time.

For reference, on January 9, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 92%, while on August 18, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 37%.

Cloud Cover Categories in April in Port Moresby

Cloud Cover Categories in April in Port MoresbyApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%MarMayApr 114%Apr 114%Apr 3018%Apr 3018%Apr 1116%Apr 1116%Apr 2116%Apr 2116%mostly clearpartly cloudymostly cloudyovercast
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 Port Moresby, the chance of a wet day over the course of April is very rapidly decreasing, starting the month at 38% and ending it at 27%.

For reference, the year's highest daily chance of a wet day is 49% on February 29, and its lowest chance is 7% on July 16.

Probability of Precipitation in April in Port Moresby

Probability of Precipitation in April in Port MoresbyApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%45%45%50%50%MarMayApr 138%Apr 138%Apr 3027%Apr 3027%Apr 1135%Apr 1135%Apr 2132%Apr 2132%rain
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 April in Port Moresby is very rapidly decreasing, starting the month at 6.3 inches, when it rarely exceeds 12.3 inches or falls below 1.1 inches, and ending the month at 3.5 inches, when it rarely exceeds 6.7 inches or falls below 0.8 inches.

Average Monthly Rainfall in April in Port Moresby

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 April in Port Moresby, the length of the day is essentially constant. The shortest day of the month is April 30, with 11 hours, 47 minutes of daylight and the longest day is April 1, with 12 hours, 0 minutes of daylight.

Hours of Daylight and Twilight in April in Port Moresby

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 Port Moresby is 6:14 AM on April 15 and the latest sunrise is 36 seconds later at 6:15 AM on April 30.

The latest sunset is 6:15 PM on April 1 and the earliest sunset is 13 minutes earlier at 6:01 PM on April 30.

Daylight saving time is not observed in Port Moresby during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:49 AM and sets 12 hours, 41 minutes later, at 6:29 PM, while on June 20, the shortest day of the year, it rises at 6:25 AM and sets 11 hours, 34 minutes later, at 6:00 PM.

Sunrise & Sunset with Twilight in April in Port Moresby

Sunrise & Sunset with Twilight in April in Port MoresbyApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMMarMay6:14 AM6:14 AMApr 156:07 PMApr 156:07 PM6:14 AM6:14 AMApr 16:15 PMApr 16:15 PM6:15 AM6:15 AMApr 306:01 PMApr 306:01 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of April. 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 April in Port Moresby

Solar Elevation and Azimuth in April in Port MoresbyApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMMarMay0010102020203030404050505060607080000101020203030304040505060607080
northeastsouthwest
Solar elevation and azimuth over the course of April 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 April 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 April in Port Moresby

Moon Rise, Set & Phases in April in Port MoresbyApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMMarMayMar 107:01 PMMar 107:01 PMMar 255:01 PMMar 255:01 PMApr 94:22 AMApr 94:22 AMApr 249:50 AMApr 249:50 AMMay 81:23 PMMay 81:23 PMMay 2311:54 PMMay 2311:54 PM5:50 AM5:50 AM6:27 PM6:27 PM6:19 PM6:19 PM6:43 AM6:43 AM6:22 AM6:22 AM6:34 PM6:34 PM5:31 PM5:31 PM6:10 AM6:10 AM6:00 AM6:00 AM6:00 PM6:00 PM5:35 PM5:35 PM6:37 AM6:37 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.
Apr 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
64%-11:46 AMWSW11:32 PMESE5:10 AMS239,821 mi
2
50%-12:44 PMWSW-6:09 AMS236,577 mi
3
42%12:32 AMESE1:41 PMWSW-7:08 AMS233,189 mi
4
31%1:33 AMESE2:36 PMWSW-8:06 AMS229,879 mi
5
20%2:34 AMESE3:26 PMWSW-9:02 AMS226,923 mi
6
11%3:32 AMESE4:15 PMW-9:55 AMS224,625 mi
7
4%4:29 AME5:01 PMW-10:46 AMN223,264 mi
8
1%5:25 AME5:47 PMW-11:36 AMN223,039 mi
9
0%6:22 AME6:34 PMWNW-12:27 PMN224,030 mi
10
3%7:19 AMENE7:23 PMWNW-1:20 PMN226,168 mi
11
8%8:19 AMENE8:15 PMWNW-2:16 PMN229,248 mi
12
16%9:20 AMENE9:10 PMWNW-3:14 PMN232,961 mi
13
25%10:21 AMENE10:07 PMWNW-4:14 PMN236,952 mi
14
35%11:19 AMENE11:05 PMWNW-5:12 PMN240,872 mi
15
46%12:14 PMENE--6:08 PMN244,426 mi
16
50%-12:01 AMWNW1:05 PMENE7:00 PMN247,399 mi
17
65%-12:54 AMWNW1:50 PMENE7:47 PMN249,662 mi
18
74%-1:43 AMWNW2:31 PMENE8:31 PMN251,165 mi
19
82%-2:30 AMWNW3:09 PMENE9:12 PMN251,922 mi
20
89%-3:14 AMW3:45 PME9:51 PMN251,995 mi
21
94%-3:58 AMW4:20 PME10:30 PMN251,474 mi
22
98%-4:40 AMW4:55 PME11:09 PMN250,464 mi
23
100%-5:24 AMW5:31 PME11:49 PMS249,068 mi
24
100%-6:10 AMWSW6:10 PMESE--
25
100%-6:58 AMWSW6:53 PMESE12:32 AMS247,375 mi
26
97%-7:49 AMWSW7:39 PMESE1:19 AMS245,454 mi
27
93%-8:44 AMWSW8:31 PMESE2:10 AMS243,349 mi
28
87%-9:41 AMWSW9:27 PMESE3:05 AMS241,091 mi
29
78%-10:39 AMWSW10:26 PMESE4:03 AMS238,701 mi
30
68%-11:36 AMWSW11:26 PMESE5:02 AMS236,214 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 Port Moresby is essentially constant during April, remaining around 100% throughout.

For reference, on February 10, the muggiest day of the year, there are muggy conditions 100% of the time, while on August 13, the least muggy day of the year, there are muggy conditions 92% of the time.

Humidity Comfort Levels in April in Port Moresby

Humidity Comfort Levels in April in Port MoresbyApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%MarMayApr 1100%Apr 1100%Apr 30100%Apr 30100%Apr 11100%Apr 11100%Apr 21100%Apr 21100%miserablemiserableoppressiveoppressivemuggymuggy
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 Port Moresby is increasing during April, increasing from 7.7 miles per hour to 9.3 miles per hour over the course of the month.

For reference, on July 30, the windiest day of the year, the daily average wind speed is 12.9 miles per hour, while on March 22, the calmest day of the year, the daily average wind speed is 7.4 miles per hour.

Average Wind Speed in April in Port Moresby

Average Wind Speed in April in Port MoresbyApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphMarMayApr 17.7 mphApr 17.7 mphApr 309.3 mphApr 309.3 mphApr 118.2 mphApr 118.2 mph
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 Port Moresby throughout April is predominantly from the south, with a peak proportion of 61% on April 30.

Wind Direction in April in Port Moresby

Wind Direction in April in Port MoresbyWSApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%MarMaywestsoutheastnorth
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).

Port Moresby 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 Port Moresby is essentially constant during April, remaining within 1°F of 83°F throughout.

Average Water Temperature in April in Port Moresby

Average Water Temperature in April in Port MoresbyApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303078°F78°F79°F79°F80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°F86°F86°F87°F87°FMarMayApr 184°FApr 184°FApr 3083°FApr 3083°FApr 1184°FApr 1184°FApr 2183°FApr 2183°F
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 Port Moresby 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 April in Port Moresby

Time Spent in Various Temperature Bands and the Growing Season in April in Port MoresbyApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%MarMay100%Apr 16100%Apr 16comfortablewarmhot
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 Port Moresby are rapidly increasing during April, increasing by 878°F, from 8,114°F to 8,993°F, over the course of the month.

Growing Degree Days in April in Port Moresby

Growing Degree Days in April in Port MoresbyApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930308,000°F8,000°F8,200°F8,200°F8,400°F8,400°F8,600°F8,600°F8,800°F8,800°F9,000°F9,000°F9,200°F9,200°FMarMayApr 18,114°FApr 18,114°FApr 308,993°FApr 308,993°FApr 118,417°FApr 118,417°FApr 218,719°FApr 218,719°F
The average growing degree days accumulated over the course of April, 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 Port Moresby is essentially constant during April, remaining within 0.1 kWh of 4.7 kWh throughout.

Average Daily Incident Shortwave Solar Energy in April in Port Moresby

Average Daily Incident Shortwave Solar Energy in April in Port MoresbyApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhMarMayApr 14.8 kWhApr 14.8 kWhApr 304.6 kWhApr 304.6 kWhApr 114.7 kWhApr 114.7 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 Port Moresby are -9.443 deg latitude, 147.180 deg longitude, and 259 ft elevation.

The topography within 2 miles of Port Moresby contains significant variations in elevation, with a maximum elevation change of 764 feet and an average elevation above sea level of 278 feet. Within 10 miles contains significant variations in elevation (1,539 feet). Within 50 miles contains very significant variations in elevation (13,173 feet).

The area within 2 miles of Port Moresby is covered by artificial surfaces (90%), within 10 miles by water (43%) and trees (18%), and within 50 miles by water (54%) and trees (37%).

This report illustrates the typical weather in Port Moresby, 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 is only a single weather station, Jacksons International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Port Moresby.

At a distance of 4 kilometers from Port Moresby, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

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

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

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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