April Weather in Goroka Papua New Guinea

Daily high temperatures are around 72°F, rarely falling below 69°F or exceeding 74°F.

Daily low temperatures are around 61°F, rarely falling below 59°F or exceeding 63°F. The highest daily average low temperature is 61°F on April 22.

For reference, on September 17, the hottest day of the year, temperatures in Goroka typically range from 60°F to 74°F, while on July 31, the coldest day of the year, they range from 59°F to 72°F.

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.

Tobosi, Costa Rica (9,061 miles away) is the far-away foreign place with temperatures most similar to Goroka (view comparison).

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The month of April in Goroka experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 94% throughout the month.

The clearest day of the month is April 30, with clear, mostly clear, or partly cloudy conditions 6% of the time.

For reference, on January 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 97%, while on August 16, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 19%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Goroka, the chance of a wet day over the course of April is very rapidly decreasing, starting the month at 47% and ending it at 38%.

For reference, the year's highest daily chance of a wet day is 49% on February 10, and its lowest chance is 25% on August 23.

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 Goroka is rapidly decreasing, starting the month at 8.4 inches, when it rarely exceeds 14.1 inches or falls below 3.5 inches, and ending the month at 6.9 inches, when it rarely exceeds 13.0 inches or falls below 2.1 inches.

The highest average 31-day accumulation is 8.4 inches on April 3.

Over the course of April in Goroka, the length of the day is essentially constant. The shortest day of the month is April 30, with 11 hours, 54 minutes of daylight and the longest day is April 1, with 12 hours, 3 minutes of daylight.

The latest sunrise of the month in Goroka is 6:21 AM on April 1 and the earliest sunrise is 2 minutes, 18 seconds earlier at 6:18 AM on April 29.

The latest sunset is 6:23 PM on April 1 and the earliest sunset is 11 minutes earlier at 6:12 PM on April 30.

Daylight saving time is not observed in Goroka during 2025.

For reference, on December 21, the longest day of the year, the Sun rises at 6:02 AM and sets 12 hours, 29 minutes later, at 6:30 PM, while on June 21, the shortest day of the year, it rises at 6:27 AM and sets 11 hours, 46 minutes later, at 6:13 PM.

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.

The figure below presents a compact representation of key lunar data for April 2025. 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.

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 Goroka is essentially constant during April, remaining within 1% of 13% throughout.

The highest chance of a muggy day during April is 14% on April 25.

For reference, on April 25, the muggiest day of the year, there are muggy conditions 14% of the time, while on August 20, the least muggy day of the year, there are muggy conditions 1% of the time.

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 Goroka is essentially constant during April, remaining around 2.0 miles per hour throughout.

For reference, on September 5, the windiest day of the year, the daily average wind speed is 2.2 miles per hour, while on November 30, the calmest day of the year, the daily average wind speed is 2.0 miles per hour.

The lowest daily average wind speed during April is 2.0 miles per hour on April 20.

The hourly average wind direction in Goroka throughout April is predominantly from the north, with a peak proportion of 56% on April 5.

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 Goroka 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.

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 Goroka are rapidly increasing during April, increasing by 457°F, from 4,288°F to 4,745°F, over the course of the month.

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 Goroka is essentially constant during April, remaining within 0.1 kWh of 4.2 kWh throughout.

For the purposes of this report, the geographical coordinates of Goroka are -6.083 deg latitude, 145.387 deg longitude, and 5,187 ft elevation.

The topography within 2 miles of Goroka contains very significant variations in elevation, with a maximum elevation change of 1,083 feet and an average elevation above sea level of 5,103 feet. Within 10 miles contains very significant variations in elevation (7,156 feet). Within 50 miles also contains extreme variations in elevation (14,623 feet).

The area within 2 miles of Goroka is covered by trees (41%), cropland (29%), shrubs (18%), and grassland (11%), within 10 miles by trees (59%) and cropland (15%), and within 50 miles by trees (77%).