This report describes the typical weather at the Momote Airport (Manus Island, Papua New Guinea) weather station over the course of an average year. It is based on the historical records from 2006 to 2012. Earlier records are either unavailable or unreliable.
Manus Island has a tropical rainforest climate with no dry season. The area within 25 mi of this station is covered by oceans and seas (90%) and forests (10%).
Over the course of a year, the temperature typically varies from 77°F to 87°F and is rarely below 75°F or above 89°F.
The warm season lasts from November 20 to December 23 with an average daily high temperature above 87°F. The hottest day of the year is November 30, with an average high of 87°F and low of 79°F.
The cold season lasts from July 20 to August 11 with an average daily high temperature below 86°F. The coldest day of the year is February 19, with an average low of 77°F and high of 87°F.
The length of the day does not vary substantially over the course of the year, staying within 14 minutes of 12 hours throughout. The shortest day is June 20 with 12:00 hours of daylight; the longest day is December 21 with 12:14 hours of daylight.
The earliest sunrise is at 5:48am on November 12 and the latest sunset is at 6:30pm on February 11. The latest sunrise is at 6:19am on February 19 and the earliest sunset is at 5:59pm on October 24.
Daylight saving time (DST) is not observed in 2012.
The median cloud cover ranges from 66% (partly cloudy) to 88% (mostly cloudy). The sky is cloudiest on January 21 and clearest on June 13. The clearer part of the year begins around February 21. The cloudier part of the year begins around June 16.
On June 13, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 13% of the time, and overcast or mostly cloudy 16% of the time.
On January 21, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 19% of the time, and clear or mostly clear 0% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around April 3, occurring in 29% of days. Precipitation is least likely around January 6, occurring in 18% of days.
Over the entire year, the most common forms of precipitation are moderate rain and light rain.
Moderate rain is the most severe precipitation observed during 50% of those days with precipitation. It is most likely around April 3, when it is observed during 18% of all days.
Light rain is the most severe precipitation observed during 37% of those days with precipitation. It is most likely around July 13, when it is observed during 11% of all days.
During the warm season, which lasts from November 20 to December 23, there is a 23% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of light rain (40% of days with precipitation have at worst light rain), moderate rain (39%), thunderstorms (15%), and heavy rain (7%).
During the cold season, which lasts from July 20 to August 11, there is a 24% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of moderate rain (44% of days with precipitation have at worst moderate rain), light rain (42%), thunderstorms (9%), and heavy rain (5%).
Either snow is exceptionally unlikely to fall at any time during the year at this location or this station does not reliably report precipitation types.
The relative humidity typically ranges from 65% (mildly humid) to 95% (very humid) over the course of the year, rarely dropping below 59% (mildly humid) and reaching as high as 100% (very humid).
The air is driest around October 25, at which time the relative humidity drops below 67% (mildly humid) three days out of four; it is most humid around April 1, exceeding 94% (very humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a year, the dew point typically varies from 72°F (very muggy) to 78°F (oppressive) and is rarely below 71°F (muggy) or above 79°F (oppressive).
Over the course of the year typical wind speeds vary from 0 mph to 13 mph (calm to moderate breeze), rarely exceeding 17 mph (moderate breeze).
The highest average wind speed of 7 mph (light breeze) occurs around August 13, at which time the average daily maximum wind speed is 11 mph (gentle breeze).
The lowest average wind speed of 4 mph (light breeze) occurs around April 17, at which time the average daily maximum wind speed is 9 mph (gentle breeze).