The best times to visit Port Moresby for ideal weather are
June 4th to October 28th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Port Moresby Travel Guide
Other Port Moresby Travel Info
Weather in Port Moresby
Average temperatures in Port Moresby vary barely at all. Considering humidity, temperatures feel hot all year with a fair chance of precipitation about half of the year. The area is less temperate than some — in the 17th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Port Moresby, the hottest months are December, November, and then January. See average monthly temperatures below. The warmest time of year is generally early December where highs are regularly around 89.5°F (31.9°C) with temperatures rarely dropping below 77.2°F (25.1°C) at night.
Port Moresby Temperatures (Fahrenheit)
Port Moresby Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Port Moresby Perceived Temperature (F)
Port Moresby Perceived Temperature (C)
Average Port Moresby Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Port Moresby are July, August, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early September. For example, on the week of September 3rd there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid March with an average of 4 days of significant precipitation the week of March 12th.
When can you find snow in Port Moresby? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Port Moresby.
Snow on the Ground
The graph below shows the average snow on the ground in Port Moresby (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Port Moresby has some very humid months, and high humidity throughout the year. The least humid month is September (71.4% relative humidity), and the most humid month is April (79%).
Wind in Port Moresby is usually calm. The windiest month is July, followed by September and August. July’s average wind speed of around 7.3 knots (8.3 MPH or 13.4 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early September where average top sustained speeds reach 14.9 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Port Moresby.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||5.1||Light breeze||13.1||Significant breeze|
|Feb||4.2||Light breeze||11.4||Significant breeze|
|Mar||3.7||Barely noticeable||10.7||Significant breeze|
|Apr||3.2||Barely noticeable||9.7||Gentle breeze|
|May||4.8||Light breeze||10.8||Significant breeze|
|Jun||5.5||Light breeze||11.7||Significant breeze|
|Jul||7.3||Gentle breeze||13.4||Significant breeze|
|Aug||6.7||Light breeze||13.7||Significant breeze|
|Sep||6.7||Light breeze||13.8||Significant breeze|
|Oct||5.9||Light breeze||12.8||Significant breeze|
|Nov||4.5||Light breeze||11.1||Significant breeze|
|Dec||4.2||Light breeze||11.4||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Port Moresby?
Our best data indicates this area is somewhat safe. As of Oct 07, 2019 there are travel warnings for Papua New Guinea; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 20, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Port Moresby, Papua New Guinea is July, followed by September and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Port Moresby in December. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Port Moresby Travel Experience by Season
Fall (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 87.8°F (31°C) and 86.2°F (30.1°C) with similar temperatures in the later months. Rain is somewhat common with 4 to 12 days of significant precipitation per month. Fall is the second busiest for tourism, which makes it a good time for those looking for things to do.
Winter (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the least precipitation with 1 to 3 days of precipitation per month. June – August is the busiest season for tourism in Port Moresby, so lodging and other accommodations may cost more than usual.
Spring (September through November)
Spring daily highs range from 89.5°F (31.9°C) and 85.4°F (29.7°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 2 to 4 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.
Summer (December through February)
Weather is perfect this time of year in Port Moresby to be enjoyable for warm weather travelers. The average high during this season is between 89.5°F (31.9°C) and 87.8°F (31°C). On average, it rains or snows a fair amount: 6 to 9 times per month. These times of year are the slowest with tourists.