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.

 

 


Other Port Moresby Travel Info

Weather in Port Moresby

Temperature

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)

Key
High
Average
Low

Port Moresby Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

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)

Key
High
Average
Low

Port Moresby Perceived Temperature (C)

Key
High
Average
Low

 

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.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 88.6 81.5 75.6
Feb 88.4 81.3 75.6
Mar 87.3 80.5 75.2
Apr 87.2 80.7 75.5
May 86.5 80.7 75.7
Jun 85.5 79.7 75.2
Jul 84.7 78.6 73.7
Aug 85.2 78.8 73.9
Sep 85.9 79.7 75
Oct 87.5 80.8 75.6
Nov 88.5 81.8 76.3
Dec 89.4 82.3 76.4

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 31.4 27.5 24.2
Feb 31.3 27.4 24.2
Mar 30.7 26.9 24
Apr 30.7 27.1 24.2
May 30.3 27.1 24.3
Jun 29.7 26.5 24
Jul 29.3 25.9 23.2
Aug 29.6 26 23.3
Sep 29.9 26.5 23.9
Oct 30.8 27.1 24.2
Nov 31.4 27.7 24.6
Dec 31.9 27.9 24.7

 


 

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.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Port Moresby (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 29% 0 6.8
Feb 29% 0 5.2
Mar 38% 0 10.5
Apr 23% 0 5.8
May 13% 0 2.2
Jun 11% 0 2.9
Jul 4% 0 0.5
Aug 7% 0 0.9
Sep 7% 0 1.4
Oct 8% 0 1.4
Nov 13% 0 3.1
Dec 19% 0 2.7

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 29 0 17.3
Feb 29 0 13.2
Mar 38 0 26.7
Apr 23 0 14.7
May 13 0 5.6
Jun 11 0 7.4
Jul 4 0 1.3
Aug 7 0 2.3
Sep 7 0 3.6
Oct 8 0 3.6
Nov 13 0 7.9
Dec 19 0 6.9

 

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.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

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
Jan 73.8%
Feb 74.9%
Mar 78%
Apr 79%
May 77%
Jun 76.9%
Jul 71.5%
Aug 71.6%
Sep 71.4%
Oct 72.3%
Nov 73.4%
Dec 72.4%

 

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

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 58.3 in December means 58.3% of the tourists vs. July.

 

 

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.

 

Best Times to TravelPapua New Guinea › Port Moresby, Papua New Guinea