MyCruiseForecast

Papua New Guinea

Port Moresby cruise weather by month

What to expect when your ship is in Port Moresby in any month: temperatures, how often it rains, wind, sea temperature and wave heights.

Weather in Port Moresby by month

Average highs run from 84°F (29°C) in June to 88°F (31°C) in January. Rain falls on the fewest days in August and the most in December. Sea temperature and wave heights are for the water just off the port.

Typical conditions, 2022–2025 climate record (ECMWF). Rain days are days with at least 1 mm of rain or melted snow. These are averages, not a forecast.
MonthHigh / lowRain daysWindSea tempTypical seas
January88 / 74°F31 / 23°C74%8 mph14 km/h87°F31°C2 ft (0.6 m)Slight; rougher days up to 4 ft
February87 / 73°F30 / 23°C75%10 mph16 km/h86°F30°C3 ft (0.8 m)Slight; rougher days up to 5 ft
March87 / 74°F30 / 23°C87%8 mph13 km/h87°F30°C2 ft (0.7 m)Slight; rougher days up to 4 ft
April86 / 74°F30 / 23°C88%7 mph12 km/h87°F30°C3 ft (0.9 m)Slight; rougher days up to 5 ft
May85 / 74°F29 / 23°C70%9 mph14 km/h84°F29°C5 ft (1.6 m)Moderate; rougher days up to 7 ft
June84 / 73°F29 / 23°C49%10 mph16 km/h82°F28°C5 ft (1.6 m)Moderate; rougher days up to 7 ft
July85 / 73°F29 / 23°C50%11 mph19 km/h80°F27°C6 ft (1.7 m)Moderate; rougher days up to 7 ft
August85 / 73°F29 / 23°C32%14 mph23 km/h79°F26°C6 ft (1.7 m)Moderate; rougher days up to 8 ft
September86 / 73°F30 / 23°C59%12 mph20 km/h79°F26°C5 ft (1.5 m)Moderate; rougher days up to 8 ft
October87 / 74°F30 / 23°C71%11 mph17 km/h81°F27°C4 ft (1.3 m)Moderate; rougher days up to 6 ft
November88 / 74°F31 / 23°C73%9 mph15 km/h84°F29°C3 ft (0.9 m)Slight; rougher days up to 5 ft
December87 / 74°F31 / 23°C89%8 mph13 km/h87°F30°C2 ft (0.6 m)Slight; rougher days up to 3 ft

Check the forecast for your sailing

Upcoming cruises in Port Moresby

1 ship from 1 cruise line is scheduled here, 1 visit in total. The next 1:

DateShipStopSailing
Sun, Feb 282027ArtaniaPhoenix ReisenCalls149 nights from Savona

Ships that visit Port Moresby

Nearby cruise ports

Wave heights are significant wave height on the Douglas sea state scale. What the numbers mean for a cruise. Sources and method are on the about page.