Climate Chart of Port Moresby, Papua New Guinea
Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023
For Port Moresby, Papua New Guinea, the climate data cover 2013–2023. Monthly mean temperatures stay within the supplied range from August at 25.5 °C to December at 27.2 °C, giving a broad sense of the temperature pattern without describing daytime highs or day-to-day variation. Rainfall and sunshine also vary by month: the recorded extremes point to different parts of the year, so visitors may want to weigh their own priorities rather than look for one universally preferable time.
Climate overview
Temperature
The coolest monthly mean is 25.5 °C in August, while the warmest is 27.2 °C in December. These are monthly averages, not daytime maximum temperatures, and they do not show how much temperatures can vary from one day to another. The unweighted mean across the calendar-month means is 26.4 °C. It offers a compact overview of the period, but is not a day-weighted annual average or a prediction for any particular visit.
Rain
Mean daily rainfall reaches its highest monthly value in March at 9.84 mm/day, and its lowest in August at 1.56 mm/day. These daily means are not monthly rainfall totals; the lower mean does not guarantee dry days or indicate how often rain falls. Across the calendar-month means, the unweighted mean daily rainfall is 5.07 mm/day. It summarizes the supplied monthly averages rather than describing rainfall on a typical individual day.
Sunshine
Mean daily sunshine duration is highest in November at 10.81 hours/day and lowest in March at 8.53 hours/day. These averages can help with broad outdoor-planning expectations, but sunshine duration is not day length and does not promise clear conditions on a particular date. The unweighted mean across the calendar-month means is 9.58 hours/day per day. Treat it as a period-level summary, not a guarantee of daily sunshine.
Best Travel Time Guide for Port Moresby, Papua New Guinea: Ideal Seasons and Weather Insights
For visitors prioritising lower average rainfall, August is the conditional option, with mean daily rainfall of 1.56 mm/day; it does not guarantee rain-free days or quantify how frequently rain occurs. If travelling in March, when the mean daily amount is 9.84 mm/day, include rain-ready clothing and flexible plans for outdoor activities. Those prioritising cooler monthly averages may prefer August, with a mean temperature of 25.5 °C. This is a monthly mean rather than a daytime high, so it cannot specify conditions at a particular hour or on an individual day.
For daylight outdoor planning, November has the highest mean daily sunshine duration at 10.81 hours/day, while March has the lowest at 8.53 hours/day. These figures can inform broad expectations, but sunshine hours are not day length and do not ensure clear skies; the rainfall and temperature criteria may point to different travel choices.
Climate Data Overview for Port Moresby, Papua New Guinea
Explore the comprehensive climate data for Port Moresby, Papua New Guinea. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.
| Month | Average: Temperature °C | Rain (mm) / day | Snow (mm) / day | Sunshine (h) / day |
|---|---|---|---|---|
| Jan | 27.0 | 9.42 | 0.00 | 8.83 |
| Feb | 26.7 | 7.98 | 0.00 | 8.85 |
| Mar | 26.4 | 9.84 | 0.00 | 8.53 |
| Apr | 26.3 | 7.63 | 0.00 | 8.66 |
| May | 26.5 | 4.14 | 0.00 | 9.56 |
| Jun | 26.0 | 2.45 | 0.00 | 9.56 |
| Jul | 25.6 | 1.70 | 0.00 | 9.83 |
| Aug | 25.5 | 1.56 | 0.00 | 9.93 |
| Sep | 26.0 | 2.87 | 0.00 | 9.90 |
| Oct | 26.5 | 3.55 | 0.00 | 10.40 |
| Nov | 27.0 | 4.02 | 0.00 | 10.81 |
| Dec | 27.2 | 5.69 | 0.00 | 10.08 |
| Average | 26.4 | 5.07 | 0.00 | 9.58 |
