Port Moresby weather in May
May in Port Moresby: sweltering, soaked, with clean air — a good time to visit.
#9 of 12 months in Port Moresby · #525 of 604 destinations to visit in May · comfort 61/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Port Moresby climate normals — May
| Daytime high | 29°C / 85°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 24°C / 75°F | |
| Feels like (high) | 34°C / 93°F | |
| Rainfall | 197 mm / 7.7 in | ⛈ soaked |
| Rainy days | 16 days | |
| Humidity | 87% | 💦 very humid |
| Dew point | 24°C / 75°F | |
| Sunshine | 9 h/day | |
| Daylight | 11.7 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 32 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Port Moresby in May — FAQ
- Is May a good time to visit Port Moresby?
- May in Port Moresby: sweltering, soaked, with clean air — a good time to visit. It ranks #9 of 12 months for Port Moresby on SeasonMap's comfort score (61/100).
- What is the weather like in Port Moresby in May?
- In May, Port Moresby averages a daily high of 29.3°C and a low of 23.9°C, with about 196.7 mm of rain over roughly 15.8 rainy days.
- What is the air quality in Port Moresby in May?
- Port Moresby has a mean US Air Quality Index of about 32 in May.