
Mount Wilhelm
- Annual mean
- 17.4 °C
- Warmest month
- December
- Wettest month
- March
Atmospheric averages recorded over three decades at a representative park coordinate.
Baiyer River Sanctuary experiences distinct annual fluctuations in temperature, humidity, and daily precipitation levels. These figures represent long-term climate normals calculated from 1991 through 2020 at a specific representative elevation of 1533.27 meters. Each monthly entry provides a baseline for understanding the atmospheric environment through data on mean, minimum, and maximum temperatures, as well as wind speed, relative humidity, and daylight hours.
Comparing twelve months of average daily temperatures and precipitation rates
Twelve-month comparison of temperature, precipitation, humidity, wind, and daylight norms
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 19 °C14.4° to 24.7° | 6.8 mm/day | 89.1% | 1.1 m/s | 12.3 hours |
| February | 19 °C14.6° to 24.6° | 7.1 mm/day | 89.6% | 1.1 m/s | 12.2 hours |
| March | 18.9 °C14.5° to 24.6° | 7.6 mm/day | 89.8% | 1.1 m/s | 12 hours |
| April | 18.8 °C14.4° to 24.1° | 8.2 mm/day | 90.7% | 1.1 m/s | 11.9 hours |
| May | 18.7 °C14.1° to 23.9° | 5.8 mm/day | 90.5% | 1.1 m/s | 11.8 hours |
| June | 18.4 °C13.8° to 23.5° | 4.7 mm/day | 90.5% | 1.1 m/s | 11.7 hours |
| July | 18.3 °C13.5° to 23.6° | 3.3 mm/day | 89.6% | 1.1 m/s | 11.7 hours |
| August | 18.5 °C13.2° to 24.2° | 2.9 mm/day | 87.8% | 1.2 m/s | 11.8 hours |
| September | 18.8 °C13.4° to 25.1° | 4 mm/day | 86.1% | 1.2 m/s | 12 hours |
| October | 18.9 °C13.5° to 25.3° | 5.1 mm/day | 86.2% | 1.1 m/s | 12.1 hours |
| November | 19 °C14.2° to 25.2° | 6.4 mm/day | 87.4% | 1.1 m/s | 12.3 hours |
| December | 19.1 °C14.3° to 25° | 6.7 mm/day | 88.7% | 1.1 m/s | 12.3 hours |
See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.
Comparative monthly averages for temperature, precipitation, wind, humidity, and daylight duration
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Analyze monthly temperature, precipitation, humidity, and daylight patterns across distinct protected landscapes.



Trace the boundaries and ecological profile of Baiyer River Sanctuary, an essential highland nature reserve in Papua New Guinea. MoriAtlas provides a structured look at the terrain, elevation, and forest conservation value of this significant ornithological refuge in the Western Highlands.