Average annual temperature is 22.5 °C
Absolute maximum temperature: 31.5 °C
Absolute minimum temperature: 15.0 °C
Number of sunny days: 36 days
Number of rainy days: 329 days
Look at detailed online map of Old Maria
* Weather data for Old Maria Papua New Guinea is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 29.6 | 29.3 | 29.6 | 30.1 | 30.3 | 28.7 | 29.1 | 27.9 | 30.1 | 29.2 | 31.5 | 29.5 |
| Average daytime temperature (°C) | 27.8 | 27.7 | 27.4 | 27.0 | 26.0 | 26.1 | 25.8 | 24.3 | 26.1 | 25.6 | 27.1 | 27.6 |
| Average temperature (°C) | 23.9 | 23.7 | 23.3 | 22.9 | 22.7 | 22.2 | 21.6 | 20.3 | 21.6 | 21.8 | 22.7 | 23.3 |
| Average night temperature (°C) | 21.1 | 21.0 | 20.3 | 20.2 | 20.8 | 19.7 | 19.0 | 17.9 | 18.8 | 19.6 | 19.6 | 20.2 |
| Absolute minimum temperature (°C) | 18.7 | 19.5 | 18.5 | 19.1 | 19.8 | 17.6 | 15.3 | 15.5 | 15.0 | 17.5 | 16.3 | 18.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 | 11.6 | 11.8 | 12.0 | 12.3 | 12.6 | 12.7 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 8.9 | 8.1 | 8.6 | 8.6 | 6.2 | 8.5 | 8.8 | 9.0 | 9.2 | 8.0 | 9.9 | 10.3 |
| Precipitation (mm) | 286 | 309 | 319 | 374 | 512 | 183 | 68 | 95 | 75 | 441 | 220 | 241 |
| Sunny days | 3 | 2 | 0 | 1 | 2 | 6 | 8 | 5 | 7 | 0 | 1 | 1 |
| Rainy days | 28 | 26 | 31 | 29 | 29 | 24 | 23 | 26 | 23 | 31 | 29 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Old Maria is at