Last updated: March 2, 2024
The weather in Pematangsiantar, Indonesia, during December is characterized by an average temperature of 24°C (76°F). Highs can soar to 30°C (86°F), while lows may dip to 21°C (69°F). Typically, the humidity level in Pematangsiantar throughout December hovers around 88%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Pematangsiantar averages 322 mm (12.7 inches) of rainfall, typically over the course of 29 rainy days. The month enjoys an average of 11 hours 57 minutes of daylight, with the sun shining for approximately 8 hours 58 minutes each day. Additionally, there is a 9% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In December, the UV Index in Pematangsiantar reaches a maximum of 12, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 10 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 2 | 5 | 8 | 11 | 12 | 12 | 9 | 6 | 3 | 1 | 1 | 0 |
| Exposure | Low | Moderate | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | |||||