Last updated: March 2, 2024
The weather in Heilbron, South Africa, during December is characterized by an average temperature of 21°C (69°F). Highs can soar to 32°C (90°F), while lows may dip to 11°C (52°F). Typically, the humidity level in Heilbron throughout December hovers around 81%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Heilbron averages 160 mm (6.3 inches) of rainfall, typically over the course of 17 rainy days. The month enjoys an average of 13 hours 49 minutes of daylight, with the sun shining for approximately 12 hours 23 minutes each day. Additionally, there is a 42% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In December, the UV Index in Heilbron reaches a maximum of 16, 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 | 2 | 5 | 9 | 12 | 15 | 16 | 14 | 11 | 8 | 4 | 2 | 1 | 0 |
| Exposure | Low | Moderate | VeryHigh | Extreme | VeryHigh | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 15 min | 30 min | 45 min | ||||||