Last updated: March 2, 2024
The weather in Heilbron, South Africa, during January is characterized by an average temperature of 21°C (70°F). Highs can soar to 32°C (89°F), while lows may dip to 12°C (54°F). Typically, the humidity level in Heilbron throughout January hovers around 79%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In January, Heilbron averages 109 mm (4.3 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 13 hours 37 minutes of daylight, with the sun shining for approximately 10 hours 5 minutes each day. Additionally, there is a 27% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In January, the UV Index in Heilbron reaches a maximum of 15, 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 | 4 | 8 | 11 | 14 | 15 | 15 | 12 | 8 | 5 | 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 | ||||||