December Weather in Heilbron

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%.

11°C (52°F)

Minimum temperature

21°C (69°F)

Average temperature

32°C (90°F)

Maximum temperature

81%

Humidity

Precipitation and Sunshine hours

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.

160 mm (6.3 inches)

Precipitation

17 rainy days

Rainy days

12 hours 23 minutes

Sunshine hours

42%

Chance of sun

UV Index

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.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  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

Compare Heilbron's Climate with Cities Worldwide