Last updated: August 22, 2025
In December, the average temperature in Kiama Heights, Australia is a pleasant 20°C (68°F). However, be prepared for temperature variations that can dip to a chilly 11°C (53°F) and soar up to a sweltering 36°C (97°F). With an average precipitation of 100 mm (4.0 in) spread over 15 days, you might encounter some rain, so pack accordingly! The humidity level stands at a comfortable 71%, adding to the overall climate experience.
In December in Kiama Heights, the average temperature is 20°C (68°F). Maximum temperatures can reach 36°C (97°F), while minimums can drop as low as 11°C (53°F). It's a great time to pack for a variety of weather conditions and enjoy both warm days and cooler evenings.
In Kiama Heights in December, the total precipitation amount is 100 mm (4.0 in) over the course of 15 days.
In Kiama Heights in December, humidity is 71%. With an average temperature of 20°C (68°F), this humidity feels like a warm, moist embrace that can quickly lead to discomfort for travelers. The air clings to your skin, making even short walks feel more strenuous, while reaching for a refreshing drink becomes essential to stay hydrated.
In Kiama Heights in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Kiama Heights, you can check here.
UV Risk Categories
Weather in Kiama Heights varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Kiama Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 22°C (71°F) | 70 mm (2.8 inches) | 70% | extreme |
| February Weather | 21°C (70°F) | 143 mm (5.6 inches) | 74% | extreme |
| March Weather | 20°C (67°F) | 195 mm (7.7 inches) | 73% | extreme |
| April Weather | 17°C (63°F) | 46 mm (1.8 inches) | 73% | very high |
| May Weather | 14°C (57°F) | 72 mm (2.9 inches) | 72% | moderate |
| June Weather | 12°C (53°F) | 74 mm (2.9 inches) | 70% | moderate |
| July Weather | 11°C (53°F) | 52 mm (2.0 inches) | 69% | moderate |
| August Weather | 12°C (53°F) | 71 mm (2.8 inches) | 68% | moderate |
| September Weather | 14°C (57°F) | 47 mm (1.9 inches) | 64% | high |
| October Weather | 16°C (61°F) | 105 mm (4.1 inches) | 61% | very high |
| November Weather | 18°C (64°F) | 122 mm (4.8 inches) | 64% | extreme |
| December Weather | 20°C (68°F) | 100 mm (4.0 inches) | 71% | extreme |