Last updated: March 2, 2024
The weather in Grytviken, South Georgia and the South Sandwich Islands, during December is characterized by an average temperature of 2°C (35°F). Highs can soar to 6°C (43°F), while lows may dip to -2°C (29°F). Typically, the humidity level in Grytviken throughout December hovers around 90%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Grytviken averages 122 mm (4.8 inches) of rainfall, typically over the course of 21 rainy days. The month enjoys an average of 17 hours 4 minutes of daylight, with the sun shining for approximately 6 hours 48 minutes each day. Additionally, there is a 20% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In December, the UV Index in Grytviken 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 | 3 | 6 | 9 | 12 | 14 | 16 | 16 | 14 | 11 | 8 | 5 | 2 | 1 |
| Exposure | Moderate | High | VeryHigh | Extreme | VeryHigh | Moderate | Low | ||||||
| Time to burn | 30 min | 25 min | 15 min | 10 min | 15 min | 30 min | 45 min | ||||||