Last updated: August 22, 2025
In September, the average temperature in McMurdo Station, Antarctica is a brisk -24°C (-12°F), with extremes that can plunge to a chilling -37°C (-34°F) or rise to a manageable -12°C (10°F). Expect 21 mm (0.8 in) of precipitation over 4 days, complemented by a moderate average humidity of 67%. Prepare for the frosty conditions!
In September in McMurdo Station, the average temperature is -24°C (-12°F). Maximum temperatures can reach -12°C (10°F), while minimums can drop as low as -37°C (-34°F). Travelers should be prepared for extremely cold conditions and ensure they have appropriate winter clothing and gear.
In McMurdo Station in September, the precipitation amount is 21 mm (0.8 in) over a span of 4 days.
In McMurdo Station in September, humidity is 67%. With an average temperature of -24°C (-12°F), this humidity feels like an icy blanket wrapping around you, making travel cumbersome and uncomfortable as the moist air seeps into your layers, chilling you to the bone.
In McMurdo Station in September, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in McMurdo Station, you can visit Hourly UV Index in McMurdo Station.
UV Risk Categories
Weather in McMurdo Station varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in McMurdo Station, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (24°F) | 15 mm (0.6 inches) | 77% | high |
| February Weather | -9°C (16°F) | 20 mm (0.8 inches) | 79% | moderate |
| March Weather | -16°C (3°F) | 25 mm (1.0 inches) | 75% | low |
| April Weather | -22°C (-7°F) | 12 mm (0.5 inches) | 71% | low |
| May Weather | -21°C (-6°F) | 21 mm (0.8 inches) | 69% | low |
| June Weather | -23°C (-9°F) | 17 mm (0.7 inches) | 73% | low |
| July Weather | -24°C (-10°F) | 14 mm (0.5 inches) | 70% | low |
| August Weather | -25°C (-13°F) | 24 mm (0.9 inches) | 70% | low |
| September Weather | -24°C (-12°F) | 21 mm (0.8 inches) | 67% | low |
| October Weather | -18°C (0°F) | 19 mm (0.7 inches) | 73% | moderate |
| November Weather | -11°C (13°F) | 9 mm (0.4 inches) | 76% | very high |
| December Weather | -5°C (23°F) | 14 mm (0.5 inches) | 78% | high |