Ushuaia in September
In September, Ushuaia averages 7°C (45°F) during the day and 1°C (34°F) at night, with around 10 days of rain (40 mm total).
ShoulderConditions are cold — pack winter layers. Plan for unsettled weather and bring rain gear.
September in Ushuaia is outside the typical sweet spot for sightseeing weather. It can still be a great time to visit if you have specific reasons (festivals, off-season pricing, etc.).
How September compares to the rest of the year in Ushuaia
September is in the middle of the year for warmth in Ushuaia (8th of 12) and moderately rainy compared to the rest of the year (9th of 12). Daytime temperature runs 2°C below the annual average (9°C). September runs 2°C warmer than August (5°C) and warms a further 3°C into October (10°C).
September sunrise & sunset in Ushuaia
Times shown for Ushuaia local time (America/Argentina/Ushuaia), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Ushuaia — September
Golden-hour and blue-hour windows for the 15th of September, in Ushuaia's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Ushuaia in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Ushuaia's popularity.
Crowds & pricing — September in Ushuaia
Ushuaia is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — September in Ushuaia
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Ushuaia in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 14°C / 57°F | 5°C / 41°F | 40 mm | 10 | 0 |
| February | 14°C / 57°F | 4°C / 39°F | 40 mm | 10 | 0 |
| March | 12°C / 54°F | 3°C / 37°F | 45 mm | 10 | 0 |
| April | 9°C / 48°F | 1°C / 34°F | 50 mm | 10 | 0 |
| May | 5°C / 41°F | -1°C / 30°F | 55 mm | 11 | 3 |
| June | 3°C / 37°F | -2°C / 28°F | 50 mm | 12 | 5 |
| July | 3°C / 37°F | -2°C / 28°F | 45 mm | 12 | 5 |
| August | 5°C / 41°F | -1°C / 30°F | 40 mm | 11 | 3 |
| September | 7°C / 45°F | 1°C / 34°F | 40 mm | 10 | 1 |
| October | 10°C / 50°F | 2°C / 36°F | 35 mm | 9 | 0 |
| November | 12°C / 54°F | 3°C / 37°F | 40 mm | 9 | 0 |
| December | 13°C / 55°F | 4°C / 39°F | 45 mm | 10 | 0 |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Ushuaia in September →
Frequently asked questions
How hot is Ushuaia in September?
In September, Ushuaia averages a high of 7°C (45°F) and a low of 1°C (34°F) — generally cold.
Does it rain a lot in Ushuaia in September?
September can be fairly wet in Ushuaia, with about 10 rainy days on average and roughly 1 snow days.
Is September a good time to visit Ushuaia?
September is cold. It suits travelers who are comfortable with cold weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Ushuaia in September?
Pack heavy winter layers, a coat, hat and gloves, plus a compact umbrella or rain jacket. See the full September packing list for Ushuaia for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.