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Bahía Thetis Department

Province · Tierra del Fuego, 🇦🇷 Argentina
Area 8,788 km²
Time zone America/Argentina/Ushuaia
Bahía Thetis Department

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Featured Lists

//www.flickr.com/photos/galio/ / CC BY-SA 2.0

Bahía Thetis Essentials

This collection highlights the landmarks of Ushuaia and the Tierra del Fuego archipelago. It features the Tierra del Fuego National Park, where the Pan-American Highway ends at Bahía Lapataia, and the historic Southern Fuegian Railway. Cultural sites include the former prison—now the Maritime Museum—and the Acatushún Museum’s collection of marine skeletons. Natural highlights include the turquoise Laguna Esmeralda, the Martial Glacier, and the remote San Juan de Salvamento lighthouse on Isla de los Estados, which served as the inspiration for Jules Verne’s literature.

11 places
Patricia De Vivo / CC-BY-SA

Best of Bahía Thetis

This collection highlights the geographical diversity of the Ushuaia region, from the glacial waters of Lake Fagnano to the peat bogs of the Carbajal Valley. It features the historic Casa Beban, a 20th-century Swedish-style residence, alongside key observation points at Paso Garibaldi and within Tierra del Fuego National Park. These sites provide specific vantage points over the southern terminus of the Andes, the Beagle Channel, and the tectonic landscapes of the Fuegian archipelago.

9 places
Heretiq / CC BY-SA 2.5

Hidden Gems & Lighthouses

This collection highlights the rugged geography and maritime heritage of Tierra del Fuego. It spans from the historic maritime museum in Ushuaia's former prison to the remote lighthouses of San Juan de Salvamento and Cabo San Pio. The list features the Martial Glacier's ice fields, the southern terminus of the Pan-American Highway at Lapataia Bay, and the secluded shores of Bahía Thetis. These sites offer insight into the region's glacial landscapes, indigenous Yámana history, and its role in Antarctic exploration.

12 places
Igor Alvaro / CC-BY-SA

Mountain Peaks

This collection highlights the rugged summits of the southernmost Andes in Tierra del Fuego, ranging from the jagged silhouette of Monte Olivia near Ushuaia to the remote peaks of the Mitre Peninsula. It includes Monte Bove, the highest point on Isla de los Estados, and Cerro Castor, the world's southernmost ski mountain. These landmarks define a sub-Antarctic landscape of ancient glacial formations and steep, rocky terrain characteristic of the remote Fuegian wilderness.

15 places

Glaciers & Alpine Lakes

This collection highlights the glacial landscapes and high-altitude lakes of the Tierra del Fuego archipelago. Centered around the Martial Mountains and Sierra Alvear range near Ushuaia, these sites feature turquoise meltwater basins and hanging glaciers. Notable locations include Laguna Esmeralda, fed by the Ojo del Albino glacier, and the expansive Lago Fagnano, which sits atop the Magallanes-Fagnano tectonic fault. These landmarks demonstrate the region's dramatic sub-antarctic geology and its vital role in the local watershed.

12 places

Bahía Thetis Department — Map

Bahía Thetis Department — Map

Climate & when to visit

Select a month

Typical weather in January

Poor
  • 11° (feels like 7°) · extremes 1°–16°
  • 4° at night
  • 22 rainy days
  • 1 sunny day
  • 6 hours of sunshine per day
  • Dry air
  • Light breeze
  • 9°C · too cold to swim
  • UV index 6 · high

Typical weather in February

Poor
  • 11° (feels like 7°) · extremes 1°–17°
  • 4° at night
  • 18 rainy days
  • 2 sunny days
  • 6 hours of sunshine per day
  • Dry air
  • Light breeze
  • 9°C · too cold to swim
  • UV index 5 · moderate

Typical weather in March

Poor
  • 10° (feels like 5°) · extremes -1°–15°
  • 3° at night
  • 18 rainy days
  • 2 sunny days
  • 4 hours of sunshine per day
  • Dry air
  • Light breeze
  • 9°C · too cold to swim
  • UV index 3 · moderate

Typical weather in April

Poor
  • 7° (feels like 2°) · extremes -2°–12°
  • 1° at night
  • 17 rainy days
  • 1 sunny day
  • 3 hours of sunshine per day
  • Dry air
  • Light breeze
  • 8°C · too cold to swim
  • UV index 1 · low

Typical weather in May

Poor
  • 4° (feels like -1°) · extremes -5°–7°
  • -1° at night
  • 15 rainy days
  • 1 sunny day
  • 2 hours of sunshine per day
  • Dry air
  • Light breeze
  • 7°C · too cold to swim
  • UV index 0 · low

Typical weather in June

Poor
  • 1° (feels like -4°) · extremes -8°–5°
  • -3° at night
  • 16 rainy days
  • 0 sunny days
  • 2 hours of sunshine per day
  • Dry air
  • Light breeze
  • 7°C · too cold to swim
  • UV index 0 · low

Typical weather in July

Poor
  • 1° (feels like -5°) · extremes -9°–4°
  • -4° at night
  • 16 rainy days
  • 0 sunny days
  • 2 hours of sunshine per day
  • Dry air
  • Light breeze
  • 6°C · too cold to swim
  • UV index 0 · low

Typical weather in August

Poor
  • 2° (feels like -4°) · extremes -8°–5°
  • -3° at night
  • 15 rainy days
  • 1 sunny day
  • 3 hours of sunshine per day
  • Dry air
  • Light breeze
  • 5°C · too cold to swim
  • UV index 1 · low

Typical weather in September

Poor
  • 4° (feels like -1°) · extremes -6°–9°
  • -2° at night
  • 14 rainy days
  • 2 sunny days
  • 4 hours of sunshine per day
  • Dry air
  • Light breeze
  • 6°C · too cold to swim
  • UV index 2 · low

Typical weather in October

Poor
  • 7° (feels like 1°) · extremes -3°–11°
  • 0° at night
  • 16 rainy days
  • 2 sunny days
  • 5 hours of sunshine per day
  • Dry air
  • Light breeze
  • 6°C · too cold to swim
  • UV index 4 · moderate

Typical weather in November

Poor
  • 9° (feels like 4°) · extremes -2°–14°
  • 2° at night
  • 20 rainy days
  • 1 sunny day
  • 6 hours of sunshine per day
  • Dry air
  • Light breeze
  • 7°C · too cold to swim
  • UV index 5 · moderate

Typical weather in December

Poor
  • 11° (feels like 5°) · extremes 0°–15°
  • 3° at night
  • 22 rainy days
  • 1 sunny day
  • 7 hours of sunshine per day
  • Dry air
  • Light breeze
  • 8°C · too cold to swim
  • UV index 6 · high

Climate data: NASA POWER (MERRA-2); NASA POWER + Copernicus ERA5-Land; NASA POWER + Copernicus ERA5-Land and ERA5 · 1996–2025

Practical information

Currency
Argentine Peso ARS $ · Card payments · Commonly accepted
Emergency numbers
117
Electricity
Type C / Type I
220 V · 50 Hz
Languages
Spanish
Tap water
Safe to drink
Driving side
Right
Calling code
+54
Learn more

Tours & Activities

Riverside Hotel
Taxi · 8 min
Bahía Thetis Department
2h
Walk · 6 min
Corner Café
45 min
Walk · 18 min
Riverside Hotel

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Related destinations

Tierra del Fuego

Other Destinations

Tierra del Fuego National Park Ushuaia Bay

Data: © OpenStreetMap contributors, Wikidata, Wikipedia, Tripomatic, Official websites, geoBoundaries (CC BY 4.0).