Main image

Graeme Bartlett CC BY-SA 4.0 Wikimedia Commons

De Witt Island

Island

Off southern Tasmania near Port Davey, De Witt Island sits within a remote island group; visitors arrive by private boat or charter for seabird colonies, rugged walking and sea‑kayaking.

De Witt Island HobartLaunceston, TasmaniaDevonport, TasmaniaBurnieDe Witt Island
In this guide

De Witt Island essentials

Address: De Witt Island, southern Tasmania, Australia
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Things to Do
When to Go

Best Time to Visit De Witt Island

Summer months provide the most reliable access; winter conditions in southern Tasmania can be severe and unpredictable.

Summer
December-February · 10-18°C
Best for boat access and mildest weather.

Weather & Climate near De Witt Island

Climate

Temperate climate with cool summers (peaking in February) and cold winters (coldest in July). Temperatures range from 5°C to 18°C. Abundant rainfall (1559 mm/year), wettest in July.

Air Quality: AQI 23 Good
Temperature & Rainfall
Temperature Range
19°
Warmest Month
5°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - 11° - 18° 14° 96 mm - - 6.9 m/s - -
February - 11° - 19° 15° 88 mm - - 7.3 m/s - -
March - 10° - 17° 14° 103 mm - - 7.5 m/s - -
April - 8° - 16° 12° 140 mm - - 7.0 m/s - -
May - 7° - 14° 10° 148 mm - - 8.4 m/s - -
June - 5° - 12° 5° 142 mm - - 6.8 m/s - -
July - 5° - 11° 4° 175 mm - - 7.4 m/s - -
August - 5° - 12° 5° 159 mm - - 7.1 m/s - -
September - 6° - 13° 6° 146 mm - - 8.4 m/s - -
October - 7° - 14° 11° 135 mm - - 7.6 m/s - -
November - 9° - 16° 12° 111 mm - - 7.9 m/s - -
December - 10° - 17° 14° 116 mm - - 6.8 m/s - -
Getting There & Around

How to Get to De Witt Island

Accessible only by private boat or charter from southern Tasmanian ports; plan via local skippers and check maritime weather and landing advisories. The nearest mainland access points depend on the island’s position along the southern coast.

Tips for Visiting De Witt Island

  • De Witt Island is remote-boat access is required and weather can close in quickly.
  • Check with Tasmanian Parks or local operators about landing rules and protected areas.
  • Bring supplies and plan for insect presence in warmer months.