Kangaroo Island (Kingscote) weather in August

August in Kangaroo Island: cool, a little rain, with clean air — a good time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Kangaroo Island🇦🇺 Australia · Southeast Australia & Tasmania · Island68
  1. 88Jan
  2. 90Feb
  3. 89Mar
  4. 81Apr
  5. 71May
  6. 64Jun
  7. 62Jul
  8. 68Aug
  9. 75Sep
  10. 79Oct
  11. 82Nov
  12. 85Dec

#10 of 12 months in Kangaroo Island · #959 of 1413 destinations to visit in August · comfort 68/100 (tier C)

Days
16°C
Nights
7°C
Wet days
12
Sun
8.7 h
Humidity
74%
Daylight
11 h
Kangaroo Island, Australia
Photo: Nate Biddle · Pexels

Traveller notes on Kangaroo Island in August

Forum posters describe August as cold, windy and often rainy, with daytime temperatures commonly cited around 10-15C and a noticeable drop by late afternoon - a proper windproof jacket layered over a warm jumper, plus a beanie and gloves, is standard advice. Posters do note sunny morning stretches remain possible even within an otherwise unsettled week, and that quick, strong weather fronts are typical this time of year, with forecasts only considered reliable a few days out. The clear upside posters highlight: winter brings lush green countryside, flowing rivers and genuinely excellent wildlife viewing, with land mammals more likely to be seen out and about during the day rather than confined to dawn, dusk and night - and no mosquitoes to contend with.
Tripadvisor community · August · 1 month ago · Read more on Tripadvisor ↗

Other months in Kangaroo Island

Regulars are specific this falls within the lightest-wind stretch of the year here, April through June, early-month visitors commonly reporting comfortable low-20s temperatures and plenty of sunshine even as evenings turn genuinely chilly. Our row backs that mild, genuinely dry read, 21.6C over 11.1C nights feeling 9C, with rain minimal at 22.5mm across 4.3 days and a real 20.2 kph wind. Regulars are consistent golden autumn sunsets are a real late-afternoon highlight this time of year, sea conditions staying genuinely calm and benign for anyone planning boat trips or coastal walks. This remains one of the better windows to visit overall. The sea sits at a mild 18.5C. The record: 9.1 hours of sun, humidity 70 percent and AQI 25.
LightestWindsAprilThroughJune · April · 1 month ago · Read more on Tripadvisor ↗
Spring here is warm with occasional cool days and scattered rain, mostly fine, mid-twenties with the odd hotter day - which our row backs almost exactly at 21.8C reading as 21C, with 25.8mm across 5.2 days. The wildlife and the wildflowers are both at their best now, regulars say, more out and about than any other season. The one constant they will not let a visitor forget is the wind - cool, sometimes cold, off the ocean at any time of year, with southeasterlies typical from November through March - and our column carries a real 23.4 kph average. The sea is 16.8C, cool enough to be a look-don't-swim proposition for most. The record: humidity 67 percent, 11.7 hours of sun and AQI 28.
WindflowersAndAConstantWind · November · 1 month ago · Read more on Tripadvisor ↗
Regulars set expectations downward for December and are right to: not cold by northern standards, but not especially hot either, and nobody comes here to sunbathe. Wind is the constant - cool or cold off the ocean at any time of year, with south-easterlies usual from November through March and the calmest stretch falling in April to June. Our row measures it at 23.4 kph against 24.4C days that drop to 11.9C at night, and puts the sea at 17.9C, which settles the swimming question. What the month does offer is dry, bright weather for the wildlife: 22.8mm across 3.7 days and 12.3 hours of sun inside 14.5 of daylight. The record: humidity 66 percent and AQI 27.
NobodyComesHereToSunbathe · December · 1 month ago · Read more on Tripadvisor ↗
January is the busy month and the hot one - South Australians put the worst of the heat in late January and early February, and warn that away from a sea breeze the island bakes like the mainland during a heatwave. Our row's 25.7C monthly average is the Southern Ocean doing its work most days; the heatwave is what the average hides. The advice that actually changes a trip is about wildlife, which is the reason most people come: in midsummer the animals are largely nocturnal, so dawn and dusk are when you see them and the middle of the day is when you do not. South-easterlies run November to March, which our 23 kph reflects. The record: 14.2C nights, 21.4mm across 3.4 precipitation days, 12 hours of sun, a 19.6C sea and AQI 27.
TheAnimalsComeOutAtDusk · January · 1 month ago · Read more on Tripadvisor ↗

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Kangaroo Island climate normals — August

Daytime high16°C / 60°F🙂 cool
Nighttime low7°C / 45°F
Feels like (high)12°C / 54°F
Sea temperature14°C / 57°F🥶 cold sea
Rainfall57 mm / 2.3 in🌦 some rain
Rainy days12 days
Humidity74%💧 humid
Dew point8°C / 46°F
Sunshine8.7 h/day
Daylight10.8 h
Wind25 km/h / 15 mph
Air quality (US AQI)26🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Kangaroo Island in August

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Quietschool holidays in 2 of the markets that fill it, one of its worst months for weather(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Kangaroo Island's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Toughest weatherKangaroo Island's weather peaks January–March, best around February.

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Best weatherFair weatherToughest weather

What's on in Kangaroo Island in August

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Rule

    Seal Bay, ranger access only

    1 Jan – 31 DecBook early

    The sea lion beach can only be walked with a ranger on a timed tour, and the boardwalk above it is the alternative. Tours sell out in the holidays, so book before you take the ferry. Source ↗

  • Nature

    Southern right whales

    15 May – 30 Sep · usuallyWhale season

    Southern rights move along the north coast and into the bays through winter, with mothers and calves close in. Cliff tops do the job better than boats do here.

  • Season

    Quiet winter, shorter hours

    1 Jun – 31 AugOff-season shutdownClosures

    Winter is the island at its emptiest: some tours and cellar doors drop to weekends or shut altogether, and the ferry runs with space on it. Check opening hours rather than assume them.

  • Nature

    Spring wildflowers and orchids

    15 Aug – 31 Oct · usuallyWildflowers & blooms

    The heath along the western end flowers from late August, orchids included, and it is the part of the year the burnt country from the 2020 fires looks most like it is coming back.

What's on around the world in August →

Nearby, and something's on

Within 300 km of Kangaroo Island — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Kangaroo Island?

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Kangaroo Island in August — FAQ

Is August a good time to visit Kangaroo Island?
August in Kangaroo Island: cool, a little rain, with clean air — a good time to visit. It ranks #10 of 12 months for Kangaroo Island on SeasonMap's comfort score (68/100).
What is the weather like in Kangaroo Island in August?
In August, Kangaroo Island averages a daily high of 15.6°C and a low of 7°C, with about 57.2 mm of rain over roughly 11.6 rainy days.
What is the air quality in Kangaroo Island in August?
Kangaroo Island has a mean US Air Quality Index of about 26 in August.

Within 300 km: Adelaide's Southern right whales around 1 Jun – 15 Oct.