Ocean Park Hong Kong’s penguin exhibit is in Polar Adventure at the Summit.
The official South Pole Spectacular page says the exhibit has more than 90 penguins, including king penguins, southern rockhopper penguins, and gentoo penguins. The temperature is kept at about 8 to 10°C. That is not decoration; it is the condition that lets cold-water species live steadily.
In a humid, hot city like Hong Kong, seeing penguins already carries a little tension.

What to see
The three species are easy to compare. King penguins are tallest, with orange-yellow neck patches; gentoos have white marks above the eyes; rockhoppers are small, strongly crested, and look like yellow exclamation marks when standing on rock.
The exhibit offers both overhead and underwater views. The moment worth waiting for is when they enter the water, because the difference between slow on land and fast underwater appears in one second.
If you are organizing East Asian city facilities, read this alongside Xpark and Taipei Zoo. Hong Kong’s feature is theme-park scale and a chilled polar zone.
To place the chilled Hong Kong exhibit back beside wild context, compare it with penguins in Antarctica. For a China and Greater Bay Area facility comparison, read Chimelong Ocean Kingdom Zhuhai next.

How to plan it
South Pole Spectacular is at the Summit, not beside the entrance. The hill transport, crowds, and weather all affect the rhythm, so it is better not to leave penguins as the final stop before closing.
An Ocean Park day can easily be cut apart by shows, rides, and restaurants. If you are mainly going for penguins, check the same-day Polar Adventure opening status after entering.
Outside the cold exhibit is Hong Kong’s humid heat. Clothing does not need to be dramatic, but children and older visitors may feel cold.

Penchan Says
The temperature gap is what deserves attention here.
It is not just strong air conditioning. Hong Kong has placed a small section of sub-Antarctic rhythm inside a theme park on a hill. You can see it, and you also have to ask what keeps it running.
References
FAQ
Which penguins are at Ocean Park Hong Kong South Pole Spectacular?
The official page currently lists more than 90 penguins, including king, southern rockhopper, and gentoo penguins; check same-day exhibit notices before visiting.
Is South Pole Spectacular really cold?
The article follows the official description of an exhibit kept at about 8 to 10°C, which is a husbandry condition for cold-water penguins rather than just scenery.
How should I plan a penguin visit at Ocean Park Hong Kong?
The exhibit is in Polar Adventure at the Summit, not near the entrance. If penguins are the priority, check the same-day status after entering and avoid leaving it as the last stop.