An old lighthouse marks the location, perched high above the ocean on the top of the sandstone cliffs at Booderee National Park.

National park visitors services manager John Harvey said the steep cliffs and the topography of the area meant it was an ideal location to spot whales.

"Jervis Bay and our park juts out that little bit more into the ocean," Mr Harvey said.

"When the whales are travelling north, they stay close to the coast to avoid the east Australian current. Because we're out that little bit further into the ocean, it's a perfect spot for the whales who do a diversion around the cliff."

The most common sightings were of humpback whales, but there had also been sightings of southern right whales.

Mr Harvey said a record number of the mammals have been spotted off the coast this season.

"For people visiting here, there's a pretty high likelihood that you'll see a whale if you stay long enough."

Meanwhile, marine mammal research group ORRCA had positive results from their 20th annual whale census, held in June.

Vice-president Shona Lonagon said sightings from Booderee on the day of the census had increased four-fold compared with last year.

"The numbers have been increasing every year," she said. "Last year there weren't as many because weather played a part, but 130 [spotted this year] is a huge amount."

Ms Lonagon said across the state there had been 2300 sightings in total.

"The official scientific estimate of the east coast population is 30,200 whales heading north this year," she said.

"That's absolutely phenomenal ... It's growing at a rate of 10.9 per cent every year."

Dolphin Watch Cruises manager Sam Tooley said land-based whale watching was a sight to behold, but nothing beats getting up close and personal.

"There is certainly a lot of activity out there at the moment," Mr Tooley said.

"It's thick and fast. It's worth getting out there because we're in the peak of the northern migration."

He said if you're in the right place at the right time, you can experience rare events like seeing new-born calves with their mothers.

"It's not unheard of to have whales born on their northern migration. Last year we had a whale born in Jervis Bay that hung around for a couple of days before heading outside."

HUMPBACK CALF ANNOUNCEMENT! We have just had reports of 2 Adult Humpback Whale inside Jervis Bay off Callala Beach WITH A NEWBORN CALF! Our Captain Tim, has seen many many whales in his time but never has he seen one this tiny! He believes the Calf has been born in the bay during the last day or so. We hope to have more images shortly. You can see the calfs sweet little nose at the 2 second mark. Explorer is also reporting many breaching whales at the entrance to the Jervis Bay! A day this extrodinary does not happen too often! #unspoilt #jervisbay #whataday #newborncalf ORRCA Wild About Whales NSW Booderee National Park Parks Australia Dolphin Watch Cruises - Jervis Bay Discover Jervis Bay Marine Mammal Research Unit JB Marine Mammal Sightings Australia Australian Marine Mammal Conservation Foundation Whales Australia Jervis Bay Jervis Bay Maritime Museum & Gallery jervisbaytourism.com.au Dive Jervis Bay Jervis Bay Stand Up Paddle Sea Kayak Jervis Bay Worrowing at Jervis Bay Huskisson Beach Tourist Resort Huskisson Beach MotelPosted by Dolphin Watch Cruises - Jervis Bay on Thursday, July 6, 2017

BRAND NEW BABY WHALE! This morning we spotted a whale logging in Twofold Bay. When we checked it out it was a mother and...Posted by Cat Balou Cruises on Tuesday, July 4, 2017