Vice President Walter Mondale went fishing. Former secretary of state Henry Kissinger had lunch in Cuernavaca. Duke Zelbert is at the race track, Chuck Robb flew to Shanghai and the Carters went down the river. Anybody left over is probably on the Vineyard.

August in Washington will never be April in Paris, July in the Hamptons or Christmas at Vail.In fact, so many from social and official circles flee that summer vacationers can be classified into species. Like this:

The Experimentalists: This is an adverturesome group, a breed either bored with the traditional haunts or determined to blaze new trails far from the trendy. The Experimentalist likes to think of himself as inversely chic, a type who goes places so out that they're in.

Jimmy and Rosalynn Carter, of course, are Experimentalist trend-setters with their Midwest trip down the Mississippi. Vacationing in the heartland is about as far out as you can get, and is rarely done more often than one year in four-preferable the election one.

Corcoran Director Peter Marzio actually went to Florida for his summer vacation, which is grossly unfashionable unless you consider that it was his honeymoon. He wanted no madding crowds, plenty of moonlit becahes and all that other romantic stuff. "Wonderful," he says.

Doug and Diana Kiker are boycotting Bridgehampton this year and heading to Montreal's Ritz Carlton instead. That's because Diana Kiker is pregnant and refused to cook, "I'm not setting foot in a food store," she says.

Vice President Walter Mondale also went Canadian, which brings us to our next species:

The Nature Lover: Composed of joggers, tennis players and outdoorsy types, this group has a heavy concentration, of male politicians anxious for the rugged image.

The vice president, who jogs and plays tennis, spent a week with a bunch of his old Minnesota fishing buddies in southern Ontario. He was minus his wife, presumably spending his days swapping stories with the guys about the big one that got away. "It's one of his favorite getaways," said an aide who wasn't invited.

Sen. Robert Stafford (R-VT.) is using August to camp out in the Green Mountains of his native state and Neil Goldschmidt, the incoming transportation secretary, has plans to take a couple of days for mountain communing too. "It'll be in the Northwest, probably in one of the more idyllic, bucolic settings," says a Goldschmidt staffer.

But the call of the wild doesn't call everybody, especially those who can best be branded:

The Old Standbys: Or, who's on the Vineyard/in the Hamptons/ at Newport this summer? No surprises here. Columnist Art Buchwald is vacationing as usual in Vineyard Haven and socialite Jayne Ikard is nearby in Edgartown. She's restoring a clapboard house, reading "The Powers That Be" and ignoring the humidity. Others who've made sure they were seen on the island this summer include Jack and Mary Valenti and the Laughlin Phillipses.

Others non-surprises are Janet Auchincloss and Ina Ginsburg at Newport, R.I., unrelenting host Steve Martindale in the Hamptons, Russian Ambassador Anatoliy Dobrynin in Moscow and Cellar Door owner Jack Boyle in his Fort Lauderdale haunts.

Restaurateur Duke Zeibert is doing the same old thing too-only more of it. "I've got an automobile, a credit card and a set of golf clubs," he says."I'm heading for Saratoga, Delaware Park and Monmouth Park. I'll play golf in the afternoon and I'm not going to tell you what I'll do at night."

Lynda Robb, daughter of Lyndon Johnson and wife of the Virginia lieutenant governor, is another old standby with a vacation at the LBJ ranch in Texas. But her husband falls into the next category, which is:

Distant Shores: This is a group composed of individuals with fancy expense accounts and/or personal incomes large enough to forget not only the Vineyard, but the rest of America as well.

Chuck Robb opted for the expense account version of foreign travel. He went to Shanghai on what his office calls an "educational and cultural exchange trip" sponsored by the American Council of Young Political Leaders.

Hugh Jacobsen, the architect, went to Paros, a secluded island seven hours by boat from Athens: "I lay on the beach and didn't do a thing," he says. "For the first time in my life I didn't go over the hill to see the dear little chapel or the fresco."

Sen. John Warner (R-va.) and his wife, actress Elizabeth Taylor, went to England, the same place Rev. Timothy Healy, president of Georgetown University, visited last month.

"I'm very dull," Healy apologized. "It would be nice to say that while I was there I dated Zsa Zsa Gabor and ran up and down the coast of fundraising stops and spent time at Oxford, my alma mater. And I read some books-you know, those awful things."

Jack Carter, the eldest son of the president, was in the Virgin Islands this summer. But it was a working trip, designed to raise money for the territory's Democratic party. Business, pure business. No fun. No games.

Which brings up the next category:

The Workaholics: This is a group full of the driven and ambitious. They invariably recite: "Vacation? Are you kidding? I haven't had one in 15 years." This species is highly prevalent in Washington and tends to congregate around the White House.

Like Susan Clough, the president;s secretary. She's the originator of the no-time-off-in-15 years comment, although she admits to some long weekends. And after thinking a bit, she amends: "Wait, I have been away for one week. That was back in 1973 or 1974."

Then there's Sam Donaldson, ABC'S White House correspondent. His vacations, he says, are always working vacations. He's down the river with the Carters for his network, traveling via Winnebago along the banks. "We'll be dogging him and waiting for him to hit a submerged log," Donaldson says. "That's no vacation."

Chief Justice Warren Burger doesn't take time off, either. "Kind of married to his job," says a spokeswoman.

Others with no vacation plans include Roger Stevens, chairman of the Kennedy Center ("I've never had time"). Brock Adams, recently removed transportation secretary (too busy looking for a job), and White House Press Secretary Jody Powell (too busy with the likes of Sam Donaldson on the riverbanks).

Last but certainly not least among the workaholics is former secretary of state HENRY KISSINGER, a compulsive who works on his memoirs and skips lunch a lot unless he's in Mexico and the deposed shah of Iran is around. Then he'll eat, like he did earlier this month. Other than that, Kissinger has no formal vacation plans and a spokeswoman at his Georgetown University office answers a question of whether he's had any fun this summer with an unequivocal "No."

Which is the same answer you'll get if you ask CIA Director Stansfield Turner whether he's going anywhere this summer. And that brings up the next category of:

The Stay-At-Homes: These folks could be considered a less severe subgroup of the workaholics. True, they're not going anywhere, exotic or otherwise, but at least they're getting out of the office and into cleaning the basement.

Turner has no formal plans, although a spokesman in his office promises he'll be hanging around the house some. Bill and Buffy Cafritz aren't doing anything, and neither are Evan and Kit Dobelle, Rosalyn Carter's newly appointed East Wing staff director. "Things are always quieter in the summertime," says Dobelle, "but that really can be enjoyable."

And finally, we have a highly familiar Washington species best identified as:

The No Comments: This breed, which includes hotel chain owner J. Willard Marriott and inflation fighter Alfred Kahn, refuses to reveal vacation plans that are either so utterly exciting or embassassingly boring as to be stamped top-secret.

Only Gerald Rafshoon, the president's media adviser about whom the media hasn't had much good to say lately, let's up a little. He says he's going somewhere "without television that's outside the Washington Post circulation area."