The Union Square Greenmarket is open on Mondays, Wednesdays, Fridays and Saturdays, from 8am to 6pm, year round. Those four days are the single most useful piece of scheduling information for anyone eating around this square, and most visitors learn them by turning up on a Tuesday to an empty plaza. August is the month the market is most worth planning a day around, and the three weekday openings pair with a sit-down lunch in a way the Saturday one does not. Here is how to build the day.

Quick Answer

Market days are Monday, Wednesday, Friday and Saturday, 8am to 6pm, on 17th Street between Broadway and Park Avenue South and along Union Square West between 17th and 15th. Go early for produce and light crowds. The weekday markets are the better pairing with a proper sit-down lunch, since Saturday brings the heaviest foot traffic and is the one day excluded from NYC Restaurant Week. Compost drop-off closes an hour before the market does, at 5pm.

The four days are not interchangeable

Same hours, different days, different experience.

The market has run since 1976, when it started with a handful of farmers. In peak season it carries roughly 140 regional farmers, fishers and bakers, and GrowNYC counts up to 60,000 visitors on an open day. That number lands very differently across the week.

Saturday is the full version — the most vendors, the most people, and the day to go if the market itself is the outing. It is also the hardest day to move a shopping bag through the aisles at noon.

Monday, Wednesday and Friday are the working days. Fewer people, easier browsing, and the plaza empties out enough by early afternoon that you can go straight from the stalls to a table without carrying half the market through a crowded dining room.

If you are shopping seriously, early matters more than the day. The stalls are set by 8am and the best of anything perishable moves in the first couple of hours.

What August actually brings

Late summer is the peak of the Northeast growing season, and the market reflects it. This is the stretch when tomatoes are worth buying, along with sweet corn, peaches and plums, peppers, eggplant, zucchini and summer squash, green beans and basil by the armful. It is the shortest window of the year for most of it.

That matters for eating out as much as for cooking. A kitchen near the square that changes its menu with the season will be showing you those same ingredients in August, and the overlap is a fair test of whether a seasonal claim on a menu means anything. If a restaurant three blocks from the market is running a tomato dish in August, the timing is at least honest. If the menu reads identically in February, the word “seasonal” on it is decoration.

Our rundown of which kitchens near the square actually rewrite their menus with the season goes through that restaurant by restaurant.

How to read late summer on an Italian menu

Italian cooking is unusually legible this time of year, because so much of the southern repertoire was built around exactly what is on the tables outside right now.

• Tomatoes turn up raw, dressed simply, or barely cooked. A sauce that tastes bright rather than deep is an August tomato sauce, not a winter one built from tinned fruit — and both are legitimate, they are just different dishes.
• Eggplant shows up grilled, in a caponata, or layered. Late summer is when it stops being a compromise.
• Zucchini appears in flowers as well as fruit. Fried squash blossoms are a genuine seasonal marker; nobody runs them in November.
• Basil should be in something. If a kitchen is buying locally at all in August, this is the cheapest and most obvious tell.
• Corn is the one that gives a modern kitchen away, since it is not traditional in Italy but it is unavoidable in New York in August. A corn pasta on an Italian menu is a chef cooking the market rather than the canon, which is a reasonable thing to want.

None of this requires a menu to say “farm to table” anywhere on it. The ingredients do the talking.

Fitting a meal around the market

The timing problem is real. The market runs 8am to 6pm. Most Italian dinner service near the square starts at 5pm. Lunch is where the two actually meet, and lunch near Union Square is thinner than people expect — a good number of the Italian rooms here do not open their doors until the evening. Our guide to where to get a sit-down Italian lunch near the square sorts out which ones do.

The workable shapes:

Market morning into lunch. Arrive at the stalls between 8 and 10, shop, then eat at 11:30 or noon. Best on a Monday, Wednesday or Friday.

Late market into aperitivo. Shop in the afternoon, then take the early-evening window before dinner service builds. The afternoon drink windows near the square run earlier than most people assume.

Saturday market into a long lunch. Fine, but book it. Saturday is the day to have a table waiting rather than to go looking for one.

The Restaurant Week overlap, through 16 August

One piece of timing worth knowing this week specifically. NYC Restaurant Week Summer 2026 runs from 20 July through 16 August, with prix fixe lunch and dinner menus at $30, $45 and $60. Saturdays are excluded from the programme, and participation runs Monday to Friday with Sundays at select restaurants.

Line that up against the market calendar and the answer is clean: Monday, Wednesday and Friday are the three days this month when the Greenmarket is open and Restaurant Week pricing applies. Saturday gives you the biggest market and no prix fixe. After 16 August the prix fixe menus end and the market carries on unchanged.

Where Isabelle’s fits a market day

Isabelle’s Osteria is at 245 Park Avenue South, a few blocks north of the market along the same avenue the 17th Street stalls run to — close enough that it is a walk rather than a trip, but not on the square itself.

Its own site lists a two-course Restaurant Week lunch at $30, served Monday to Friday from 11:30am to 4pm. That window is the useful detail for anyone shopping in the morning: it opens while the market is still busy and runs late enough that a slow browse does not cost you the table. The site describes the kitchen as working with homemade pastas and seasonal dishes across a 150-seat room, and lists an Aperitivo Hour menu on weekday afternoons if you would rather shop first and sit down later.

Restaurant Week pricing ends on 16 August, so this applies to the coming week and not beyond it. Check the current menus before you plan around a specific price.

Frequently Asked Question

Is the Union Square Greenmarket open on Sundays?

No. The market runs Monday, Wednesday, Friday and Saturday only, 8am to 6pm, all year. Sunday is the day most people get wrong, probably because weekend farmers’ markets are the norm elsewhere in the city. If you are in the neighborhood on a Sunday and wanted the market, you have missed it by a day in either direction — Saturday is the big one and Monday reopens. Restaurants around the square keep their own Sunday hours regardless, and several run brunch.

Planning the day

Check the market calendar before you build a morning around it, since holiday weeks occasionally shift things, and confirm restaurant hours the same day if the plan is tight. Market details above come from GrowNYC and Restaurant Week dates from NYC Tourism, both read in August 2026. If the weekend is the only time you can go, the brunch windows near the square pair better with a Saturday market than a full lunch service does.

Editor’s note: Isabelle’s Osteria is affiliated with this publication. Restaurants were selected using the criteria described above.