Opal Social Club

Nightclubs & Karaoke in Mountain View, California

3.7 (306)

CategoryNightclubs & Karaoke · Banquet hall, Bar, Dance club, Lounge bar
Address251 Castro St, Mountain View, CA 94041
AreaMountain View, California
Phone(510) 766-1057
Websiteopalbyarena.com ↗
Google rating 3.7 (306)

Hours

MondayClosed
TuesdayClosed
WednesdayClosed
ThursdayClosed
Friday9 pm–1:30 am
Saturday9 pm–1:30 am
SundayClosed

About Opal Social Club

Opal By Arena is now open for drinks and dancing with the Bay Area's hottest DJs! Visit our website for our social calendar or message @OpalSocialClub on IG for VIP and Guest List reservations.

Opal Event Center is Silicon Valley's top-rated venue for corporate, private, and social events. This turnkey venue features complimentary event planning service, sound, lighting, and AV technology along with gourmet in-house catering and versatile furniture and decor

Opal is currently available for special event buyouts.

Opal Social Club is one of the nightclubs & karaoke listed in Mountain View, California. The business is registered at 251 Castro St, Mountain View, CA 94041; use this page to check its hours, phone number and Google rating before you make the trip. Google also lists it under banquet hall, bar, dance club, which is worth knowing if you are comparing several options in the area.

For a place to eat or drink, the questions that matter most are simple: is it open now, how long is the wait at peak hours, and does the menu suit the group you are bringing. American restaurants typically run lunch and dinner services with a quieter stretch in between, coffee shops open early, and many kitchens close earlier on Sunday. Cards and tap-to-pay are accepted almost everywhere, a tip of 15-20% is customary for table service, and sales tax is added at the register.

Hours are published for 2 days a week. On most of those days it is open 9 pm–1:30 am. It is closed on Monday, Tuesday, Wednesday, Thursday, Sunday. Hours in the United States do change around federal holidays and long weekends, so a quick call before a special trip is sensible. You can reach Opal Social Club at (510) 766-1057; calling is usually the quickest way to ask about availability, prices or directions. Its website is opalbyarena.com, where you may find menus, price lists or booking options.

Its Google rating is 3.7 out of 5 from 306 reviews, a solid but mixed picture; reading the most recent reviews will tell you what to expect.

Mountain View is in California, on the West Coast, where the climate ranges from foggy coast to hot inland valleys, wildfire season can affect air quality in late summer, and traffic is the main thing to plan around. Traffic in Mountain View peaks on weekday mornings and afternoons, so allow extra time then. Addresses read from the street number up to the city, state abbreviation and five-digit ZIP code; the map link on this page shows the exact spot.

See the other nightclubs & karaoke in Mountain View listed below to compare ratings, hours and locations before you decide. Details on this page come from public sources and may change; confirm anything important by phone before relying on it. Business owners can claim the listing to keep it up to date.

Is this your business? Claim this listing to update details, add photos and get a verified badge. Want more customers? Feature it at the top of nightclubs & karaoke in Mountain View.

Latest Google reviews

The 5 most recent reviews shown on Google Maps. Reviews belong to their authors; read all of them on Google.

Andrew Matthews 5 months ago

Honestly, this was almost a one-star experience, but I’ll give it two stars because a couple things saved it. First off, the female bartender with the curly hair was really unpleasant. She wasn’t friendly at all and looked like she didn’t want to be there. What really threw me off though was that she kept biting her fingernails and literally spitting them on the floor behind the bar. That’s honestly hella gross, especially coming from someone serving drinks. It made the whole bar area feel unsanitary and just uncomfortable to watch. That said, I will give credit where it’s due. The security guards were actually really cool. They were professional, respectful, and had a good vibe when people were coming in. They seemed like they were doing a solid job keeping things under control without being rude or aggressive. Also, the price is right. It’s free before 11:30, which is hard to beat, and the music was good. The DJ definitely kept the energy up and people were dancing. Overall, the place could be fun, but that bartender experience really left a bad impression. If they cleaned that up and had staff who were a little more professional behind the bar, it would make a big difference.

Zinzu Bobby 8 months ago

Absolute Rocking Desi DJ to welcome 2026 with a Bang. Played Popular Numbers with cool sound system and balloon drop at midnight. Good Organization to manage the crowd at check in with courteous hostess. Easy Chill

Heghine-Ellen Petrosyan 9 months ago

Nice space for dancing, but unfortunately the cocktails weren’t good. There was also no sign or notice at the entrance about what type of event was happening. After paying the entrance fee, we realized it was a special celebration for a national holiday from another country, with music in a language we didn’t understand. We didn’t feel like it was the right event for us, so we left the club after about an hour.

J Valdez a year ago

Great little shack. We held our event here and it couldn't have been better. The highlight of this club is the sound system and lights. I was very impressed. For being a smaller space it felt roomy. The local area is very safe and plenty of parking in the back or across.

Jay Akhtar 3 years ago

Literally there’s no one in the club on a Saturday night. Just few folks who came for birthday celebrations. On top of that they were charging a $10 cover fee for nothing. Bar tender said they do not have Jameson whiskey. Not a good experience at all.

All reviews on Google ↗

Frequently asked questions

Where is Opal Social Club located?

Opal Social Club is at 251 Castro St, Mountain View, CA 94041, in Mountain View, California. Use the “Open in Google Maps” button on this page for directions.

What kind of business is Opal Social Club?

Opal Social Club is listed as a nightclub and is also tagged on Google as banquet hall, bar, dance club.

What are the hours of Opal Social Club?

Published hours are Monday: Closed; Tuesday: Closed; Wednesday: Closed; Thursday: Closed; Friday: 9 pm–1:30 am; Saturday: 9 pm–1:30 am; Sunday: Closed. It is closed on Monday, Tuesday, Wednesday, Thursday, Sunday. Hours can change on holidays, so call before a special trip.

Is Opal Social Club open on Sunday?

No, Opal Social Club is closed on Sunday.

What is the phone number of Opal Social Club?

You can call Opal Social Club at (510) 766-1057.

How is Opal Social Club rated on Google?

Opal Social Club has a Google rating of 3.7 out of 5 from 306 reviews.

Does Opal Social Club have a website?

Yes, the website of Opal Social Club is opalbyarena.com (linked on this page).

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