Most Popular Online Casinos in September

GambleZen Casino

Discover Nature’s Hidden Treasures with €3,625 in Your Backpack

Sign-up Bonus:

50

Free Spins

No deposit required

Terms & Conditions apply ·  Play responsibly

GambleZen Casino

Discover Nature’s Hidden Treasures with €3,625 in Your Backpack

  • 50 Free Spins · No deposit required
  • Bonus Code: GZ50
  • Exclusive No-deposit Bonus – Available in Portugal and Selected Countries
  • 200% Bonus up to €500 + 100 Free Spins with your first deposit (New customers)
  • Bonus available on your second and third deposit
  • GambleZen Casino offers exclusive bonuses for CasinoBonusCenter visitors
  • Portuguese players are accepted
  • Accepts Bitcoin and other cryptocurrencies
  • Play instantly in your browser – No installation required
  • Mobile-friendly games · Enjoy playing on smartphones and tablets
  • Live Casino · Play against real croupiers at GambleZen Casino
  • Available in multiple languages, including English
  • Tested and certified by Casino Bonus Center · Rating: 4.2/5
  • Popularity: This offer has been claimed by 403 visitors so far this month.
  • 86 Game Providers: Platin Gaming, Ezugi, Onlyplay, OctoPlay, Fugaso, Pragmatic Play, LiveGames, XProGaming, KA Gaming, Evolution Gaming, Betsolutions, Playtech, and others.

KikoBet

20 Free Spins for new players from Portugal plus a €450 Welcome Package!

Sign-up Bonus:

20

Free Spins

No deposit required

Terms & Conditions apply ·  Play responsibly

KikoBet

20 Free Spins for new players from Portugal plus a €450 Welcome Package!

  • 20 Free Spins · No deposit required
  • 100% Bonus up to €200 with your first deposit (New customers)
  • Bonus available on your second and third deposit
  • KikoBet offers exclusive bonuses for CasinoBonusCenter visitors
  • Portuguese players are accepted
  • Accepts Bitcoin and other cryptocurrencies
  • Play instantly in your browser – No installation required
  • Mobile-friendly games · Enjoy playing on smartphones and tablets
  • Live Casino · Play against real croupiers at KikoBet
  • Online sports betting
  • Available in multiple languages, including English
  • Tested and certified by Casino Bonus Center · Rating: 4.1/5
  • Popularity: This offer has been claimed by 247 visitors so far this month.
  • 26 Game Providers: Pragmatic Play, Spribe, Vibra Gaming, Salsa Technology, Evolution Gaming, iSoftBet, Yggdrasil Gaming, Casino Technology, Playtech, Gamzix, Play n GO, Foxium, and others.

ReloadBet

Free Bonus for Portuguese Players and €1,000 as Welcome Bonus!

Free Bonus:

€5

No deposit required

Terms & Conditions apply ·  Play responsibly

ReloadBet

Free Bonus for Portuguese Players and €1,000 as Welcome Bonus!

  • €5 free! No deposit required
  • 100% Bonus up to €300 with your first deposit (New customers)
  • Bonus available on your second and third deposit
  • ReloadBet offers exclusive bonuses for CasinoBonusCenter visitors
  • Portuguese players are accepted
  • Exclusive Bonuses for Portuguese Players
  • Accepts Bitcoin and other cryptocurrencies
  • Play instantly in your browser – No installation required
  • Mobile-friendly games · Enjoy playing on smartphones and tablets
  • Live Casino · Play against real croupiers at ReloadBet
  • Online sports betting
  • Over €14,614,674 in Jackpots by Games Global
  • Available in multiple languages, including English
  • Tested and certified by Casino Bonus Center · Rating: 3.9/5
  • Popularity: This offer has been claimed by 240 visitors so far this month.
  • 32 Game Providers: Play n GO, 3 Oaks Gaming, iSoftBet, Salsa Technology, Yggdrasil Gaming, Evolution Gaming, Red Tiger, Spribe, BRAGG, Blueprint Gaming, Playtech, Vibra Gaming, and others.

LSbet

50 Free Spins for new players from Portugal plus a €300 Welcome Bonus!

Sign-up Bonus:

50

Free Spins

No deposit required

Terms & Conditions apply ·  Play responsibly

LSbet

50 Free Spins for new players from Portugal plus a €300 Welcome Bonus!

  • 50 Free Spins · No deposit required
  • Exclusive No-Deposit Bonus – Available in Portugal and Selected Countries
  • 100% Bonus up to €300 with your first deposit (New customers)
  • LSbet offers exclusive bonuses for CasinoBonusCenter visitors
  • Portuguese players are accepted
  • Accepts Bitcoin and other cryptocurrencies
  • Play instantly in your browser – No installation required
  • Mobile-friendly games · Enjoy playing on smartphones and tablets
  • Live Casino · Play against real croupiers at LSbet
  • Online sports betting
  • Available in multiple languages, including English
  • Tested and certified by Casino Bonus Center · Rating: 4.1/5
  • Popularity: This offer has been claimed by 237 visitors so far this month.
  • 15 Game Providers: NetEnt, Games Global, iSoftBet, Tom Horn, Ortiz, Pragmatic Play, Genii, Blueprint Gaming, Play n GO, BetSoft, VIVO Gaming, Zitro, Salsa Technology, OnAir Entertainment, and Evolution Gaming

Rollino

Enter the Fairground with an Exclusive Bonus up to €6,000!

Sign-up Bonus:

20

Free Spins

No deposit required

Terms & Conditions apply ·  Play responsibly

Rollino

Enter the Fairground with an Exclusive Bonus up to €6,000!

  • 20 Free Spins · No deposit required
  • Exclusive No-deposit Bonus – Available in Portugal and Selected Countries
  • 200% Bonus up to €3,000 + 100 Free Spins with your first deposit (New customers)
  • Bonus available on your second and third deposit
  • Rollino offers exclusive bonuses for CasinoBonusCenter visitors
  • Portuguese players are accepted
  • Play instantly in your browser – No installation required
  • Mobile-friendly games · Enjoy playing on smartphones and tablets
  • Live Casino · Play against real croupiers at Rollino
  • Online sports betting
  • Available in multiple languages, including English
  • Tested and certified by Casino Bonus Center · Rating: 4.1/5
  • Popularity: This offer has been claimed by 220 visitors so far this month.
  • 85 Game Providers: 1X2gaming, Platipus, Red Rake, Spinmatic, VIVO Gaming, High 5, Amatic, Pragmatic Play, Playbro, ThunderSpin, Barbara Bang, Thunderkick, and others.

888Casino

Ganhe até 1.000€ no bónus de boas-vindas

Welcome offer:

100% Bonus up to

€1,000

Bonus on first deposit

Terms & Conditions apply ·  Play responsibly

888Casino

Ganhe até 1.000€ no bónus de boas-vindas

  • 100% Bonus up to €1,000 with your first deposit (New customers)
  • Bonus available on your second and third deposit
  • Portuguese players are accepted
  • Play instantly in your browser – No installation required · Optional game downloads available
  • Mobile-friendly games · Enjoy playing on smartphones and tablets
  • Live Casino · Play against real croupiers at 888Casino
  • Online sports betting
  • Play poker online at 888Casino – Online poker room
  • Available in multiple languages, including English
  • Tested and certified by Casino Bonus Center · Rating: 4.9/5
  • Popularity: This offer has been claimed by 209 visitors so far this month.
  • 27 Game Providers: Playtech, Section8, NetEnt, Williams Interactive, Big Time Gaming, Play n GO, Wizard Games, Electracade, GTECH G2, Amaya Cryptologic, GTS, Pragmatic Play, and others.

Wolfy Casino

Enjoy up to €1,000 in Wager-Free Bonuses at Signup!

Sign-up Bonus:

20

Free Spins

No deposit required

Terms & Conditions apply ·  Play responsibly

Wolfy Casino

Enjoy up to €1,000 in Wager-Free Bonuses at Signup!

  • 20 Free Spins · No deposit required
  • Bonus Code: CENTER20
  • 100% Bonus up to €200 with your first deposit (New customers)
  • Bonus Code: WELCOME
  • Bonus available on your second and third deposit
  • Wolfy Casino offers exclusive bonuses for CasinoBonusCenter visitors
  • Portuguese players are accepted
  • Accepts Bitcoin and other cryptocurrencies
  • Play instantly in your browser – No installation required
  • Mobile-friendly games · Enjoy playing on smartphones and tablets
  • Live Casino · Play against real croupiers at Wolfy Casino
  • Available in multiple languages, including English
  • Rating: 3.8/5
  • Popularity: This offer has been claimed by 161 visitors so far this month.
  • 108 Game Providers: Play n GO, Gamomat, Atomic Slot Lab, Galaxsys, Nemesis, iSoftBet, Casimi, Blueprint Gaming, Amigo, BGaming, Thunderkick, Oryx Gaming, and others.

Top 10 Online Casino Bonuses in Portugal (September 2025)

Expert-Rated Real Money Casinos with Top Bonuses

Looking for the best online casinos in Portugal? Our expert team has tested and reviewed hundreds of real money gambling sites to bring you the top 10 choices for September 2025. 888Casino, GambleZen Casino, and KikoBet lead our rankings, standing out for their extensive selection of high-paying slots, immersive live dealer tables, exclusive bonuses, and lightning-fast payouts.

Most Popular Online Casinos in Portugal

Curious which brands stand out among Portuguese players right now? Here are the top 3 most popular online casinos in the last 30 days—each trusted for their excellent bonuses, diverse games, and reliable payouts:

  1. GambleZen Casino – Ranked as the #1 most popular online casino among Portuguese players this month. Check why GambleZen Casino is so popular in Portugal
  2. LSbet – Holds the second spot in popularity with Portuguese players for September 2025. See Current Bonuses at LSbet
  3. EmuCasino – Currently ranked #3 among Portugal’s most played online casinos. View Available Promotions at EmuCasino

Browse our expert-ranked list below and claim your exclusive welcome bonuses today!

Online Casinos PortugalWelcome Bonus

Ganhe até 1.000€ no bónus de boas-vindas

Bonus of 100% up to €1,000

€3,625 in Bonuses + 350 Free Spins

Bonus of 200% up to €500 + 100 Free Spins

20 Free Spins for New Players!

Bonus of 100% up to €200

Exclusive free bonuses for Portuguese players!

Bonus of 100% up to €500

Unleash the Joker's fun!

Bonus of 225% up to €1,000 + 200 Free Spins

€5 totally free plus €1,000 bonus

Bonus of 100% up to €300

20 Free Spins for Portuguese Players!

Bonus of 100% up to €100

Get ready for a wild ride!

Bonus of 100% up to $5,000

Boosted odds, enhanced winnings!

Bonus of 100% up to €500 + 200 Free Spins

50 Free Spins for New Players!

Bonus of 100% up to €300

* Terms & Conditions Apply ·  Play responsibly

With nearly two decades of experience in the industry, CasinoBonusCenter.com has been analyzing and comparing online casinos since 2006. Our dedicated team of professionals has handpicked the most trusted casinos for Portuguese players to ensure you get the biggest sign-up bonuses, top-tier games, and the most rewarding loyalty programs.