Latest Casino Bonuses for September 2025
Special First Deposit Bonus for Players from Ireland · Terms & Conditions apply · #Ad · Gambling can be addictive. Play responsibly · GambleAware.org
Karamba
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September 14
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.9/5
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Exclusive Welcome Bonus for Irish players making their first deposit · Terms & Conditions apply · #Ad · Gambling can be addictive. Play responsibly · GambleAware.org
Hopa
Get 50 Free Spins plus a €500 Bonus to start your Journey!
September 13
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- ✓ Online sports betting
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- ✓ Tested and certified by Casino Bonus Center · Rating: 3.9/5
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Significant Terms: 18+ · First deposit only · Min. deposit €10 · 50 Free Spins on Big Bass Bonanza slot · Each free spin valued at €0.10 · Irregular play may lead to removal of rewards · OJO’s Rewards and Game Play policy applies · Terms & Conditions apply · #Ad · Gambling can be addictive. Play responsibly · GambleAware.org
PlayOJO
Unlock 50 Free Spins Today – All Paid in Cash with No Wagering Requirements
September 12
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- ✓ Tested and certified by Casino Bonus Center · Rating: 4.1/5
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Terms & Conditions apply · #Ad · Gambling can be addictive. Play responsibly · GambleAware.org
AmunRa
Step Into Egypt’s Riches with Custom Welcome Bonuses, Free Spins, and Sports Offers
September 11
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- ✓ Rating: 3.9/5
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Terms & Conditions apply · #Ad · Gambling can be addictive. Play responsibly · GambleAware.org
Posido
Explore Thousands of Games, Claim Your Treasure Chest Bonus, and Bet on Sports
September 11
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- ✓ Rating: 3.8/5
- ✓ 89 Game Providers: Spribe, Oryx Gaming, Amigo, Pragmatic Play, Playson, Blueprint Gaming, Leander Games, QuickSpin, Penguin King, EGT Digital, Felix Gaming, VoltEnt, and others.
Significant terms: 18+. 30 Free spins (Spins value: €0.20) on Gates of EnergyCasino slot machine available once, to new customers who register at EnergyCasino using the promotional link. Maximum winnings €100. Spins expire after 7 days. · Terms & Conditions apply · #Ad · Gambling can be addictive. Play responsibly · GambleAware.org
EnergyCasino
Energize your game with 30 Free Spins and a Triple-Powered Welcome Bonus
September 8
- ✓ 30 Free Spins · No deposit required
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Terms & Conditions apply · #Ad · Gambling can be addictive. Play responsibly · GambleAware.org
Whamoo
Fun, Good Vibes, and Made-to-Measure Welcome Bonus Combo
September 6
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- ✓ Rating: 3.6/5
- ✓ 51 Game Providers: NetGame, Playtech, Skywind, Revolver Gaming, Playson, Yggdrasil Gaming, Gamomat, Golden Hero, Booming Games, Reevo, Kalamba Games, Atomic Slot Lab, and others.
Top 10 Online Casino Bonuses in Ireland (September 2025)
Expert-Rated Real Money Casinos with Top Bonuses
Looking for the best online casinos in Ireland? Our expert team has tested and reviewed hundreds of real money gambling sites to bring you the top 10 choices for September 2025. LeoVegas, Zodiac Casino, and EnergyCasino lead our rankings, standing out for their extensive selection of high-paying slots, immersive live dealer tables, exclusive bonuses, and lightning-fast payouts.
Browse our expert-ranked list below and claim your exclusive welcome bonuses today!
| Online Casinos Ireland | Welcome Bonus |
|---|---|
LeoVegas Up to €1,000 + 200 free spins! | Bonus of 100% up to €1,000 + 200 Free Spins |
Zodiac Casino 80 chances to be a millionaire for €1 | 80 Free Spins |
EnergyCasino Triple-Powered Welcome Bonus | Bonus of 100% up to €200 + 400 Free Spins |
NordicBet Sportsbook · Casino · Awesome bonuses | Bonus of 100% up to €500 + 100 Free Spins |
Playfina Bonus up to €3,500 + 1,000 Free Spins | Bonus of 100% up to €500 + 200 Free Spins |
GambleZen Casino €3,625 in Bonuses + 350 Free Spins | Bonus of 200% up to €500 + 100 Free Spins |
iWildCasino Unleash the Joker's fun! | Bonus of 225% up to €1,000 + 200 Free Spins |
888Casino Get a 200% Bonus up to £200 | Bonus of 200% up to £200 |
NetBet €200 bonus + 10 free spins on Vegas | Bonus of 100% up to €200 + 10 Free Spins |
Betsson Sportsbook, casino, live casino | Bonus of 100% up to €100 + 50 Free Spins |
* Terms & Conditions Apply · #Ad · Gambling can be addictive. Play responsibly · GambleAware.org
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 Irish players to ensure you get the biggest sign-up bonuses, top-tier games, and the most rewarding loyalty programs.
