Despair is very effective against other tanks, so make sure you're in range of opponents with the highest Health.
Amumu is highly dependent on teammates, so try laning with your friends for maximum effectiveness.
Cooldown Reduction on Amumu is very strong, but it's often difficult to itemize for it. Grab the Golem buff whenever possible to gain Cooldown Reduction without sacrificing stats.
Stay behind minions to make Charm difficult to land, this will reduce Ahri's damage potential significantly.
Ahri's survivability is dramatically reduced when her Ultimate, Spirit Rush, is down.
The stats shown on this page clarify some vital Amumu against Ahri counter statistics that may help you appreciate the differences between this set of champs. As an example, Amumu’s KDA ratio ([kills + assists] / deaths) of NaN is better than Ahri’s KDA ratio of NaN, highlighting that Amumu may be more central to his team's team fighting effectiveness than Ahri..
Amumu typically has a slightly smaller longest killing spree than his opponent does. Typically, he receives more damage than Ahri. This is usually reflective of different amounts of tankyness; however, it can also indicate that the one champion has less agility and thus is not able to flee from further damage when engaged or poked.
Both League champions are great champions. Both have their pros and cons. In the game's current meta, Amumu usually wins when trying to fight Ahri, with a 51.2% win rate. Therefore, Amumu makes a good counter to Ahri.
While Amumu does have a higher winrate compared to Ahri, when they face off with one another, Amumu also has a lower learning curve that makes him a less complex champ to develop with. You still need to be cautious when picking Amumu into Ahri.
Additionally, Amumu also has a very large amount of CC and other utility, a similar amount to Ahri. This makes her just as valuable during teamfights, especially when fighting champions with a ton of burst damage.
While there isn't a single best champion overall in League of Legends, in Amumu vs Ahri matchups, Amumu is the better champ with a higher win rate, less champion complexity, and a similar amount of utility to help out your team members during late stage team fights.
Amumu is a decent counter to Ahri. You will do well by focussing your play on increasing your gold and cs and clearing objectives. If you do that, you should do very well as Amumu against Ahri.
If you would like to truly master Amumu in order to counter Ahri during both the laning and mid / late game phases of League of Legends, you should continue reading to pick up a few extra lessons on this matchup. If you listen to the build and suggestions displayed above, you should increase your win rate by a lot and be that much closer to League of Legends pro players.
Amumu often picks up a lot less CS compared to Ahri. Champions who on average don't earn many minion kills often don't require much CS to be valuable teammates, such as support champions. These kinds of champions are capable of scaling well off of their abilities and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, usually need several high cost items to be effective. In either situation, try to do better than the values displayed on this page to do well.
The best items to have in your Amumu versus Ahri build consist of Sunfire Aegis, Thornmail, and Randuin's Omen. When Amumu used at least these three pieces in his build, he did a lot better when fighting Ahri than with many other common builds. In fact, Amumu boasted an average win rate of 51.2% when countering Ahri with this counter build.
To have the greatest likelihood of vanquishing Ahri as Amumu, Amumu players should use the Conqueror, Triumph, Legend: Tenacity, Last Stand, Cheap Shot, and Ultimate Hunter runes from the Precision and Domination rune sets. Of all the rune builds players chose for Amumu vs Ahri counters, this set of runes resulted in the best win rate. In fact, these runes averaged a 51.2% win rate overall.
By default, tips, statistics, and builds on how to beat Ahri as Amumu are presented for all skill levels, merged. If you want to narrow the statistics and builds to an individual rank, you should use the selection menu at the top of this page.