Each of Aphelios' weapons have different strengths, so try to find the right situation for your current weapons.
Consider playing a bit more cautiously around Kennen when you have a Mark of the Storm debuff. If he hits you with 3 Marks of the Storm, you will get stunned.
Kennen is flimsy by nature - turn and attack him if he gets careless with Lightning Rush.
The stat comparisons shown on this page clarify several important Aphelios against Kennen counter stats that may help us explain the differences and similarities between the two. For instance, Aphelios’s KDA ratio ([kills + assists] / deaths) of NaN is more than Kennen’s KDA ratio of NaN, indicating that Aphelios may be more central to his team's team fighting potential than Kennen..
Aphelios often has a similar longest killing spree as his matchup does. Commonly, he takes a similar amount of damage to Kennen. This often reflects differing health capacities, yet it can also illustrate that the champ with increased HP has less mobility and thus is not able to flee from further damage when engaged or poked.
Both League of Legends champions are great champions. Both champs have their strengths, weaknesses, and counters. In League's current meta, Aphelios usually loses when facing off against Kennen, with a 46.3% win rate. Thus, Aphelios makes a poor counter to Kennen.
While Aphelios does have a lower win rate than Kennen, when on opposite teams, Aphelios also has a much greater difficulty level that makes him a more complex champion to pick up and master. You may get destroyed when picking Aphelios into Kennenas his relative depth means you may not be able to unleash his full potential without a lot of practice beforehand.
Moreover, Aphelios has almost no amount of utility and CC, a similar amount to Kennen. This makes her just as valuable during team fights, especially when fighting champions with a lot of burst damage.
While there isn't one best champion for every situation in League of Legends, in Aphelios vs Kennen matchups, Kennen is the better champion with a much lower win rate, more champion depth, and a similar amount of utility to help out your allies during teamfights.
Aphelios is a terribly counter to Kennen. Focus your gameplay on increasing your gold income and taking out objectives. If you are able to do that, you should hold your own as Aphelios against Kennen.
If you would like to truly master Aphelios to counter Kennen during both the lane and mid / late game phases of League of Legends, you should continue reading to gather a few extra lessons on this matchup. If you pay attention to the build and stats displayed here, you should increase your win rate by a lot and be that much closer to League of Legends pro players.
Aphelios usually racks up a similar amount of CS relative to Kennen. Champs who typically don't earn much CS often don't require much CS to be effective, such as sup champs. These kinds of champions are able to scale well off of their skills, stats, and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, usually need many items to be effective. In either situation, try to exceed the values shown on this page to do well.
The most important items to use in your Aphelios versus Kennen build include Galeforce, Bloodthirster, and Kraken Slayer. When Aphelios used at least these three pieces in his build, he performed much better vs. Kennen than with most other typical item sets. In fact, Aphelios boasted an average winrate of 46.3% when countering Kennen with these items in his kit.
To have the highest likelihood of vanquishing Kennen as Aphelios, Aphelios players should take the Fleet Footwork, Overheal, Legend: Bloodline, Cut Down, Absolute Focus, and Gathering Storm runes from the Precision and Sorcery rune sets. Of all the rune sets players used for Aphelios vs Kennen fights, this blending of runes resulted in the highest win rate. Moreover, these runes provided a 46.3% winrate overall.
By default, tips, stats, and builds on how to beat Kennen as Aphelios are presented for every ranked division. If you want to narrow the stats and builds to a particular division, you should use the selection menu earlier in the counter matchup guide.