Jax benefits greatly from items that have both Ability Power and Attack Damage such as Guinsoo's Rageblade and Hextech Gunblade.
Jax can Leap Strike to friendly units, including wards. You can use them to plan your escape.
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 critical Jax against Kennen matchup statistics that can help us explain the differences between the pair. Jax’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Kennen’s ratio of NaN, showing that Jax may be more central to his team's team fighting effectiveness than Kennen..
Jax usually has a similar longest kill spree as his opponent does. Commonly, he takes more damage than Kennen. This often reflects differing health capacities, yet it can also hint that the champ with more HP has less agility and thus is unable to kite away from further damage when engaged or poked.
Both League of Legends champs are great. Both champs have their strengths, weaknesses, and counters. In the game's current meta, Jax usually wins when playing against Kennen, with a 52.1% win rate. As a result, Jax makes a good counter to Kennen.
While Jax does have a higher winrate compared to Kennen, when facing one another, Jax also has a greater difficulty level that makes him a more time consuming character to pick up and master. You should be be fine when picking Jax into Kennen.
Furthermore, Jax also has some 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 a single best champion overall in League of Legends, in Jax vs Kennen matchups, Jax is the better champion with a noticably higher win rate, more champion depth, and a similar amount of utility to help out your team members during team fights.
Jax is a good counter for Kennen. Make sure you focus your actions on increasing your CS and clearing objectives. If you do that, you should do very well as Jax against Kennen.
To truly master Jax in order 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 tricks and insights into this matchup. If you listen to the build and stats presented above, you should increase your win rate by a lot and be closer to League of Legends pro players.
Jax on average accumulates a similar amount of CS relative to Kennen. Champs who on average don't earn much CS usualy don't need much CS to be effective, such as supports. They are capable of scaling well off of their abilities and first items alone. Yet, champs with a lot of CS, such as hyper-carries, usually need several high cost items to be effective. In either situation, try to surpass the values displayed on this page to do well.
The most important items to prioritize in your Jax versus Kennen build consist of Sterak's Gage, Spear of Shojin, and Sundered Sky. When Jax incorporated at least these three pieces in his build, he performed much better against Kennen than with many other typical counter builds. In fact, Jax boasted an average win rate of 52.1% when playing against Kennen with this counter build.
To have the highest probability of annihilating Kennen as Jax, you should take the Lethal Tempo, Triumph, Legend: Alacrity, Last Stand, Magical Footwear, and Cosmic Insight runes from the Precision and Inspiration rune sets. Out of all the runes players chose for Jax vs Kennen matchups, this order of runes resulted in the best win rate. Moreover, these runes averaged a 52.1% win rate overall.
By default, tips, stats, and builds on how to beat Kennen as Jax are given for every ranked division. To scope the stats and builds to an individual rank, you should use the selection menu located above.