Teemo's mushrooms can be used to farm creep waves very effectively.
Place your mushrooms at key locations on the map, such as by the Dragon or Baron Nashor, to reveal when your enemies might be attempting to kill them.
Janna's at her strongest when buffing another ally. If you can harass her ally, it will weaken her ability to fight you.
Save an interrupt ability for when Janna uses her ultimate.
Listen for the charge up sound on Howling Gale in case Janna is trying to hit you with it from off screen or from brush.
The stat comparisons provided here clarify some important Teemo vs. Janna matchup stats that may help us interpret the distinctions between the two. As an example, Teemo’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Janna’s ratio of NaN, demonstrating that Teemo may be more central to his team's team fighting capacity than Janna. This observation is in large part caused by the difference in kills.
Teemo normally has a much larger longest kill spree than his foe does. Commonly, he receives a similar amount of damage to Janna. This is usually reflective of differing health capacities, yet it can also hint that the champ with more HP has less agility and thus is unable to escape further harm when poked or engaged.
Both LoL champions are great. Both have their strengths, weaknesses, and counters. In League's current meta, Teemo usually wins when facing off against Janna, with a 51.6% win rate. Thus, Teemo makes a good counter to Janna.
While Teemo does have a higher winrate than Janna, when facing one another, Teemo also has a lower level of difficulty that makes him a less difficult champion to develop with. You still need to be cautious when picking Teemo into Janna.
Additionally, Teemo has some amount of utility and CC, a similar amount to Janna. This often makes her just as valuable during teamfights, especially when facing champions with a lot of burst damage.
While there isn't one best champion for every situation in League of Legends, in Teemo vs Janna matchups, Teemo 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.
Teemo is a decent counter to Janna. Focus your play on maximizing your gold and cs and taking out objectives. If you can do that, you should hold your own as Teemo against Janna.
If you would like to learn all of the intricacies of Teemo to counter Janna during both the lane and mid / late game phases of League of Legends, you should keep reading to gather a few extra tips and tricks for this matchup. If you mind the build and suggestions shown above, you should increase your win rate significantly and be closer to League of Legends pro players.
Teemo on average picks up much more CS compared to Janna. Champs who typically don't get many minion kills typically don't have to have much CS to be valuable teammates, such as supports. These kinds of champions are capable of scaling well off of their skills, stats, and first items alone. Yet, champs with a lot of CS, such as hyper-carries, often have to have a lot of items to be effective. In either situation, try to surpass the values reported on this page to do well.
The ideal items to have in your Teemo versus Janna build include Rabadon's Deathcap, Nashor's Tooth, and Malignance. When Teemo combined at least these three items in his build, he performed much better countering Janna than with most other common item sets. In fact, Teemo had an average win rate of 51.6% when playing against Janna with this build.
To have the highest chance of coming out on top against Janna as Teemo, you should take the Dark Harvest, Cheap Shot, Eyeball Collection, Ultimate Hunter, Gathering Storm, and Transcendence runes from the Domination and Sorcery rune sets. Out of all the rune sets players picked for Teemo vs Janna counters, this sequence of runes yielded the greatest win rate. Notably, these runes averaged a 51.6% win rate overall.
By default, tips, stats, and builds on how to beat Janna as Teemo are shown for all skill levels combined. If you would like to scope the stats and builds to a distinct player tier, you may use the selection menu located above.