--- title: "Clash of Clans: When Is the Next Hammer Jam and How to Prepare" description: "Clash of Clans Hammer Jam: the event that cuts build and upgrade times in half — when it happens, how to stock resources, plan upgrades and coordinate with your clan. 4 min read." url: https://after-strategy.com/en/clash-of-clans-hammer-jam-september-2025-guide/ lang: en published: 2025-09-06 author: "Simon Dougnac" author_url: https://after-strategy.com/en/auteur/simon/ game: "Clash of Clans" game_url: https://after-strategy.com/en/jeux/clash-of-clans/ categories: [mobile] translations: fr: https://after-strategy.com/fr/preparez-vous-au-hammer-jam-dans-clash-of-clans/ es: https://after-strategy.com/es/clash-of-clans-hammer-jam-septiembre-2025-guia/ publisher: "After Strategy" --- # Clash of Clans: When Is the Next Hammer Jam and How to Prepare > Clash of Clans Hammer Jam: the event that cuts build and upgrade times in half — when it happens, how to stock resources, plan upgrades and coordinate with your clan. 4 min read. ## [Clash of Clans](https://after-strategy.com/en/jeux/clash-of-clans/): When Is the Next Hammer Jam and How to Prepare _Estimated reading time: 4 minutes_ ![Clash of Clans — official screenshot showing a fantastic naval battle with ships and sea monsters](https://after-strategy.com/images/articles/preparez-vous-au-hammer-jam-dans-clash-of-clans/screenshot-1.webp) - Hammer Jam reduces construction and upgrade time. - Stocking up on resources is essential to make the most of the event. - Coordinating with your clan can maximize the benefits. ### Table of contents - [What Is Hammer Jam?](#hammer-jam) - [When Is the Next Hammer Jam?](#next-hammer-jam) - [How to Prepare for Hammer Jam?](#preparation) - [What Impact Does Hammer Jam Have on the Game?](#impact) - [Conclusion](#conclusion) ### What Is Hammer Jam? For those not yet familiar with the concept, **Hammer Jam** is an event in _Clash of Clans_ that reduces the construction and upgrade time of everything in the game. Just imagine: your buildings, your troops, your defenses — all of it can be upgraded in record time! It's the perfect opportunity to grow your village and prepare for even more epic battles. ### When Is the Next Hammer Jam? On this point, it's hard to give a precise date without official announcements from Supercell. However, based on past events, Hammer Jam generally happens several times a year, often during holiday periods or celebrations. Players are on tenterhooks, hoping for an announcement on the official forums or social media. Stay tuned to **Clash of Clans'** social media for news from Supercell! ### How to Prepare for Hammer Jam? Now let's get to the most exciting part: preparation! Here are a few tips to maximize your efficiency during Hammer Jam. #### 1\. Stock Up on Resources The first step to being ready is to make sure you have a good amount of resources. Whether gold, elixir or dark elixir, make sure you have a solid stock. Don't hesitate to raid players to fill your resources. The more buildings or troops you can upgrade during Hammer Jam, the better! #### 2\. Plan Your Upgrades Even before the event starts, take the time to plan which upgrades you want to make. Make a priority list, starting with essential buildings like army camps, defenses, and even a hero upgrade if you can. This will save you time during the event. #### 3\. Optimize Your Village Before Hammer Jam, use the time to reorganize your village. With less time to build, it makes sense to make sure everything is in place. Think about the layout of your defenses, how to protect your resources, and how to protect your King and Queen's buildings. #### 4\. Coordinate with Your Clanmates If you're in a clan, it's worth discussing with your clanmates before the event starts. Everyone can contribute to maximizing the benefits. For example, some can focus on upgrading troops, while others focus on defense. The synergy within your clan can make all the difference! #### 5\. Use Potions and Boosts Take advantage of Hammer Jam to use your upgrade potions and boosts. If you have potions in stock, now's the time to use them. They can reduce upgrade time even further, letting you maximize your progress. #### 6\. Stay Connected This is not the time to lose touch! Make sure to log into the game regularly during Hammer Jam. This lets you start new upgrades as soon as you finish a task, increasing the efficiency of your playtime. ### What Impact Does Hammer Jam Have on the Game? Hammer Jam is a key moment for all players. It not only lets you catch up with other players, but also brings real change to the game's dynamics. Players end up with upgraded villages that can then compete with others, letting everyone get well-deserved revenge on their dear opponents. ### Conclusion In summary, Hammer Jam is an event not to be missed in _Clash of Clans_. Prepare by stocking up on resources, planning your upgrades, and involving your clan. Be strategic and stay connected to maximize the impact of this event on your village. And don't forget: watch Supercell's announcements to find out the date of this eagerly awaited event. Happy gaming, everyone! ### FAQ **1\. When does Hammer Jam start?** The Hammer Jam date varies; it's recommended to follow Supercell's official announcements on their social media. **2\. Can you take part in Hammer Jam without being in a clan?** Yes, Hammer Jam is open to all players, but coordinating with a clan can bring more advantages. **3\. Which resources are the most important to stock up on?** Gold, elixir and dark elixir are crucial for upgrading buildings and troops. ## See also - [Clash of Clans — Barbarian's Odyssey: how to maximize the July 2026 Summer Jam](https://after-strategy.com/en/clash-of-clans-barbarians-odyssey-summer-jam-july-2026/) - [Clash of Clans: the Barbarian King arrives from TH4 with the May 2026 update](https://after-strategy.com/en/clash-of-clans-may-2026-update-barbarian-king-th4/) - [Clash of Clans: Hero Journey, Ruin Witch and Angry Spell — everything about the June 2026 update](https://after-strategy.com/en/clash-of-clans-june-2026-update-hero-journey/) - [All mobile games](https://after-strategy.com/en/categorie/mobile/) ## Sources - [Official Clash of Clans page on Google Play](https://play.google.com/store/apps/details?id=com.supercell.clashofclans) - [Official Clash of Clans website](https://supercell.com/en/games/clashofclans/) ## Sources - - - Source : [Clash of Clans: When Is the Next Hammer Jam and How to Prepare](https://after-strategy.com/en/clash-of-clans-hammer-jam-september-2025-guide/) — After Strategy