Best Weapons for Dahlia in Genshin Impact
Dahlia is a 4-star Hydro Sword support character in Genshin Impact who excels at boosting team performance. This guide ranks her best weapon choices, focusing on Energy Recharge and HP scaling for optimal support.

Top 5 Weapons for Dahlia
1. Key of Khaj-Nisut (Best in Slot)
Type: 5-Star Sword
Base ATK: 542
Substat: 66.2% HP
Effect:
+20% HP bonus
Grants team-wide Elemental Mastery based on Dahlia's Max HP
Why Use?
Maximizes Dahlia's HP scaling for stronger shields/buffs
Provides team utility through EM sharing
2. Sacrificial Sword (Best 4-Star Option)
Type: 4-Star Sword
Base ATK: 454
Substat: 61.3% Energy Recharge
Effect (R5):
80% chance to reset Elemental Skill cooldown
Why Use?
Improves Energy generation for frequent bursts
Great for support-focused builds
3. Favonius Sword (Energy Recharge Focus)
Type: 4-Star Sword
Base ATK: 454
Substat: 61.3% Energy Recharge
Effect (R5):
CRIT hits generate Energy particles (6 Energy per proc)
Why Use?
Best for team energy regeneration
Low investment, high utility
4. The Dockhand's Assistant (HP Scaling Option)
Type: 4-Star Sword
Base ATK: 510
Substat: 41.3% HP
Effect (R5):
Healing grants EM and Energy restoration
Why Use?
Good HP boost for shield strength
Niche synergy with healer teams
5. Skyward Blade (F2P-Friendly 5-Star)
Type: 5-Star Sword
Base ATK: 608
Substat: 55.1% Energy Recharge
Effect:
Boosts CRIT Rate and ATK speed
Why Use?
High base ATK and ER substat
Less optimal than HP-focused options
Weapon Selection Guide

Why HP and Energy Recharge Matter for Dahlia
HP Scaling: Improves shield strength and ascension passives
Energy Recharge: Ensures consistent Elemental Burst uptime
Support Focus: Dahlia's value comes from utility, not personal damage
Final Recommendations
Best Overall: Key of Khaj-Nisut (if available)
Best 4-Star: Sacrificial Sword or Favonius Sword
F2P Option: Fleuve Cendre Ferryman (Fontaine craftable)
For maximum support effectiveness, prioritize HP% and Energy Recharge stats on Dahlia's weapons.