Las Vegas monsoon season (July–September) brings intense thunderstorms that cause flash flooding, roof damage, and water intrusion in residential properties. Standard homeowner's insurance covers storm-related roof damage and wind-driven water intrusion but does not cover flash flooding from outside sources, which requires separate flood insurance. Common monsoon damage includes roof and shingle damage, window and door water intrusion, drainage backup, and ceiling leaks. M&M Restoration Services ((702) 475-7575) provides 24/7 emergency monsoon damage response throughout the Las Vegas valley, with in-house public adjuster services for insurance claim management.
Las Vegas Monsoon Season Water Damage — What Homeowners Need to Know
June 1, 2025·7 min read·VegasRebuild Editorial
Quick Answer: Las Vegas monsoon season runs July–September, bringing intense storms that cause flash flooding, roof damage, and water intrusion. Standard homeowner's insurance covers storm-related roof damage but not outside flooding. M&M Restoration Services at (702) 475-7575 provides 24/7 emergency monsoon damage response.
Las Vegas experiences one of North America's most intense monsoon seasons, typically running from July through September. Despite the desert reputation, Las Vegas regularly sees intense thunderstorms that dump inches of rain in hours — far more than the hardened desert terrain and aging drainage systems can handle. For homeowners, monsoon season represents the highest annual risk of water damage.
Understanding Las Vegas Monsoon Season
The North American monsoon is a seasonal shift in wind patterns that brings moisture from the Gulf of California into the southwestern United States. For Las Vegas homeowners, this means:
- •Peak season: July–September, with most intense storms in July and August
- •Characteristics: short but extremely intense thunderstorms, often with flash flooding
- •Annual rainfall: Las Vegas averages 4–5 inches total, but 1–2 inches can fall in a single storm
- •Flash flooding: the desert terrain cannot absorb rapid rainfall — runoff concentrates quickly
- •Risk areas: low-lying streets, neighborhoods with poor drainage, homes near washes
Most Common Monsoon Damage to Las Vegas Homes
Las Vegas monsoon storms cause several distinct types of property damage:
- •Roof damage — high winds and hail damage shingles, flashing, and skylights
- •Window and door water intrusion — storms drive rain into improperly sealed openings
- •Flash flooding — external water entry into garages, basements, and lower levels
- •HVAC damage — outdoor units can be damaged by hail or debris
- •Pool area damage — debris and flooding around pool equipment
- •Drainage backup — overwhelmed municipal systems cause sewer backup
- •Interior ceiling leaks — damaged roof allows water to damage ceilings and walls
Pre-Monsoon Preparation Checklist
Complete this checklist before monsoon season begins (June):
- •✅ Inspect and clean gutters and downspouts
- •✅ Have your roof professionally inspected for damaged or missing shingles
- •✅ Check and reseal window and door weatherstripping
- •✅ Clear debris from drainage areas around your property
- •✅ Verify your sump pump is operational (if applicable)
- •✅ Install window well covers to prevent flooding
- •✅ Review your homeowner's insurance and add flood insurance if in a flood-prone area
- •✅ Save M&M Restoration's number: (702) 475-7575
Need Immediate Help? Call M&M Restoration
Las Vegas's #1 rated restoration company. In-house public adjuster. 60-minute response. 24/7 emergency.
GC License B0093581 · Public Adjuster License 4067945 · IICRC #70207886
What Is and Isn't Covered by Insurance
Monsoon damage coverage depends on the type of damage and source of water:
- •COVERED: Roof damage from wind or hail that causes interior water damage
- •COVERED: Window damage from storm-force wind that causes water intrusion
- •NOT COVERED: Flash flooding from outside the home (requires NFIP flood insurance)
- •NOT COVERED: Sewer backup from overwhelmed municipal systems (requires separate rider)
- •COVERED: Lightning strikes that cause fire or structural damage
- •M&M Restoration's in-house Public Adjuster can review your specific claim and policy
Frequently Asked Questions
Las Vegas monsoon season typically begins in mid-June to early July and runs through September. The most intense storms generally occur in July and August. Homeowners should complete preparation work by mid-June.