Puerto Vallarta starts the week with renewed flood risk only two days after water entered homes in Las Mojoneras. The drinking-water network is still regaining pressure after disruption tied to the new highway works, and a lane reduction remains on Avenida México. Through midweek, the concern is heavy rain falling while drainage and water-service problems remain unresolved.
Heavy rain returns before the city fully dries out
The National Meteorological Service forecast calls for very heavy rain — 50 to 75 millimeters — in parts of Jalisco and southern Nayarit on Monday as Tropical Wave 30 crosses western Mexico. Thunderstorms may bring strong gusts, localized flooding, rising streams, landslides and poor visibility. The 96-hour outlook keeps the regional rain risk elevated: another 50 to 75 millimeters is possible in western Jalisco on Wednesday, followed by 25 to 50 millimeters on Thursday.
Forecast confidence drops beyond Thursday, but model guidance keeps thunderstorms possible into the weekend. Highs should remain around 32–33°C through most of the week.
Tropical Storm Iselle will be visible on hurricane maps, but it is not driving Vallarta’s rain. Current National Hurricane Center guidance keeps Iselle well offshore and moving away from Mexico, with no direct threat to Puerto Vallarta on the present track. The local threat comes from the tropical wave and unstable air.
SMN forecasts one-to-two-meter waves along the Jalisco and Nayarit coast Monday through Wednesday. SEMAR’s port-status page showed no verified Puerto Vallarta closure Sunday evening, but beach flags can change quickly. Follow lifeguard flags, avoid river mouths after heavy rain and never drive into water covering a road or underpass.
Water recovery and an Avenida México squeeze
SEAPAL said Friday that service had returned to most neighborhoods affected by the highway concessionaire’s delayed work, but intermittent supply, pressure changes and temporary outages could continue while tanks refill. Middle and upper elevations remain most vulnerable. Refill household storage when water is available without overloading the recovering system. SEAPAL’s water-truck and tinaco line remains active on WhatsApp at 322 105 8226.
The works continue to reduce lanes on Avenida México between Tamaulipas and Avenida Universidad de Guadalajara, beneath the highway bridge toward Ixtapa. A diversion remains while crews finish connections to the Tanque San Francisco system. Allow extra time through Las Juntas, Las Mojoneras and the Ixtapa approach, particularly in rain.
No planned local CFE interruption was verified by Sunday evening. Storm failures remain possible; report them to CFE at 071 or through CFE Contigo. GAP had posted no airport advisory, but passengers flying during heavier rain should check directly with their airline.
Crowds will be concentrated, not citywide
This is the final full week of summer vacation for basic-education students. The 2026–27 SEP calendar starts classes Monday, August 31; teachers return for technical-council work August 24–28. Expect a quiet low-season week, then heavier outbound highway, bus-station and airport movement Sunday as families head home.
Three events will create smaller pockets of activity. Aranza performs a ticketed Noche Bohemia at Santo Coyote in Marina Vallarta at 7 p.m. Tuesday. The larger public draw is a free mariachi concert at Los Arcos del Malecón at 7 p.m. Thursday, part of the International Mariachi and Charrería Encounter. Expect tighter parking around Plaza de Armas, the Malecón and adjoining Centro streets from late afternoon; a taxi or drop-off outside the immediate event zone may be easier.
The ASIPONA cruise calendar lists one ship: Crystal Symphony at Pier 1 from 11 a.m. to 7 p.m. Friday. The modest call should add tour, taxi and restaurant activity from the Marina through Centro without a citywide surge. On Sunday, the IBX: Americas convention begins at the Meliá Puerto Vallarta, bringing meetings-industry visitors through the airport and Marina hotels through September 2.
City Hall’s public calendar
The municipality’s published commission schedule lists two public meetings Tuesday at City Hall: Care for Vulnerable Groups and Affirmative Action at 10 a.m., followed by Social Participation and Community Organization at 11:30 a.m. The Healthy Environment, Climate Action and Animal Protection Commission is scheduled for 12:30 p.m. Friday. No full City Council session was listed for August 24–30 as of Sunday evening.
The more consequential public announcement this week may come outside those agendas: a timetable for correcting the drainage failure in Las Mojoneras and a clear indication of when SEAPAL expects the water system to be fully stable.
Mojoneras is the test this week
Early Saturday, flooding affected 22 homes in Las Mojoneras. Municipal Civil Protection attributed the backup to logs and debris obstructing a storm drain; residents later partially blocked Avenida México to demand a durable solution. No injuries were reported, but some homes took on substantial water.
Clearing the obstruction addressed the immediate emergency. It did not settle whether the crossing and drainage capacity can handle another intense storm. With more heavy rain possible, PVDN will be watching for a specific scope of work, responsible agency and completion date — and for whether runoff again reaches homes or forces another protest on Avenida México. That is the week’s clearest measure of whether authorities are getting ahead of the rainy-season risk or returning to the same block after every downpour.
