October is when Mexico starts to transition out of rainy season - skies clear progressively through the month, and the colonial cities begin preparations for Día de Muertos (1-2 November). It’s also one of the best months for Oaxaca and the highland cities, with the landscape still green from the rains but drier days becoming more frequent.
Marigold Markets and Pan de Muerto: Oaxaca and Pátzcuaro Prepare for November 1
Día de Muertos (Day of the Dead) falls on 1-2 November, but preparations begin in late October. Markets fill with marigolds (cempasúchil), the distinctive orange flower used to decorate altars and create paths that guide the dead home. Bakeries start selling pan de muerto (sweet anise bread topped with bone-shaped decorations). Families begin constructing home altars (ofrendas) with photos, favourite foods, candles, and personal items of deceased relatives. Our Day of the Dead guide explains the traditions, and Oaxaca City tours cover the cemetery vigils.
Best destinations for Día de Muertos: Oaxaca, Pátzcuaro, Mérida, Mexico City, and smaller indigenous communities around the central states. Book accommodation for 29 October-2 November far in advance - often 3-6 months ahead for Oaxaca and Pátzcuaro, where the celebrations are most renowned.
Night of 31 October: in many communities, the celebrations begin on the evening of 31 October (for deceased children, or “angelitos”) and continue through the night of 1 November (for deceased adults). The timing overlaps with Halloween but the traditions are entirely distinct.
Highlands Enter Early Dry Season While Caribbean Coast Lags Six Weeks Behind
| City | Avg High °C | Avg Low °C | Rainfall mm | Humidity | Crowd Level | Best For |
|---|---|---|---|---|---|---|
| Mexico City | 22 | 12 | ~45 | Moderate | Low | Día de Muertos prep; excellent value |
| Cancún | 30 | 22 | ~185 | Moderate–High | Low | Late storm risk early Oct; clears by month end |
| Oaxaca | 27 | 14 | ~50 | Moderate | Low | Best month to visit - green, dry-ish, festive |
| Puerto Vallarta | 31 | 21 | ~55 | Moderate | Low | Rains easing; great value Pacific beach time |
| Los Cabos | 31 | 20 | ~15 | Low–Moderate | Low | Drying out; ideal for diving and whale sharks |
| Guadalajara | 27 | 13 | ~45 | Moderate | Very Low | Transitioning to dry season; very affordable |
| San Miguel de Allende | 27 | 13 | ~45 | Moderate | Low | Perfect for pre-Día de Muertos visit |
| Tulum | 30 | 22 | ~185 | High | Low | Late Caribbean rain season; easing late October |
Regional variation note: October shows a sharp divergence between the coasts. Cancún (sea level, Caribbean) still receives approximately 185 mm - influenced by late-season tropical systems - and Tulum sees similar figures. Mexico City (2,240 m) drops to around 45 mm as the highland dry season begins. Oaxaca (1,550 m) sees around 50 mm with drier conditions arriving from mid-month. Guadalajara (1,560 m) and San Miguel de Allende (1,900 m) both mirror Mexico City at approximately 45 mm. Puerto Vallarta drops sharply to around 55 mm - down from 340 mm in September - as the Pacific rainy season winds down. Los Cabos is the clearest destination at only approximately 15 mm, making October one of the best months to visit Baja. By late October, highland cities and the Baja peninsula are effectively in early dry season; the Caribbean coast lags by 4–6 weeks.
October sees the tail end of hurricane season (the risk reduces significantly after mid-October) and the beginning of dry conditions across much of Mexico.
Caribbean coast: still some rain and storm risk early in the month; conditions improve markedly by late October. By 31 October, the Riviera Maya is typically entering early dry season. Sargassum seaweed begins to recede.
Mexico City: October is one of the most pleasant months - the rainy afternoons become less frequent, temperatures are comfortable (20-24°C), and the parks retain their green from the wet season.
Oaxaca: the rains ease through October. By late October the valley is entering its best period - warm days, cool nights, clear skies, and the ofrendas appearing in shops and homes add atmosphere.
Pacific coast: rain is decreasing. Puerto Vallarta and Sayulita start seeing more consistent sun. Los Cabos is largely unaffected by mainland rain patterns.
Festival Cervantino in Guanajuato and the Mérida Maya Culture Festival
Festival Internacional Cervantino (Guanajuato): usually October, one of Latin America’s largest arts festivals. Theatre, music, opera, and dance performances take place in the city’s plazas, alleyways, and historic theatres. The city fills with performers and audiences from across the Spanish-speaking world. Book accommodation months in advance. Add Guanajuato tours for the old silver-mining town.
Festival Internacional de la Cultura Maya (Mérida): October or November, celebrating Yucatecan and Maya culture with music, food, and arts events. A good reason to visit Mérida when the heat has finally broken.
Monarch Butterflies Arrive in Michoacán and Whale Sharks Depart Holbox
The whale shark season in Holbox typically ends in September-early October. On the Pacific coast, whale sharks become visible off La Paz (Baja California Sur) from late October through February - a different population that feeds in the Sea of Cortez.
Monarch butterflies begin arriving at their wintering sanctuaries in Michoacán (El Rosario, Sierra Chincua) in late October and early November. The first arrivals appear around the Day of the Dead - in local tradition, the butterflies are believed to carry the souls of the departed. The full spectacle builds through November and December. Our monarch butterfly migration guide covers sanctuary access.
Cenote Clarity Returning: Dos Ojos and Gran Cenote Approaching Dry-Season Best
Cenote water levels remain high from the rainy season, and clarity begins improving as the rains taper off. Late October offers a good balance: warm water, fewer crowds than the dry season peak, and visibility that improves week by week.
Excellent Value Across the Country Outside the Día de Muertos Weekend
October offers excellent value. Caribbean coast prices are still at low-season rates (except the Día de Muertos weekend in Mérida and other celebration hotspots). Colonial cities are moderately priced outside of the 29 October-2 November window and the Cervantino festival dates in Guanajuato.
Plan your trip: tours across Mexico · flights to Mexico · travel insurance.
Related City Guides
- Oaxaca City Travel Guide
- Mérida Travel Guide
- Mexico City Travel Guide
- Guanajuato Travel Guide
- Pátzcuaro Travel Guide
Plan Your Trip
October is the advance-planning month for Día de Muertos. If witnessing it in Oaxaca, Mixquic, or Janitzio on Lake Pátzcuaro is the goal, book accommodation before September ends - prices spike sharply in the week around November 1–2. Arriving in Oaxaca from October 20 gives you the marigold-filled market preparations without the peak surge. Cenotes across the Yucatán are at their clearest this month: water visibility reaches 30–40 m in systems like Dos Ojos and Gran Cenote. Whale season opens off Banderas Bay (Puerto Vallarta) from late October.
To keep planning, see Mexico Weather in November and Mexico Weather in December.
- 10 Days Yucatán - cenotes in prime condition
- Oaxaca–Chiapas Itinerary - Oaxaca pre-Día de Muertos
- Budget Mexico Itinerary