autumn Guide · September – November
Bloom & foliageWildlifeOceans & watersAutumn Canopy & The Monarch Migration Flyway
Tracking deciduous color waves alongside North America's great butterfly migration.
Autumn is governed by shortening photoperiods and cool night temperatures. While warm autumns delay maple senescence in New England and Japan, migratory monarch butterflies ride cold fronts south and humpback whales congregate along coastal upwelling canyons.
How to time this phenomenon
- Unlike spring blooms, autumn warmth delays peak foliage—watch for positive thermal shifts on Flaurora that push Kyoto or Nikko maples deeper into November.
- Follow the elevation gradient: Nikko's Ryuzu and Kegon falls turn two to three weeks before Kyoto's temple gardens.
- Pair Pacific Grove's coastal monarch sanctuary with Monterey Bay's autumn humpback and blue whale feeding season on the same central California itinerary.
Safety & responsible visiting
- Wild marine and terrestrial sightings are probabilistic and depend on live wind and thermal conditions.
- In monarch sanctuaries, remain silent on designated trails; on whale-watching vessels, observe mandatory 100 m–300 m approach buffers.
Live readiness across this trail
7 tracked destinations
Autumn Foliage0
Stowe
United States
EndedLow confidenceHistorical estimateSeason closed 20 days ago. Next opens in 315 days
Northern Vermont Green Mountain sugar maples peaking in early October.
Autumn Foliage0
Nikko
Japan
EndedLow confidenceHistorical estimateLive cameraSeason closed 4 days ago. Next opens in 330 days
High-elevation Japanese larch and maple gorges turning from mid-October.
Autumn Foliage73
Kyoto
Japan
DormantMedium confidenceLive cameraSeason opens in 1 day
Late-autumn Japanese maples cresting in mid-to-late November.
- Monarch Migration
0
Point Pelee
Canada
EndedLow confidenceHistorical estimateSeason closed 25 days ago. Next opens in 296 days
September Lake Erie peninsula staging roosts during southward migration.
- Monarch Migration
32
Pacific Grove
United States
EmergingMedium confidencePeak in 27 days
Western monarch coastal eucalyptus and pine overwintering sanctuary.
- Whale Migration & Coastal Sightings
1
Monterey Bay Submarine Canyon
United States
DecliningMedium confidenceLive cameraPeak was 70 days ago
Deep submarine canyon anchovy and krill runs drawing humpback and blue whales nearshore.
- Monarch Migration
0
Sierra Chincua
Mexico
DormantMedium confidenceSeason opens in 6 days
High-altitude oyamel fir biosphere sanctuaries in central Mexico.
More field guides
View all 10 guides →spring Guide
Spring Bloom & Southern Hemisphere Dark Skies
Tracking cherry blossom degree days, bulb rows, desert superblooms, and the Eta Aquariids.
summer Guide
Summer High-Meadows, Lavender & Perseid Dark Skies
High-altitude snowmelt flora, Provençal harvests, and August's premier meteor stream.
winter Guide
Winter Aurora Oval & Geminid Dark Skies
Geomagnetic storms under polar night and December's 120-ZHR Geminid meteor shower.
Thematic Guide
Japan Sakura & Autumn Momiji: Timing Tokyo, Kyoto & Nikko by Degree Days
How cumulative spring warmth and autumn cooling shift Japan's cherry blossom and maple fronts.
Phase 3 · Validation & roadmap priorities
Which phenomena and destinations should Flaurora track next?
We only launch a phenomenon once we can verify an authoritative observation or forecast feed. Vote on candidate Phase 4 categories below or suggest a specific destination for source validation.
Snowmelt Waterfalls & River Peak Flow
Yosemite Valley, Lauterbrunnen, and Nordic snowmelt discharge peaks in late spring.
Target feed: USGS National Water Information System (NWIS) streamgauges
Volcanic Activity & Geothermal Landscapes
Official alert levels, aviation color codes, and safe viewing perimeters.
Target feed: USGS Volcano Hazards Program & IMO Iceland official advisories
Whale Migration & Coastal Sightings
Humpback, gray, and southern right whale coastal migration corridors.
Target feed: NOAA Fisheries, Happywhale & regional marine sanctuaries
Marine Bioluminescence Bays & Shores
Dinoflagellate and ostracod dark-moon windows in Puerto Rico, Tomales Bay, and Jervis Bay.
Target feed: New-moon ephemeris, SST anomalies & reserve monitoring
Synchronous Fireflies
Great Smoky Mountains, Congaree, and Japanese genji-botaru river valleys.
Target feed: Accumulated GDD (base 10°C) & NPS park lottery windows
Glacier Calving & Seasonal Lake Ice
Perito Moreno, Ilulissat Icefjord, and Lake Baikal winter freeze/breakup.
Target feed: NSIDC, Copernicus cryosphere & national park ice telemetry
Request a destination or phenomenon
Tell us what natural event you are planning around and how you use Flaurora.