The windows, in detail.
We list only timing an official source publishes for Acadia. The summit, tide, sunrise, lighthouse, and night-sky rows come from NPS pages, and the fall row from the Maine Forest Service. NPS gives no wildflower bloom months and no foliage peak for Acadia, so we don't either. Thunder Hole is timed by the tide, not the clock, so check the day's high tide before you go. On October 21, near the color peak, the sun rises at 6:56 a.m. and sets at 5:39 p.m. at Hulls Cove.
| Subject | Window | Notes |
|---|---|---|
| Cadillac Mountain sunrise by car | May 20 to Oct 25, 2026, with a reservation | A vehicle reservation is required to drive Cadillac Summit Road from May 20 through October 25, 2026, on top of the entrance pass, and our Acadia reservations page covers how to book. You don't need one to walk or bike up. From December 1 to April 14 the road is closed to cars, so a winter sunrise up there starts with a hike. Overnight parking is prohibited, Island Explorer buses don't serve the summit, and vehicles over 21 feet, RVs, and trailers aren't allowed on the road. |
| Sunrise along the Ocean Path | All year, Sand Beach to Otter Point | NPS says sunrise can be seen from various points along the Park Loop Road from Sand Beach to Otter Point (NPS Sand Beach to Otter Point page). From December 1 to April 14 the stretch from the Schooner Head Road fee station to Otter Cliff Road stays open to cars, one-way. In summer and on weekends the Sand Beach lot and the right lane to Otter Point can fill by 9 am, so a sunrise start beats the rush. |
| Thunder Hole surge | 1 to 2 hours before high tide | NPS recommends coming one to two hours before high tide for the best chance of hearing the roar, and spray here has been seen above 40 feet. At low tide, stairs lead down for a close look at the cliff walls the water carved (NPS Thunder Hole page). The lot is on Park Loop Road past Sand Beach, or walk 0.7 mile from Sand Beach on the Ocean Path. Rising tides can cut off your way back in intertidal areas, and NPS says not to turn your back on the ocean. |
| Fall color | Second week of October (typical peak) | The Maine Forest Service gives the second week of October as the typical peak week for Downeast Maine, and says coastal Maine generally sees peak or near-peak color from mid-October through the end of the month (Maine foliage report). That's a typical week, not a forecast, and NPS doesn't publish a peak for Acadia. The Cadillac reservation season still runs through October 25. Our Acadia fall colors page tracks the season. |
| Bass Harbor Head Light | Busiest around sunset | NPS says to expect congestion here, especially around sunset, when photographers gather. The lot has 27 spaces, roadside parking is prohibited on Lighthouse Road and Route 102A, and no public transit serves the site. The lighthouse isn't open to the public, but you can walk the grounds and a short boardwalk trail to shoreline viewpoints. Buses, trailers, and RVs aren't permitted (NPS Bass Harbor Head Light page). |
| Night sky | New moon, 1 to 2 hours after sunset | NPS says stargazing is best on a new moon, before moonrise, or after moonset, an hour or two after sunset once the leftover light fades. All of the park has dark skies, and the best spots are farthest from towns. NPS names Jordan Pond, the Ocean Path, Sand Beach, and Seawall (NPS stargazing page). In reservation season Cadillac Summit Road closes to vehicles at 9 pm. On June 21 the sun sets at 8:21 p.m., so for a dark summer sky on the summit, NPS says you may hike or bike up. |
| Winter coast and Jordan Pond | Dec 1 to Apr 14 | Most of Park Loop Road, including Cadillac Mountain, is closed to cars. Two stretches stay open: Schooner Head Road to Otter Cliff Road past Sand Beach, one-way, and Jordan Pond Road from Seal Harbor to the Jordan Pond lot. The sun sets at 3:56 p.m. on December 21. Trails routinely ice over, and NPS calls traction devices essential. Our Acadia in winter page covers the season. |
Sunrise and sunset through the year.
Crowds in the photo months.
August is Acadia's busiest month at about 799,000 visits, and July runs 98% of that. September is still 83%, and October, the color month, 70%. Then it drops hard: November runs 9% and February is the quietest at 2%. NPS calls the Park Loop Road near Sand Beach extremely congested in July and August, and the Sand Beach lot and the right lane to Otter Point can fill by 9 am in summer and on weekends.
Early starts help twice here: the light is better and the lots are open. NPS suggests the fare-free Island Explorer, which typically runs mid-June to mid-October, but it doesn't go to the Cadillac summit or Bass Harbor Head Light. Month tradeoffs are on the best time to visit Acadia page.
Rules for cameras, drones, and the coast.
Drones are prohibited: launching, landing, or flying unmanned aircraft anywhere in Acadia is banned (NPS park rules). Audio playback to call in birds is illegal inside the park (NPS birdwatching page). Acadia lists a $100 Special Use Permit fee for filming or photography "in certain situations," and in trail-only areas permitted groups are limited to 20 people (NPS special use permits). The page doesn't define those situations, so a workshop or paid shoot should ask the park first.
NPS doesn't publish a set viewing distance for Acadia's wildlife. It says safe distances depend on the animal, suggests a camera with a zoom lens, and says to back away if an animal approaches. Stepping off trail for a closer view can disturb wildlife and damage fragile ground, so shoot from the trail. Drive with extra care at dawn and dusk, when animals are most active (NPS wildlife viewing page).
On the shore, rising tides can cut off your way back and rogue waves happen, so don't turn your back on the ocean (NPS safety page). Look at tidepools without taking anything. After dark, take care on rocks and beaches and stay out of the water, use a red light, and don't idle in parking areas with your headlights on (NPS night skies page). Overnight parking is prohibited everywhere in the park.
Common questions.
What is the prettiest spot in Acadia National Park?
That's your call, but NPS's visitor counts show where people go. Cadillac Mountain, Jordan Pond, Sand Beach, and Thunder Hole are the four most popular sites, and Bass Harbor Head Light is fifth with about 180,000 visitors a year (NPS Bass Harbor Head Light page). For photos, timing matters as much as the place: Cadillac at sunrise needs a car reservation from May 20 to October 25, Thunder Hole is best one to two hours before high tide, and the lighthouse is busiest at sunset.
Dates, fees, and rules change. Confirm the current details on the official pages before you leave. NPS Cadillac vehicle reservations · NPS current conditions · NPS stargazing · Maine foliage report (Downeast)
Facts on this page last verified September 10, 2026.
Where these facts come from
The Cadillac reservation dates and 9 pm closing come from the NPS vehicle reservations page and the NPS fees page; the winter road closure and traction advice from the NPS winter page; summer congestion and the Island Explorer season from the NPS Park Loop Road page. Tide timing comes from the NPS Thunder Hole page, the Ocean Path distance from the NPS accessibility page, sunrise points and parking fill times from the NPS Sand Beach to Otter Point page, and lighthouse parking, visitor counts, and sunset crowds from the NPS Bass Harbor Head Light page. Night-sky timing and places come from the NPS stargazing page and night rules from the NPS night skies page. The drone ban comes from NPS park rules, the permit fee from NPS special use permits, playback from the NPS birdwatching page, wildlife advice from the NPS wildlife viewing page, and tide safety from the NPS safety page. Fall timing is the Maine Forest Service Downeast foliage page and statewide timing page. Sunrise and sunset come from the U.S. Naval Observatory for 2026 at Hulls Cove Visitor Center in local clock time. Map points are from OpenStreetMap and NPS parking lot data; the park boundary is from the NPS boundary service and state outlines from the U.S. Census. Crowd numbers are five-year monthly means (2021 to 2025) of recreation visits from the NPS Visitor Use Statistics Data Package on NPS IRMA Stats. Independent site, not affiliated with the National Park Service.
Independent site. Not affiliated with or endorsed by the National Park Service. Data comes from the official NPS Visitor Use Statistics Data Package, 2025; editorial analysis is ours. The NPS Arrowhead and other NPS marks are not used.