Affi Falls
Washington • Mount Rainier National Park
By Armen Suny · Last verified Oct 2026
LiDAR & 3D terrain
Photo Credits (5)
About Affi Falls
Tucked into the forested reaches of Mount Rainier National Park and managed by the National Park Service, Affi Falls is a quieter cascade that rewards visitors with a peaceful, woodsy setting. Its lesser-known status inside the park makes it a great option for hikers seeking solitude away from the busier viewpoints, where mossy trunks and shaded slopes frame the fall. As with any visit to a national park, plan according to NPS guidance and seasonal conditions.
The Setting
Affi Falls sits at 5,423 feet within Mount Rainier National Park, in the high mountains of Washington.
Trail & Hike Details
Trail Description
Difficulty: moderate. Trail type: out-and-back. Location/manager: Mount Rainier National Park, managed by the National Park Service. Surface, grade, and technical trail class are not documented in the available data.
What to Expect
Visitors can expect a tranquil setting with the sound of cascading water and surrounding greenery. The falls may be seasonal, so water flow could vary depending on recent rainfall.
Accessibility
Accessibility information is not available. The trail may not be suitable for individuals with mobility challenges.
Frequently Asked Questions
🐶 Are Dogs Allowed at Affi Falls?
❌ Dogs are not allowed
Pets aren't allowed on any trail in Mount Rainier National Park, except leashed dogs on the Pacific Crest Trail along the park's eastern edge.
Are There Any Fees or Permits Required?
🆖 No fees required
🏊 Is There Swimming at Affi Falls?
❌ Swimming is not allowed
When to Visit
Spring and early summer are typically the best times to visit, as water flow is likely to be at its peak due to snowmelt and rainfall.
Seasonal Access
The best time to visit is Spring, Summer, and Fall. Access roads and trails may close during winter due to snow. Check with Mount Rainier National Park for current conditions.
Safety Information
Trails may be slippery or uneven, especially after rain. Visitors should exercise caution and wear appropriate footwear. Cell service may be limited in the area.
Current Water Conditions
These readings come from the USGS gauge on Huckleberry Creek, 9.2 miles away, not on Affi Falls's own stream. Use them as a sign of whether the area is running wet or dry.
29 ft³/s
Current discharge — how much water is flowing
Much lower than usual for this time of year
Based on 15 years of record
36.84 ft
Water depth at gauge
7-Day Discharge Trend
What does this mean for your visit?
Flow is well below normal for this time of year, so the waterfall may be a trickle.
About This Gauge
This gauge is on a nearby waterway and may not reflect exact conditions at the falls.
7-Day Flow Outlook
Based on the USGS gauge HUCKLEBERRY CREEK NEAR GREENWATER, WA (15 km away).
Today
Low
32 cfs
4/10Tomorrow
Low
31 cfs
4/10Tue
Low
33 cfs
6/10Wed
Low
32 cfs
4/10Thu
Low
31 cfs
6/10Fri
Low
29 cfs
6/10Sat
Low
27 cfs
4/10Best window: Tue — low flow, mostly sunny (trip score 6/10).
Best time of year: this gauge typically runs highest from mid April to early July, peaking in June.
How we calculate this
This is a transparent outlook, not a precise forecast. We take the waterfall's current flow strength (how it ranks against its historical normal for today, from the nearest USGS stream gauge), carry that ranking forward along the gauge's seasonal curve, and nudge it for forecast rain. Confidence is highest for the next day or two and falls further out. Always check official conditions and your own judgment before visiting — high flows can be dangerous.
Know when to go.
Get a free email alert when waterfalls near Greenwater hit peak flow. We only send when conditions are worth the trip — no weekly newsletters, no spam.
Is Affi Falls Frozen?
Updated about 19 hours agoNot frozen highs above freezing lately 3 more freezing days forecast
Affi Falls is not frozen right now; highs have been above freezing. Yesterday ran 41°F to 34°F. 3 freezing days are forecast, so ice may start to form.
- Days below freezing
- 0 of the last 14
- Current cold streak
- 0 days
- Freezing days ahead
- 3 of the next 7
- Flow
- 34 ft³/s
Winter safety. Frozen falls are the one waterfall trip with a documented injury pattern: falling ice, and ice-glazed rock and trail. Wear microspikes, keep well back from the base and from overhangs, and never walk out on ice over moving water.
Estimate from Open-Meteo daily temperatures at the falls, the LiDAR-measured facing direction, and the nearest stream gauge. It is a likelihood, not a report from the trail. See every frozen waterfall in Washington.
Weather Forecast
The Terrain, Seen by LiDAR
Aircraft-mounted lasers measured this ground to within inches. Trees and buildings are digitally stripped away, leaving the bare shape of the land the water has carved.
The ground through the falls loses about 275 feet in steep steps rather than one leap. The ground at the falls is roughly 5,429 feet above sea level.
The whole reach is steep: about 80 feet of descent in the 500 feet above the falls and another 248 feet in the 500 feet below. The falls face west and glow in afternoon and evening light.
Drag to compare. The dot marks the waterfall. The frame is about a mile across.
- Ground elevation
- 5,429 feet
- Measured by 3-meter lidar
- Drop at the falls
- About 275 feet
- Change in ground height within ~250 feet of the falls
- Faces
- West
- Glows in afternoon and evening light.
A slice through the lidar ground surface, from above the falls to downstream (heading west).
Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.
Location & Access
Getting There
The exact location and directions to Affi Falls are not well-documented. Visitors are advised to consult local hiking resources or maps for guidance.
Get Directions on Google MapsParking
Parking availability is unclear. It is recommended to check with local authorities or recent visitor reports for updated information.
Elevation
5,423 feet above sea level
Coordinates
46.939830° N, -121.687041° W
Land Management
Managed by NPS
Visitor Tips & Gear
Check weather conditions before visiting, as trails may become muddy or slippery. Bring a map or GPS device, as the area may not have clear signage.
This trail sits at 5,423 ft above sea level
Elevated TrailUV radiation is roughly 22% stronger at this elevation than at sea level, and the dry air accelerates dehydration. Extra sun protection and fluids go a long way.
As an Amazon Associate, we earn from qualifying purchases.
Coppertone Sport SPF 50 Sunscreen
UV intensity jumps ~4% per 1,000 ft — at this elevation you can burn in half the time.
Sun Bum SPF 30 Lip Balm (3-Pack)
Lips have almost no natural UV protection and burn fast in thin, dry mountain air.
Liquid I.V. Electrolyte Packets
You lose moisture ~2x faster at elevation — electrolytes help you absorb water efficiently.
ROCKNIGHT Polarized UV400 Sunglasses
High-altitude glare off rock and water is intense — UV400 lenses block 99%+ of UVA/UVB.
Where to Stay
Mountain Meadows Inn & Chalet Suites
Tiny Timber
Lafa Cabin - Luxe A Frame Retreat with Hot Tub, Sauna, Firepit- 5 Min to Mt Rainier
Gateway Inn & Cabins
Browse vacation cabins and private rentals nearby
Unique outdoor stays — tents, yurts, and treehouses
Rent a campervan or RV for your waterfall road trip
Some links are affiliate links. We may earn a commission at no extra cost to you.
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Nearby Attractions
The surrounding area may feature additional hiking trails and natural attractions typical of Washington's forested regions.
Wildlife
The area may host a variety of wildlife, including birds, deer, and small mammals. Be cautious of potential encounters with bears or other larger animals.
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