The best time to start a northbound Pacific Crest Trail thru-hike in 2026 is between late April and mid-May. This timing lets you cross the desert before peak heat, reach the 4,009 m Sierra Nevada around mid-June once most snow has melted, and finish in Washington before mid-September storms close the North Cascades.
Timing the 4,265 km Pacific Crest Trail is the single biggest planning decision you will make. Start too early and you hit the Sierra under deep snow; start too late and Washington's autumn storms catch you short of Canada. Here is how the season breaks down for 2026.
When should you start the PCT northbound in 2026?
Most northbound hikers begin at Campo on the Mexican border between April 20 and May 10. This window balances three constraints: desert heat that climbs past 35 C by late May, Sierra snowpack that needs to consolidate, and a Canadian finish before the North Cascades turn wintry in late September. The Pacific Crest Trail Association staggers permit start dates precisely so hikers spread across this window rather than bunching at one date. For 2026 the snowpack outlook is normal to slightly above average, pushing the ideal Sierra entry to around June 15.
Spring: the desert section (April to May)
The first 1,100 km cross Southern California's deserts, where daytime highs reach 30–38 C and water sources sit 25–40 km apart. Start in late April and you walk in comfortable 18–25 C mornings, hiking early and resting through the afternoon. A well-ventilated pack such as the Hyperlite Mountain Gear 2400 Windrider keeps your back cooler on long water carries. Carry capacity for 5–6 L of water is essential between Scissors Crossing and the next reliable source. Our Pacific Crest Trail packing list covers the desert water-carry setup in detail.
Early summer: the Sierra Nevada (June)
The High Sierra is the crux of PCT timing. Entering Kennedy Meadows around June 10–18 means crossing Forester Pass (4,009 m) and Glen Pass on consolidating snow that holds an axe and microspikes well in the morning. Go too early, in a heavy snow year, and creek fords swollen with melt become the real danger. The 2026 forecast points to a standard melt-out, so a mid-June entry should find passes largely clear by early July. A pack that carries a bear canister and extra food cleanly, like the Zpacks Arc Blast 55L, earns its place here.
Late summer: Northern California and Oregon (July to August)
From the Sierra north, the trail mellows. Oregon's gentle grades let hikers post 45 km days, and many cover the state's 692 km in under three weeks. Wildfire smoke is the main variable: July and August fires periodically close sections, and in 2026 hikers should track closures daily through the PCTA. Afternoon temperatures of 25–30 C and reliable water make this the most enjoyable stretch. A comfortable suspended pack such as the Osprey Atmos AG 65 suits hikers carrying a heavier kit through this phase.
Autumn: Washington and the finish (September)
Washington's North Cascades demand a finish before the first serious storms, usually by mid-to-late September. The 800 km state stretch holds the trail's most sustained climbs and its most fickle weather, with snow possible above 1,800 m by late September. Hikers who entered the Sierra on time arrive at Manning Park in Canada by mid-September. Late starters or slow seasons face a real risk of being snowed off the final passes.
What about a southbound (SOBO) hike?
Southbound hikers start at the Canadian border in late June to early July, once Washington's snow clears, and finish in the desert by November. SOBO suits experienced hikers comfortable with early-season snow and smaller trail crowds. It is harder logistically — the toughest terrain comes first while your body is still adapting — but it dodges the northbound crowd at the southern terminus. Compare the trade-offs against the Rockies route in our PCT vs CDT comparison.
How a heavy snow year changes your start date
Snowpack is the variable that can override the calendar. In a heavy snow year, the High Sierra holds dangerous conditions weeks longer, swelling creek fords with meltwater and burying the tread above 3,000 m into July. Hikers respond in three ways: starting later in May so the snow consolidates, slowing their pace to let the Sierra melt out, or flip-flopping north to hike Northern California and Oregon first before returning to the Sierra. The California snow survey, published through the season, is the figure to watch — a snowpack above 130% of average is the trigger to delay or flip. The 2026 outlook of normal-to-slightly-above-average should not force these contingencies, but the plan matters because the Sierra is where most weather-related rescues on the trail occur. Hikers who later move to the higher, snowier Continental Divide Trail face the same calculus on Colorado's passes, which hold snow even deeper into summer. Build flexibility into your 2026 itinerary rather than locking every resupply box to a fixed date, and carry an ice axe and microspikes through the Sierra regardless of the forecast. A well-fitted load-hauling pack such as the supportive Osprey Atmos AG 65 makes the heavier early-season Sierra carries safer on snow, where every extra kilo is harder to manage on an exposed traverse.
For snowpack data and official timing guidance, consult the Pacific Crest Trail Association and the US Forest Service, which publish current Sierra conditions for the 2026 season.
Frequently Asked Questions
What month should I start the PCT in 2026?
Start the Pacific Crest Trail northbound between late April and mid-May 2026. This lets you clear the desert before peak heat, reach the Sierra Nevada around June 15 once snow consolidates, and finish Washington before mid-September storms. The PCTA assigns staggered permit start dates within this window to manage crowding.
How much snow will be in the Sierra in 2026?
The 2026 Sierra snowpack is forecast to be normal to slightly above average, meaning passes like the 4,009 m Forester Pass should melt out by early July. Hikers entering Kennedy Meadows around June 10 to 18 will likely cross consolidated snow in the mornings. Always check the latest snow survey data before committing to your start date.
Can you hike the PCT in winter?
No. The Pacific Crest Trail is not a winter route. The Sierra Nevada and North Cascades hold deep snow from October through May, with avalanche risk and buried tread. The hiking season runs roughly late April to late September for a northbound thru-hike, and June to November for southbound.
Is the PCT desert section dangerous in summer?
The desert section is manageable in spring but dangerous by mid-summer, when highs exceed 38 C and water sources sit 25 to 40 km apart. Hikers starting in late April avoid the worst heat by walking in cool mornings and resting through the afternoon. Carrying capacity for 5 to 6 litres of water is the key safety margin.
How long is the PCT hiking window?
The northbound PCT window is about five months, from a late-April start to a mid-September Canadian finish, covering 4,265 km. Most hikers average 25 to 40 km per day. Missing the window risks being caught by Sierra creek floods early or North Cascades snow late, both of which can end a hike.
