Annapurna Base Camp Trek: Best Seasons and Weather Patterns in 2025

Pokhara, June 2025 — As Nepal’s trekking industry enters a new era of regulation and increased international attention, the Annapurna Base Camp (ABC) trek remains one of the most sought-after experiences for domestic and foreign trekkers alike. However, changing climate conditions and recent weather irregularities in the Himalayas make it more important than ever to understand the best time to undertake this journey.

This article offers a detailed look at the seasonal patterns, current climate developments, and practical recommendations for those planning the ABC trek in 2025.

Why Seasonality Matters in 2025

Traditionally, Nepal’s trekking calendar revolves around two main seasons: spring (March to May) and autumn (September to November). These months are known for their stable weather, clear skies, and vibrant natural beauty. However, 2025 has already shown some early signs of disruption.

According to the Meteorological Forecasting Division of Nepal, the 2025 spring season saw above-average temperatures in lower regions and unexpected snowfalls at higher elevations, which temporarily disrupted sections of the trail in March and early April.

Detailed Seasonal Overview for 2025

Spring (Mid-March to Early May)

• Recommendation: One of the best trekking seasons, especially from late March onwards.

• Highlights: Rhododendron forests in full bloom, stable weather, and good mountain visibility.

• Caution: Early March may still see snow above 3,000 meters. In 2025, trekkers reported difficulty near Deurali and Machhapuchhre Base Camp due to lingering snow.

Monsoon (June to Mid-September)

• Recommendation: Not suitable for most trekkers.

• Challenges: Heavy rainfall, landslides, obscured views, and increased risk of leeches in forested areas.

• Exceptions: Some experienced trekkers attempt the trail during early June or early September when there may be temporary dry windows.

Autumn (Late September to November)

• Recommendation: The most popular and reliable trekking season.

• Highlights: Clear skies, fresh landscapes post-monsoon, and vibrant village life during harvest season.

• Forecast for 2025: October is predicted to offer some of the most stable and picturesque conditions in recent years.

Winter (December to February)

• Recommendation: Only for experienced trekkers.

• Challenges: Harsh cold, snow-blocked trails, and limited lodge availability at higher elevations.

• Note: In January 2025, snowstorms led to temporary trail closures between Deurali and ABC.

2025 Weather Trends and Climate Warnings

Climate scientists in Nepal have raised concerns about shifting weather patterns in the Annapurna region. El Niño effects, combined with regional warming, have made traditional seasonal indicators less predictable.

Key updates:

• Sudden snowfalls were reported as late as mid-April.

• Unseasonal spring thunderstorms occurred more frequently this year.

• October remains dry overall, but past trends suggest possible short bursts of unseasonal rain.

These shifts suggest that even in “ideal” months, trekkers should remain flexible and well-informed.

What Trekkers Need to Know

Given the unpredictable weather, trekking in 2025 demands more preparation than ever. With Nepal’s recent guide regulations making certified guides mandatory for treks like ABC, most visitors will benefit from having local support. However, individual responsibility remains crucial.

Recommendations for trekkers:

• Check the latest weather reports from the Department of Hydrology and Meteorology.

• Avoid early March and mid-June, when weather shifts tend to be most volatile.

• Make accommodation reservations in advance, especially in October and April.

• Carry thermal layers even in spring, as night temperatures can fall below freezing at base camp.

Final Thoughts

Trekking to Annapurna Base Camp is no longer just about picking the right season—it’s about preparing for unexpected shifts and having the right mindset to adapt. The best windows in 2025 appear to be from late March to early May and again from late September to early November.

In a time of climate uncertainty, those who plan wisely will continue to experience the stunning landscapes and life-changing journeys that Annapurna offers. For Nepali and international trekkers alike, 2025 serves as a reminder that the mountains remain beautiful, but demand respect.