When to walk the Kerry Way (Killarney–Killarney)

For most walkers, starting in late May to early August gives the best conditions on the Kerry Way (Slí Uíbh Ráthaigh). You get long daylight, milder temperatures, firmer trails, and the best chance of stringing together dry, usable hours—though quick showers are always part of the deal.

Outside that window it’s still very doable, just greyer, damper, and with shorter days the further you move into autumn and winter. If you’re chasing views and easier underfoot conditions, the mid‑summer window is kinder; if you’re happy to flex plans, the shoulder months can be rewarding and quieter.

Late May, June, July, early August — best overall

This is the pick for most walkers.

What it’s like:

• Changeable but generally kind: plenty of cloud and passing showers, with long dry spells and brighter breaks.
• Milder days and comfortable nights; winds usually gentler than in the colder months.
• Ground mostly firming up, though boggy patches remain on upland sections.

Why it works:

• Very long daylight lets you take your time over longer stages or wait out a shower.
• Better chance of clear views between systems, especially in late spring and early summer.
• Services and accommodation are fully open.

Notes:

• July into early August can feel humid after showers; midges can be pesky in calm, damp evenings—bring repellent and a head net for stops.
• High season around Killarney and the Ring of Kerry is busy: book beds ahead.

April to mid‑May — early‑season, cooler and mixed

Expect a classic spring mix: plenty of cloud with frequent light showers, some brighter windows, and the odd heavier burst. It’s cooler overall, with chilly nights on higher ground and the chance of a brief late cold snap. Trails can still be wet underfoot from winter. Quieter and lovely when it brightens, but have good waterproofs and keep stages moderate.

Mid to late August — warm spells, more humidity

Still a good time, with many walkable days, but skies often stay cloudy with on‑off drizzle and occasional longer rain. Air can feel humid rather than crisp. Vegetation is at its fullest, so sections with bracken can feel overgrown after wet spells. Tourist pressure remains high; book ahead and start early to keep your day flexible.

September — calmer feel, more grey days

Quieter on the trail and in towns. Conditions turn cooler, and while there are pleasant windows, many days are cloudy with drizzle or passing showers and limited sunshine. Daylight is shortening, so plan steady stages and expect damp mornings. Very walkable if you’re content with mixed skies rather than big views.

October to March — off‑season, for experienced walkers

This stretch is typically damp, windy at times, and often overcast:

• Frequent drizzle or light rain with occasional heavier spells; short bright breaks between fronts.
• Cool to cold, with frosty nights at times and a small chance of sleet or brief hill snow in mid‑winter.
• Short days make timing and navigation more demanding; ground stays wet and slippery on upland bogs.

It can be rewarding in a wild, quiet way, but you’ll need solid waterproofs, warm layers, confident navigation in low cloud, and flexible plans. Some accommodation and services operate reduced hours.

A quick word on Kerry weather

The Kerry Way sits on the Atlantic’s front line. Weather is changeable year‑round, with “four seasons in a day” perfectly possible. Whatever month you choose, pack a reliable waterproof, warm layers for exposed passes, and footwear that’s happy in mud and standing water. Plan for showers, enjoy the bright breaks—and in late May to early August you’ll usually have the light and the milder air to make the most of them.

Of course, while these recommendations provide a solid starting point, everyone's preferences and circumstances are unique. Our search tool allows you to customize your journey to align with your specific needs and preferences, ensuring the best possible experience on the trail.

Furthermore, if your plan differs from walking the standard stages from Killarney to Killarney, then you can edit the Search Settings below accordingly.