Kilkenny weather by month
The best time to visit Kilkenny is June to August — 89/100 in July, 20°C and 12 rainy days. The best season is summer, June to August (87/100 on average).
The worst month is December at 53/100 — cold, rainy, clean air. See December →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit Ireland →
Best season: June to August (87/100 on average) · worst December (53/100)
- Days
- 20°C
- Nights
- 13°C
- Wet days
- 12
- Sun
- 8.7 h
- Humidity
- 78%
- Daylight
- 16 h

Kilkenny, month by month
Comfort score out of 100 for the kind of trip Kilkenny is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
What's on in Kilkenny through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
- March
- St Patrick's Festival and Tradfest13–17 Mar (usually)Festival
- St Patrick's Day16–18 MarHoliday
- April
- Kilkenny Roots Festival1–4 MayFestival
- May
- Cat Laughs comedy festival28 May – 5 Jun (usually)Festival
- June
- Ballykeeffe Amphitheatre summer20 Jun – 25 Aug (usually)Festival
- August
- Kilkenny Arts Festival6–16 AugFestival
- October
- Savour Kilkenny22–26 OctFestival
- November
- Subtitle Film Festival17–29 Nov (usually)Festival
- Yulefest Christmas market26 Nov – 23 Dec (usually)Festival
Crowds in Kilkenny in July
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySummer holidays in Ireland, school holidays in 7 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Good to know before you go to Kilkenny
Real experiences from travellers' own write-ups, quoted with a link to the original.
Visas & entry
A visitor's guide to Kilkenny notes the entire city is walkable end to end in about 20 minutes, unlike Dublin where buses and trams are genuinely necessary, making it one of the easiest "real Ireland" day trips to reach without a car, just 90 minutes from Dublin by train. Their advice for the castle itself: the self-guided ticket runs €8 versus €12 for a guided tour, but the guided option is worth the extra cost specifically for the storytelling, since the Victorian state rooms inside are more interesting with context than without.
Traveller notes on Kilkenny
What people who have been say about the place — the year-round notes first, then month by month.
Forum posters describe January in Ireland as bringing a better-than-average chance of snow and real ice risk, with main and most secondary roads gritted but minor roads still requiring caution. Posters are direct that the biggest practical issue is how short the days run, with some days barely seeming to get properly light at all, and typical temperatures sitting in the 40sF (around 4-9C) alongside wet, drizzly conditions. Posters specifically recommend Kilkenny as a well-suited January destination since it's easily reached from Dublin and every attraction can be covered on foot, making it a practical, compact city pick for winter's short daylight hours. Posters generally recommend leaning on Kilkenny's walkable city center, pubs and indoor sites as the main plan for a January visit rather than fighting the weather.
Forum regulars call July Ireland's driest month on paper, but still expect drizzle - one visitor described hail, strong winds, thunder and sun all within 8 hours, and the recurring line is that a forecast is only reliable about 48 hours out at best. The standard packing list: a light jacket and sweater for cool nights, proper rain gear with a hooded waterproof top rather than an umbrella (which regulars call impractical in Irish towns and cities). July also draws the year's biggest crowds to nearby tourist hubs like Killarney, with several posters suggesting September instead for a similar climate with noticeably fewer visitors.
Add your own note from Kilkenny's card on the map.