Kilkenny in Summer
In summer (June, July and August), Kilkenny sees average daytime highs around 18°C and overnight lows near 11°C, with 205 mm of rain over about 36 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Across summer, daytime highs hold fairly steady around 18°C. The sky is clear or mostly clear about 5% of the time across summer, and the air most often feels dry.
Summer is Kilkenny's best season of the year to visit on our travel score. For the whole year in context, see Kilkenny's year-round climate.
- Avg daytime high
- 18°C
- warmest season of the year
- Avg overnight low
- 11°C
- Rainfall
- 205 mm
- 36 wet days
- Avg wind
- 12 km/h
- Travel score
- 5.2
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Kilkenny in Summer
Across summer, daytime highs hold fairly steady around 18°C.
A typical summer day in Kilkenny reaches about 18°C and drops to 11°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Kilkenny
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Kilkenny weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 8° / 3° | 71 | 12.8 | 0.6 | 8 | 1.1 |
| Feb | 8° / 3° | 58 | 11.4 | 0.8 | 9.5 | 1.2 |
| Mar | 10° / 3° | 58 | 11.6 | 0.7 | 11.5 | 1.9 |
| Apr | 12° / 5° | 65 | 12.5 | 0 | 13.6 | 2.9 |
| May | 15° / 7° | 65 | 12.9 | 0 | 15.5 | 3.9 |
| Jun | 17° / 10° | 70 | 11.8 | 0 | 16.5 | 5.0 |
| Jul | 19° / 12° | 65 | 12.5 | 0 | 16.1 | 5.3 |
| Aug | 18° / 11° | 71 | 11.8 | 0 | 14.5 | 5.4 |
| Sep | 16° / 10° | 61 | 10.7 | 0 | 12.4 | 4.8 |
| Oct | 13° / 7° | 78 | 12.3 | 0 | 10.3 | 3.3 |
| Nov | 10° / 5° | 77 | 12.1 | 0.1 | 8.5 | 2.0 |
| Dec | 8° / 3° | 77 | 13.4 | 0.5 | 7.5 | 1.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 5% of the time across summer.
Chance of precipitation in Summer
Kilkenny gets around 205 mm of rain over 36 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 12 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 16 h 12 min in early June to 13 h 30 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.3 kWh/m².
Is summer a good time to visit Kilkenny?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Kilkenny for sightseeing.
What to pack for Kilkenny in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Kilkenny sees daytime highs around 18°C and nights near 11°C. Worth packing: rain gear and sun protection. About 36 days see rain.
Sea temperature near Kilkenny in Summer
The nearest coast averages about 15°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 59 km away) is warmest in August at about 16°C and coldest in February near 9°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 9 | 9 | 9 | 10 | 12 | 14 | 16 | 16 | 15 | 14 | 12 | 10 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 9 | Bracing |
| Feb | 9 | Bracing |
| Mar | 9 | Bracing |
| Apr | 10 | Bracing |
| May | 12 | Bracing |
| Jun | 14 | Bracing |
| Jul | 16 | Cool |
| Aug | 16 | Cool |
| Sep | 15 | Cool |
| Oct | 14 | Bracing |
| Nov | 12 | Bracing |
| Dec | 10 | Bracing |
UV index in Kilkenny in Summer
Clear-sky midday UV across summer averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Kilkenny peaks around August 13 at about 6 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 3 | 4 | 5 | 6 | 5 | 6 | 4 | 2 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | High | High | Moderate | Low | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 3 | Moderate |
| Apr | 4 | Moderate |
| May | 5 | High |
| Jun | 6 | High |
| Jul | 5 | High |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 2 | Low |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Kilkenny?
Kilkenny sits at 52.7°N, 7.3°W, 48 m above sea level, in Ireland. The nearest listed city is Carlow, 30 km away.
Topography around Kilkenny
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kilkenny.
Within 3 km, the terrain around Kilkenny has only modest variations in elevation — a maximum elevation change of 71 m around an average of 62 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 330 m; within 80 km, large variations in elevation — a maximum elevation change of 928 m.
The land around Kilkenny is covered by grassland (50%) within 3 km, grassland (77%) within 16 km, and grassland (67%) within 80 km.
Ireland travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type G
- 230 V · 50 Hz
- Prices
- ≈ 85% of US
- price level, 2025
- GDP per capita
- $131,592
- 2025
- Happiness
- 6.9 / 10
- World Happiness, 2025
- Safe drinking water
- 96%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2023
- Road deaths
- 3.1
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Kilkenny (52.6542°, -7.2522°, elevation 48 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.