Killarney in Fall
In fall (September, October and November), Killarney sees average daytime highs around 13°C and overnight lows near 7°C, with 310 mm of rain over about 43 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 17°C in early September to 9°C by late November. The sky is clear or mostly clear about 7% of the time across fall, and the air most often feels dry.
Fall is Killarney's 2nd-best season to visit on our travel score. For the whole year in context, see Killarney's year-round climate.
- Avg daytime high
- 13°C
- 2nd-warmest season
- Avg overnight low
- 7°C
- Rainfall
- 310 mm
- 43 wet days
- Avg wind
- 13 km/h
- Travel score
- 3.1
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Killarney in Fall
Over the season highs ease from about 17°C in early September to 9°C by late November.
A typical fall day in Killarney reaches about 13°C and drops to 7°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Killarney
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Killarney weather by month
How the three fall months (September, October and November) 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° | 119 | 16.9 | 0.6 | 8 | 1.0 |
| Feb | 8° / 2° | 100 | 14.3 | 0.6 | 9.6 | 1.2 |
| Mar | 10° / 3° | 91 | 14.4 | 0.5 | 11.5 | 1.8 |
| Apr | 12° / 4° | 93 | 14 | 0.2 | 13.6 | 2.6 |
| May | 14° / 7° | 99 | 15.8 | 0 | 15.4 | 3.4 |
| Jun | 16° / 9° | 90 | 14.3 | 0 | 16.4 | 4.3 |
| Jul | 18° / 11° | 95 | 14.4 | 0 | 16 | 4.9 |
| Aug | 17° / 11° | 99 | 15 | 0 | 14.4 | 4.7 |
| Sep | 16° / 9° | 83 | 12.6 | 0 | 12.4 | 4.3 |
| Oct | 13° / 7° | 115 | 15.3 | 0 | 10.4 | 3.1 |
| Nov | 10° / 5° | 112 | 15.3 | 0.1 | 8.5 | 1.8 |
| Dec | 8° / 3° | 125 | 16.5 | 0.5 | 7.6 | 1.1 |
Cloud cover in Fall
The sky is clear or mostly clear about 7% of the time across fall.
Chance of precipitation in Fall
Killarney gets around 310 mm of rain over 43 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 13 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 24 min in early September to 7 h 54 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 1.9 kWh/m².
Is fall a good time to visit Killarney?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in Killarney.
What to pack for Killarney in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Killarney sees daytime highs around 13°C and nights near 7°C. Pack a warm layer and rain gear. About 43 days see rain.
Sea temperature near Killarney in Fall
The nearest coast averages about 13°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 55 km away) is warmest in August at about 16°C and coldest in March 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) | 10 | 10 | 9 | 10 | 12 | 14 | 15 | 16 | 15 | 14 | 12 | 11 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 10 | Bracing |
| Feb | 10 | Bracing |
| Mar | 9 | Bracing |
| Apr | 10 | Bracing |
| May | 12 | Bracing |
| Jun | 14 | Bracing |
| Jul | 15 | Cool |
| Aug | 16 | Cool |
| Sep | 15 | Cool |
| Oct | 14 | Bracing |
| Nov | 12 | Bracing |
| Dec | 11 | Bracing |
UV index in Killarney in Fall
Clear-sky midday UV across fall averages around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Killarney 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 | Moderate | 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 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Killarney?
Killarney sits at 52.1°N, 9.5°W, 0 m above sea level, in Ireland. The nearest listed city is Tralee, 27 km away.
Topography around Killarney
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Killarney.
Within 3 km, the terrain around Killarney has only modest variations in elevation — a maximum elevation change of 156 m around an average of 50 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 963 m; within 80 km, large variations in elevation — a maximum elevation change of 1,051 m.
The land around Killarney is covered by grassland (48%) and trees (29%) within 3 km, grassland (77%) within 16 km, and grassland (54%) and water (36%) 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 Killarney (52.0598°, -9.5086°, elevation 0 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.