Killarney in Winter
In winter (December, January and February), Killarney sees average daytime highs around 8°C and overnight lows near 3°C, with 344 mm of precipitation over about 48 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Across winter, daytime highs hold fairly steady around 8°C. The sky is clear or mostly clear about 7% of the time across winter, and the air most often feels dry.
Winter is Killarney's weakest season of the year to visit on our travel score. For the whole year in context, see Killarney's year-round climate.
- Avg daytime high
- 8°C
- coldest season of the year
- Avg overnight low
- 3°C
- Precipitation
- 344 mm
- 48 wet days
- Avg wind
- 15 km/h
- Travel score
- 1.1
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Killarney in Winter
Across winter, daytime highs hold fairly steady around 8°C.
A typical winter day in Killarney reaches about 8°C and drops to 3°C overnight. The warmest of the three months is February, the coolest February.
How winter really feels in Killarney
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 87 that feel at or below 0°C.
The story in winter is cold — wind chill drags the overnight "feels like" below the raw low.
Killarney weather by month
How the three winter months (December, January and February) 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 Winter
The sky is clear or mostly clear about 7% of the time across winter.
Chance of precipitation in Winter
Killarney gets around 344 mm of rain and snow over 48 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 15 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 7 h 54 min in early December to 10 h 24 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 1.0 kWh/m².
Is winter a good time to visit Killarney?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Killarney.
What to pack for Killarney in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Killarney sees daytime highs around 8°C and nights near 3°C. Pack a warm layer and rain gear. Worth having: a heavy coat. About 48 days see rain.
Sea temperature near Killarney in Winter
The nearest coast averages about 10°C across winter — 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 Winter
Clear-sky midday UV across winter averages around 1. 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.