AI-generatedKillarney at a glance
- Best time
- Jun – Sep
- Warmest month
- Jul · 18°
- Sunshine a year
- 1,330 h
- Rain a year
- 1,163 mm
- Climate
- Maritime
- Time zone
- UTC+0 / UTC+1
- Elevation
- 32 m
Climate in Killarney
Killarney has a maritime climate with moderate summers and cool, often grey winters. July is the warmest month with average highs of 18 °C, while January is the coolest at 8 °C. With around 1,330 hours of sunshine a year, Killarney is rather dull; May is the sunniest month with 5.7 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Poor
Best time to visit: June – September
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 9°
- Midday, 13:00: about 13°
- Afternoon, 16:00: about 14°
- Evening, 20:00: about 12°
- Night, 23:00: about 11°
08:0118:46
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:40–08:47 · evening 18:00–19:07
- Blue hour
- Morning 07:27–07:40 · evening 19:07–19:21
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Killarney in October?
In October, Killarney is cool: daytime highs average 14 °C, and nights cool down to about 9 °C. The sun is scarce, with only about 3 hours a day. It rains often – on about 16 days, adding up to 111 mm. All in all, October is not an ideal month for a holiday in Killarney.
More details for October
- Daylight
- 10 h 46 min08:01 – 18:46
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 21 km/haverage daily peakAll months
- Cloud cover
- 79 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+1Europe/Dublin
How the score comes together
- Temperatureweight 50 %64 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 30 %12 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Sunshine hours in Killarney
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 2.9 of 10.8 hours of daylight in Killarney, 27 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Killarney
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 2 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 7).
Minutes until sunburn in October
- Very fair skin
- about 70 min
- Fair skin
- about 90 min
- Light brown skin
- over 2 h
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Killarney: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Killarney has about 16 rainy days with 111 mm of rain in total.
Wind and clouds in Killarney
How breezy and how cloudy Killarney is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Killarney typically peaks at 21 km/h during the day: Beaufort 4, moderate breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 79 % of the sky over Killarney: mostly cloudy, with about 2.9 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Killarney
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
CoolOctober: nights around 9°. A duvet at night and a jumper for the evening.
The coolest nights are in January (4°), the warmest in July (13°). Nights fall below 8 °C on average from November to April, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 4 | 8° | 4° | 1.8 h | 17 | 103 |
| FebruaryFeb | 12 | 9° | 4° | 2.4 h | 15 | 96 |
| MarchMar | 22 | 10° | 4° | 3.5 h | 15 | 90 |
| AprilApr | 41 | 13° | 6° | 5.1 h | 14 | 83 |
| MayMay | 54 | 15° | 8° | 5.7 h | 15 | 93 |
| JuneJun | 65 | 17° | 11° | 5.5 h | 15 | 85 |
| JulyJul | 62 | 18° | 13° | 4.6 h | 15 | 90 |
| AugustAug | 61 | 18° | 13° | 4.7 h | 16 | 96 |
| SeptemberSep | 61 | 17° | 11° | 3.9 h | 14 | 84 |
| OctoberOct | 36 | 14° | 9° | 2.9 h | 16 | 111 |
| NovemberNov | 16 | 11° | 6° | 2.0 h | 17 | 115 |
| DecemberDec | 7 | 9° | 4° | 1.6 h | 17 | 117 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
52.06° N, 9.51° W · 32 m · Europe/Dublin
Best time to visit Killarney
The best time to visit Killarney is from June to September. The wettest month is December with 117 mm of precipitation.
Killarney through the seasons
How the weather changes over the seasons, with averages for each.
Killarney in spring
Mar – May
Poor
- 10–15 °C by day
- 5 h of sun a day
- 44 rainy days in all
Killarney in summer
Jun – Aug
Good
- 17–18 °C by day
- 5 h of sun a day
- 45 rainy days in all
Killarney in autumn
Sep – Nov
Poor
- 11–17 °C by day
- 3 h of sun a day
- 47 rainy days in all
Killarney in winter
Dec – Feb
Poor
- 8–9 °C by day
- 2 h of sun a day
- 49 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Killarney for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Compare two months in Killarney
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
June has the better holiday weather in Killarney: score 65 against 36. In June, days are 3 °C warmer than in October. June has one rainy day fewer. The sun shines 3 hours longer a day in June.
| Month | October | June |
|---|---|---|
| Weather score | 36 | 65better |
| Day high | 14° | 17° |
| Night low | 9° | 11° |
| Sunshine | 2.9 h | 5.5 hbetter |
| Rainy days | 16 | 15better |
| Rainfall | 111 mm | 85 mmbetter |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
All year
12 or more rainy days
Killarney month by month
The typical weather for every month at a glance.
4January8° · 2 h
In January, Killarney is cold: daytime highs average 8 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 2 hours a day. It rains often – on about 17 days, adding up to 103 mm. All in all, January is not an ideal month for a holiday in Killarney.
Killarney in January12February9° · 2 h
In February, Killarney is cold: daytime highs average 9 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 2 hours a day. It rains often – on about 15 days, adding up to 96 mm. All in all, February is not an ideal month for a holiday in Killarney.
Killarney in February22March10° · 4 h
In March, Killarney is cool: daytime highs average 10 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 4 hours a day. It rains often – on about 15 days, adding up to 90 mm. All in all, March is not an ideal month for a holiday in Killarney.
Killarney in March41April13° · 5 h
In April, Killarney is cool: daytime highs average 13 °C, and nights cool down to about 6 °C. Expect around 5 hours of sunshine a day. It rains often – on about 14 days, adding up to 83 mm. All in all, April is a so-so month for a holiday in Killarney.
Killarney in April54May15° · 6 h
In May, Killarney is cool: daytime highs average 15 °C, and nights cool down to about 8 °C. Expect around 6 hours of sunshine a day. It rains often – on about 15 days, adding up to 93 mm. All in all, May is a so-so month for a holiday in Killarney.
Killarney in May65June17° · 6 h
In June, Killarney is mild: daytime highs average 17 °C, and nights cool down to about 11 °C. Expect around 6 hours of sunshine a day. It rains often – on about 15 days, adding up to 85 mm. All in all, June is a good month for a holiday in Killarney.
Killarney in June62July18° · 5 h
In July, Killarney is mild: daytime highs average 18 °C, and nights cool down to about 13 °C. Expect around 5 hours of sunshine a day. It rains often – on about 15 days, adding up to 90 mm. All in all, July is a good month for a holiday in Killarney.
Killarney in July61August18° · 5 h
In August, Killarney is mild: daytime highs average 18 °C, and nights cool down to about 13 °C. Expect around 5 hours of sunshine a day. It rains often – on about 16 days, adding up to 96 mm. All in all, August is a good month for a holiday in Killarney.
Killarney in August61September17° · 4 h
In September, Killarney is mild: daytime highs average 17 °C, and nights cool down to about 11 °C. The sun is scarce, with only about 4 hours a day. Rain is frequent, with about 14 rainy days and 84 mm in total. All in all, September is a good month for a holiday in Killarney.
Killarney in September36October14° · 3 h
In October, Killarney is cool: daytime highs average 14 °C, and nights cool down to about 9 °C. The sun is scarce, with only about 3 hours a day. It rains often – on about 16 days, adding up to 111 mm. All in all, October is not an ideal month for a holiday in Killarney.
Killarney in October16November11° · 2 h
In November, Killarney is cool: daytime highs average 11 °C, and nights cool down to about 6 °C. The sun is scarce, with only about 2 hours a day. It rains often – on about 17 days, adding up to 115 mm. All in all, November is not an ideal month for a holiday in Killarney.
Killarney in November7December9° · 2 h
In December, Killarney is cold: daytime highs average 9 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 2 hours a day. It rains often – on about 17 days, adding up to 117 mm. All in all, December is not an ideal month for a holiday in Killarney.
Killarney in DecemberKillarney compared
Put Killarney side by side with another destination.
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Killarney vs. Tralee
In October the holiday weather in Killarney and Tralee is about equally good (score 36 vs. 35). During the day it is about as warm in Tralee as in Killarney.
| in October | Killarney | Tralee |
|---|---|---|
| Holiday score | 36 | 35 |
| Daytime high | 14° | 14° |
| Sea | – | 14° |
| Sunshine | 3 h | 3 h |
| Rainy days | 16 | 17 |
| Best time | Jun – Sep | Apr – Jun |
Through the year
Ireland in October: the best places
In October, Killarney ranks 5 of 18 destinations in this country.
- Dublin14°14°40
- 2Cork14°14°39
- 3Kilkenny14°39
- 4Waterford14°37
- 5KillarneyThis page14°36
- 6Limerick14°34
- 7Bray14°14°9
- 8Dún Laoghaire14°14°9
Planning a trip to Killarney
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Killarney in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Killarney has its best school-holiday weather during the summer holidays (score 61) and its weakest during the Christmas holidays (score 6).
- 35
Easter holidays
Mar – Apr
Poor
- 12 °C by day
- 4.6 h of sun a day
- 14 rainy days a month
Keep in mind: Frequent rain
- 56
May half-term
May – Jun
Fair
- 15 °C by day
- 5.7 h of sun a day
- 15 rainy days a month
Keep in mind: Frequent rain
- 61
Summer holidays
Jul – Aug
GoodBest holidays
- 18 °C by day
- 4.7 h of sun a day
- 15 rainy days a month
Keep in mind: Frequent rain
- 36
October half-term
Oct
Poor
- 14 °C by day
- 2.9 h of sun a day
- 16 rainy days a month
Keep in mind: Frequent rain
- 6
Christmas holidays
Dec – Jan
Poor
- 9 °C by day
- 1.7 h of sun a day
- 17 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 1 h 15 min
- Distance
- 630 km
- Time zone
- UTC+1
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Killarney
When is the best time to visit Killarney?
The best time to visit Killarney is from June to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Killarney?
July is the warmest month, with average highs of 18 °C and nights around 13 °C. January is the coolest month at 8 °C.
When does it rain most in Killarney?
The wettest month is December with 117 mm of precipitation. The driest month is April with 83 mm.
How many hours of sunshine does Killarney get?
Killarney gets around 1,330 hours of sunshine a year. The sunniest month is May with 5.7 hours a day; in December there are 1.6 hours a day.
What time zone is Killarney in?
Killarney uses the time zone Europe/Dublin: UTC+0 in January and UTC+1 in July.
How long is the flight from London to Killarney?
A nonstop flight from London to Killarney takes about 1 h 15 min, for a straight-line distance of about 630 km.
Which school holidays are best for Killarney?
Killarney has its best school-holiday weather during the summer holidays (score 61) and its weakest during the Christmas holidays (score 6). Holiday ratings (0–100): Easter holidays 35, May half-term 56, Summer holidays 61, October half-term 36, Christmas holidays 6.
Near Killarney
Other destinations close by.
Places with a climate like Killarney
Destinations whose weather through the year is closest to Killarney's – good alternatives.