Killarney weather by month

Check out Killarney weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Killarney (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
46°F maximum daytime temperature in January in Killarney46
46°F maximum daytime temperature in February in Killarney46
50°F maximum daytime temperature in March in Killarney50
54°F maximum daytime temperature in April in Killarney54
57°F maximum daytime temperature in May in Killarney57
63°F maximum daytime temperature in June in Killarney63
64°F maximum daytime temperature in July in Killarney64
64°F maximum daytime temperature in August in Killarney64
61°F maximum daytime temperature in September in Killarney61
57°F maximum daytime temperature in October in Killarney57
50°F maximum daytime temperature in November in Killarney50
48°F maximum daytime temperature in December in Killarney48
Min temperature (night-time)
37°F minimum night-time temperature in January in Killarney37
37°F minimum night-time temperature in February in Killarney37
39°F minimum night-time temperature in March in Killarney39
41°F minimum night-time temperature in April in Killarney41
45°F minimum night-time temperature in May in Killarney45
50°F minimum night-time temperature in June in Killarney50
52°F minimum night-time temperature in July in Killarney52
52°F minimum night-time temperature in August in Killarney52
50°F minimum night-time temperature in September in Killarney50
46°F minimum night-time temperature in October in Killarney46
41°F minimum night-time temperature in November in Killarney41
39°F minimum night-time temperature in December in Killarney39
Heat & Humidity
No heat & humidity in January in Killarney0
No heat & humidity in February in Killarney0
No heat & humidity in March in Killarney0
No heat & humidity in April in Killarney0
No heat & humidity in May in Killarney0
No heat & humidity in June in Killarney0
No heat & humidity in July in Killarney0
No heat & humidity in August in Killarney0
No heat & humidity in September in Killarney0
No heat & humidity in October in Killarney0
No heat & humidity in November in Killarney0
No heat & humidity in December in Killarney0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Killarney

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
8 hours of daylight per day in January in Killarney8
10 hours of daylight per day in February in Killarney10
12 hours of daylight per day in March in Killarney12
14 hours of daylight per day in April in Killarney14
16 hours of daylight per day in May in Killarney16
17 hours of daylight per day in June in Killarney17
16 hours of daylight per day in July in Killarney16
15 hours of daylight per day in August in Killarney15
13 hours of daylight per day in September in Killarney13
11 hours of daylight per day in October in Killarney11
9 hours of daylight per day in November in Killarney9
8 hours of daylight per day in December in Killarney8
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Killarney1
UV (maximum) index 1 (Low) in February in Killarney1
UV (maximum) index 2 (Low) in March in Killarney2
UV (maximum) index 4 (Moderate) in April in Killarney4
UV (maximum) index 5 (Moderate) in May in Killarney5
UV (maximum) index 6 (High) in June in Killarney6
UV (maximum) index 6 (High) in July in Killarney6
UV (maximum) index 5 (Moderate) in August in Killarney5
UV (maximum) index 4 (Moderate) in September in Killarney4
UV (maximum) index 2 (Low) in October in Killarney2
UV (maximum) index 1 (Low) in November in Killarney1
No UV (maximum) index in December in Killarney0

Rainfall in Killarney

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
23 days with some rainfall in January in Killarney23
19 days with some rainfall in February in Killarney19
20 days with some rainfall in March in Killarney20
16 days with some rainfall in April in Killarney16
18 days with some rainfall in May in Killarney18
17 days with some rainfall in June in Killarney17
16 days with some rainfall in July in Killarney16
20 days with some rainfall in August in Killarney20
19 days with some rainfall in September in Killarney19
22 days with some rainfall in October in Killarney22
22 days with some rainfall in November in Killarney22
23 days with some rainfall in December in Killarney23
Average monthly rainfall (inches)
6.3 inches monthly rainfall in January in Killarney6.3
4.6 inches monthly rainfall in February in Killarney4.6
4.4 inches monthly rainfall in March in Killarney4.4
3.0 inches monthly rainfall in April in Killarney3.0
3.3 inches monthly rainfall in May in Killarney3.3
2.9 inches monthly rainfall in June in Killarney2.9
3.0 inches monthly rainfall in July in Killarney3.0
3.8 inches monthly rainfall in August in Killarney3.8
4.6 inches monthly rainfall in September in Killarney4.6
5.5 inches monthly rainfall in October in Killarney5.5
5.9 inches monthly rainfall in November in Killarney5.9
6.5 inches monthly rainfall in December in Killarney6.5

More about Killarney

Killarney by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ireland

  • Explore latest offers on Fred Olsen Cruises in 2026/2027
  • Find last minute deals or early bird discounts
  • Filter offers by price, destination, ship & departure point

Fred OlsenCruise deal finder

The climate guide for Ireland (Killarney) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Killarney?

Killarney has a temperate climate with warm summers and some rainfall in all months.

Killarney weather in January

Expect daytime maximum temperatures of 46°F in Killarney, Ireland in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 23 days with some rainfall and typically 6.3 inches of rainfall in the month.

  • 46°F maximum daytime temperature in January in Killarney46
    46°F max day temperature
  • 2 hours of sunshine per day
  • 23 days with some rainfall in January in Killarney23
    23 days with some rainfall
  • 37°F minimum night-time temperature in January in Killarney37
    37°F min night temperature
  • 8 hours of daylight per day in January in Killarney8
    8 hours of daylight per day
  • No heat & humidity in January in Killarney0
    No heat & humidity
  • 6.3 inches monthly rainfall in January in Killarney6.3
    6.3 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Killarney1
    1 (Low) UV index

Back to months

Killarney weather in February

Expect daytime maximum temperatures of 46°F in Killarney, Ireland in February based on long-term weather averages. There are 2 hours of sunshine per day on average with 19 days with some rainfall and typically 4.6 inches of rainfall in the month.

  • 46°F maximum daytime temperature in February in Killarney46
    46°F max day temperature
  • 2 hours of sunshine per day
  • 19 days with some rainfall in February in Killarney19
    19 days with some rainfall
  • 37°F minimum night-time temperature in February in Killarney37
    37°F min night temperature
  • 10 hours of daylight per day in February in Killarney10
    10 hours of daylight per day
  • No heat & humidity in February in Killarney0
    No heat & humidity
  • 4.6 inches monthly rainfall in February in Killarney4.6
    4.6 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in February in Killarney1
    1 (Low) UV index

Back to months

Killarney weather in March

Expect daytime maximum temperatures of 50°F in Killarney, Ireland in March based on long-term weather averages. There are 3 hours of sunshine per day on average with 20 days with some rainfall and typically 4.4 inches of rainfall in the month.

  • 50°F maximum daytime temperature in March in Killarney50
    50°F max day temperature
  • 3 hours of sunshine per day
  • 20 days with some rainfall in March in Killarney20
    20 days with some rainfall
  • 39°F minimum night-time temperature in March in Killarney39
    39°F min night temperature
  • 12 hours of daylight per day in March in Killarney12
    12 hours of daylight per day
  • No heat & humidity in March in Killarney0
    No heat & humidity
  • 4.4 inches monthly rainfall in March in Killarney4.4
    4.4 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in March in Killarney2
    2 (Low) UV index

Back to months

Killarney weather in April

Expect daytime maximum temperatures of 54°F in Killarney, Ireland in April based on long-term weather averages. There are 5 hours of sunshine per day on average with 16 days with some rainfall and typically 3.0 inches of rainfall in the month.

  • 54°F maximum daytime temperature in April in Killarney54
    54°F max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in April in Killarney16
    16 days with some rainfall
  • 41°F minimum night-time temperature in April in Killarney41
    41°F min night temperature
  • 14 hours of daylight per day in April in Killarney14
    14 hours of daylight per day
  • No heat & humidity in April in Killarney0
    No heat & humidity
  • 3.0 inches monthly rainfall in April in Killarney3.0
    3.0 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in April in Killarney4
    4 (Moderate) UV index

Back to months

Killarney weather in May

Expect daytime maximum temperatures of 57°F in Killarney, Ireland in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 18 days with some rainfall and typically 3.3 inches of rainfall in the month.

  • 57°F maximum daytime temperature in May in Killarney57
    57°F max day temperature
  • 6 hours of sunshine per day
  • 18 days with some rainfall in May in Killarney18
    18 days with some rainfall
  • 45°F minimum night-time temperature in May in Killarney45
    45°F min night temperature
  • 16 hours of daylight per day in May in Killarney16
    16 hours of daylight per day
  • No heat & humidity in May in Killarney0
    No heat & humidity
  • 3.3 inches monthly rainfall in May in Killarney3.3
    3.3 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Killarney5
    5 (Moderate) UV index

Back to months

Killarney weather in June

Expect daytime maximum temperatures of 63°F in Killarney, Ireland in June based on long-term weather averages. There are 5 hours of sunshine per day on average with 17 days with some rainfall and typically 2.9 inches of rainfall in the month.

  • 63°F maximum daytime temperature in June in Killarney63
    63°F max day temperature
  • 5 hours of sunshine per day
  • 17 days with some rainfall in June in Killarney17
    17 days with some rainfall
  • 50°F minimum night-time temperature in June in Killarney50
    50°F min night temperature
  • 17 hours of daylight per day in June in Killarney17
    17 hours of daylight per day
  • No heat & humidity in June in Killarney0
    No heat & humidity
  • 2.9 inches monthly rainfall in June in Killarney2.9
    2.9 inches of monthly rainfall
  • UV (maximum) index 6 (High) in June in Killarney6
    6 (High) UV index

Back to months

Killarney weather in July

Expect daytime maximum temperatures of 64°F in Killarney, Ireland in July based on long-term weather averages. There are 5 hours of sunshine per day on average with 16 days with some rainfall and typically 3.0 inches of rainfall in the month.

  • 64°F maximum daytime temperature in July in Killarney64
    64°F max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in July in Killarney16
    16 days with some rainfall
  • 52°F minimum night-time temperature in July in Killarney52
    52°F min night temperature
  • 16 hours of daylight per day in July in Killarney16
    16 hours of daylight per day
  • No heat & humidity in July in Killarney0
    No heat & humidity
  • 3.0 inches monthly rainfall in July in Killarney3.0
    3.0 inches of monthly rainfall
  • UV (maximum) index 6 (High) in July in Killarney6
    6 (High) UV index

Back to months

Killarney weather in August

Expect daytime maximum temperatures of 64°F in Killarney, Ireland in August based on long-term weather averages. There are 5 hours of sunshine per day on average with 20 days with some rainfall and typically 3.8 inches of rainfall in the month.

  • 64°F maximum daytime temperature in August in Killarney64
    64°F max day temperature
  • 5 hours of sunshine per day
  • 20 days with some rainfall in August in Killarney20
    20 days with some rainfall
  • 52°F minimum night-time temperature in August in Killarney52
    52°F min night temperature
  • 15 hours of daylight per day in August in Killarney15
    15 hours of daylight per day
  • No heat & humidity in August in Killarney0
    No heat & humidity
  • 3.8 inches monthly rainfall in August in Killarney3.8
    3.8 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Killarney5
    5 (Moderate) UV index

Back to months

Killarney weather in September

Expect daytime maximum temperatures of 61°F in Killarney, Ireland in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 19 days with some rainfall and typically 4.6 inches of rainfall in the month.

  • 61°F maximum daytime temperature in September in Killarney61
    61°F max day temperature
  • 4 hours of sunshine per day
  • 19 days with some rainfall in September in Killarney19
    19 days with some rainfall
  • 50°F minimum night-time temperature in September in Killarney50
    50°F min night temperature
  • 13 hours of daylight per day in September in Killarney13
    13 hours of daylight per day
  • No heat & humidity in September in Killarney0
    No heat & humidity
  • 4.6 inches monthly rainfall in September in Killarney4.6
    4.6 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Killarney4
    4 (Moderate) UV index

Back to months

Killarney weather in October

Expect daytime maximum temperatures of 57°F in Killarney, Ireland in October based on long-term weather averages. There are 3 hours of sunshine per day on average with 22 days with some rainfall and typically 5.5 inches of rainfall in the month.

  • 57°F maximum daytime temperature in October in Killarney57
    57°F max day temperature
  • 3 hours of sunshine per day
  • 22 days with some rainfall in October in Killarney22
    22 days with some rainfall
  • 46°F minimum night-time temperature in October in Killarney46
    46°F min night temperature
  • 11 hours of daylight per day in October in Killarney11
    11 hours of daylight per day
  • No heat & humidity in October in Killarney0
    No heat & humidity
  • 5.5 inches monthly rainfall in October in Killarney5.5
    5.5 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in October in Killarney2
    2 (Low) UV index

Back to months

Killarney weather in November

Expect daytime maximum temperatures of 50°F in Killarney, Ireland in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 22 days with some rainfall and typically 5.9 inches of rainfall in the month.

  • 50°F maximum daytime temperature in November in Killarney50
    50°F max day temperature
  • 2 hours of sunshine per day
  • 22 days with some rainfall in November in Killarney22
    22 days with some rainfall
  • 41°F minimum night-time temperature in November in Killarney41
    41°F min night temperature
  • 9 hours of daylight per day in November in Killarney9
    9 hours of daylight per day
  • No heat & humidity in November in Killarney0
    No heat & humidity
  • 5.9 inches monthly rainfall in November in Killarney5.9
    5.9 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in November in Killarney1
    1 (Low) UV index

Back to months

Killarney weather in December

Expect daytime maximum temperatures of 48°F in Killarney, Ireland in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 23 days with some rainfall and typically 6.5 inches of rainfall in the month.

  • 48°F maximum daytime temperature in December in Killarney48
    48°F max day temperature
  • 1 hour of sunshine per day
  • 23 days with some rainfall in December in Killarney23
    23 days with some rainfall
  • 39°F minimum night-time temperature in December in Killarney39
    39°F min night temperature
  • 8 hours of daylight per day in December in Killarney8
    8 hours of daylight per day
  • No heat & humidity in December in Killarney0
    No heat & humidity
  • 6.5 inches monthly rainfall in December in Killarney6.5
    6.5 inches of monthly rainfall
  • No UV (maximum) index in December in Killarney0
    No UV (Maximum) Index UV index

Back to months

More about Killarney

Killarney by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ireland

  • Explore latest offers on Fred Olsen Cruises in 2026/2027
  • Find last minute deals or early bird discounts
  • Filter offers by price, destination, ship & departure point

Fred OlsenCruise deal finder

The climate guide for Ireland (Killarney) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Compare Killarney weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Killarney, County Kerry, Ireland and the UK (London).

Maximum daytime temperature (°F)

Killarney, County Kerry, Ireland
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

Compare more weather >>

Back to top

More about Ireland

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Top ^