18.09
fri
fri
Day
57°F
NE 9 mph
Precip.
66%
66%
Night
59°F
NE 9 mph
Precip.
54%
54%
19.09
sat
sat
Day
57°F
E 11 mph
Precip.
22%
22%
Night
48°F
NE 4 mph
Precip.
38%
38%
20.09
sun
sun
Day
54°F
N 5 mph
Precip.
29%
29%
Night
61°F
NE 4 mph
Precip.
43%
43%
21.09
mon
mon
Day
68°F
NE 3 mph
Precip.
6%
6%
Night
57°F
N 4 mph
Precip.
20%
20%
22.09
tue
tue
Day
64°F
N 2 mph
Precip.
19%
19%
Night
55°F
NW 3 mph
Precip.
35%
35%
23.09
wed
wed
Day
64°F
N 5 mph
Precip.
22%
22%
Night
55°F
SW 3 mph
Precip.
26%
26%
24.09
thu
thu
Day
63°F
NW 4 mph
Precip.
8%
8%
Night
54°F
NW 6 mph
Precip.
33%
33%
sea water
temperature
temperature
| Killarney |
monthly
weather
weather
| Killarney |
current
weather
weather
| Killarney |
14 days
forecast
forecast
| Killarney |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 62.0°F. The highest and lowest sea temperatures during the month were 63.1°F and 60.8°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 56.1°F. The highest and lowest sea temperatures during the month were 58.1°F and 53.6°F.
Air temperature in Killarney, °F
Precipitation total in Killarney, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Killarney
Killarney on a weather map
24 Hours Forecast
Killarney
Local time: 10:09
September 18, friday
1200
57°F
NE
9 mph
9 mph
1500
61°F
NE
12 mph
12 mph
1800
59°F
NE
11 mph
11 mph
2100
57°F
NE
9 mph
9 mph
September 19, saturday
0000
59°F
NE
9 mph
9 mph
0300
59°F
E
10 mph
10 mph
0600
55°F
E
9 mph
9 mph
0900
55°F
E
7 mph
7 mph
