Knocklyon

South Dublin, Leinster, Ireland

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Current Weather

13°

Drizzle

Feels Like: 13°

Min: 12°

Max: 16°

The next few hours will be overcast, with today reaching 15°C and dropping to 12°C. The coming days will be drizzle until night.

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Hourly Forecast

13° 13° 13° 13° 13° 13° 14° 14° 15° 15° 15° 15° 15° 14° 14° 13° 13° 12° 12° 12° 12° 12° 13° 13°
60%
60%
60%
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
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4pm
5pm
6pm
7pm
8pm
9pm
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Today
Tomorrow

Daylight Hours

07:25

Sunrise

19:06

Sunset

11 hours 40 minutes of sunlight today

Moon

Waxing Gibbous

18:41

Moonrise

05:37

Moonset

Daily Forecast

Today

12°
16°

Saturday

12°
18°

Sunday

11°
16°

Monday

9°
15°

Tuesday

13°
19°

Wednesday

13°
18°

Thursday

10°
16°

Friday

8°
14°

Saturday

11°
17°

Sunday

14°
18°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

89% Humid
Low High

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Weather in Knocklyon today, September 25, 2026

Knocklyon looks damp on September 25, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly. Wetter spells lean into the morning, when rain odds reach about 60% near 05:00. Skies look heaviest around 05:00, with cover close to 100%.

The temperature range runs from about 12°C up to 16°C. Expect humidity between 70% and 91%, most humid near 06:00. Airflow remains manageable, reaching about 5.7 km/h around 06:00.

Through the afternoon the main story eases from the wetter morning, with rain odds nearer 0% after earlier peaks around 60%. Cloud remains in play near 100% around 13:00, but the heaviest damp risk should be behind you. Visibility stays generally good near 32.0 km on average, though it can drop toward 17.9 km in thicker cloud or showers. The sun rises at 07:25 and sets at 19:06, for a total of 11 hours 40 minutes of sunlight today.

Overall, Knocklyon on September 25, 2026 suits indoor plans or waterproof kit, especially while rain chances stay near 60% and the high sits around 16°C.

Frequently asked questions about weather in Knocklyon

How warm does it get in Knocklyon?

The warmest month in Knocklyon is July, with average high temperatures of 18°C. The average temperature during this period is around 16°C.

How cold does it get in Knocklyon?

The coldest month in Knocklyon is January, with average low temperatures of 3°C. The average temperature during this period is around 5°C.

What is the wettest time of year in Knocklyon?

The wettest month in Knocklyon is September, with an average of 94mm of precipitation.

What is the driest time of year in Knocklyon?

The driest month in Knocklyon is May, with an average of 64mm of precipitation.

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Metric (°C, km/h)