Dublin weather in September

Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average

Dublin September weather at a glance

D Challenging 😓

In September, Dublin averages 13.5°C, with typical highs of 16.2°C and lows of 10.7°C. The historical average is 16 wet days and 80% humidity.

Compared with Seoul in September, it is 9.4°C cooler than Seoul, with 3 more wet days.

Dublin September temperature & humidity

Average13.5°CHigh 16.2° / low 10.7°

Humidity80%

Wet days16 days52% of days

Day–night range5.5°

Dublin September rain & wet days

Wet days16 daysHistorical monthly average

Share of wet days52%Not a forecast probability

Pack a light rain jacket, waterproof pouch and quick-dry shoes. Keep an indoor stop available between outdoor activities.

What to wear in Dublin in September

Wear long sleeves with a light jacket or cardigan that is easy to remove during the day. Rain is frequent at roughly 16 days in the month; pack a rain jacket and water-resistant shoes.

DaytimeLong sleeves and a light jacket · average high 16.2°C
Morning & eveningLong sleeves with a jacket or cardigan · average low 10.7°C
FootwearComfortable walking shoes; quick-dry footwear for rainy days.

Useful extras

Light jacket or cardiganLong-sleeve topsRain jacketWater-resistant shoesCompact umbrella

Use the London checklist as a starting point →

Packing essentials

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Travel compression packing pouches
코멧 여행용 압축 파우치 4종 세트 Travel plug adapter
에너자이저 PD 45W 여행용 멀티 어댑터, 화이트 Compact folding umbrella
솔리앤 초경량 UV차단 3단 자동우산 Inflatable travel neck pillow
마이워니 여행용 에어 목베개

Dublin September sunrise & sunset times

2026 September · Local time (Europe/Dublin)

Sunrise on the 15th06:59

Sunset on the 15th19:41

Daylight duration12h 42m

Start, middle and end of the month
Date	Sunrise	Sunset	Daylight
2026-09-01	06:34	20:15	13h 40m
2026-09-15	06:59	19:41	12h 42m
2026-09-30	07:25	19:04	11h 40m

For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.

Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup

Dublin travel updates

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Dublin harbourDublin Port · Camera directory

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Dublin travel essentials

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Best months to visit Dublin

Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.

J F M A M J J A S O N D

ColdHot

September weather by year

September 202413.4°11 wet days, 81% humidity

September 202513.6°20 wet days, 80% humidity

Daily weather in 2025

Daily high and low temperatures; blue labels show precipitation

117°13°1mm

217°11°3.1mm

318°13°20mm

418°11°1.3mm

518°12°

618°14°1.5mm

719°13°26mm

817°11°4mm

917°12°11mm

1016°12°7mm

1115°11°

1216°10°4mm

1315°10°

1418°10°4.7mm

1516°13°1.4mm

1617°11°3.8mm

1720°13°13mm

1820°12°5.6mm

1918°14°17mm

2014°11°6.8mm

2113°8°1.5mm

2214°6°

2314°7°

2416°8°

2516°10°

2616°9°

2714°11°15mm

2815°8°

2917°7°

3018°11°2.7mm

Frequently asked questions

What is Dublin weather like in September?

In September, Dublin averages 13.5°C, with typical highs of 16.2°C and lows of 10.7°C. The historical average is 16 wet days and 80% humidity. Our weather-comfort rating for this month is challenging.

Does it rain a lot in Dublin in September?

There are about 16 wet days in September. Pack a rain jacket and water-resistant shoes.

What should I wear in Dublin in September?

Wear long sleeves with a light jacket or cardigan that is easy to remove during the day. Rain is frequent at roughly 16 days in the month; pack a rain jacket and water-resistant shoes.

What are the best months to visit Dublin?

No months meet the A or B threshold in our temperature-and-precipitation score. Compare the monthly values with your planned activities.

Where can I check Dublin weather in September in real time?

Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.

What time are sunrise and sunset in Dublin in September?

On 2026-09-15, calculated sunrise is 06:59 and sunset is 19:41 in local time (Europe/Dublin). Times vary by date and terrain.

Dublin weather by month

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

More Europe destinations in September

Madrid Seville Granada Mallorca Lisbon Porto Florence Venice Milan Naples Amalfi Positano Sicily Palermo Cinque Terre Nice Lyon Mont Saint-Michel Strasbourg Amsterdam All destinations →

Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations