Newcastle

South Dublin, Leinster, Ireland

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Current Weather

13°

Overcast

Feels Like: 10°

Min: 11°

Max: 15°

The next few hours will be overcast, with today reaching 15°C and dropping to 11°C. The coming days will be drizzle

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Hourly Forecast

13° 13° 14° 14° 14° 15° 14° 13° 13° 12° 12° 12° 11° 11° 11° 11° 11° 11° 11° 11° 11° 11° 12° 13°
14%
14%
14%
16%
16%
16%
11am
12pm
1pm
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5pm
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8pm
9pm
10pm
11pm
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1am
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Today
Tomorrow

Daylight Hours

07:26

Sunrise

19:07

Sunset

11 hours 40 minutes of sunlight today

Moon

Waxing Gibbous

18:42

Moonrise

05:37

Moonset

Daily Forecast

Today

11°
15°

Saturday

11°
17°

Sunday

9°
15°

Monday

8°
15°

Tuesday

10°
17°

Wednesday

11°
15°

Thursday

10°
14°

Friday

10°
17°

Saturday

8°
15°

Sunday

5°
12°

Air Quality Data Available

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UV Index

Avoid being outside
Extreme
Low Extreme

Humidity

85% Humid
Low High

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Weather in Newcastle today, September 25, 2026

Newcastle 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. Cloud leads the morning, peaking close to 98% near 11:00. Sunshine has little room until later in the day.

The temperature range runs from about 11°C up to 15°C. Relative humidity sits between 68% and 87%, reaching its peak around 11:00. Expect gentle winds, highest near 23:00 at 5.6 km/h.

Expect persistent cloud later on, with amounts around 98% by 12:00. Sunshine remains the exception, not the rule. Horizontal visibility holds close to 0.0 km. Sunrise is at 07:26 and sunset at 19:07, giving 11 hours 40 minutes of sunlight today.

The practical takeaway for Newcastle on September 25, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 15°C.

Frequently asked questions about weather in Newcastle

How warm does it get in Newcastle?

The warmest month in Newcastle is July, with average high temperatures of 19°C. The average temperature during this period is around 16°C.

How cold does it get in Newcastle?

The coldest month in Newcastle 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 Newcastle?

The wettest month in Newcastle is September, with an average of 88mm of precipitation.

What is the driest time of year in Newcastle?

The driest month in Newcastle is January, with an average of 63mm of precipitation.

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