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Weather in Castletroy, Ireland 🇮🇪

Current Weather in Castletroy

Sunny
20°C
Feels like 18°C. Sunny.
🌬️ 5 km/h ESE
💧 47% Humidity
🧭 1026 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 4.6
🌡️ Dew Point: 8°C
🌅 Sunrise: 06:30 AM
🌇 Sunset: 08:43 PM
Map Overlays:

Right now Castletroy is 20°C with sunny, feeling like 18°C. Humidity is 47% with winds around 5 km/h, and the UV index is 5 (moderate). In the days ahead, expect temperatures in Castletroy from about 8°C to 21°C.

Hourly Forecast for Castletroy

15:00
Sunny
20°
1%
16:00
Sunny
20°
1%
17:00
Sunny
20°
1%
18:00
Sunny
20°
1%
19:00
Sunny
19°
3%
20:00
Sunny
17°
3%
21:00
Clear
14°
4%
22:00
Clear
12°
6%
23:00
Clear
11°
9%
00:00
Clear
10°
11%
01:00
Clear
13%
02:00
Clear
13%
03:00
Clear
13%
04:00
Clear
13%
05:00
Clear
13%
06:00
Overcast
25%
07:00
Overcast
23%
08:00
Overcast
11°
19%
09:00
Overcast
13°
15%
10:00
Overcast
16°
13%
11:00
Overcast
18°
12%
12:00
Overcast
19°
12%
13:00
Overcast
21°
11%
14:00
Overcast
21°
10%

14-Day Forecast for Castletroy

Sun, Aug 23
Sunny Sunny
20° /
Mon, Aug 24
Overcast Overcast
21° /
Tue, Aug 25
Overcast Overcast
19° / 11°
Wed, Aug 26
Fog Fog
22° / 13°
Thu, Aug 27
Light rain shower Light rain shower
19° / 14°
Fri, Aug 28
Patchy rain nearby Patchy rain nearby
19° / 13°
Sat, Aug 29
Patchy rain nearby Patchy rain nearby
18° / 12°
Sun, Aug 30
Fog Fog
19° / 12°
Mon, Aug 31
Patchy rain nearby Patchy rain nearby
17° / 11°
Tue, Sep 01
Patchy rain nearby Patchy rain nearby
16° / 10°
Wed, Sep 02
Patchy rain nearby Patchy rain nearby
16° / 10°
Thu, Sep 03
Light rain shower Light rain shower
15° / 10°
Fri, Sep 04
Patchy rain nearby Patchy rain nearby
15° / 10°
Sat, Sep 05
Patchy rain nearby Patchy rain nearby
17° /

Additional Forecasts for Castletroy

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 160.0 μg/m³
O₃ (Ozone) 74.0 μg/m³
NO₂ (Nitrogen Dioxide) 1.4 μg/m³
SO₂ (Sulphur Dioxide) 0.5 μg/m³
PM2.5 (Fine particles) 5.6 μg/m³
PM10 (Coarse particles) 7.9 μg/m³

Historical Weather

Weather Forecasts for Other Cities in Ireland

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Weather in Ireland ›

Best Time to Be Outside in Castletroy Today

The most comfortable window in Castletroy today looks like 15:00 to 18:00, when it is around 20°C. It should stay dry through that window. No significant rain is expected in the next several hours.

Frequently Asked Questions about Weather in Castletroy

What is the temperature in Castletroy right now?

Castletroy is sitting at 20°C (67°F) right now, sunny (feels like 18°C).

What's the weather like in Castletroy right now?

Conditions in Castletroy right now: Sunny, humidity 47%, wind 5 km/h ESE.

What is today's forecast for Castletroy?

Today in Castletroy: high 20°C, low 8°C, sunny. Chance of rain: 5%.

What is the 7-day weather forecast for Castletroy?

Daily highs and lows for Castletroy:

  • 2026-08-23: 20°C / 8°C
  • 2026-08-24: 21°C / 8°C
  • 2026-08-25: 19°C / 11°C
  • 2026-08-26: 22°C / 13°C
  • 2026-08-27: 19°C / 14°C
  • 2026-08-28: 19°C / 13°C
  • 2026-08-29: 18°C / 12°C
Is it going to rain in Castletroy today?

There is a 5% chance of rain in Castletroy today.

What is the wind speed in Castletroy right now?

Wind in Castletroy is currently 5 km/h (3 mph) from the ESE.

What is the UV index in Castletroy right now?

The UV index in Castletroy is currently 4.6 (moderate). Sun protection is recommended when the index is 3 or higher.

Weather forecasts for other major cities in 🇮🇪 Ireland: Dublin · South Dublin · Cork · Limerick · Galway · Tallaght · Swords · Drogheda · Bray · Dún Laoghaire · Ennis · Navan · Carlow · Tralee · Droichead Nua · Sandyford · Balbriggan · Kilkenny · Athlone · Naas · Celbridge · Wexford · Finglas · Letterkenny · Sligo · Ballincollig · Greystones · Rathfarnham · An Muileann gCearr · Cluain Meala · Malahide · Blanchardstown · Carrigaline · Leixlip · Donaghmede · Lucan · Kilquade · Castletroy · Knocklyon · Maynooth · Clondalkin · Cill Airne · Shankill · Wicklow
Weather forecasts for cities in neighbouring countries: 🇬🇧 United Kingdom: London · Birmingham · Liverpool · Glasgow · Sheffield · Leeds