Live Weather & Forecast
Weather in Castlewellan
Northern Ireland / Tuaisceart Éireann, United Kingdom · Real-time conditions & 3-day outlook
2°C
Feels like -0°C
36°F / Feels 32°F
Clear
Castlewellan, Northern Ireland / Tuaisceart Éireann
🌞 Daytime
Updated: 2026-04-13 06:30
Humidity
87%
Wind
9 km/h SSW
Wind Gust
18.9 km/h
Pressure
1010 mb
Visibility
10 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
0.2°C
Wind Degree
206°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
153.9 μg/m³
NO₂
2.2 μg/m³
O₃
67 μg/m³
SO₂
1.2 μg/m³
PM 2.5
4.8 μg/m³
PM 10
12.2 μg/m³
Today's Hourly Forecast
24-hour breakdown for Castlewellan, Northern Ireland / Tuaisceart Éireann
12 AM
3°
Clear
1 AM
3°
Clear
2 AM
2°
Partly Cloudy
3 AM
2°
Clear
4 AM
2°
Clear
5 AM
2°
Clear
6 AM
2°
Clear
7 AM
2°
Partly Cloudy
8 AM
5°
Sunny
9 AM
7°
Partly Cloudy
10 AM
8°
Sunny
11 AM
8°
Patchy rain nearby
12 PM
8°
Patchy rain nearby
1 PM
9°
Patchy rain nearby
2 PM
9°
Patchy rain nearby
3 PM
9°
Patchy rain nearby
4 PM
9°
Patchy rain nearby
5 PM
9°
Sunny
6 PM
9°
Sunny
7 PM
9°
Patchy rain nearby
8 PM
6°
Sunny
9 PM
5°
Clear
10 PM
5°
Patchy rain nearby
11 PM
4°
Partly Cloudy
3-Day Forecast
Daily overview for Castlewellan, Northern Ireland / Tuaisceart Éireann
Today
Patchy rain nearby
9°
/
2°
🌧️ 87% chance of rain
💧 Avg. humidity: 78%
💨 Max wind: 16.6 km/h
🌧️ Total precip: 0.38 mm
☀️ UV Index: 0.8
🌅 Sunrise: 06:27 AM
🌇 Sunset: 08:22 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Moderate rain
9°
/
4°
🌧️ 85% chance of rain
💧 Avg. humidity: 94%
💨 Max wind: 28.8 km/h
🌧️ Total precip: 7.48 mm
☀️ UV Index: 0.3
🌅 Sunrise: 06:24 AM
🌇 Sunset: 08:24 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Wed, Apr 15
Moderate rain
11°
/
9°
🌧️ 89% chance of rain
💧 Avg. humidity: 94%
💨 Max wind: 28.1 km/h
🌧️ Total precip: 8.2 mm
☀️ UV Index: 0.4
🌅 Sunrise: 06:22 AM
🌇 Sunset: 08:26 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Best Time to Visit Castlewellan
Plan your trip to Castlewellan, United Kingdom around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Castlewellan?
Current conditions in Castlewellan: Clear, temperature 2°C, humidity 87%.
What is the best time to visit Castlewellan?
The best time to visit Castlewellan is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Castlewellan?
Castlewellan is located at approximately 54.3° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Castlewellan?
The wettest period in Castlewellan is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Castlewellan?
For visits to Castlewellan during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Castlewellan in?
Castlewellan is located in United Kingdom, in the state of Northern Ireland / Tuaisceart Éireann.
What are the public holidays in Castlewellan in 2026?
View the 2026 public holidays for Castlewellan on our Holidays page.
What are the GPS coordinates used for the weather forecast in Castlewellan?
The weather forecast for Castlewellan uses coordinates 54.2574, -5.9435.