Live Weather & Forecast
Weather in Mountain Ash
Cymru / Wales, United Kingdom · Real-time conditions & 3-day outlook
11°C
Feels like 8°C
51°F / Feels 47°F
Patchy rain nearby
Mountain Ash, Cymru / Wales
🌞 Daytime
Updated: 2026-04-18 15:45
Humidity
66%
Wind
18.7 km/h NW
Wind Gust
23.4 km/h
Pressure
1024 mb
Visibility
10 km
UV Index
2.2
(Low)
Precipitation
0.04 mm
Cloud Cover
100%
Dew Point
4.4°C
Wind Degree
316°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
153.9 μg/m³
NO₂
2.8 μg/m³
O₃
82 μg/m³
SO₂
1.4 μg/m³
PM 2.5
3.1 μg/m³
PM 10
6.6 μg/m³
Today's Hourly Forecast
24-hour breakdown for Mountain Ash, Cymru / Wales
12 AM
7°
Patchy rain nearby
1 AM
7°
Patchy rain nearby
2 AM
7°
Patchy rain nearby
3 AM
7°
Patchy rain nearby
4 AM
7°
Patchy rain nearby
5 AM
6°
Patchy rain nearby
6 AM
6°
Patchy rain nearby
7 AM
6°
Patchy rain nearby
8 AM
7°
Patchy rain nearby
9 AM
7°
Patchy rain nearby
10 AM
8°
Patchy rain nearby
11 AM
9°
Patchy rain nearby
12 PM
9°
Patchy rain nearby
1 PM
9°
Patchy rain nearby
2 PM
10°
Patchy rain nearby
3 PM
11°
Patchy rain nearby
4 PM
10°
Patchy rain nearby
5 PM
10°
Patchy rain nearby
6 PM
10°
Sunny
7 PM
9°
Sunny
8 PM
7°
Sunny
9 PM
6°
Clear
10 PM
5°
Clear
11 PM
4°
Clear
3-Day Forecast
Daily overview for Mountain Ash, Cymru / Wales
Today
Patchy rain nearby
11°
/
4°
🌧️ 86% chance of rain
💧 Avg. humidity: 81%
💨 Max wind: 21.2 km/h
🌧️ Total precip: 0.41 mm
☀️ UV Index: 2.6
🌅 Sunrise: 06:11 AM
🌇 Sunset: 08:16 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Sun, Apr 19
Patchy rain nearby
12°
/
3°
🌧️ 0% chance of rain
💧 Avg. humidity: 72%
💨 Max wind: 9 km/h
🌧️ Total precip: 0.09 mm
☀️ UV Index: 4.4
🌅 Sunrise: 06:09 AM
🌇 Sunset: 08:18 PM
🌙 Waxing Crescent
🌑 Moon: 3% lit
Mon, Apr 20
Patchy rain nearby
10°
/
3°
🌧️ 86% chance of rain
💧 Avg. humidity: 72%
💨 Max wind: 20.9 km/h
🌧️ Total precip: 0.11 mm
☀️ UV Index: 3.8
🌅 Sunrise: 06:07 AM
🌇 Sunset: 08:19 PM
🌙 Waxing Crescent
🌑 Moon: 9% lit
Best Time to Visit Mountain Ash
Plan your trip to Mountain Ash, 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 Mountain Ash?
Current conditions in Mountain Ash: Patchy rain nearby, temperature 11°C, humidity 66%.
What is the best time to visit Mountain Ash?
The best time to visit Mountain Ash is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Mountain Ash?
Mountain Ash is located at approximately 51.7° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Mountain Ash?
The wettest period in Mountain Ash is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Mountain Ash?
For visits to Mountain Ash during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Mountain Ash in?
Mountain Ash is located in United Kingdom, in the state of Cymru / Wales.
What are the public holidays in Mountain Ash in 2026?
View the 2026 public holidays for Mountain Ash on our Holidays page.
What are the GPS coordinates used for the weather forecast in Mountain Ash?
The weather forecast for Mountain Ash uses coordinates 51.6821, -3.3764.