Live Weather & Forecast
Weather in Merthyr Tydfil
Wales, United Kingdom · Real-time conditions & 3-day outlook
11°C
Feels like 9°C
52°F / Feels 47°F
Patchy rain nearby
Merthyr Tydfil, Wales
🌞 Daytime
Updated: 2026-04-16 10:45
Humidity
87%
Wind
24.1 km/h SW
Wind Gust
28 km/h
Pressure
1018 mb
Visibility
10 km
UV Index
1.6
(Low)
Precipitation
0.03 mm
Cloud Cover
25%
Dew Point
6.6°C
Wind Degree
233°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
195.9 μg/m³
NO₂
6.4 μg/m³
O₃
77 μg/m³
SO₂
2.3 μg/m³
PM 2.5
6.1 μg/m³
PM 10
14.6 μg/m³
Today's Hourly Forecast
24-hour breakdown for Merthyr Tydfil, Wales
12 AM
7°
Patchy rain nearby
1 AM
8°
Patchy rain nearby
2 AM
8°
Light rain shower
3 AM
8°
Light rain shower
4 AM
8°
Patchy rain nearby
5 AM
8°
Patchy rain nearby
6 AM
8°
Patchy rain nearby
7 AM
8°
Patchy rain nearby
8 AM
8°
Patchy rain nearby
9 AM
9°
Patchy rain nearby
10 AM
11°
Patchy rain nearby
11 AM
11°
Patchy rain nearby
12 PM
11°
Patchy rain nearby
1 PM
11°
Patchy rain nearby
2 PM
11°
Patchy rain nearby
3 PM
11°
Patchy rain nearby
4 PM
11°
Overcast
5 PM
11°
Overcast
6 PM
11°
Patchy rain nearby
7 PM
10°
Patchy rain nearby
8 PM
9°
Patchy rain nearby
9 PM
8°
Patchy rain nearby
10 PM
8°
Mist
11 PM
7°
Mist
3-Day Forecast
Daily overview for Merthyr Tydfil, Wales
Today
Patchy rain nearby
11°
/
7°
🌧️ 93% chance of rain
💧 Avg. humidity: 85%
💨 Max wind: 31.3 km/h
🌧️ Total precip: 1.51 mm
☀️ UV Index: 0.8
🌅 Sunrise: 06:15 AM
🌇 Sunset: 08:12 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Patchy rain nearby
12°
/
6°
🌧️ 89% chance of rain
💧 Avg. humidity: 90%
💨 Max wind: 32.8 km/h
🌧️ Total precip: 1.26 mm
☀️ UV Index: 0.4
🌅 Sunrise: 06:13 AM
🌇 Sunset: 08:14 PM
🌙 New Moon
🌑 Moon: 0% lit
Sat, Apr 18
Patchy rain nearby
11°
/
3°
🌧️ 86% chance of rain
💧 Avg. humidity: 79%
💨 Max wind: 20.5 km/h
🌧️ Total precip: 0.16 mm
☀️ UV Index: 0.9
🌅 Sunrise: 06:11 AM
🌇 Sunset: 08:16 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Best Time to Visit Merthyr Tydfil
Plan your trip to Merthyr Tydfil, 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 Merthyr Tydfil?
Current conditions in Merthyr Tydfil: Patchy rain nearby, temperature 11°C, humidity 87%.
What is the best time to visit Merthyr Tydfil?
The best time to visit Merthyr Tydfil is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Merthyr Tydfil?
Merthyr Tydfil is located at approximately 51.7° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Merthyr Tydfil?
The wettest period in Merthyr Tydfil is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Merthyr Tydfil?
For visits to Merthyr Tydfil during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Merthyr Tydfil in?
Merthyr Tydfil is located in United Kingdom, in the state of Wales.
What are the public holidays in Merthyr Tydfil in 2026?
View the 2026 public holidays for Merthyr Tydfil on our Holidays page.
What are the GPS coordinates used for the weather forecast in Merthyr Tydfil?
The weather forecast for Merthyr Tydfil uses coordinates 51.7456, -3.3786.