Live Weather & Forecast
Weather in Ystradgynlais
Cymru / Wales, United Kingdom · Real-time conditions & 3-day outlook
11°C
Feels like 8°C
52°F / Feels 46°F
Mist
Ystradgynlais, Cymru / Wales
🌙 Nighttime
Updated: 2026-04-16 00:30
Humidity
94%
Wind
30.6 km/h SW
Wind Gust
43.8 km/h
Pressure
1012 mb
Visibility
6 km
UV Index
0
(Low)
Precipitation
0.32 mm
Cloud Cover
100%
Dew Point
8.3°C
Wind Degree
219°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
148.9 μg/m³
NO₂
2 μg/m³
O₃
88 μg/m³
SO₂
1.1 μg/m³
PM 2.5
5.9 μg/m³
PM 10
18.6 μg/m³
Today's Hourly Forecast
24-hour breakdown for Ystradgynlais, Cymru / Wales
12 AM
9°
Light rain shower
1 AM
11°
Mist
2 AM
9°
Light rain shower
3 AM
9°
Light rain shower
4 AM
9°
Patchy rain nearby
5 AM
8°
Patchy rain nearby
6 AM
8°
Patchy rain nearby
7 AM
8°
Patchy rain nearby
8 AM
9°
Patchy rain nearby
9 AM
10°
Patchy rain nearby
10 AM
11°
Patchy rain nearby
11 AM
11°
Patchy rain nearby
12 PM
12°
Patchy rain nearby
1 PM
12°
Patchy rain nearby
2 PM
12°
Patchy rain nearby
3 PM
12°
Patchy rain nearby
4 PM
12°
Overcast
5 PM
12°
Patchy rain nearby
6 PM
11°
Patchy rain nearby
7 PM
10°
Light rain shower
8 PM
9°
Patchy rain nearby
9 PM
8°
Mist
10 PM
8°
Mist
11 PM
8°
Mist
3-Day Forecast
Daily overview for Ystradgynlais, Cymru / Wales
Today
Patchy rain nearby
12°
/
8°
🌧️ 96% chance of rain
💧 Avg. humidity: 88%
💨 Max wind: 31.3 km/h
🌧️ Total precip: 2.68 mm
☀️ UV Index: 0.9
🌅 Sunrise: 06:17 AM
🌇 Sunset: 08:15 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Patchy rain nearby
13°
/
7°
🌧️ 86% chance of rain
💧 Avg. humidity: 90%
💨 Max wind: 27.7 km/h
🌧️ Total precip: 2.69 mm
☀️ UV Index: 0.8
🌅 Sunrise: 06:15 AM
🌇 Sunset: 08:16 PM
🌙 New Moon
🌑 Moon: 0% lit
Sat, Apr 18
Patchy rain nearby
12°
/
4°
🌧️ 84% chance of rain
💧 Avg. humidity: 83%
💨 Max wind: 18.7 km/h
🌧️ Total precip: 0.58 mm
☀️ UV Index: 1
🌅 Sunrise: 06:13 AM
🌇 Sunset: 08:18 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Best Time to Visit Ystradgynlais
Plan your trip to Ystradgynlais, 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 Ystradgynlais?
Current conditions in Ystradgynlais: Mist, temperature 11°C, humidity 94%.
What is the best time to visit Ystradgynlais?
The best time to visit Ystradgynlais is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Ystradgynlais?
Ystradgynlais is located at approximately 51.8° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Ystradgynlais?
The wettest period in Ystradgynlais is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Ystradgynlais?
For visits to Ystradgynlais during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Ystradgynlais in?
Ystradgynlais is located in United Kingdom, in the state of Cymru / Wales.
What are the public holidays in Ystradgynlais in 2026?
View the 2026 public holidays for Ystradgynlais on our Holidays page.
What are the GPS coordinates used for the weather forecast in Ystradgynlais?
The weather forecast for Ystradgynlais uses coordinates 51.7773, -3.7585.