Feels like11°CWind direction southGusts —Humidity 78%Cloud cover 18%Pressure 1018 hPa
Tuesday
Overcast night
10°💧 None💨 13 km/hH 69%1016 hPa
Feels like6°CWind direction northeastGusts —Humidity 69%Cloud cover 99%Pressure 1016 hPa
Moderate rain
10°💧 None💨 19 km/hH 98%1011 hPa
Feels like7°CWind direction eastGusts —Humidity 98%Cloud cover 100%Pressure 1011 hPa
Moderate rain
16°💧 None💨 24 km/hH 99%1006 hPa
Feels like13°CWind direction southGusts —Humidity 99%Cloud cover 100%Pressure 1006 hPa
Mostly cloudy night
15°💧 None💨 23 km/hH 98%1006 hPa
Feels like12°CWind direction southGusts —Humidity 98%Cloud cover 84%Pressure 1006 hPa
Wednesday
Light rain
14°💧 None💨 14 km/hH 99%1008 hPa
Feels like12°CWind direction southwestGusts —Humidity 99%Cloud cover 99%Pressure 1008 hPa
Overcast night
11°💧 None💨 10 km/hH 99%1011 hPa
Feels like10°CWind direction southGusts —Humidity 99%Cloud cover 98%Pressure 1011 hPa
Light rain
16°💧 None💨 24 km/hH 76%1012 hPa
Feels like12°CWind direction southGusts —Humidity 76%Cloud cover 77%Pressure 1012 hPa
Light rain
14°💧 None💨 22 km/hH 95%1011 hPa
Feels like10°CWind direction southGusts —Humidity 95%Cloud cover 99%Pressure 1011 hPa
Thursday
Moderate rain
13°💧 None💨 23 km/hH 99%1011 hPa
Feels like10°CWind direction southGusts —Humidity 99%Cloud cover 100%Pressure 1011 hPa
Light rain
13°💧 None💨 16 km/hH 100%1012 hPa
Feels like11°CWind direction southwestGusts —Humidity 100%Cloud cover 100%Pressure 1012 hPa
Partly cloudy
16°💧 None💨 19 km/hH 73%1013 hPa
Feels like13°CWind direction southwestGusts —Humidity 73%Cloud cover 59%Pressure 1013 hPa
Overcast night
13°💧 None💨 5 km/hH 92%1012 hPa
Feels like13°CWind direction southwestGusts —Humidity 92%Cloud cover 99%Pressure 1012 hPa
Friday
Moderate rain
13°💧 None💨 15 km/hH 100%1009 hPa
Feels like10°CWind direction eastGusts —Humidity 100%Cloud cover 100%Pressure 1009 hPa
Overcast night
12°💧 None💨 8 km/hH 93%1010 hPa
Feels like10°CWind direction northwestGusts —Humidity 93%Cloud cover 100%Pressure 1010 hPa
Light rain
14°💧 None💨 6 km/hH 84%1010 hPa
Feels like13°CWind direction northeastGusts —Humidity 84%Cloud cover 100%Pressure 1010 hPa
Overcast night
12°💧 None💨 7 km/hH 93%1010 hPa
Feels like12°CWind direction northwestGusts —Humidity 93%Cloud cover 100%Pressure 1010 hPa
Saturday
Overcast night
10°💧 None💨 13 km/hH 89%1012 hPa
Feels like7°CWind direction northwestGusts —Humidity 89%Cloud cover 100%Pressure 1012 hPa
Clear night
9°💧 None💨 8 km/hH 91%1013 hPa
Feels like7°CWind direction westGusts —Humidity 91%Cloud cover 9%Pressure 1013 hPa
Mostly sunny
14°💧 None💨 15 km/hH 66%1015 hPa
Feels like11°CWind direction westGusts —Humidity 66%Cloud cover 31%Pressure 1015 hPa
Overcast night
11°💧 None💨 9 km/hH 84%1017 hPa
Feels like9°CWind direction southwestGusts —Humidity 84%Cloud cover 100%Pressure 1017 hPa
Sunday
Partly cloudy night
9°💧 None💨 8 km/hH 93%1018 hPa
Feels like7°CWind direction southwestGusts —Humidity 93%Cloud cover 60%Pressure 1018 hPa
Overcast night
9°💧 None💨 9 km/hH 97%1018 hPa
Feels like7°CWind direction southwestGusts —Humidity 97%Cloud cover 95%Pressure 1018 hPa
Light rain
13°💧 None💨 14 km/hH 83%1019 hPa
Feels like11°CWind direction southwestGusts —Humidity 83%Cloud cover 94%Pressure 1019 hPa
Light rain
12°💧 None💨 20 km/hH 98%1017 hPa
Feels like9°CWind direction southGusts —Humidity 98%Cloud cover 100%Pressure 1017 hPa
Monday
Overcast night
12°💧 None💨 23 km/hH 94%1015 hPa
Feels like8°CWind direction southwestGusts —Humidity 94%Cloud cover 99%Pressure 1015 hPa
Light rain
13°💧 None💨 18 km/hH 96%1014 hPa
Feels like10°CWind direction southwestGusts —Humidity 96%Cloud cover 100%Pressure 1014 hPa
Overcast
16°💧 None💨 15 km/hH 83%1014 hPa
Feels like14°CWind direction southwestGusts —Humidity 83%Cloud cover 100%Pressure 1014 hPa
Overcast night
13°💧 None💨 13 km/hH 93%1011 hPa
Feels like11°CWind direction southeastGusts —Humidity 93%Cloud cover 100%Pressure 1011 hPa
Tuesday
Overcast night
13°💧 None💨 17 km/hH 97%1007 hPa
Feels like10°CWind direction southeastGusts —Humidity 97%Cloud cover 100%Pressure 1007 hPa
Light rain
15°💧 None💨 23 km/hH 100%1000 hPa
Feels like12°CWind direction southGusts —Humidity 100%Cloud cover 100%Pressure 1000 hPa
Light rain
15°💧 None💨 27 km/hH 100%994 hPa
Feels like12°CWind direction southGusts —Humidity 100%Cloud cover 100%Pressure 994 hPa
Moderate rain
11°💧 None💨 27 km/hH 94%993 hPa
Feels like6°CWind direction southwestGusts —Humidity 94%Cloud cover 73%Pressure 993 hPa
Wednesday
Moderate rain
8°💧 None💨 28 km/hH 96%1000 hPa
Feels like2°CWind direction southwestGusts —Humidity 96%Cloud cover 98%Pressure 1000 hPa
Light rain
8°💧 None💨 28 km/hH 94%1004 hPa
Feels like2°CWind direction southwestGusts —Humidity 94%Cloud cover 98%Pressure 1004 hPa
Light rain
10°💧 None💨 26 km/hH 90%1007 hPa
Feels like5°CWind direction southwestGusts —Humidity 90%Cloud cover 62%Pressure 1007 hPa
In Ystrad Mynach and, more broadly, across Caerphilly:
The rest of the day is expected to be mostly cloudy, with temperatures remaining mild between 16 and 20 degrees Celsius. There is a low chance of light rain, with possible accumulations around 0.1 mm, and the probability of rainfall is about 20%. Winds will be light, coming from the west, with maximum speeds of 6 mph and gusts reaching up to 13 mph. Overall, it should be a fairly dull but mild afternoon, with limited impact from any light rain that may occur.
15-Day Weather Outlook for Ystrad Mynach
TomorrowTomorrowMostly sunny18°/10°💧 None💨 16 km/h
Daytime temperature 17°CFeels like 15°CHumidity 84%Pressure 1026 hPaCloud cover 70%Wind direction northwestGusts 35 km/hSunrise —Sunset —
Thursday, Sep 24Thu Sep 24Overcast17°/8°💧 None💨 16 km/h
Daytime temperature 15°CFeels like 13°CHumidity 83%Pressure 1024 hPaCloud cover 74%Wind direction southGusts 33 km/hSunrise —Sunset —
Friday, Sep 25Fri Sep 25Light rain16°/11°💧 2.6 mm💨 15 km/h
Daytime temperature 16°CFeels like 16°CHumidity 89%Pressure 1019 hPaCloud cover 98%Wind direction southwestGusts 32 km/hSunrise —Sunset —
Saturday, Sep 26Sat Sep 26Mostly sunny16°/9°💧 0.0 mm💨 17 km/h
Daytime temperature 16°CFeels like 12°CHumidity 84%Pressure 1020 hPaCloud cover 25%Wind direction southwestGusts 40 km/hSunrise —Sunset —
Sunday, Sep 27Sun Sep 27Light rain14°/9°💧 2.6 mm💨 20 km/h
Daytime temperature 13°CFeels like 10°CHumidity 90%Pressure 1013 hPaCloud cover 67%Wind direction southwestGusts 46 km/hSunrise —Sunset —
Monday, Sep 28Mon Sep 28Partly cloudy14°/9°💧 1.3 mm💨 16 km/h
Daytime temperature 9°CFeels like 7°CHumidity 83%Pressure 1013 hPaCloud cover 39%Wind direction westGusts 13 km/hSunrise —Sunset —
Tuesday, Sep 29Tue Sep 29Overcast15°/10°💧 17 mm💨 30 km/h
Daytime temperature 13°CFeels like 8°CHumidity 88%Pressure 1007 hPaCloud cover 77%Wind direction southeastGusts —Sunrise —Sunset —
Wednesday, Sep 30Wed Sep 30Moderate rain13°/13°💧 7.0 mm💨 27 km/h
Daytime temperature 13°CFeels like 8°CHumidity 88%Pressure 1006 hPaCloud cover 74%Wind direction southwestGusts —Sunrise —Sunset —
Thursday, Oct 1Thu Oct 1Light rain12°/9°💧 7.5 mm💨 21 km/h
Daytime temperature 9°CFeels like 6°CHumidity 91%Pressure 1011 hPaCloud cover 56%Wind direction southwestGusts —Sunrise —Sunset —
Friday, Oct 2Fri Oct 2Light rain12°/7°💧 3.3 mm💨 22 km/h
Daytime temperature 7°CFeels like 3°CHumidity 86%Pressure 1015 hPaCloud cover 49%Wind direction westGusts —Sunrise —Sunset —
Saturday, Oct 3Sat Oct 3Mostly sunny12°/6°💧 0.4 mm💨 13 km/h
Daytime temperature 6°CFeels like 3°CHumidity 78%Pressure 1022 hPaCloud cover 23%Wind direction westGusts —Sunrise —Sunset —
Sunday, Oct 4Sun Oct 4Overcast14°/9°💧 0.1 mm💨 26 km/h
Daytime temperature 9°CFeels like 6°CHumidity 81%Pressure 1026 hPaCloud cover 100%Wind direction southGusts —Sunrise —Sunset —
Monday, Oct 5Mon Oct 5Light rain15°/13°💧 5.3 mm💨 22 km/h
Daytime temperature 14°CFeels like 11°CHumidity 91%Pressure 1020 hPaCloud cover 74%Wind direction southGusts —Sunrise —Sunset —
Tuesday, Oct 6Tue Oct 6Mostly cloudy14°/10°💧 None💨 8 km/h
Daytime temperature 10°CFeels like 9°CHumidity 88%Pressure 1022 hPaCloud cover 92%Wind direction northwestGusts —Sunrise —Sunset —
Wednesday, Oct 7Wed Oct 7Overcast12°/10°💧 0.0 mm💨 5 km/h
Daytime temperature 10°CFeels like 9°CHumidity 90%Pressure 1018 hPaCloud cover 100%Wind direction northGusts —Sunrise —Sunset —
Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.
Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.
Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.
Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.
Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.
A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.
✓Air quality is acceptable for most people.
❤
UV & HEALTH
UV, Sun & Health Outlook in Ystrad Mynach
Maximum daily UVToday, tomorrow and the following day show the maximum UV index forecast for each day.
0–2 Low3–5 Moderate6–7 High8–10 Very high11+ Extreme
DayMaximum UVAir quality
TodayUV 3,1Moderate😊Good
TomorrowUV 3,2Moderate🙂Fair
ThursdayUV 3,5Moderate🙂Fair
FridayUV 3,4Moderate😐Moderate
SaturdayUV 3,1Moderate🙂Fair
SundayUV 4,0Moderate—Unavailable
MondayUV 5,0Moderate—Unavailable
🩺
Today's weather health advice
Open today's recommendations.
⌄
☀️
Moderate UV risk
Sunglasses and sun protection are recommended for prolonged exposure.
🌬️
Good air quality
Air quality is good and outdoor activities can be enjoyed normally.
💧
Comfortable temperature conditions
Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.
🏃
Good conditions for outdoor activities
Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.
WIND OUTLOOK
Hourly Wind Forecast for Ystrad Mynach
Vertical axis: km/h · Horizontal axis: hours
km/h
Sustained windMax gusts
NIGHT SKY · YSTRAD MYNACH, WALES
Tonight's Stargazing & Shooting Stars
Good observing conditions. Best local viewing window: 3:00 AM–4:00 AM.
66/100Best-hour score
BEST TIME TONIGHT3:00 AM–4:00 AM
Astronomical darkness: 9:06 PM–5:06 AM
☁Cloud cover38%
Real hourly forecast for the best viewing hour.
☾Moonlight87%
Waxing Gibbous · Moon below the horizon at the best viewing hour.
☄Meteor activitySouthern Taurids
Reference ZHR 7 · Radiant 49° high at the best hour.
✦Estimated visible meteors1–2/hour
Local estimate after weather, moonlight and radiant-height adjustments.
Chance ≥1 meteor in 30 min52%
UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.
SEP 20–NOV 20
Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak
ACTIVE NOW
OCT 2–NOV 7
OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak
UPCOMING
OCT 20–DEC 10
Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak
UPCOMING
NOV 6–NOV 30
LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% Moon at peak
UPCOMING
Experimental local observing estimate. Weather values come from the hourly forecast already used on this page.
Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal
conditions and is not the number of meteors a person should expect to see locally.
DISCOVER WEATHER NEARBYWeather in other cities⌄
Explore current conditions and forecasts for other locations.
Forecast data for Ystrad Mynach were last refreshed today at 9:20 PM. The current forecast period extends through 24/09/2026 at 7:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.