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Hourly Forecast
Daylight Hours
06:58
Sunrise
19:16
Sunset
Moon
Waxing Crescent
13:33
Moonrise
20:53
Moonset
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Weather in Mountain Ash today, September 16, 2026
Rain features in Mountain Ash on September 16, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. Cloud leads the morning, peaking close to 94% near 10:00. Sunshine has little room until later in the day.
The day peaks near 17°C and cools toward 12°C. Expect humidity between 68% and 87%, most humid near 22:00. Expect gentle winds, highest near 13:00 at 4.7 km/h.
Through the afternoon wet weather remains a factor, with rain chances near 20% around 23:00. Cloud also stays substantial, close to 100% near 15:00. Visibility stays generally good near 34.0 km on average, though it can drop toward 24.9 km in thicker cloud or showers. The sun rises at 06:58 and sets at 19:16, for a total of 12 hours 18 minutes of sunlight today.
The practical takeaway for Mountain Ash on September 16, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 17°C.
Frequently asked questions about weather in Mountain Ash
How warm does it get in Mountain Ash?
The warmest month in Mountain Ash is July, with average high temperatures of 19°C. The average temperature during this period is around 16°C.
How cold does it get in Mountain Ash?
The coldest month in Mountain Ash is January, with average low temperatures of 2°C. The average temperature during this period is around 4°C.
What is the wettest time of year in Mountain Ash?
The wettest month in Mountain Ash is December, with an average of 140mm of precipitation.
What is the driest time of year in Mountain Ash?
The driest month in Mountain Ash is April, with an average of 75mm of precipitation.
