
03/10/2025 0 Comments
Weather Summary for September 2025
Weather Summary for September 2025
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Weather Summary for September 2025
High Heaton Weather and Air Quality - September 2025
Weather
Our run of seven consecutive months which were both warmer and drier than the average came to an end with September. The month was both cooler and wetter than the average over the previous 30 years. The average temperature was 13.0°C which is 0.4° below the mean. The first 10 days however saw a continuation of the warm weather of late August and the month’s joint highest temperature of 21.4°C was recorded on Saturday 6th. There was another warm spell from the 17th – 19th when the temperatures were back in the 20s with 21.4°C being again reached on Wednesday 17th. The remainder of the month was cooler, but there was a lot of bright sunshine, which made it feel very warm and pleasant out of the shade. September’s minimum temperature was at 7am on Monday 22nd when it fell to 3.3°C. The much-needed rain arrived this month with a total of 84.3mm which is around 50% more than average. The wettest day was Saturday 20th when 38mm of rain was recorded.
Air Quality
September was an exceptionally good month for air quality. The average PM2.5 particle concentration was only 3.7µg/m3, a value that has only been bettered twice in the last 5 years. It exceeded the WHO recommended level of 10 on only two days with the maximum average value of 14µg on the 27th. The Air Quality Index was in band one on 28 days and in band two on the other two days of the month, both bands being in the ‘good’ category.
John Telfer
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