High Heaton Weather and Air Quality – December 2025

Weather

December was generally mild with very little frost. The average temperature was 6.8°C; this is significantly higher than average for the month, which is 4.6°C.  There have been only two warmer Decembers in the last 30 years – 2015 and 2024. The maximum temperature was 12.8°C at 4.30pm on Tuesday 9^th, and the minimum temperature was -1.1°C at 6am on Wednesday 31^st. Rainfall was 95% of the average for December with 56mm being recorded, most of it falling in the first half of the month. The wettest day was Monday 1^st when 9mm fell.  Storm Bram, which arrived on December 9^th, mainly affected the west of the British Isles, but in addition to giving us the month’s warmest day, also brought winds of up to 43mph, the highest wind speed since January.

Air Quality

Air quality was in one of the three ‘good’ categories throughout the month. It was at level three on 1 day, level two on 4 days and at level one (best) on the other 26 days. The average PM2.5 particle concentration was 8.1µg/m³, which is within the WHO target of 10 µg.

Next week I will report on the weather extremes and averages for the whole of 2025 and will reveal whether it was our warmest year on record!  

John Telfer