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Temperature & Rainfall Trends

Note: Trends are based on data recorded at Caerphilly since 2016.

Annual Temperature Trend
Month Average since 2016 Current Month Difference
January 5.7°C 4.0°C (2025) -1.7°C1.7°C Colder than All-Time Average Temperature.
February 6.5°C 5.7°C (2025) -0.8°C0.8°C Colder than All-Time Average Temperature.
March 7.4°C 8.1°C (2025) 0.7°C0.7°C Warmer than All-Time Average Temperature.
April 9.7°C 11.6°C (2025) 1.9°C1.9°C Warmer than All-Time Average Temperature.
May 13.3°C 14.5°C (2025) 1.2°C1.2°C Warmer than All-Time Average Temperature.
June 16.1°C 16.6°C (2025) 0.5°C0.5°C Warmer than All-Time Average Temperature.
July 17.6°C 18.6°C (2025) 1.0°C1°C Warmer than All-Time Average Temperature.
August 16.1°C 17.6°C (2025) 1.5°C1.5°C Warmer than All-Time Average Temperature.
September 14.0°C 14.7°C (2025) 0.7°C0.7°C Warmer than All-Time Average Temperature.
October 11.0°C 11.8°C (2024) 0.8°C0.8°C Warmer than All-Time Average Temperature.
November 8.3°C 8.0°C (2024) -0.3°C0.3°C Colder than All-Time Average Temperature.
December 7.1°C 7.6°C (2024) 0.5°C0.5°C Warmer than All-Time Average Temperature.
Average 12 Month Temperature since 2016: 11.1°C
Current 12 Month Temperature: 11.5°C
Current 12 Month Temperature Trend: 0.4°C0.4°C Warmer than All-Time Average Temperature.

Annual Rainfall Trend
Month Average since 2016 Current Month Difference
January 110.4 mm 153.0 mm (2025) 42.6 mm42.6 mm more than All-Time Average Rainfall.
February 98.5 mm 89.0 mm (2025) -9.5 mm9.5 mm less than All-Time Average Rainfall.
March 82.4 mm 26.4 mm (2025) -56.0 mm56 mm Colder than All-Time Average Temperature.
April 49.6 mm 105.0 mm (2025) 55.4 mm55.4 mm more than All-Time Average Rainfall.
May 60.2 mm 37.6 mm (2025) -22.6 mm22.6 mm less than All-Time Average Rainfall.
June 51.9 mm 88.8 mm (2025) 36.9 mm36.9 mm more than All-Time Average Rainfall.
July 61.0 mm 41.0 mm (2025) -20.0 mm20 mm less than All-Time Average Rainfall.
August 73.6 mm 53.8 mm (2025) -19.8 mm19.8 mm less than All-Time Average Rainfall.
September 80.5 mm 87.4 mm (2025) 6.9 mm6.9 mm more than All-Time Average Rainfall.
October 92.7 mm 152.4 mm (2024) 59.7 mm59.7 mm more than All-Time Average Rainfall.
November 107.5 mm 140.4 mm (2024) 32.9 mm32.9 mm more than All-Time Average Rainfall.
December 116.5 mm 154.4 mm (2024) 37.9 mm37.9 mm more than All-Time Average Rainfall.
Average 12 Month Rainfall since 2016: 984.8 mm
Rainfall for last 12 months: 1,232.8 mm
Current 12 Month Rainfall difference: 248.0 mm248 mm more than All-Time Average Rainfall.
This data is reflective of 12 month trending at the Caerphilly Weather Station location. This is not official scientific data. The weather data presented here is based on data collected since 2016. Script courtesy of  Michael Holden from Relay Weather. Script calculations courtesy of Murry Conarroe of Wildwood Weather.