December 2025 was warmer than normal in temperatures, with above-average precipitation.
The mean temperature of the month was 21.3°C which is 1.6°C above the long-term normal for December, and this goes on record as the seventh highest mean temperature for December since 1902. This is the same as in December 2021. Note that the highest mean monthly temperature for December was 22.5°C recorded in 2001.
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Monthly Weather Summary - December 2025
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