Climate Change Chart of Dublin, Ireland

Overview of climate changes

Changes in sunshine duration

Averaged across calendar months, mean daily sunshine duration had a difference of -0.67 hours/day. This unweighted mean of monthly means summarizes the comparison without establishing a continuous trend or implying the same change in every month. The largest monthly decreases were tied in May / June, each with a difference of -1.14 hours/day. These are mean daily hours, and the tied result marks the strongest monthly decreases in the supplied comparison rather than a uniform reduction throughout the year.

Changes in snowfall

Mean daily snowfall averaged across calendar months shows a difference of +0.11 mm/day in the more recent period. This is an unweighted mean of monthly means, not a day-weighted annual average, and it does not mean that snowfall increased in every month. The largest monthly increase was in March, with a difference of +1.69 mm/day; the largest monthly decrease was in January, with a difference of -0.70 mm/day. These daily mean amounts describe contrasting monthly differences, not monthly totals or a uniform change across the year.

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.18 °C; this is an unweighted mean of monthly means, not a day-weighted annual average, and it describes neither daytime maximum temperatures nor a continuous change between the reference periods. The largest monthly increase was in December, with a difference of +0.79 °C compared with the earlier reference period. By contrast, April had the largest monthly decrease, a difference of -0.64 °C.

Changes in rainfall

Mean daily rainfall averaged across calendar months shows a difference of +0.51 mm/day in the more recent period. This is an unweighted mean of monthly means, rather than a day-weighted annual average; it describes daily mean amounts, not monthly rainfall totals, and does not indicate that every month was wetter. The largest monthly increase occurred in December, where mean daily rainfall had a difference of +1.17 mm/day compared with the earlier reference period. This monthly result identifies the strongest increase in the supplied facts, not a pattern shared by every month.