CAP A2 State of Climate
Appendix 2 State of Climate
Source Met Eireann
Understanding how climate change is impacting on weather patterns is vital in identifying action pathways and assessing the impact of actions in reversing the impacts of climate change. The table here uses data from Met Eireann’s Phoenix Park weather station from 2016 to the present. Analysis of this data shows both the slow onset impacts of climate change over time on weather patterns and increasing intensity and frequency of extreme weather events.
Year | Phoenix Park Station | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sept | Oct | Nov | Dec |
2016 | Statement (Nation-wide) | Was mostly dominated by the North Atlantic jet stream, with Storm Gertrude a notable feature. LTA for temperature were normal and above average for rainfall. | After a wet and windy January, the very mobile unsettled pattern continued for most of February, albeit colder. | Storm Jake and Katie were named. Most places reported below their LTA for rainfall and mean air temperatures. | Changeable and unsettled early on, but settled for the second half of the month. LTA rainfall values were variable and all stations reported below average air temperatures. | Changeable with some clear spells. Most LTA rainfall values were below and all stations reported average or above average mean temperatures. | Two-thirds of Long-Term Average (LTA) rainfall values were above average. All stations reported above average mean air temperatures and LTA sunshine values were variable. | LTA rainfall totals were variable, half of monthly mean air temperatures were above average and nearly all LTA sunshine totals were below average. | Two-thirds of stations reported below LTA for rainfall, nearly all stations were above mean temperatures and sunshine totals were mainly below average. | The majority of stations reported above LTA for rainfall and below average for sunshine, while all stations were average or above average for temperature. | Was mainly influenced by anticyclonic conditions allowing for predominantly dry settled conditions and no strong gales or storms reported. | Was dominated by anticyclonic conditions and the Azores high. Most stations reported below their LTA for rainfall and all stations were below their LTAs for temperatures. | Most stations reported below LTA for rainfall and above for temperatures |
Rain Volume (mm) | 105.4 | 59.3 | 29.1 | 67.3 | 50.2 | 84.2 | 39.7 | 73.6 | 76 | 36.2 | 37.8 | 46.1 | |
% of Rainfall LTA | 161 | 116 | 54 | 128 | 82 | 122 | 72 | 101 | 127 | 46 | 50 | 60 | |
Mean Temp (°C) | 6.2 | 5.3 | 6.9 | 7.6 | 12.3 | 14.9 | 16.6 | 16.3 | 14.9 | 11.3 | 6 | 6.9 | |
Difference Avg (°C) | 1.2 | 0.1 | 0 | -0.9 | 1.3 | 1.1 | 0.8 | 0.8 | 1.5 | 0.9 | -1.1 | 1.6 | |
2017 | Statement (Nation-wide) | Was mild and dry. All rainfall totals were below their LTA and above their LTA for temperatures. | Was mild. Half of the stations reported monthly rainfall totals below their LTA and air temperatures across the country were all above their LTA. Storms Ewan and Doris affected Ireland. | Mild, unsettled and wet. Most rainfall totals and temperatures were above their LTA. | Mild and dry everywhere. All rainfall totals were below their LTA with temperatures near or above their LTA. | Warm, dry and sunny. Most rainfall totals were below average. Mean air temperatures were above everywhere and most available sunshine totals were above their LTA. | Changeable, unsettled and dull. The majority of stations reported above average monthly rainfall totals and above average mean air temperatures, while two-thirds of available sunshine totals were below their LTA. | Changeable with rain or showers most days. Most rainfall and sunshine totals were above average while the majority of air temperatures were below their LTA. | Cool and dull. LTA rainfall values were variable, all air temperatures were below average and nearly all sunshine totals were below. | Cool & wet, with storm ‘Aileen’ tracking eastwards across Ireland mid-month. LTA rainfall values were above at most stations. Air temperatures were average or below average while over half of the sunshine totals were average or above average. | Brought the memorable ex-Hurricane Ophelia and then Storm Brian with violent storm force winds and strong gales reported at many stations throughout the country. | Was changeable, cool and unsettled. Below average monthly rainfall and mean temperatures at most locations with above average sunshine totals. | Was unsettled and mild. Storm Dylan was the main feature with monthly rainfall and temperature totals above average and sunshine totals below average. |
Rain Volume (mm) | 23.2 | 62.1 | 75.2 | 11.4 | 47.7 | 95.6 | 52.9 | 80.4 | 88.9 | 49.6 | 78.3 | 64.8 | |
% of Rainfall LTA | 36 | 121 | 139 | 22 | 78 | 138 | 96 | 110 | 148 | 62 | 104 | 84 | |
Mean temp (°C) | 6 | 6.7 | 8.7 | 9.4 | 13 | 15.4 | 16.1 | 15.1 | 13.3 | 11.9 | 6.7 | 5.3 | |
Difference Avg (°C) | 1 | 1.5 | 1.8 | 0.9 | 2 | 1.6 | 0.3 | -0.4 | -0.1 | 1.5 | -0.4 | 0 | |
2018 | Statement (Nation-wide) | Was wetter than normal with near or slightly above LTA for temperatures and rainfall. Fog was a significant feature, particularly in the West and South. | Was cold, sunny and dry. Nearly all rainfall totals were below their LTA and air temperatures across the country were below their LTA. | Storm Emma yielded widespread snow, ice and low temperatures. Most rainfall totals and all temperatures were below their LTA. | Unsettled, dull and wet. The majority of monthly rainfall totals and air temperatures were above their LTA and most available sunshine totals were below their LTA. | Mostly warm, dry and sunny. Nearly all rainfall totals were below their LTA. All mean temperatures and all available sunshine totals were above their LTA. | Heatwave conditions experienced in many places. Air temperatures and sunshine values were above average everywhere while rainfall totals were below their LTA. Storm Hector passed by the Northwest on the 13th & 14th. | Dry & warm with drought conditions. All monthly rainfall totals were below average, while all mean air temperatures and most of the sunshine totals were above their LTA. | Cooler & wetter in the North & West, drier & warmer elsewhere. Most monthly rainfall totals were below their LTA, mean air temperatures were variable and all stations had below average Sunshine totals. | Dry & Cool with two named storms, Ali & Bronagh. Rainfall totals were below average nearly everywhere. Mean temperatures were below average and sunshine totals were variable. | Was a cool, dry month with above average sunshine values and the major weather event that month being Storm Callum which led to widespread heavy rain on the 12th and 13th. | Was dull and wet, with above average rainfall and monthly mean temperatures in most places. Storm Diana was a feature on the 28th with the highest recorded gust of 62 knots (115 km/h) at both Casement (its highest in 27 years) and at Roche’s Point (its highest in 13 years). | Was mild and unsettled with Storm Deirdre affecting Ireland. Many stations were near normal for rainfall totals but above in the South. Air temperatures were above LTA and sunshine totals below. |
Rain Volume (mm) | 85 | 31.4 | 99.7 | 75 | 25.6 | 4.1 | 30.5 | 40.8 | 46.1 | 44.5 | 121.6 | 80.7 | |
% of Rainfall LTA | 130 | 61 | 185 | 142 | 42 | 6 | 56 | 56 | 77 | 56 | 161 | 105 | |
Mean temp (°C) | 5.3 | 3.9 | 5 | 9.1 | 12.7 | 15.8 | 17.2 | 16.3 | 13.2 | 10.2 | 8.6 | 7.9 | |
Difference Avg (°C) | 0.3 | -1.3 | -1.9 | 0.6 | 1.7 | 2 | 1.4 | 0.8 | -0.2 | -0.2 | 1.5 | 2.6 | |
2019 | Statement (Nation-wide) | Was mild and dry with a cold finish. Rainfall LTA were below everywhere and above average for temperatures. | Was very mild and mostly dry. Rainfall totals were below their LTA and air temperatures across the country were above their LTA. Storm Erik affected Ireland. | Storms Freya and Gareth were named. Unsettled and rainfall totals and temperatures were above their LTA. | Above average temperatures and rainfall for most stations with Storm Hannah bringing storm force winds this month. | Mostly dry with near average temperatures. Rainfall totals were nearly all below their LTA. Mean temperatures were variable and it was sunniest in the Southwest. | Cool and unsettled overall with a warm finish. The majority of monthly rainfall totals were above average, mean air temperatures were below and sunshine values were variable. | Warm overall, drier and sunnier in the South and East. The majority of monthly rainfall totals were below average while all mean air temperatures were above average and sunshine totals were variable. | Mild and Unsettled. Above average rainfall totals, air temperatures and sunshine totals in most places. | Mild, wet, and sunny. Above average rainfall totals and mean temperatures for most, while sunshine totals were above average everywhere. | Was mainly sunny and cool but wet in the South, ex-hurricane Storm Lorenzo brought unsettled weather at the start of the month. | Was very wet and dull in the East and cool everywhere. Most monthly rainfall totals were above their LTAs and all stations had below average monthly mean temperatures. | Was mild, bright and breezy. Storm Atiyah on the 8th and 9th and Storm Elsa on the 18th brought windy, wet conditions and coastal flooding. Monthly rainfall totals varied, temperature and sunshine totals were above LTA. |
Rain Volume (mm) | 27.1 | 19.9 | 87.8 | 71.5 | 34.8 | 74.8 | 49.2 | 68.7 | 94.2 | 72.7 | 155.1 | 51.8 | |
% of Rainfall LTA | 42 | 39 | 163 | 136 | 57 | 108 | 90 | 94 | 157 | 92 | 205 | 67 | |
Mean temp (°C) | 5.9 | 8 | 8.2 | 8.9 | 11.6 | 13.5 | 17 | 16.4 | 14 | 9.9 | 6.6 | 6.4 | |
Difference Avg (°C) | 0.9 | 2.8 | 1.3 | 0.4 | 0.6 | -0.3 | 1.2 | 0.9 | 0.6 | -0.5 | -0.5 | 1.1 | |
2020 | Statement (Nation-wide) | Was mild and dry overall. Storm Brendan, brought storm force winds including thunderstorms in the West and the East. Rainfall LTA were below average in most places and temperatures were above average everywhere. | Was exceptionally wet and very windy. All rainfall totals were above their LTA and nearly all mean air temperatures were above their LTA. Storms Ciara, Dennis and Jorge affected Ireland. | Storm Jorge was named. This month was cool, sunny and dry in the East. Rainfall totals and temperatures were below their LTA nearly everywhere. | Very dry, mild and sunny. Rainfall totals were below average everywhere, all air temperatures across the country and all available sunshine totals were above their LTA. | Very dry, warm and sunny. Rainfall totals were below average but storm Arthur brought widespread rain late in the month. All mean temperatures and all available sunshine totals were above their LTA. | Changeable, dull and windy. The majority of monthly rainfall totals were above average. Temperatures were near average, while sunshine values were below average everywhere. | Cool and wet. All monthly rainfall totals were above average while mean air temperatures and sunshine totals were below. | Warm, wet, and stormy. Storm Ellen and Francis brought heavy rainfall and gales. Rainfall and air temperatures were above average nearly everywhere while sunshine totals were below their LTA. | Mostly warm, cool final third. Rainfall totals were mostly below average, with the majority of air temperatures near or above average, while sunshine totals were above average everywhere. | Was predominantly cool, wet, and windy and storm force winds were reported during Storm Aiden which developed towards the latter stages of the month. Storm Aiden, on Saturday 31 October 2020, is the last time storm force winds were observed across Ireland. | Was mild, wet in the West and dominated by an Atlantic regime, with rainfall above average in most places and mean temperatures above average everywhere. | Was cool, wet and windy. Storm Bella brought windy and wet conditions on the 26th and 27th.. Rainfall and sunshine totals were above their LTA and temperature was below in most places. |
Rain Volume (mm) | 39.6 | 141.5 | 30.7 | 13.8 | 8.1 | 70.1 | 99.6 | 89.2 | 56.4 | 80.5 | 55.5 | 79.4 | |
% of Rainfall LTA | 61 | 276 | 57 | 26 | 13 | 101 | 181 | 122 | 94 | 101 | 73 | 103 | |
Mean temp (°C) | 6.5 | 6.2 | 6.9 | 10 | 12.5 | 14.4 | 15.4 | 15.9 | 14 | 10.2 | 8.7 | 5 | |
Difference Avg (°C) | 1.5 | 1 | 0 | 1.5 | 1.5 | 0.6 | -0.4 | 0.4 | 0.6 | -0.2 | 1.6 | -0.3 | |
2021 | Statement (Nation-wide) | Was cold and wet. Rainfall was above average in most places and temperatures were below average everywhere. | Was mild overall and wet, especially in the South. Rainfall totals were above their LTA and nearly all mean air temperatures were above their LTA. Storm Darcy affected Ireland. | Mild and settled. Rainfall totals were below their LTA and air temperatures were above their LTA. | Very dry, cool and sunny. All rainfall totals and nearly all air temperatures were below their LTA while all available sunshine totals were above their LTA. | Cool and wet everywhere. All rainfall and sunshine totals were above their LTA and all mean temperatures were below their LTA. | Dry everywhere, sunny and warm in the South and East. Rainfall totals were below average everywhere. The majority of mean air temperatures were above average and nearly all sunshine totals were above average. | Hot, sunny with widespread heatwaves. Rainfall totals were variable and all mean air temperatures and sunshine totals were above average. | Mild and changeable, dry finish. Most monthly rainfall totals were below their LTA, nearly all mean temperatures were above, and sunshine values were variable. | Warm, dry for most and dull; Rainfall: Below average in most places, driest in the East; Temperature: Above average everywhere, record breaking in places | Mild. Wet, especially in the South and West. Sunny in the South and East; Rainfall: Above average in most places, wettest in the South and West; Temperature: Above average everywhere | Mild and dry for most of the month. Sunny in the South; Rainfall: Below average nearly everywhere, driest in the East; Temperature: Above average everywhere | Mild, changeable and windy at times; Rainfall: Above average in most places, wettest in the South and East; Temperature: Above average everywhere |
Rain Volume (mm) | 115.6 | 61.7 | 34.2 | 16.2 | 96.9 | 14.2 | 83.6 | 51.2 | 35.2 | 73.5 | 17.5 | 83.7 | |
% of Rainfall LTA | 177 | 120 | 63 | 31 | 158 | 21 | 152 | 70 | 59 | 93 | 23 | 109 | |
Mean temp (°C) | 4 | 6.6 | 8.1 | 7.2 | 10.1 | 14.9 | 17.2 | 15.8 | 15.8 | 12.4 | 8.1 | 7 | |
Difference Avg (°C) | -0.1 | 1.4 | 1.2 | -1.3 | -0.9 | 1.1 | 1.4 | 0.3 | 2.4 | 2 | 1 | 1.7 | |
2022 | Statement (Nation-wide) | Was mild and very dry. Rainfall was below the Long-term average. Temperatures were above average | Violent storm force winds reported during storm Eunice. Was mild, wet and windy, Rainfall was above the long term average. Temperatures were above average. | March was mild, dry and very sunny. Rainfall: Below average nearly everywhere, driest in the Northwest; and Temperatures were above average | Was Mild, dry and sunny overall; Rainfall: Below average in most places, driest in the East; Temperature: Above average at most stations, warmest in the West | Very mild, dry in the South, wet in the Northwest; Rainfall: Below average in the South, above average in the Northwest; Temperature: Significantly above average everywhere, especially warm at night | Wetter, cooler and cloudier in the West. Drier, warmer and sunnier in the East; Rainfall: Above average in most places, highest in the West and Southwest. Below average in the East; Temperature: Mostly above average, below average at some stations in the West | Warm and dry with record high maximum daily temperatures reported; Rainfall: Below average everywhere, lowest in the South; Temperature: Above average everywhere, record high maximum daily temperatures reported at nine stations | Dry, sunny and very warm, with heatwaves and record temperatures reported; Rainfall: Below average everywhere, lowest in the Midlands, South and East; Temperature: Above average everywhere, record high maximum daily temperatures for August reported at eleven stations | Relatively mild and wet overall; Rainfall: Above average in most places, highest in the Midlands, South and East. Temperature: Above average in most places. Sunshine: Sunniest in the Southwest, dull in the East; Wind: Strong gales reported | Was a very mild and wet month, dominated by Atlantic low pressure systems, with the airflow mostly between southerly and westerly. Rainfall totals were above LTA, All mean air temperatures across the country were above their LTA for the month. | Was a mild and windy month, dominated by Atlantic low pressure systems to the west of Ireland, with the airflow mostly between southerly and south-westerly. The majority of monthly rainfall totals were above their LTA. mean air temperatures across the country were above their LTA for the month. | Very cold arctic air masses dominating, with high pressure to the north and the Jetstream displaced well to the south of Ireland, leading to drier than average conditions. The second half of the month was less cold with Atlantic low pressure systems dominating bringing wetter than average conditions. |
Rain Volume (mm) | 16.7 | 91.8 | 41.4 | 38.3 | 56.2 | 56.4 | 37.1 | 14.4 | 128.7 | 113.5 | 46.2 | 81.6 | |
% of Rainfall LTA | 26 | 179 | 77 | 73 | 92 | 82 | 68 | 20 | 214 | 143 | 61 | 106 | |
Mean temp (°C) | 5.7 | 7.3 | 7.8 | 8.9 | 13.1 | 14.6 | 17.4 | 17 | 13.9 | 12.6 | 9.1 | 4.6 | |
Difference Avg (°C) | 0.7 | 2.1 | 0.9 | 0.4 | 2.1 | 0.8 | 1.6 | 1.5 | 0.5 | 2.2 | 2 | -0.7 |