Monthly weather forecast and climate
Dublin, Ireland

A sunset view of the illuminated Ha Penny Bridge reflected in the water below, found in Dublin, Ireland
A sunset view of the illuminated Ha Penny Bridge reflected in the water below, found in Dublin, Ireland
Dublin, the capital of Ireland, has an oceanic temperate climate (Köppen climate classification Cfb) with cool summers and mild winters - similar to much of northwestern Europe. The city lies at the mouth of the River Liffey, while the low altitude Wicklow Mountain range forms the southern boundary. The Atlantic Ocean, the Gulf Stream, and the North Atlantic Drift significantly influence Dublin's climate, while its location on the east coast makes it the driest place in Ireland.

Temperature extremes are rare, but the humidity is high throughout the year. Average high temperatures rarely cross 20°C (68°F) during peak summer in July, while average lows are above freezing at 2.2°C (36°F) in peak winter in January. Occasional exposure to Arctic winds during the usually mild winter causes severe cold and snow showers. Annual rainfall is distributed evenly throughout the year and amounts to 762mm (30"). Snowfall is occasional, but frost is more common during the winter.
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The best time to visit Dublin is from May to September. The late spring and summer feature sunny days and longer evenings. Daylight extends from fourteen to seventeen hours, and the summer is buzzing with festivals all around.
Average daily temperatures range between 15.6°C (60.1°F) and 19.4°C (66.9°F); spring brings about the natural blooming of flowers, while the land covers itself in green during the summer. Weather is pleasant for outdoor activities with numerous parks around, and tourists are never short of fun activities.
A jacket or sweater, even during summer, is a welcome aid to keep the highly unpredictable Irish weather at bay.

Winter is the worst period to visit Dublin. Average low temperatures drop to near freezing at 2.2°C (36°F), while the daily high temperatures seldom rise above 7.8°C (46°F). Additionally, cold fronts due to the easterly winds make the weather chilly.
Rain is light, but the regular fog during winter restricts early morning escapades to hotel lobbies and nearby sites. The sunshine drops to an average of 2 to 3 hours a day as the days are short. Winter experiences a drop in visitors as the average sea temperatures cool down to a low of 7.2°C (45°F).

The average low temperature is 2.2°C (36°F), while the average high is only ten degrees higher at 7.8°C (46°F). The weather is not glacially cold. However, winter is hardly a time to wander outdoors. Weather in January »

February is officially the driest month of the year. Dublin, due to its location on the east coast and vulnerability to unpredictable eastern winds, is colder during the winter than its west coast counterparts are. Weather in February »

Spring arrives in Dublin by March and signals the end of the winter with a steady rise in daily temperatures. Average high temperatures rise to above 10°C (50°F), and the average lows are 4.4°C (39.9°F). Weather in March »

April is the heart of the spring season, with greenery spread all over the land with its many public parks. With daily temperatures in the mid 10°C (50°F), the weather is mild enough to roam throughout Dublin. Weather in April »

May is the sunniest month of the year, with daily sunshine at close to 6.5 hours. The days are at pleasant 15.6°C (60.1°F) as the tourist season kicks in mid-May. Night temperatures are at mild 10°C (50°F). Weather in May »

June is summer in Dublin with the longest days stretching to 17 hours of daylight. Daily average temperatures nearby a comfortable 18.3°C (64.9°F) make it a perfect time for outdoor activities. Weather in June »

July is the hottest month of the year as the average temperature peaks to 19.8°C (67.6°F). Swimming and other water activities are enjoyable in mid-summer with the Irish Sea at the warmest of the year. Weather in July »

August is another wonderful summer month, with mild average day temperatures of 19.4°C (66.9°F). Light rain is frequent but does not last long enough to disrupt the otherwise beautiful weather. Weather in August »

September is the arrival of autumn with temperatures in a mildly cold range of 9.4°C (48.9°F) to 16.7°C (62.1°F). It is another great month for swimming with bearable water temperatures. Weather in September »

October is the wettest month with 76.2mm (3") of rain, and average temperatures are in the range of a cold 7.2°C (45°F) to 13.9°C (57°F). Weather in October »

November is the end of the autumn season, and by mid-November, average daily temperatures drop to a cold 10°C (50°F). Daily sunshine drops drastically to 3 hours as the days become short. Weather in November »

Daily average high is a chilly 7.8°C (46°F), and frost is common along with early morning fog. Snow is a remote possibility in the face of cold winds. Weather in December »

What is the coldest month in Dublin?

With an average high-temperature of 8.8°C (47.8°F) and an average low-temperature of 3.9°C (39°F), January is the coldest month.

How much does it rain in Dublin?

In Dublin, during the entire year, the rain falls for 128 days, and collects up to 714.4mm (28.1") of precipitation.

What is the driest month in Dublin?

February is the month with the least rainfall. Rain falls for 10 days and accumulates 46.1mm (1.8") of precipitation.

What is the warmest month in Dublin?

With an average high-temperature of 20.2°C (68.4°F) and an average low-temperature of 13.5°C (56.3°F), July is the warmest month.

What is the wettest month in Dublin?

The month with the most rainfall in Dublin, Ireland, is October when the rain falls for 12 days and typically aggregates up to 76mm (3") of precipitation.
Average temperature - Dublin, Ireland
Average rainfall - Dublin, Ireland

The wettest month (with the highest rainfall) is October (76mm).
The driest month (with the lowest rainfall) is February (46.1mm).

Average rainfall days - Dublin, Ireland

Months with the highest number of rainy days are January, October and December (12 days).
Months with the lowest number of rainy days are June and September (9 days).

Average sea temperature - Dublin, Ireland

The best month for swimming (with the highest average sea temperature) is August (14.9°C).
The coldest month (with the lowest average sea temperature) is March (8.4°C).

Average daylight / Average sunshine - Dublin, Ireland