Derryclare Lough

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Ireland Monthy Weather

Ireland has so much to offer, even more so when the sunshines! 

The Irish climate is greatly influenced by the Atlantic Ocean. It has a moderating effect on the climate, which means it is unlikely to get very hot in summer or cold in winter. This ensures that Ireland has the perfect “Goldie-locks climate” (if you don’t mind the rain that is!)

Thanks to the Irish climate, the seasons tend to be mild. Irish summers are mostly pleasant with the average temperatures ranging around 18-20°C (64-68°F) and winter temperatures bordering around 4-6°C (39-42°F).

Humidity is unlikely to cause any issues in summer times as the dew point (measure of the moisture content of the air) is likely to get about 20°C (68°F). 

In Ireland, weather year round tends to be unpredictable and quite changeable so it is a good idea to always have rain gear with you all year round. 

If you are planning on visiting Ireland, you will want to know what type of weather to expect. 

The links below will give you a complete overview of Ireland weather by month in fahrenheit, as well as in celsius. 


Ireland Weather by month – Summary

Connor Pass in Kerry

View of the Connor Pass in County Kerry on a fine day. (Photo: © Beautifulblossom via Canva)

When is the best time to visit Ireland?

May is probably the best time to visit Ireland as there is a chance of decent weather, the days are long and it is still not the peak tourist season. Other good times to visit include late April and early September. 

Read all about the best time to visit Ireland here. 


What is the sunniest month in Ireland?

Generally, the months of May and June experience the most sunshine in Ireland. The day length is longer at this time of year and on average there can be 5-6.5 hours of sunshine. Locations in the south east of the county receive the most sunshine.

 Western sunset in Ireland

A western sunset in Ireland. (Photo: © Thomas Johannes via Canva)

What is the driest month in Ireland?

April tends to be one of the driest months of the year across the entire country. Dublin often receives about 55 mm (or 2”) of rain during this month. February is also a month that is typically drier than other months.


What is the wettest month in Ireland?

October is often the wettest month in Ireland. In Dublin, there is approximately 80 mm (3”) of rain during the month of October. The months of November, December and January usually also receive high amounts of rainfall each year.



Seasons in Ireland Weather

 The weather in Ireland can be a bit mixed. It is even possible to experience all seasons in a single day!

Spring in Ireland

Spring is one of the best seasons of the year in Ireland. Daily temperatures slowly start to increase and the daylight hours get noticeably longer.  Rain showers are rarely far away so rain gear is essential. 

In Ireland, spring covers the months of March, April and May. When February is mild, the spring feeling is in the air a little earlier.

Rain showers are a common feature of Irish spring weather

Rain showers are a common feature of Irish spring weather. (Photo: ©  mammuth via Canva)

March in Ireland

Ireland in March can be a bit blustery with plenty of showers. The weather of Ireland can still be a little cool (7°C / 45°F) or even a bit wintery, so a few warmer layers come in handy. For detailed information about what type of weather to expect during March and other events in Ireland see the links to our posts below:


April in Ireland

April is a lovely time to be in Ireland. Spring has well and truly arrived, there are plenty of blossoms on the trees and the spring flowers add a splash of color. The days are longer and the temperatures are gradually increasing (ca. 8°C / 46°F). April is often the driest month of the year in Ireland.

A little boat in West Cork

On a calm day, the water can look like glass in West Cork. (Photo: © kodachrome25)

May in Ireland

May is possibly the best month in Ireland weatherwise and certainly my personal favorite time to visit. There is often a good chance of a decent weather forecast, temperatures are pleasant (7-15°C or 45-59°F) and the days are long, which comes in handy for sightseeing. It also beats the main tourist season.


Summer in Ireland

June, July and August are the months of summer in Ireland. The long days and warmer temperatures makes it the most popular time to visit the country and coincides with the high tourist season. In Ireland, summer months are a great time to explore the Irish landscape and take part in outdoor activities, such as hiking. 

The Boardwalk in Dublin

The Boardwalk in Dublin is a great place to wander on a sunny day. (Photo: © Gim42 via Canva)

June in Ireland

One of the highlights of June are the very long summer evenings, which are ideal for if you are planning a road trip. With temperatures ranging between 10-18°C (50-64°F) and low average rainfall (ca. 70 mm or 3” on average), it is an ideal time to explore the cities as well as the countryside.


July in Ireland

In July, the summer is well and truly underway. On a good day, the temperature is likely to reach a high of about 20°C (68°F), which is perfect for sightseeing. If you fancy going for a swim or surf in the sea, it is good to know that the average water temperatures in Ireland are starting to reach their peak around now ( ca. 14 °C / 57°F). (This is still quite cold!)

Donegal Beach

A hazy day on Trá na Rossan, County Donegal. (Photo: © Stephen Barnes via Canva)

August in Ireland 

The weather in August is quite similar to July, pleasantly warm (15-20°C / 59-65°F) and not too much rainfall. One of the main differences is that by the end of August, the evenings are noticeably shorter and dusk starts shortly after 8 pm. It is a very popular time for holidays in Ireland for both domestic and international tourists.


Autumn in Ireland

Early autumn, or fall in Ireland is a great time to explore the country. The weather is cooler than in the summer, but still very enjoyable. From about late September or early October, the temperatures are cooler and the rainfall increases. The number of daylight hours also reduces considerably. 

Howth Lighthouse, Dublin

Early autumn is a often a lovely time of the year in Ireland. (Photo: © MiiQe via Canva)

September in Ireland 

After May, September is my next favorite time of year to visit Ireland. The weather is often settled around this time (especially in early September) and while it may not be quite as warm as the summer, the temperatures are very agreeable (ca. 13°C / 55°F on average). Most attractions still operate with their summer opening times, but there are far fewer tourists around at this time of year.


October in Ireland

Weather in Ireland in October can be refreshing. It is certainly cooler with average temperatures ranging between 7-14 °C (45-57 °F) and it is generally wetter than the previous months. There is also a chance of some clear, crisp days at this time of year and then it is best to spend them outside, soaking up the autumnal Irish landscape.  

Connemara on a wet day

October is usually one of the wettest months, but not every day looks like this! (Photo: © Cedric Maes via Canva)

November in Ireland

November is the low season in Ireland. The weather during this month is typically cool with the average low temperature reaching about 4°C or 39°F. Grey skies are the norm at this time of year and it is often rainy. It is usually not the ideal time of year for outside activities, but there are plenty of superb indoor attractions to keep your itinerary full. 


Winter in Ireland

Winter in Ireland is usually windy and wet, rather than snowy. Does it snow in Ireland? Yes, it does occasionally snow in Ireland during winter. (Usually it doesn’t snow all that much and the snow rarely stays on the ground more than a few days.) In Ireland weather in winter brings cool temperatures and short days, so be sure to wrap up in layers when you are out and about.

Landscape County Donegal, Ireland

Grey skies are a common sight in Ireland during winter. (Photo © Stephen Barnes via Canva)

December in Ireland 

The daily average temperature during December in Ireland is about 6°C (42°F). This is cold by Irish standards, especially when it is combined with wind chill and rainy or damp weather that is typical of this time of year. Generally, the temperatures tend to stay above freezing point most of the time. Warm layers are essential to keep you feeling cosy.


January in Ireland 

The average monthly temperature in Ireland in January ranges between 2-8°C (36-46°F). It can be a windy month, with average wind speeds of about 27 km per hour (17 miles per hour) recorded at Dublin Airport. Near the coast, you can expect strong gusts of wind and big swells. Road conditions can be tricky, particularly on rural stretches where icey patches can be an issue. 

Misty Mountains

January days are often cool, wet and a bit grey. (Photo: © Eva Czorny via Canva)

February in Ireland 

February is usually one of the coldest months in Ireland with temperatures of 2-9°C (36-48°F). It is also on average one of the drier months of the year. Grey skies are quite typical of February weather and there can often be stormy weather from the Atlantic. While the chance of experiencing snow in Ireland is generally low, it is highest during January and February.

If you would like some more weather related information, why not take a look at the best time to visit Ireland?