The best times to visit Ireland for ideal weather are

June 11th to September 30th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

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Weather in Ireland

Temperature

Average temperatures in Ireland vary somewhat. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 20th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Ireland, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 65.3°F (18.5°C) with temperatures rarely dropping below 54.3°F (12.4°C) at night.

Ireland Temperatures (Fahrenheit)

Key
High
Average
Low

Ireland Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Ireland Perceived Temperature (F)

Key
High
Average
Low

Ireland Perceived Temperature (C)

Key
High
Average
Low

 

Average Ireland Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 47.2 43 38.3
Feb 47.9 43.2 38.4
Mar 50.2 44.5 38.8
Apr 55.1 48.5 42.3
May 58 51.9 46.1
Jun 62.5 56.4 50.4
Jul 64.5 58.7 53.5
Aug 63.8 58.3 53.3
Sep 61.7 56.1 50.9
Oct 57.4 52.5 47.3
Nov 51.5 47.3 42.5
Dec 47.7 43.5 38.7

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 8.4 6.1 3.5
Feb 8.8 6.2 3.6
Mar 10.1 6.9 3.8
Apr 12.8 9.2 5.7
May 14.4 11.1 7.8
Jun 16.9 13.6 10.2
Jul 18.1 14.8 11.9
Aug 17.7 14.6 11.8
Sep 16.5 13.4 10.5
Oct 14.1 11.4 8.5
Nov 10.8 8.5 5.8
Dec 8.7 6.4 3.7


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Ireland are April, September, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid April. For example, on the week of April 16th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in mid January with an average of 3 days of significant precipitation the week of January 15th.

When can you find snow in Ireland? Weather stations report very large amounts of snow likely to be deepest around April, especially close to early April. The best time to ski (if at all) in Ireland is often around around April 2nd when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chanceof Precipitation

The graph below shows the % chance of rainy and snowy days in Ireland.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Ireland (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 37% 1 3.9
Feb 28% 0.6 2.5
Mar 24% 2.6 2.3
Apr 20% 13 1.8
May 25% 0 2.4
Jun 25% 0 2.9
Jul 31% 1.6 3.4
Aug 28% 9.8 3.3
Sep 21% 0 2.3
Oct 28% 10.4 3.4
Nov 34% 1.3 3.8
Dec 36% 2.2 4

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 37 2.5 9.9
Feb 28 1.5 6.4
Mar 24 6.6 5.8
Apr 20 33 4.6
May 25 0 6.1
Jun 25 0 7.4
Jul 31 4.1 8.6
Aug 28 24.9 8.4
Sep 21 0 5.8
Oct 28 26.4 8.6
Nov 34 3.3 9.7
Dec 36 5.6 10.2

 

Humidity and Wind

Ireland has some extremely humid months, and high humidity throughout the year. The least humid month is April (72.6% relative humidity), and the most humid month is November (81.7%).

Wind in Ireland is usually moderate. The windiest month is January, followed by December and November. January’s average wind speed of around 12.2 knots (14.1 MPH or 22.6 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid January where average top sustained speeds reach 20.3 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Ireland.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 12.2 Significant breeze 19.1 Strong breeze
Feb 10.9 Gentle breeze 17.2 Strong breeze
Mar 11 Significant breeze 17.2 Strong breeze
Apr 9.6 Gentle breeze 15.1 Significant breeze
May 10.5 Gentle breeze 15.9 Strong breeze
Jun 8.9 Gentle breeze 13.9 Significant breeze
Jul 9 Gentle breeze 14.1 Strong breeze
Aug 9.4 Gentle breeze 14.6 Significant breeze
Sep 9.6 Gentle breeze 14.7 Strong breeze
Oct 10.1 Gentle breeze 15.7 Significant breeze
Nov 11.2 Significant breeze 17.4 Strong breeze
Dec 12.2 Significant breeze 18.9 Strong breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 81.2%
Feb 80.6%
Mar 75.1%
Apr 72.6%
May 73.6%
Jun 76%
Jul 78.8%
Aug 79%
Sep 79.2%
Oct 81.4%
Nov 81.7%
Dec 81.3%

 

Is it Safe to Travel to Ireland?

Our best data indicates this area is generally safe. As of Jan 18, 2018 there are no travel advisories or warnings for Ireland; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories


 

The Busiest and Least Crowded Months

The busiest month for tourism in Ireland is July, followed by August and January. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Ireland in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is very reliable. Displayed data is calculated relative to the peak, so a score of 54.4 in November means 54.4% of the tourists vs. July.


Overall Ireland Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 61°F (16.1°C) and 48.9°F (9.4°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 8 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have comfortably cool weather with high temperatures that are brisk. These months see moderate precipitation with 7 to 10 days of precipitation per month. June – August is the busiest season for tourism in Ireland, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 62.8°F (17.1°C) and 48.1°F (8.9°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 6 to 10 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in Ireland to be enjoyable for warm weather travelers. The average high during this season is between 49°F (9.4°C) and 46.4°F (8°C). On average, it rains or snows a great amount: 8 to 11 times per month. These times of year are fairly slow with tourists.

 

Best Times to Travel › Ireland

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