The best times to visit Ireland for ideal weather are

June 4th to September 23rd

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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Ireland Travel Guide

  • Safety
  • The busiest and least popular months
  • Overall travel experience by time of year
  • Weather in Ireland

    Temperature

    Average temperatures in Ireland vary very little and are seasonally temperate. The area is in the top 71 percent of tourist destinations for pleasant weather. 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 precipitation in Ireland are January, November, and then December. The lowest chance of rain or snow occurs around mid-April. For example, on the week of April 16th there are only 1.9 days of precipitation on average. By contrast, it’s most likely to rain or snow in early-to-mid-January with an average of 4.7 days with significant precipitation the week of January 8th.

    When can you find snow in Ireland? Weather stations report a good amount of snow throughout the year likely to be deepest around March, especially close to early April. Powder (new snow) is most often falls around April 2nd. 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.

    Chance of 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 58.6 0.4 0.13
    Feb 48.6 0.2 0.09
    Mar 45.7 0.8 0.07
    Apr 37.1 0.5 0.06
    May 50 0 0.08
    Jun 44.3 0 0.1
    Jul 55.7 0.1 0.11
    Aug 54.3 0.4 0.11
    Sep 41.4 0 0.08
    Oct 50 0.8 0.11
    Nov 57.1 0.3 0.13
    Dec 57.1 0.6 0.13

    Show Centimeters

    Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
    Jan 58.6 1 0.33
    Feb 48.6 0.5 0.23
    Mar 45.7 2 0.18
    Apr 37.1 1.3 0.15
    May 50 0 0.2
    Jun 44.3 0 0.25
    Jul 55.7 0.3 0.28
    Aug 54.3 1 0.28
    Sep 41.4 0 0.2
    Oct 50 2 0.28
    Nov 57.1 0.8 0.33
    Dec 57.1 1.5 0.33

     

    Humidity and Wind

    Ireland has above average humidity compared to most tourist destinations. The least humid month is April (72.6% relative humidity), and the most humid month is November (81.7%).

    Wind in Ireland is usually stronger than usual. The windiest month is January, followed by December and November. January’s average wind speed of around 12.2 knots (14 MPH or 22.6 KPH) is considered “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.

    Month Avg. Wind Meaning (Beaufort) Avg. Maximum Sustained Wind Meaning (Beufort)
    Jan 12.2 a moderate breeze 19.1 a fresh breeze
    Feb 10.9 a gentle breeze 17.2 a fresh breeze
    Mar 11 a moderate breeze 17.2 a fresh breeze
    Apr 9.6 a gentle breeze 15.1 a moderate breeze
    May 10.5 a gentle breeze 15.9 a fresh breeze
    Jun 8.9 a gentle breeze 13.9 a moderate breeze
    Jul 9 a gentle breeze 14.1 a fresh breeze
    Aug 9.4 a gentle breeze 14.6 a moderate breeze
    Sep 9.6 a gentle breeze 14.7 a fresh breeze
    Oct 10.1 a gentle breeze 15.7 a moderate breeze
    Nov 11.2 a moderate breeze 17.4 a fresh breeze
    Dec 12.2 a moderate breeze 18.9 a fresh 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?

    As of 5/2/2017 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. 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 frequent with 11 to 16 days of precipitation per month. Spring is busy for tourism, which makes it a good time for those looking for things to do.

    Summer (June through August)

    The middle-year months have slightly cold weather with high temperatures that are brisk. These months see moderate precipitation with 13 to 17 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 very great amount: 12 to 17 days per month. Tourism is the slowest during these months due to the weather, so hotels may be lower 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: 14 to 18 times per month. These times of year are fairly slow with tourists.

     

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