The best times to visit Rossnowlagh 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.



Other Rossnowlagh Travel Info

Weather in Rossnowlagh


Average temperatures in Rossnowlagh vary somewhat. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a fair chance of precipitation about half of the year. The area is less temperate than some — in the 28th 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 Rossnowlagh, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 65.7°F (18.7°C) with temperatures rarely dropping below 53.6°F (12°C) at night.

Rossnowlagh Temperatures (Fahrenheit)


Rossnowlagh Temperatures (Celsius)


“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.

Rossnowlagh Perceived Temperature (F)


Rossnowlagh Perceived Temperature (C)



Average Rossnowlagh 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 46.3 42 36.9
Feb 47 42.1 37.4
Mar 49.7 43.9 38.1
Apr 54.8 47.6 40.6
May 58.5 51.7 45.3
Jun 63.2 56.5 50
Jul 64.9 58.8 53.4
Aug 63.7 58 53
Sep 61.5 55.7 50.4
Oct 57 51.7 46.3
Nov 50.7 46.3 41.2
Dec 46.8 42.4 37.3

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 7.9 5.6 2.7
Feb 8.3 5.6 3
Mar 9.8 6.6 3.4
Apr 12.7 8.7 4.8
May 14.7 10.9 7.4
Jun 17.3 13.6 10
Jul 18.3 14.9 11.9
Aug 17.6 14.4 11.7
Sep 16.4 13.2 10.2
Oct 13.9 10.9 7.9
Nov 10.4 7.9 5.1
Dec 8.2 5.8 2.9



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Rossnowlagh are March, June, and then July. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid March. For example, on the week of March 12th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in early December with an average of 3 days of significant precipitation the week of December 3rd.

When can you find snow in Rossnowlagh? Weather stations report no annual snow. 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 Rossnowlagh.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 22% 0 2.3
Feb 22% 0 2
Mar 14% 0 1.2
Apr 16% 0 1.2
May 20% 0 2
Jun 15% 0 1.5
Jul 16% 0 1.5
Aug 18% 0 1.8
Sep 17% 0 1.6
Oct 22% 0 2.8
Nov 27% 0 2.8
Dec 37% 0 4.2

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 22 0 5.8
Feb 22 0 5.1
Mar 14 0 3
Apr 16 0 3
May 20 0 5.1
Jun 15 0 3.8
Jul 16 0 3.8
Aug 18 0 4.6
Sep 17 0 4.1
Oct 22 0 7.1
Nov 27 0 7.1
Dec 37 0 10.7


Humidity and Wind

Rossnowlagh has some extremely humid months, and high humidity throughout the year. The least humid month is April (70.5% relative humidity), and the most humid month is January (81.7%).

Wind in Rossnowlagh is usually moderate. The windiest month is January, followed by December and March. January’s average wind speed of around 12.2 knots (14 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 20.7 knots, which is considered a fresh breeze.

Relative Humidity (%)

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

Avg. Relative Humidity


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

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 19.6 Strong breeze
Feb 10.3 Gentle breeze 16.6 Significant breeze
Mar 11.7 Significant breeze 18.8 Strong breeze
Apr 9.3 Gentle breeze 15.2 Significant breeze
May 9.8 Gentle breeze 15.6 Strong breeze
Jun 8.7 Gentle breeze 13.9 Significant breeze
Jul 8.8 Gentle breeze 14.3 Strong breeze
Aug 9.4 Gentle breeze 15.1 Significant breeze
Sep 9.9 Gentle breeze 15.5 Strong breeze
Oct 10 Gentle breeze 16 Significant breeze
Nov 11 Significant breeze 18.1 Strong breeze
Dec 11.8 Significant breeze 19.1 Strong breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 81.7%
Feb 80.6%
Mar 74.1%
Apr 70.5%
May 72.4%
Jun 74.6%
Jul 78.2%
Aug 78.6%
Sep 78.3%
Oct 78.7%
Nov 81.4%
Dec 81.3%


Is it Safe to Travel to Rossnowlagh?

Our best data indicates this area is generally safe. As of Oct 07, 2019 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. This advisory was last updated on Oct 04, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Rossnowlagh, 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 Rossnowlagh 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

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 extrapolated based on nearby areas. 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 Rossnowlagh Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 62.8°F (17.1°C) and 48.4°F (9.1°C) with warmer temperatures in the later months. Rain is somewhat common with 4 to 6 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 the least precipitation with 5 to 6 days of precipitation per month. June – August is the busiest season for tourism in Rossnowlagh, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 62.4°F (16.9°C) and 47.3°F (8.5°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 5 to 8 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 Rossnowlagh to be enjoyable for warm weather travelers. The average high during this season is between 48.4°F (9.1°C) and 45.4°F (7.4°C). On average, it rains or snows a fair amount: 6 to 11 times per month. These times of year are fairly slow with tourists.


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