The best times to visit Castlebar for ideal weather are

June 11th to September 16th

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

 

 


Other Castlebar Travel Info

Weather in Castlebar

Temperature

Average temperatures in Castlebar vary somewhat. Considering humidity, temperatures feel cold for most of the year with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 15th 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 Castlebar, 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 66.6°F (19.2°C) with temperatures rarely dropping below 52.4°F (11.3°C) at night.

Castlebar Temperatures (Fahrenheit)

Key
High
Average
Low

Castlebar 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.

Castlebar Perceived Temperature (F)

Key
High
Average
Low

Castlebar Perceived Temperature (C)

Key
High
Average
Low

 

Average Castlebar 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

MonthAvg. High (°F)Avg. Mean (°F)Avg. Low (°F)
Jan4640.935.5
Feb47.341.436
Mar50.543.336.5
Apr56.347.639.5
May59.151.444.1
Jun63.95648.2
Jul65.458.251.6
Aug64.157.251.1
Sep62.154.948.4
Oct5750.443.9
Nov50.445.139.5
Dec45.94135.7

Show Celsius

MonthAvg. High (°C)Avg. Mean (°C)Avg. Low (°C)
Jan7.84.91.9
Feb8.55.22.2
Mar10.36.32.5
Apr13.58.74.2
May15.110.86.7
Jun17.713.39
Jul18.614.610.9
Aug17.81410.6
Sep16.712.79.1
Oct13.910.26.6
Nov10.27.34.2
Dec7.752.1

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Castlebar are June, 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 late December with an average of 4 days of significant precipitation the week of December 24th.

When can you find snow in Castlebar? 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 Castlebar.

Key
Days with precipitation

Snow on the Ground

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

Key
Snow depth

Average Rain and Snow by Month

Show Inches

MonthDaily Chance of RainAverage Snow Depth (in)Total Precipitation (in)
Jan52%05.8
Feb42%03.8
Mar30%03
Apr30%03
May34%03.4
Jun27%02.8
Jul38%04.3
Aug37%04
Sep29%03.2
Oct41%04.5
Nov47%05.8
Dec54%06

Show Centimeters

MonthDaily Chance of RainAverage Snow Depth (cm)Total Precipitation (cm)
Jan52014.7
Feb4209.7
Mar3007.6
Apr3007.6
May3408.6
Jun2707.1
Jul38010.9
Aug37010.2
Sep2908.1
Oct41011.4
Nov47014.7
Dec54015.2

 

Humidity and Wind

Castlebar has some extremely humid months, and high humidity throughout the year. The least humid month is April (71.1% relative humidity), and the most humid month is November (86.4%).

Wind in Castlebar is usually moderate. The windiest month is January, followed by December and May. January’s average wind speed of around 9.2 knots (10.6 MPH or 17.1 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early March where average top sustained speeds reach 16.2 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

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.

MonthAvg. WindAvg. Wind FeelSustained High WindHigh Wind Feel
Jan9.2Gentle breeze15Significant breeze
Feb8.5Gentle breeze13.6Significant breeze
Mar8.9Gentle breeze14.4Significant breeze
Apr8.1Gentle breeze13.4Significant breeze
May8.9Gentle breeze14Significant breeze
Jun7.4Gentle breeze12.1Significant breeze
Jul7.3Gentle breeze12Significant breeze
Aug7.5Gentle breeze12.3Significant breeze
Sep7.5Gentle breeze12.3Significant breeze
Oct7.8Gentle breeze12.8Significant breeze
Nov8.2Gentle breeze13.6Significant breeze
Dec9Gentle breeze14.7Significant breeze

Show Relative Humidity by Month

MonthAvg. Relative Humidity
Jan85%
Feb83.6%
Mar75.6%
Apr71.1%
May72.7%
Jun73.5%
Jul78.9%
Aug80.3%
Sep80.6%
Oct84.2%
Nov86.4%
Dec86.3%

 

Is it Safe to Travel to Castlebar?

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 Castlebar, 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 Castlebar 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 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 Castlebar Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 63.5°F (17.5°C) and 48.6°F (9.2°C) with warmer temperatures in the later months. Rain is somewhat common with 9 to 11 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 8 to 12 days of precipitation per month. June – August is the busiest season for tourism in Castlebar, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 63°F (17.2°C) and 46.9°F (8.3°C), which will feel chilly given the humidity and wind. It rains or snows a good amount: 9 to 14 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 Castlebar to be enjoyable for warm weather travelers. The average high during this season is between 48.6°F (9.2°C) and 44.8°F (7.1°C). On average, it rains or snows a very great amount: 12 to 17 times per month. These times of year are fairly slow with tourists.

 

Best Times to TravelIreland › Castlebar, Ireland