Average Weather in October in Dublin Ireland
In Dublin, the month of October is characterized by falling daily high temperatures, with daily highs decreasing by 6°F, from 59°F to 54°F over the course of the month, and rarely exceeding 65°F or dropping below 48°F.
Daily low temperatures decrease by 4°F, from 49°F to 44°F, rarely falling below 37°F or exceeding 56°F.
For reference, on July 27, the hottest day of the year, temperatures in Dublin typically range from 54°F to 67°F, while on February 18, the coldest day of the year, they range from 38°F to 47°F.
Average High and Low Temperature in October
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in October
The month of October in Dublin experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 56% to 61%.
The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 44% of the time.
For reference, on January 27, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 67%, while on July 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 51%.
Cloud Cover in October
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Dublin, the chance of a wet day over the course of October is increasing, starting the month at 34% and ending it at 39%.
For reference, the year's highest daily chance of a wet day is 43% on January 1, and its lowest chance is 26% on April 22.
Probability of Precipitation in October
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during October in Dublin is gradually increasing, starting the month at 2.6 inches, when it rarely exceeds 4.3 inches or falls below 1.1 inches, and ending the month at 3.1 inches, when it rarely exceeds 5.3 inches or falls below 1.2 inches.
The highest average 31-day accumulation is 3.1 inches on October 29.
Average Monthly Rainfall in October
Over the course of October in Dublin, the length of the day is very rapidly decreasing. From the start to the end of the month, the length of the day decreases by 2 hours, 2 minutes, implying an average daily decrease of 4 minutes, 4 seconds, and weekly decrease of 28 minutes, 31 seconds.
The shortest day of the month is October 31, with 9 hours, 33 minutes of daylight and the longest day is October 1, with 11 hours, 35 minutes of daylight.
Hours of Daylight and Twilight in October
The latest sunrise of the month in Dublin is 8:16 AM on October 28 and the earliest sunrise is 58 minutes earlier at 7:18 AM on October 29.
The latest sunset is 7:01 PM on October 1 and the earliest sunset is 2 hours, 7 minutes earlier at 4:54 PM on October 31.
Daylight saving time (DST) ends at 1:00 AM on October 29, 2017, shifting sunrise and sunset to be an hour earlier.
For reference, on June 21, the longest day of the year, the Sun rises at 4:56 AM and sets 17 hours, 0 minutes later, at 9:56 PM, while on December 21, the shortest day of the year, it rises at 8:38 AM and sets 7 hours, 30 minutes later, at 4:08 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in October
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The chance that a given day will be muggy in Dublin is essentially constant during October, remaining around 0% throughout.
For reference, on July 25, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the leasy muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in October
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed in Dublin is increasing during October, increasing from 7.3 miles per hour to 8.3 miles per hour over the course of the month.
For reference, on January 3, the windiest day of the year, the daily average wind speed is 9.3 miles per hour, while on July 24, the calmest day of the year, the daily average wind speed is 5.7 miles per hour.
Average Wind Speed in October
Wind Direction in October
Dublin is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Dublin is gradually decreasing during October, falling by 2°F, from 57°F to 55°F, over the course of the month.
Average Water Temperature in October
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy in Dublin is decreasing during October, falling by 1.3 kWh, from 2.7 kWh to 1.4 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in October
For the purposes of this report, the geographical coordinates of Dublin are 53.333 deg latitude, -6.249 deg longitude, and 62 ft elevation.
The topography within 2 miles of Dublin contains only modest variations in elevation, with a maximum elevation change of 164 feet and an average elevation above sea level of 51 feet. Within 10 miles contains only modest variations in elevation (2,133 feet). Within 50 miles also contains large variations in elevation (3,064 feet).
The area within 2 miles of Dublin is covered by artificial surfaces (95%), within 10 miles by artificial surfaces (43%) and water (21%), and within 50 miles by water (45%) and grassland (30%).
This report illustrates the typical weather in Dublin year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Dublin.
For each station, the records are corrected for the elevation difference between that station and Dublin according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Dublin is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Dublin and a given station.
The stations contributing to this reconstruction are: Dublin Airport (61%, 10 kilometers, north); Casement Aerodrome (37%, 14 kilometers, west); and Royal Air Force Valley (1.9%, 114 kilometers, east).
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.