Winter Weather in Dungarvan Ireland

Daily high temperatures are around 49°F, rarely falling below 41°F or exceeding 55°F. The lowest daily average high temperature is 48°F on January 19.

Daily low temperatures are around 41°F, rarely falling below 33°F or exceeding 50°F. The lowest daily average low temperature is 40°F on February 18.

For reference, on July 26, the hottest day of the year, temperatures in Dungarvan typically range from 56°F to 66°F, while on February 18, the coldest day of the year, they range from 40°F to 48°F.

The figure below shows you a compact characterization of the hourly average winter temperatures. 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.

Ocean Shores, United States (4,640 miles away) is the far-away foreign place with temperatures most similar to Dungarvan (view comparison).

© OpenStreetMap contributors

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The winter in Dungarvan experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 65% throughout the season. The highest chance of overcast or mostly cloudy conditions is 68% on December 25.

The clearest day of the winter is February 26, with clear, mostly clear, or partly cloudy conditions 37% of the time.

For reference, on December 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 68%, while on July 16, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 51%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Dungarvan, the chance of a wet day over the course of the winter is rapidly decreasing, starting the season at 37% and ending it at 30%.

For reference, the year's highest daily chance of a wet day is 44% on January 6, and its lowest chance is 26% on June 22.

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the winter in Dungarvan is decreasing, starting the season at 3.2 inches, when it rarely exceeds 5.6 inches or falls below 1.3 inches, and ending the season at 2.4 inches, when it rarely exceeds 4.2 inches or falls below 0.7 inches.

The highest average 31-day accumulation is 3.6 inches on December 29.

Over the course of the winter in Dungarvan, the length of the day is very rapidly increasing. From the start to the end of the season, the length of the day increases by 2 hours, 46 minutes, implying an average daily increase of 1 minute, 52 seconds, and weekly increase of 13 minutes, 2 seconds.

The shortest day of the winter is December 21, with 7 hours, 44 minutes of daylight and the longest day is February 28, with 10 hours, 50 minutes of daylight.

The latest sunrise of the winter in Dungarvan is 8:39 AM on December 30 and the earliest sunrise is 1 hour, 21 minutes earlier at 7:18 AM on February 28.

The earliest sunset is 4:18 PM on December 12 and the latest sunset is 1 hour, 50 minutes later at 6:08 PM on February 28.

Daylight saving time is observed in Dungarvan during 2024, but it neither starts nor ends during the winter, so the entire season is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:09 AM and sets 16 hours, 45 minutes later, at 9:54 PM, while on December 21, the shortest day of the year, it rises at 8:37 AM and sets 7 hours, 44 minutes later, at 4:20 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for the winter of 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

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 Dungarvan is essentially constant during the winter, remaining around 0% throughout.

For reference, on August 8, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

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 Dungarvan is essentially constant during the winter, remaining within 0.8 miles per hour of 15.9 miles per hour throughout.

For reference, on December 31, the windiest day of the year, the daily average wind speed is 16.6 miles per hour, while on July 25, the calmest day of the year, the daily average wind speed is 11.2 miles per hour.

The highest daily average wind speed during the winter is 16.6 miles per hour on December 31.

The hourly average wind direction in Dungarvan throughout the winter is predominantly from the west, with a peak proportion of 41% on December 30.

Dungarvan 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 Dungarvan is decreasing during the winter, falling by 4°F, from 52°F to 47°F, over the course of the season.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Dungarvan typically lasts for 10 months (316 days), from around February 12 to around December 24, rarely starting after April 1, or ending before November 20.

The smallest chance that a given day will be within the growing season in Dungarvan during the winter is 27% on January 16.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Dungarvan are very rapidly decreasing during the winter, decreasing by 1,448°F, from 1,463°F to 15°F, over the course of the season.

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 Dungarvan is increasing during the winter, rising by 1.3 kWh, from 0.7 kWh to 2.0 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 0.6 kWh on December 24.

For the purposes of this report, the geographical coordinates of Dungarvan are 52.088 deg latitude, -7.625 deg longitude, and 39 ft elevation.

The topography within 2 miles of Dungarvan contains only modest variations in elevation, with a maximum elevation change of 112 feet and an average elevation above sea level of 25 feet. Within 10 miles contains only modest variations in elevation (2,379 feet). Within 50 miles also contains large variations in elevation (3,022 feet).

The area within 2 miles of Dungarvan is covered by grassland (45%), water (28%), and artificial surfaces (11%), within 10 miles by grassland (48%) and water (27%), and within 50 miles by water (42%) and grassland (38%).