Summer Weather in Dundonald United KingdomDaily high temperatures are around 61°F, rarely falling below 54°F or exceeding 70°F. The highest daily average high temperature is 64°F on July 31. Daily low temperatures increase by 4°F, from 47°F to 51°F, rarely falling below 41°F or exceeding 58°F. The highest daily average low temperature is 53°F on July 31. For reference, on July 24, the hottest day of the year, temperatures in Dundonald typically range from 53°F to 64°F, while on February 17, the coldest day of the year, they range from 36°F to 45°F. The figure below shows you a compact characterization of the hourly average summer 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. Langford, Canada (4,458 miles away) is the far-away foreign place with temperatures most similar to Dundonald (view comparison). CloudsThe summer in Dundonald experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 52% throughout the season. The lowest chance of overcast or mostly cloudy conditions is 50% on July 11. The clearest day of the summer is July 11, with clear, mostly clear, or partly cloudy conditions 50% of the time. For reference, on January 27, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 68%, while on July 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 50%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Dundonald, the chance of a wet day over the course of the summer is gradually increasing, starting the season at 30% and ending it at 33%. For reference, the year's highest daily chance of a wet day is 46% on January 3, and its lowest chance is 27% on April 28. RainfallTo 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 summer in Dundonald is gradually increasing, starting the season at 2.0 inches, when it rarely exceeds 3.3 inches or falls below 0.9 inches, and ending the season at 2.5 inches, when it rarely exceeds 4.2 inches or falls below 1.0 inches. SunOver the course of the summer in Dundonald, the length of the day is very rapidly decreasing. From the start to the end of the season, the length of the day decreases by 3 hours, 8 minutes, implying an average daily decrease of 2 minutes, 4 seconds, and weekly decrease of 14 minutes, 28 seconds. The shortest day of the summer is August 31, with 13 hours, 47 minutes of daylight and the longest day is June 20, with 17 hours, 17 minutes of daylight. The earliest sunrise of the summer in Dundonald is 4:46 AM on June 17 and the latest sunrise is 1 hour, 43 minutes later at 6:29 AM on August 31. The latest sunset is 10:03 PM on June 23 and the earliest sunset is 1 hour, 47 minutes earlier at 8:16 PM on August 31. Daylight saving time is observed in Dundonald during 2024, but it neither starts nor ends during the summer, so the entire season is in standard time. For reference, on June 20, the longest day of the year, the Sun rises at 4:46 AM and sets 17 hours, 17 minutes later, at 10:03 PM, while on December 21, the shortest day of the year, it rises at 8:43 AM and sets 7 hours, 15 minutes later, at 3:59 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. MoonThe figure below presents a compact representation of key lunar data for the summer 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. HumidityWe 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 Dundonald is essentially constant during the summer, remaining around 0% throughout. For reference, on July 24, 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. WindThis 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 Dundonald is increasing during the summer, increasing from 11.4 miles per hour to 12.5 miles per hour over the course of the season. For reference, on January 6, the windiest day of the year, the daily average wind speed is 17.7 miles per hour, while on July 23, the calmest day of the year, the daily average wind speed is 10.9 miles per hour. The lowest daily average wind speed during the summer is 10.9 miles per hour on July 26. The wind direction in Dundonald during the summer is predominantly out of the south from June 1 to June 5 and the west from June 5 to August 31. Water TemperatureDundonald 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 Dundonald is increasing during the summer, rising by 6°F, from 51°F to 57°F, over the course of the season. The highest average surface water temperature during the summer is 57°F on August 29. Growing SeasonDefinitions 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 Dundonald typically lasts for 7.4 months (226 days), from around April 3 to around November 15, rarely starting before March 4 or after May 1, and rarely ending before October 20 or after December 17. The summer in Dundonald is reliably fully within the growing season. 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 Dundonald are rapidly increasing during the summer, increasing by 661°F, from 122°F to 783°F, over the course of the season. Solar EnergyThis 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 Dundonald is rapidly decreasing during the summer, falling by 1.7 kWh, from 5.7 kWh to 4.0 kWh, over the course of the season. The highest average daily incident shortwave solar energy during the summer is 5.8 kWh on June 13. TopographyFor the purposes of this report, the geographical coordinates of Dundonald are 54.592 deg latitude, -5.798 deg longitude, and 141 ft elevation. The topography within 2 miles of Dundonald contains significant variations in elevation, with a maximum elevation change of 558 feet and an average elevation above sea level of 254 feet. Within 10 miles contains significant variations in elevation (1,581 feet). Within 50 miles contains very significant variations in elevation (2,785 feet). The area within 2 miles of Dundonald is covered by grassland (40%), cropland (34%), and artificial surfaces (26%), within 10 miles by grassland (39%) and artificial surfaces (25%), and within 50 miles by water (51%) and grassland (36%). Data SourcesThis report illustrates the typical weather in Dundonald, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointThere are 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Dundonald. For each station, the records are corrected for the elevation difference between that station and Dundonald 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 Dundonald is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Dundonald and a given station. The stations contributing to this reconstruction are:
To get a sense of how much these sources agree with each other, you can view a comparison of Dundonald and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. Other DataAll data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com . Maps are © OpenStreetMap contributors. DisclaimerThe information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. Please review our full terms contained on our Terms of Service page. |