Average Weather in Deganwy United Kingdom
In Deganwy, the summers are cool and partly cloudy and the winters are long, very cold, wet, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 38°F to 66°F and is rarely below 29°F or above 74°F.
The warm season lasts for 3.1 months, from June 13 to September 18, with an average daily high temperature above 62°F. The hottest day of the year is August 2, with an average high of 66°F and low of 56°F.
The cool season lasts for 4.1 months, from November 23 to March 26, with an average daily high temperature below 49°F. The coldest day of the year is February 17, with an average low of 38°F and high of 45°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, 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 Deganwy, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Deganwy begins around April 20 and lasts for 5.6 months, ending around October 7. On July 15, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 53% of the time, and overcast or mostly cloudy 47% of the time.
The cloudier part of the year begins around October 7 and lasts for 6.4 months, ending around April 20. On January 26, the cloudiest day of the year, the sky is overcast or mostly cloudy 69% of the time, and clear, mostly clear, or partly cloudy 31% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Deganwy varies throughout the year.
The wetter season lasts 4.6 months, from September 21 to February 8, with a greater than 38% chance of a given day being a wet day. The chance of a wet day peaks at 49% on January 1.
The drier season lasts 7.4 months, from February 8 to September 21. The smallest chance of a wet day is 26% on April 23.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 49% on November 3.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Deganwy experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Deganwy. The most rain falls during the 31 days centered around November 10, with an average total accumulation of 3.6 inches.
The least rain falls around April 27, with an average total accumulation of 1.7 inches.
Average Monthly Rainfall
The length of the day in Deganwy varies extremely over the course of the year. In 2017, the shortest day is December 21, with 7 hours, 30 minutes of daylight; the longest day is June 21, with 16 hours, 60 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:46 AM on June 17, and the latest sunrise is 3 hours, 44 minutes later at 8:30 AM on December 29. The earliest sunset is at 3:56 PM on December 13, and the latest sunset is 5 hours, 51 minutes later at 9:47 PM on June 24.
Daylight saving time (DST) is observed in Deganwy during 2017, starting in the spring on March 26, lasting 7.1 months, and ending in the fall on October 29.
Sunrise & Sunset with Twilight and Daylight Saving Time
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 perceived humidity level in Deganwy, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
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 Deganwy experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 5.4 months, from October 10 to March 23, with average wind speeds of more than 13.1 miles per hour. The windiest day of the year is January 3, with an average hourly wind speed of 16.2 miles per hour.
The calmer time of year lasts for 6.6 months, from March 23 to October 10. The calmest day of the year is June 14, with an average hourly wind speed of 10.0 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Deganwy varies throughout the year.
The wind is most often from the south for 2.1 weeks, from April 24 to May 9 and for 1.4 weeks, from October 5 to October 15, with a peak percentage of 36% on October 12. The wind is most often from the west for 4.9 months, from May 9 to October 5 and for 6.3 months, from October 15 to April 24, with a peak percentage of 44% on July 3.
Deganwy 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 water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.2 months, from July 1 to October 9, with an average temperature above 58°F. The day of the year with the warmest water is August 21, with an average temperature of 61°F.
The time of year with cooler water lasts for 3.6 months, from December 30 to April 18, with an average temperature below 47°F. The day of the year with the coolest water is March 1, with an average temperature of 44°F.
Average Water Temperature
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 experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.3 months, from May 2 to August 13, with an average daily incident shortwave energy per square meter above 5.0 kWh. The brightest day of the year is June 22, with an average of 6.2 kWh.
The darker period of the year lasts for 4.0 months, from October 23 to February 22, with an average daily incident shortwave energy per square meter below 1.6 kWh. The darkest day of the year is December 25, with an average of 0.5 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Deganwy are 53.304 deg latitude, -3.827 deg longitude, and 26 ft elevation.
The topography within 2 miles of Deganwy contains significant variations in elevation, with a maximum elevation change of 614 feet and an average elevation above sea level of 80 feet. Within 10 miles contains significant variations in elevation (3,091 feet). Within 50 miles contains large variations in elevation (3,494 feet).
The area within 2 miles of Deganwy is covered by artificial surfaces (33%), water (28%), and grassland (19%), within 10 miles by water (58%) and grassland (26%), and within 50 miles by water (54%) and grassland (24%).
This report illustrates the typical weather in Deganwy, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Deganwy.
For each station, the records are corrected for the elevation difference between that station and Deganwy 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 Deganwy is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Deganwy and a given station.
The stations contributing to this reconstruction are: Royal Air Force Valley (39%, 48 kilometers, west); Hawarden (29%, 58 kilometers, east); Blackpool Airport (20%, 74 kilometers, northeast); and Isle Of Man / Ronaldsway Airport (12%, 101 kilometers, northwest).
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.
The 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.