Average Weather in May in Illán de Vacas Spain
Daily high temperatures increase by 10°F, from 70°F to 80°F, rarely falling below 59°F or exceeding 91°F.
Daily low temperatures increase by 8°F, from 48°F to 56°F, rarely falling below 42°F or exceeding 62°F.
For reference, on July 22, the hottest day of the year, temperatures in Illán de Vacas typically range from 66°F to 94°F, while on January 15, the coldest day of the year, they range from 34°F to 52°F.
Average High and Low Temperature in May
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. 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 May
The month of May in Illán de Vacas experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 39% to 34%.
The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 66% of the time.
For reference, on December 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 50%, while on July 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 89%.
Cloud Cover Categories in May
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Illán de Vacas, the chance of a wet day over the course of May is decreasing, starting the month at 20% and ending it at 15%.
For reference, the year's highest daily chance of a wet day is 23% on October 31, and its lowest chance is 3% on August 1.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Illán de Vacas is essentially constant, remaining about 1.1 inches throughout, and rarely exceeding 2.6 inches or falling below 0.1 inches.
The highest average 31-day accumulation is 1.2 inches on May 11.
Average Monthly Rainfall in May
Over the course of May in Illán de Vacas, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 54 minutes, implying an average daily increase of 1 minute, 47 seconds, and weekly increase of 12 minutes, 30 seconds.
The shortest day of the month is May 1, with 13 hours, 55 minutes of daylight and the longest day is May 31, with 14 hours, 48 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Illán de Vacas is 7:18 AM on May 1 and the earliest sunrise is 26 minutes earlier at 6:51 AM on May 31.
The earliest sunset is 9:13 PM on May 1 and the latest sunset is 27 minutes later at 9:40 PM on May 31.
Daylight saving time is observed in Illán de Vacas during 2021, but it neither starts nor ends during May, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 6:49 AM and sets 15 hours, 1 minute later, at 9:50 PM, while on December 21, the shortest day of the year, it rises at 8:36 AM and sets 9 hours, 20 minutes later, at 5:56 PM.
Sunrise & Sunset with Twilight in May
The figure below presents a compact representation of key lunar data for May 2021. 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.
Moon Rise, Set & Phases in May
The chance that a given day will be muggy in Illán de Vacas is essentially constant during May, remaining around 0% throughout.
For reference, on July 26, 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.
Humidity Comfort Levels in May
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Illán de Vacas is essentially constant during May, remaining within 0.2 miles per hour of 7.7 miles per hour throughout.
For reference, on April 7, the windiest day of the year, the daily average wind speed is 8.5 miles per hour, while on September 16, the calmest day of the year, the daily average wind speed is 6.9 miles per hour.
Average Wind Speed in May
The hourly average wind direction in Illán de Vacas throughout May is predominantly from the west, with a peak proportion of 45% on May 27.
Wind Direction in May
The growing season in Illán de Vacas typically lasts for 8.5 months (259 days), from around March 7 to around November 21, rarely starting before February 13 or after March 29, and rarely ending before November 3 or after December 11.
The month of May in Illán de Vacas is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in May
The average accumulated growing degree days in Illán de Vacas are increasing during May, increasing by 419°F, from 451°F to 870°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Illán de Vacas is gradually increasing during May, rising by 1.0 kWh, from 6.7 kWh to 7.7 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in May
For the purposes of this report, the geographical coordinates of Illán de Vacas are 39.971 deg latitude, -4.557 deg longitude, and 1,575 ft elevation.
The topography within 2 miles of Illán de Vacas contains only modest variations in elevation, with a maximum elevation change of 400 feet and an average elevation above sea level of 1,587 feet. Within 10 miles contains only modest variations in elevation (787 feet). Within 50 miles contains significant variations in elevation (7,451 feet).
The area within 2 miles of Illán de Vacas is covered by cropland (98%), within 10 miles by cropland (86%), and within 50 miles by cropland (47%) and trees (24%).
This report illustrates the typical weather in Illán de Vacas, 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 Illán de Vacas.
For each station, the records are corrected for the elevation difference between that station and Illán de Vacas 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 Illán de Vacas is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Illán de Vacas and a given station.
The stations contributing to this reconstruction are: Adolfo Suárez Madrid–Barajas Airport (42%, 102 kilometers, northeast); Ciudad Real Central Airport (32%, 123 kilometers, southeast); and Salamanca Airport (27%, 135 kilometers, northwest).
Time zones for airports and weather stations are provided by AskGeo.com .