Average Weather in May in Castrillón Spain
Daily high temperatures increase by 4°F, from 61°F to 65°F, rarely falling below 54°F or exceeding 71°F.
Daily low temperatures increase by 5°F, from 49°F to 54°F, rarely falling below 44°F or exceeding 58°F.
For reference, on August 7, the hottest day of the year, temperatures in Castrillón typically range from 61°F to 72°F, while on February 7, the coldest day of the year, they range from 43°F to 55°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 Castrillón experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 51% to 45%.
The clearest day of the month is May 30, with clear, mostly clear, or partly cloudy conditions 55% of the time.
For reference, on November 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 59%, while on July 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 77%.
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 Castrillón, the chance of a wet day over the course of May is very rapidly decreasing, starting the month at 32% and ending it at 23%.
For reference, the year's highest daily chance of a wet day is 40% on November 23, and its lowest chance is 11% on July 20.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Castrillón is decreasing, starting the month at 2.2 inches, when it rarely exceeds 3.7 inches or falls below 0.8 inches, and ending the month at 1.5 inches, when it rarely exceeds 2.7 inches or falls below 0.4 inches.
Average Monthly Rainfall in May
Over the course of May in Castrillón, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 2 minutes, implying an average daily increase of 2 minutes, 3 seconds, and weekly increase of 14 minutes, 22 seconds.
The shortest day of the month is May 1, with 14 hours, 10 minutes of daylight and the longest day is May 31, with 15 hours, 11 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Castrillón is 7:16 AM on May 1 and the earliest sunrise is 30 minutes earlier at 6:46 AM on May 31.
The earliest sunset is 9:26 PM on May 1 and the latest sunset is 31 minutes later at 9:57 PM on May 31.
Daylight saving time is observed in Castrillón 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 6:42 AM and sets 15 hours, 26 minutes later, at 10:08 PM, while on December 21, the shortest day of the year, it rises at 8:53 AM and sets 8 hours, 56 minutes later, at 5:50 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 Castrillón is essentially constant during May, remaining around 0% throughout.
For reference, on August 13, the muggiest day of the year, there are muggy conditions 7% of the time, while on November 14, 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 Castrillón is gradually decreasing during May, decreasing from 8.4 miles per hour to 7.5 miles per hour over the course of the month.
For reference, on December 29, the windiest day of the year, the daily average wind speed is 10.8 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 7.2 miles per hour.
Average Wind Speed in May
The wind direction in Castrillón during May is predominantly out of the west from May 1 to May 28 and the east from May 28 to May 31.
Wind Direction in May
Castrillón 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 Castrillón is gradually increasing during May, rising by 3°F, from 56°F to 60°F, over the course of the month.
Average Water Temperature in May
While it does not do so every year, freezing temperatures are seen in Castrillón over some winters. The day least likely to be in the growing season is January 16, with a 67% chance.
Time Spent in Various Temperature Bands and the Growing Season in May
The average accumulated growing degree days in Castrillón are increasing during May, increasing by 213°F, from 331°F to 544°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Castrillón is increasing during May, rising by 1.0 kWh, from 5.7 kWh to 6.7 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 Castrillón are 43.548 deg latitude, -5.994 deg longitude, and 371 ft elevation.
The topography within 2 miles of Castrillón contains very significant variations in elevation, with a maximum elevation change of 965 feet and an average elevation above sea level of 310 feet. Within 10 miles contains very significant variations in elevation (2,014 feet). Within 50 miles contains large variations in elevation (7,858 feet).
The area within 2 miles of Castrillón is covered by grassland (57%) and trees (39%), within 10 miles by water (33%) and grassland (29%), and within 50 miles by water (50%) and trees (20%).
This report illustrates the typical weather in Castrillón, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Castrillón.
For each station, the records are corrected for the elevation difference between that station and Castrillón 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 Castrillón is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Castrillón and a given station.
Time zones for airports and weather stations are provided by AskGeo.com .