Spring Weather in Chepstow United Kingdom

Daily high temperatures increase by 16°F, from 48°F to 63°F, rarely falling below 40°F or exceeding 72°F.

Daily low temperatures increase by 12°F, from 38°F to 50°F, rarely falling below 30°F or exceeding 55°F.

For reference, on July 24, the hottest day of the year, temperatures in Chepstow typically range from 56°F to 70°F, while on February 7, the coldest day of the year, they range from 37°F to 45°F.

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

Sequim, United States (4,708 miles away) is the far-away foreign place with temperatures most similar to Chepstow (view comparison).

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The spring in Chepstow experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 64% to 51%.

The clearest day of the spring is May 31, with clear, mostly clear, or partly cloudy conditions 49% of the time.

For reference, on December 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 70%, while on July 14, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 58%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Chepstow, the chance of a wet day over the course of the spring is gradually increasing, starting the season at 24% and ending it at 27%.

For reference, the year's highest daily chance of a wet day is 37% on December 29, and its lowest chance is 22% on April 27.

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 spring in Chepstow is essentially constant, remaining about 1.6 inches throughout, and rarely exceeding 3.0 inches or falling below 0.3 inches.

The lowest average 31-day accumulation is 1.5 inches on April 16.

Over the course of the spring in Chepstow, 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 5 hours, 23 minutes, implying an average daily increase of 3 minutes, 33 seconds, and weekly increase of 24 minutes, 51 seconds.

The shortest day of the spring is March 1, with 10 hours, 57 minutes of daylight and the longest day is May 31, with 16 hours, 20 minutes of daylight.

The latest sunrise of the spring in Chepstow is 6:55 AM on March 1 and the earliest sunrise is 1 hour, 56 minutes earlier at 4:59 AM on May 31.

The earliest sunset is 5:51 PM on March 1 and the latest sunset is 3 hours, 27 minutes later at 9:18 PM on May 31.

Daylight saving time (DST) ends at 2:00 AM on March 31, 2024, shifting sunrise and sunset to be an hour earlier.

For reference, on June 20, the longest day of the year, the Sun rises at 4:52 AM and sets 16 hours, 40 minutes later, at 9:32 PM, while on December 21, the shortest day of the year, it rises at 8:14 AM and sets 7 hours, 48 minutes later, at 4:03 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 spring 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 Chepstow is essentially constant during the spring, remaining around 0% throughout.

For reference, on August 9, 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 Chepstow is rapidly decreasing during the spring, decreasing from 12.3 miles per hour to 10.0 miles per hour over the course of the season.

For reference, on January 3, the windiest day of the year, the daily average wind speed is 13.5 miles per hour, while on August 2, the calmest day of the year, the daily average wind speed is 9.8 miles per hour.

The hourly average wind direction in Chepstow throughout the spring is predominantly from the west, with a peak proportion of 38% on March 7.

Chepstow 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 Chepstow is very rapidly increasing during the spring, rising by 11°F, from 45°F to 56°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 Chepstow typically lasts for 8.6 months (264 days), from around March 15 to around December 3, rarely starting before February 6 or after April 19, and rarely ending before November 1 or after December 31.

During the spring in Chepstow, the chance that a given day is within the growing season is very rapidly increasing rising from 34% to 100% over the course of the 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 Chepstow are increasing during the spring, increasing by 230°F, from 10°F to 240°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 Chepstow is very rapidly increasing during the spring, rising by 3.8 kWh, from 2.2 kWh to 6.0 kWh, over the course of the season.

For the purposes of this report, the geographical coordinates of Chepstow are 51.641 deg latitude, -2.677 deg longitude, and 148 ft elevation.

The topography within 2 miles of Chepstow contains significant variations in elevation, with a maximum elevation change of 522 feet and an average elevation above sea level of 158 feet. Within 10 miles contains significant variations in elevation (1,083 feet). Within 50 miles contains very significant variations in elevation (2,927 feet).

The area within 2 miles of Chepstow is covered by cropland (34%), artificial surfaces (21%), grassland (19%), and trees (17%), within 10 miles by cropland (32%) and grassland (28%), and within 50 miles by grassland (38%) and cropland (36%).