October Weather at Plymouth United Kingdom

Daily high temperatures decrease by 6°F, from 61°F to 55°F, rarely falling below 50°F or exceeding 65°F.

Daily low temperatures decrease by 4°F, from 51°F to 47°F, rarely falling below 39°F or exceeding 58°F.

For reference, on July 28, the hottest day of the year, temperatures at Plymouth typically range from 57°F to 67°F, while on February 18, the coldest day of the year, they range from 39°F to 47°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. 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.

Ocean Park, United States (4,854 miles away) is the far-away foreign place with temperatures most similar to Plymouth (view comparison).

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The month of October at Plymouth experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 51% to 59%.

The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 49% of the time.

For reference, on December 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 66%, while on July 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 57%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Plymouth, the chance of a wet day over the course of October is very rapidly increasing, starting the month at 34% and ending it at 42%.

For reference, the year's highest daily chance of a wet day is 46% on January 6, and its lowest chance is 22% on July 23.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during October at Plymouth is increasing, starting the month at 2.9 inches, when it rarely exceeds 4.9 inches or falls below 1.2 inches, and ending the month at 3.6 inches, when it rarely exceeds 5.8 inches or falls below 1.5 inches.

Over the course of October at Plymouth, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 49 minutes, implying an average daily decrease of 3 minutes, 38 seconds, and weekly decrease of 25 minutes, 29 seconds.

The shortest day of the month is October 31, with 9 hours, 47 minutes of daylight and the longest day is October 1, with 11 hours, 37 minutes of daylight.

The latest sunrise of the month at Plymouth is 7:57 AM on October 26 and the earliest sunrise is 58 minutes earlier at 6:59 AM on October 27.

The latest sunset is 6:53 PM on October 1 and the earliest sunset is 2 hours, 0 minutes earlier at 4:53 PM on October 31.

Daylight saving time (DST) starts at 1:00 AM on October 27, 2024, shifting sunrise and sunset to be an hour later.

For reference, on June 20, the longest day of the year, the Sun rises at 5:05 AM and sets 16 hours, 26 minutes later, at 9:31 PM, while on December 21, the shortest day of the year, it rises at 8:14 AM and sets 8 hours, 1 minute later, at 4:15 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 October 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 at Plymouth is essentially constant during October, remaining around 0% throughout.

For reference, on August 14, the muggiest day of the year, there are muggy conditions 1% 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 at Plymouth is rapidly increasing during October, increasing from 13.7 miles per hour to 15.7 miles per hour over the course of the month.

For reference, on January 1, the windiest day of the year, the daily average wind speed is 17.6 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 11.4 miles per hour.

The hourly average wind direction at Plymouth throughout October is predominantly from the west, with a peak proportion of 35% on October 31.

Plymouth 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 at Plymouth is gradually decreasing during October, falling by 3°F, from 60°F to 57°F, over the course of the month.

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 at Plymouth typically lasts for 9.0 months (277 days), from around March 6 to around December 7, rarely starting before February 7 or after April 10, and rarely ending before November 12 or after January 5.

The month of October at Plymouth 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 at Plymouth are gradually increasing during October, increasing by 141°F, from 1,400°F to 1,541°F, over the course of the month.

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 at Plymouth is decreasing during October, falling by 1.4 kWh, from 3.0 kWh to 1.6 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Plymouth are 50.350 deg latitude, -4.117 deg longitude, and 243 ft elevation.

The topography within 2 miles of Plymouth contains only modest variations in elevation, with a maximum elevation change of 407 feet and an average elevation above sea level of 110 feet. Within 10 miles contains only modest variations in elevation (1,670 feet). Within 50 miles contains very significant variations in elevation (2,133 feet).

The area within 2 miles of Plymouth is covered by artificial surfaces (34%), water (33%), cropland (16%), and grassland (12%), within 10 miles by water (42%) and cropland (22%), and within 50 miles by water (58%) and grassland (18%).