July Weather at La Roche-sur-Yon - Les Ajoncs France

Daily high temperatures increase by 3°F, from 74°F to 76°F, rarely falling below 65°F or exceeding 87°F.

Daily low temperatures are around 57°F, rarely falling below 50°F or exceeding 63°F.

For reference, on August 3, the hottest day of the year, temperatures at La Roche-sur-Yon - Les Ajoncs typically range from 57°F to 76°F, while on February 8, the coldest day of the year, they range from 36°F to 48°F.

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

Seattle, United States (5,019 miles away) is the far-away foreign place with temperatures most similar to La Roche-sur-Yon - Les Ajoncs (view comparison).

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The month of July at La Roche-sur-Yon - Les Ajoncs experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 33% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 31% on July 23.

The clearest day of the month is July 23, with clear, mostly clear, or partly cloudy conditions 69% of the time.

For reference, on January 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 67%, while on July 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 69%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At La Roche-sur-Yon - Les Ajoncs, the chance of a wet day over the course of July is gradually decreasing, starting the month at 18% and ending it at 16%.

For reference, the year's highest daily chance of a wet day is 35% on December 28, and its lowest chance is 15% on August 22.

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 July at La Roche-sur-Yon - Les Ajoncs is essentially constant, remaining about 1.2 inches throughout, and rarely exceeding 2.3 inches or falling below 0.2 inches.

Over the course of July at La Roche-sur-Yon - Les Ajoncs, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 54 minutes, implying an average daily decrease of 1 minute, 48 seconds, and weekly decrease of 12 minutes, 34 seconds.

The shortest day of the month is July 31, with 14 hours, 53 minutes of daylight and the longest day is July 1, with 15 hours, 47 minutes of daylight.

The earliest sunrise of the month at La Roche-sur-Yon - Les Ajoncs is 6:15 AM on July 1 and the latest sunrise is 29 minutes later at 6:45 AM on July 31.

The latest sunset is 10:02 PM on July 1 and the earliest sunset is 25 minutes earlier at 9:37 PM on July 31.

Daylight saving time is observed at La Roche-sur-Yon - Les Ajoncs during 2024, but it neither starts nor ends during July, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 6:11 AM and sets 15 hours, 51 minutes later, at 10:02 PM, while on December 21, the shortest day of the year, it rises at 8:47 AM and sets 8 hours, 33 minutes later, at 5:20 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 July 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 La Roche-sur-Yon - Les Ajoncs is gradually increasing during July, rising from 4% to 7% over the course of the month.

For reference, on August 2, the muggiest day of the year, there are muggy conditions 7% of the time, while on November 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 La Roche-sur-Yon - Les Ajoncs is gradually decreasing during July, decreasing from 9.5 miles per hour to 8.7 miles per hour over the course of the month.

For reference, on December 21, the windiest day of the year, the daily average wind speed is 12.2 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 8.6 miles per hour.

The hourly average wind direction at La Roche-sur-Yon - Les Ajoncs throughout July is predominantly from the west, with a peak proportion of 47% on July 10.

La Roche-sur-Yon - Les Ajoncs 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 La Roche-sur-Yon - Les Ajoncs is gradually increasing during July, rising by 2°F, from 64°F to 67°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 La Roche-sur-Yon - Les Ajoncs typically lasts for 7.9 months (242 days), from around March 26 to around November 23, rarely starting before February 23 or after April 18, and rarely ending before November 1 or after December 27.

The month of July at La Roche-sur-Yon - Les Ajoncs 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 La Roche-sur-Yon - Les Ajoncs are rapidly increasing during July, increasing by 485°F, from 817°F to 1,301°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 La Roche-sur-Yon - Les Ajoncs is essentially constant during July, remaining within 0.2 kWh of 6.8 kWh throughout.

The highest average daily incident shortwave solar energy during July is 7.1 kWh on July 7.

For the purposes of this report, the geographical coordinates of La Roche-sur-Yon - Les Ajoncs are 46.702 deg latitude, -1.379 deg longitude, and 295 ft elevation.

The topography within 2 miles of La Roche-sur-Yon - Les Ajoncs contains only modest variations in elevation, with a maximum elevation change of 249 feet and an average elevation above sea level of 252 feet. Within 10 miles also contains only modest variations in elevation (328 feet). Within 50 miles contains only modest variations in elevation (1,207 feet).

The area within 2 miles of La Roche-sur-Yon - Les Ajoncs is covered by cropland (55%) and grassland (25%), within 10 miles by cropland (66%) and grassland (22%), and within 50 miles by cropland (48%) and water (27%).