Aulnay-sous-Bois Climate & Monthly Temperature Overview – France

Spring and Summer

Spring in Aulnay-sous-Bois, France, begins in March and lasts until May. The average temperature during this season ranges from 46°F (8°C) to 64°F (18°C). The weather is mostly pleasant, with occasional showers. Rainfall is moderate, averaging around 2 inches per month.

Summer, from June to August, brings warm and sunny weather to Aulnay-sous-Bois. Average temperatures range from 68°F (20°C) to 77°F (25°C), with occasional heat waves reaching temperatures over 95°F (35°C). Rainfall is minimal during summer, averaging around 1 inch per month, providing ample opportunities for outdoor activities.

Autumn and Winter

Autumn, spanning September to November, offers milder temperatures in Aulnay-sous-Bois. Average temperatures range from 59°F (15°C) in September to 46°F (8°C) in November. The weather becomes cooler and more humid, with increased rainfall averaging around 2 inches per month.

Winter, from December to February, brings cold and wet weather to Aulnay-sous-Bois. Average temperatures range from 37°F (3°C) to 46°F (8°C), with occasional freezing nights. Precipitation is frequent and occurs mainly in the form of rain, sleet, or snow. Rainfall averages around 2 inches per month, while snowfall is sporadic.

Monthly Average Temperatures

The average temperature in Aulnay-sous-Bois, France, varies significantly throughout the year. The warmest months are July and August, with average temperatures of 20-22°C (68-72°F). The coldest months are January and February, with average temperatures of 2-4°C (36-39°F). Spring and fall are mild, with average temperatures ranging from 8-15°C (46-59°F).

Seasonal Temperature Differences

The temperature range between the warmest and coldest months in Aulnay-sous-Bois is relatively large, indicating a temperate continental climate. Winters can be chilly, with occasional snowfall and frost. Summers are pleasant, with warm temperatures and plenty of sunshine. The transitional seasons, spring and fall, are characterized by mild temperatures and occasional periods of rain or drizzle.

Long-Term Climate Trends

Over the past few decades, there has been a gradual increase in average temperatures in Aulnay-sous-Bois. This trend is consistent with the observed global increase in temperatures due to climate change. As a result, winters have become milder, with fewer days of extreme cold. Summers have also become longer, with periods of hot weather becoming more frequent and intense.

Types of Clouds in Aulnay-sous-Bois, France

Aulnay-sous-Bois, a municipality in the eastern suburbs of Paris, France, experiences a variety of cloud cover throughout the year. The most common cloud types observed include cirrus, cumulus, and stratus clouds. Cirrus clouds are thin, wispy clouds that appear at high altitudes and are composed of ice crystals. They are often seen in the sky during the morning or evening hours and can indicate fair weather. Cumulus clouds, on the other hand, are puffy clouds that form at low to middle altitudes and are associated with fair to partly cloudy conditions. Stratus clouds are low, gray clouds that cover the entire sky and often produce drizzle or light rain.

Seasonal Variations in Cloud Cover

The cloud cover in Aulnay-sous-Bois varies depending on the season. During the spring and summer months, there is typically less cloud cover, with more frequent occurrences of cirrus and cumulus clouds. In contrast, autumn and winter bring increased cloud cover, with more frequent occurrences of stratus clouds. This is due to the influence of the mid-latitude cyclones that bring frequent precipitation to the region during these seasons. Additionally, the presence of the Paris urban heat island can also affect cloud cover patterns, leading to increased cloudiness downwind of the city.

Precipitation Patterns

Aulnay-sous-Bois experiences a temperate oceanic climate characterized by year-round rainfall, with no pronounced dry season. Precipitation is distributed fairly evenly throughout the year, with slight peaks in October and December. The average annual precipitation in Aulnay-sous-Bois is around 650 mm, placing it among the relatively wet areas in France. The wettest months are typically October and November, when the average rainfall exceeds 70 mm. In contrast, the driest months are July and August, when precipitation drops below 50 mm.

Seasonal Variations

Precipitation in Aulnay-sous-Bois exhibits distinct seasonal variations. During the spring and summer months (April to September), rainfall is typically driven by the passage of synoptic-scale weather systems, such as low-pressure areas and cold fronts, which often bring widespread and prolonged showers or thunderstorms. During these months, precipitation is generally more frequent but less intense. In contrast, the autumn and winter months (October to March) are characterized by more persistent rainfall, often associated with mid-latitude cyclones and occlusions. These systems can bring prolonged periods of drizzle or steady rain, leading to higher monthly totals. The average precipitation during the winter months is significantly higher than during the summer months.

Monthly Rainfall Patterns

Aulnay-sous-Bois experiences a temperate maritime climate with moderate rainfall throughout the year. The wettest months are November and December, with average rainfall exceeding 55 millimeters. Conversely, the driest months are June and July, with average rainfall below 45 millimeters.

Seasonal Variations

Rainfall is generally higher during the autumn and winter months, corresponding with periods of increased cloud cover and Atlantic depressions. In spring, rainfall gradually diminishes, while summer months experience relatively dry conditions. The city receives an annual average rainfall of approximately 625 millimeters, distributed fairly evenly throughout the year.

Historical Snowfall

Aulnay-sous-Bois, a suburb of Paris, has a relatively low average snowfall compared to other regions of France. According to historical data, the town experiences an average of only 1 day with measurable snowfall per year. The most significant snowfall event in recent history occurred on February 7-8, 2021, when approximately 20 centimeters of snow fell. This event caused significant disruptions to traffic and public transportation.

Impact of Climate Change

Climate change is expected to have a significant impact on snowfall patterns in Aulnay-sous-Bois. Generally, warmer temperatures lead to less frequent and less intense snowfall. Studies suggest that the frequency of snowfall days is projected to decrease in the future, especially during the winter months. Additionally, the intensity of snowstorms may become more variable, with heavier snowfall events occurring less often but with greater impact. These changes could have implications for infrastructure, transportation, and daily life in the town.

Climate

Aulnay-sous-Bois experiences a temperate oceanic climate, characterized by mild winters and warm summers. The average temperature in January, the coldest month, is around 4°C (39°F), while the average temperature in July, the warmest month, is around 19°C (66°F). Rainfall is spread throughout the year, with an average annual precipitation of around 600 mm (24 in). The city receives an average of 1,700 hours of sunshine per year, making it one of the sunniest places in the Paris region.

Solar Energy

Aulnay-sous-Bois has a significant potential for solar energy production due to its abundant sunshine. The city has installed several solar panels on public buildings and private homes. In 2020, the city launched a solar energy campaign, offering financial incentives to residents and businesses that install solar panels. The city also hosts an annual solar energy festival, which showcases the latest solar technologies and promotes the benefits of solar energy. Aulnay-sous-Bois is committed to becoming a sustainable city, and solar energy plays a key role in this effort.

Moon Phases in Aulnay-sous-Bois

The Moon’s appearance changes throughout the month in Aulnay-sous-Bois, France, as it orbits the Earth. The most common Moon phases observed are the new Moon, crescent Moon, first quarter, gibbous Moon, full Moon, and waning gibbous. The new Moon occurs when the Moon is between the Earth and the Sun, rendering it invisible from Earth. The other phases occur as the Moon gradually moves around the Earth.

Lunar Eclipses in Aulnay-sous-Bois

Lunar eclipses occur when the Earth’s shadow falls on the Moon, blocking the Sun’s light from reaching it. In Aulnay-sous-Bois, lunar eclipses are often visible to the naked eye, depending on the time of year and weather conditions. Lunar eclipses are classified into three types: total, partial, and penumbral. Total lunar eclipses are the most dramatic, as the entire Moon is covered by the Earth’s shadow, causing it to turn a deep red color. Partial lunar eclipses occur when only part of the Moon is covered by the Earth’s shadow. Penumbral lunar eclipses are less noticeable, as the Moon only passes through the Earth’s penumbra, a less dense region of the shadow.

Average Humidity in Aulnay-sous-Bois, France

Aulnay-sous-Bois, located in the northern suburbs of Paris, experiences a moderate humid climate throughout the year. The average relative humidity ranges from around 70% in the summer months to 85% in the winter. Although the humidity levels are not excessive, they can contribute to a feeling of discomfort, especially during the hot summer months.

Seasonal Variations in Humidity

Humidity levels in Aulnay-sous-Bois exhibit seasonal variations. The highest humidity occurs during the winter months, when temperatures drop and the air holds less moisture. In January, the average relative humidity can reach up to 85%. During the summer months, the humidity decreases as temperatures rise and the air can hold more moisture. In July, the average relative humidity drops to around 70%. These seasonal changes in humidity can affect the comfort level of residents, as well as their energy consumption for heating and cooling.

Wind Patterns

Aulnay-sous-Bois is located in the Paris Basin, a relatively flat region of northern France. As a result, the city experiences predominantly westerly winds, which originate over the Atlantic Ocean and bring moist air to the area. These winds are strongest during the winter months, when they can reach speeds of up to 30 kilometers per hour (19 miles per hour). In the summer, winds are generally lighter and come from a more variable direction.

Seasonal Variations

The strength and direction of the wind in Aulnay-sous-Bois also vary depending on the time of year. During the spring and autumn, winds tend to be stronger and more variable in direction. This is because these seasons are characterized by frequent changes in atmospheric pressure and temperature, which can lead to the development of strong winds. In the winter, winds are typically more consistent in direction and speed, as the atmosphere is generally more stable.

Spring (March-May)

Springtime in Aulnay-sous-Bois offers pleasant temperatures and a vibrant atmosphere. The average temperature in March is 45 degrees Fahrenheit, but it rises to a comfortable 60 degrees Fahrenheit by May. As the days lengthen and flowers bloom, the city comes alive with an abundance of outdoor activities. Visitors can stroll through the picturesque Parc Georges Valbon or explore the lively streets of the city center, where charming cafes and boutiques beckon. While there may be occasional showers, the weather is generally favorable for sightseeing and enjoying the outdoors.

Summer (June-August)

The summer months are the warmest of the year in Aulnay-sous-Bois, with average temperatures reaching highs of 75 degrees Fahrenheit. Although it can be humid at times, the city offers plenty of opportunities to escape the heat. Visitors can seek respite in the air-conditioned comfort of the Air & Cosmos Museum or cool off at one of the city’s outdoor pools. Sunset is a magical time in the city, as the sky transforms into a vibrant canvas of oranges, pinks, and purples. With long days that gradually shorten towards the end of August, summer provides ample time for both daytime and evening activities, making it an ideal season to experience all that Aulnay-sous-Bois has to offer.

Solar Energy Potential

Aulnay-sous-Bois, a city in the northeastern suburbs of Paris, France, boasts considerable solar energy potential due to its favorable geographical location. The city experiences relatively high levels of sunshine throughout the year, with an average of over 2,000 hours of sunlight annually. Additionally, Aulnay-sous-Bois has ample undeveloped land, including rooftops, parking lots, and open fields, which provide suitable sites for solar installations. These factors make the city well-positioned to harness solar energy and make a significant contribution to its renewable energy portfolio.

Solar Energy Initiatives

Recognizing the potential of solar energy, Aulnay-sous-Bois has implemented a number of initiatives to promote its development. The city has established a partnership with the local energy supplier, Électricité de France (EDF), to install solar panels on public buildings, schools, and municipal facilities. In addition, Aulnay-sous-Bois offers various incentives and support programs to encourage businesses and residents to adopt solar energy. These programs include financial assistance, technical guidance, and streamlined permitting processes. As a result, the city has seen a steady increase in the deployment of solar panels in recent years, contributing to its transition towards a more sustainable energy future.

Hills of Chelles

The only prominent area of topography in Aulnay-sous-Bois is the hills of Chelles, which rise to a height of approximately 180 meters (590 feet). These hills offer panoramic views of the surrounding countryside and are known for their chalky cliffs and caves, some of which have been designated as protected natural sites. The hills also feature several hiking trails, including the GR11, which runs along the ridge line.

East-West Valleys

Aulnay-sous-Bois is characterized by a series of east-west oriented valleys that were formed by erosion over time. These valleys separate the city’s neighborhoods and provide natural drainage for the area. The largest of these valleys is the valley of the Ru de Montfermeil, which runs through the center of the city. Other notable valleys include the valley of the Ru des Hauldres and the valley of the Ru des Grands Prés.

Nearest Airport to Aulnay-sous-Bois, France

The nearest airport to Aulnay-sous-Bois, France, is Paris-Charles de Gaulle Airport (CDG), located approximately 15 kilometers (9 miles) to the northeast. It is the largest and busiest airport in France, handling over 70 million passengers annually. CDG is a major hub for Air France and serves as a gateway to destinations across Europe, the Middle East, Asia, and North America. The airport offers a wide range of amenities, including numerous shops, restaurants, lounges, and transportation options.

Alternatively, Paris-Orly Airport (ORY) is located approximately 20 kilometers (12 miles) to the south of Aulnay-sous-Bois. It is the second largest airport in France, handling over 30 million passengers annually. ORY is a hub for Air France, Transavia, and EasyJet, and offers flights to destinations throughout Europe, North Africa, the Middle East, and the Caribbean. ORY also provides a variety of amenities, including shops, restaurants, lounges, and transportation options.

Historical and Cultural Heritage

Aulnay-sous-Bois is steeped in history and boasts a rich cultural heritage. It was first mentioned in the 8th century and played a significant role in the defense of Paris during the Hundred Years’ War. The town is home to several historical landmarks, including the 12th-century Saint-Sulpice Church and the Renaissance-style Château de la Barre, which now houses the town hall. Aulnay-sous-Bois is also known for its street art, which adorns many of its buildings and streets, adding vibrancy and character to the urban landscape.

Modern and Dynamic City

Today, Aulnay-sous-Bois is a modern and dynamic city with a population of over 80,000. It is part of the Paris metropolitan area and is well-connected by public transportation. The city is home to a large commercial and industrial zone, which is one of the main economic drivers in the region. Aulnay-sous-Bois also boasts numerous parks and green spaces, including the Parc Forestier de la Poudrerie and the Parc du Sausset, providing ample opportunities for leisure and relaxation. The city is constantly evolving and investing in its infrastructure, making it an attractive place to live, work, and visit.