Santa Rosa Climate & Monthly Temperature Overview – Argentina

Climate Summary

Santa Rosa enjoys a temperate semi-arid climate with four distinct seasons. Summers (December to February) are hot and dry, with average temperatures ranging from 25-29°C (77-84°F). January is the warmest month, with maximum temperatures occasionally exceeding 35°C (95°F). Winters (June to August) are mild to cool, with average temperatures between 5-10°C (41-50°F). July is the coldest month, with minimum temperatures sometimes dipping below freezing.

Average Weather Year Round

Spring (September to November): Spring brings warm and sunny weather, with average temperatures rising from 10-15°C (50-59°F) in September to 15-20°C (59-68°F) in November. October and November experience the most rainfall of the year, with occasional thunderstorms.

Summer (December to February): Summers are hot and dry, with minimal precipitation. Average temperatures range from 25-29°C (77-84°F), while maximum temperatures can reach 35°C (95°F) or higher. Nights remain warm, with temperatures typically staying above 20°C (68°F).

Autumn (March to May): Autumn brings milder temperatures, with averages gradually declining from 20-15°C (68-59°F) in March to 10-15°C (50-59°F) in May. Precipitation decreases, with occasional showers becoming less frequent towards the end of the season.

Winter (June to August): Winters are mild and dry, with average temperatures ranging from 5-10°C (41-50°F). July is the coldest month, with minimum temperatures occasionally dropping below 0°C (32°F). Snowfall is extremely rare, and the skies are often clear and sunny during the day.

Temperature Extremes

Santa Rosa, Argentina, experiences significant temperature variations throughout the year. The hottest months are December, January, and February, with average daily temperatures ranging from 26°C to 32°C (79°F to 90°F). During these months, temperatures can soar as high as 40°C (104°F) on occasion. Conversely, the coldest months are June, July, and August, with average daily temperatures dropping to 7°C to 11°C (45°F to 52°F). During this period, temperatures can plummet as low as -5°C (23°F) in some instances.

Seasonal Variations

Santa Rosa’s climate is characterized by distinct seasonal changes. Summers are typically hot and humid, with frequent thunderstorms. Winter, on the other hand, brings cooler temperatures and occasional rainfall. The spring and autumn months provide a pleasant transition between the extremes, with warm and dry conditions prevailing. The city’s semi-arid climate means that annual precipitation is relatively low, averaging around 600 millimeters (24 inches) per year. This precipitation is primarily concentrated during the summer months.

Cloud Types in Santa Rosa, Argentina

Santa Rosa, Argentina, experiences a variety of cloud types throughout the year. The most common clouds are cirrus, cumulus, and stratus clouds. Cirrus clouds are thin, wispy clouds that are composed of ice crystals. They are often seen on clear days and can indicate fair weather. Cumulus clouds are puffy clouds that are associated with fair weather. They are often seen in the summer and can produce rain or snow showers. Stratus clouds are flat, gray clouds that cover the entire sky. They are often seen in the winter and can produce drizzle or light rain.

Influence of Climate on Cloud Formation

The climate of Santa Rosa has a significant influence on the formation of clouds. The city is located in a temperate climate zone, which is characterized by warm summers and cool winters. The average annual temperature is 14 degrees Celsius (57 degrees Fahrenheit). The average annual precipitation is 800 millimeters (31 inches). The climate of Santa Rosa is also influenced by the presence of the Andes Mountains. The mountains block the flow of moist air from the Pacific Ocean, which results in a drier climate than in other parts of Argentina.

Precipitation Patterns

Santa Rosa, Argentina experiences a temperate seasonal climate with distinct periods of rainfall and drought. The city’s precipitation is characterized by a wet season from October to March and a dry season from April to September. During the wet season, Santa Rosa receives the majority of its annual precipitation, with an average monthly rainfall of around 90 mm. The rainiest months are January and February, which typically receive over 100 mm of rainfall each. In contrast, the dry season is marked by much lower rainfall, with average monthly precipitation dropping below 20 mm. The driest months are June and July, which often see less than 10 mm of rainfall.

Factors Influencing Precipitation

The precipitation patterns in Santa Rosa are largely influenced by the city’s location in the rain shadow of the Andes Mountains. The Andes act as a barrier, blocking moist air from the Pacific Ocean from reaching Santa Rosa. As a result, the city receives significantly less precipitation than other regions of Argentina located on the windward side of the mountains. Additionally, the city’s distance from the Atlantic Ocean also plays a role in shaping its precipitation patterns. Santa Rosa is located far enough away from the ocean that it does not receive much of the moisture-laden air that blows in from the east. This further contributes to the city’s relatively low precipitation levels.

Seasonal Patterns

Santa Rosa, Argentina, experiences a humid subtropical climate characterized by distinct seasonal rainfall patterns. The wet season typically runs from October to March, with January receiving the highest precipitation, averaging around 110 mm. During this period, frequent rains and occasional thunderstorms contribute significantly to the city’s annual rainfall. The dry season, from April to September, sees a marked decrease in rainfall, with monthly averages below 30 mm. August is generally the driest month, with precipitation often dropping below 10 mm.

Annual Variability

The annual rainfall in Santa Rosa exhibits moderate variability. While the average annual rainfall for the period 1981-2010 was 892 mm, there have been significant deviations from this mean. In exceptionally wet years, such as 2017, annual precipitation surpassed 1200 mm. Conversely, in dry years, such as 2009, it fell below 600 mm. This variability is influenced by large-scale atmospheric phenomena, including El Niño and La Niña events, which can alter rainfall patterns and lead to extreme weather events.

Snowfall in Santa Rosa, Argentina

Snowfall is a rare occurrence in Santa Rosa, Argentina. Located in the province of La Pampa, this city experiences a humid subtropical climate characterized by hot summers and mild winters. The average annual temperature is 16°C (61°F), with January being the warmest month and July the coldest.

While snowfall is not common in Santa Rosa, it does occasionally occur. The last significant snowfall event occurred in 2007, when the city was blanketed in several inches of snow. Prior to that, snowfall had last been recorded in 1973. The snowfall typically occurs during the coldest months of the year, June and July, and is usually brief, lasting only a few hours or days. The snow often melts quickly due to the relatively warm temperatures.

Weather Patterns and Sunlight in Santa Rosa

Santa Rosa, Argentina, nestled in the vast Pampa region, experiences distinct weather patterns that influence the amount of sunlight it receives. Summers (December to February) are characterized by warm and humid conditions, with frequent rainfall. The average temperature during these months ranges from 18 to 28 degrees Celsius (64 to 82 degrees Fahrenheit). Rain showers can occur throughout the day, reducing the amount of sunlight exposure.

In contrast, winters (June to August) are dry and cold, with temperatures dropping to as low as 1 degree Celsius (34 degrees Fahrenheit). While rainfall is infrequent, persistent fog can obscure sunlight for extended periods. The average number of sunshine hours in Santa Rosa during winter is significantly lower than in summer, with an average of 4 hours per day compared to 8 hours in summer.

Moonrise and Moonset Times

Santa Rosa, Argentina experiences varying moonrise and moonset times throughout the year. The moonrise time marks the moment the moon becomes visible above the horizon, while the moonset time indicates when it disappears below. These times can be influenced by factors such as the moon’s phase, the tilt of the Earth’s axis, and local weather conditions. For example, during the full moon phase, the moon typically rises around sunset and sets around sunrise. Conversely, during the new moon phase, the moon remains below the horizon for the entire night.

Moonrise and Moonset Calendar

To accurately determine the moonrise and moonset times for specific dates and locations, it is recommended to use a reputable astronomical calendar or online tool. These resources provide precise information on the exact times and azimuths (directions) where the moon will rise and set. By knowing these details in advance, individuals can plan activities or photography opportunities to capture the beauty of the moon’s presence in the sky.

Humidity Patterns

Santa Rosa, Argentina experiences significant seasonal variations in humidity levels. During the warm summer months (December to February), the average relative humidity ranges from 65% to 75%, reaching its maximum around January. This high humidity can contribute to a sultry and oppressive atmosphere, especially during the hottest parts of the day.

In contrast, winter (June to August) brings much drier conditions, with average relative humidity levels dropping to around 45% to 55%. The low humidity during this time is often accompanied by clear skies and crisp, dry air. These conditions can be ideal for outdoor activities and can provide relief from the high humidity of the summer months.

Factors Influencing Humidity

The variations in humidity in Santa Rosa are primarily driven by the region’s climate and geographical location. The city is situated in a humid subtropical climate zone, characterized by hot, humid summers and mild, dry winters. The proximity to the Paraná River, a major waterway, contributes to the high humidity levels, particularly during the summer months.

Additionally, seasonal changes in temperature and precipitation also affect humidity levels. Warmer temperatures lead to increased evaporation, resulting in higher humidity. Conversely, colder temperatures and lower precipitation rates lead to drier conditions.

Wind Patterns

Santa Rosa, Argentina, experiences a temperate climate with distinct seasonal wind patterns. During the warm summer months, from December to February, predominantly strong, warm, and humid winds from the north dominate the region. These winds, known as the “Pampero Winds,” originate in the vast plains of the Pampas region and carry moisture and heat from the northern tropics. The Pampero Winds often bring heavy rainfall to Santa Rosa, resulting in significant precipitation during the summer season.

Seasonal Variations

As the seasons change, the wind patterns in Santa Rosa shift. From March to November, the prevailing winds become more variable, influenced by both the Atlantic Ocean and the Andes Mountains. Cool and dry winds from the west and southwest prevail during the winter months, bringing clear skies and pleasant temperatures. However, occasional warm and moist winds from the northeast can interrupt the winter weather patterns and result in episodic rainfall. Overall, Santa Rosa experiences a moderate wind climate with strong seasonal variations, contributing to its diverse and dynamic weather conditions.

Summer (December to February)

Santa Rosa experiences a humid subtropical climate with hot, humid summers and mild winters. The summer months of December to February are the warmest, with average temperatures ranging from 29 to 33 degrees Celsius (84 to 91 degrees Fahrenheit). This time is ideal for swimming, sunbathing, and enjoying outdoor activities at the city’s many parks and gardens. However, it’s important to note that these months can also bring heavy rainfall and high humidity levels.

Fall (March to May)

As summer transitions into fall, the weather in Santa Rosa becomes milder. Temperatures gradually decline, averaging between 23 and 27 degrees Celsius (73 to 81 degrees Fahrenheit). The fall season offers a pleasant reprieve from the summer heat, with comfortable temperatures and fewer crowds. It’s a great time to explore the city’s historical sites, visit museums, and enjoy the changing colors of the foliage.

Current Scenario and Potential

Santa Rosa, Argentina, has a favorable solar energy profile with ample sunshine hours and high solar radiation. Despite this potential, solar energy remains underutilized in the region. As of 2023, Santa Rosa has limited installed solar capacity, with only a few small-scale photovoltaic (PV) projects operating. However, there is a growing interest in exploring solar energy as a sustainable and cost-effective alternative to traditional energy sources.

Government Initiatives and Incentives

The government of Argentina has recognized the potential of solar energy and is implementing initiatives to promote its adoption. The Renewable Energy Law, passed in 2006, provides incentives for solar energy development, such as tax exemptions and feed-in tariffs. Additionally, the National Institute of Agricultural Technology (INTA) is actively involved in research and promotion of solar energy in rural areas, where access to grid electricity can be limited. These initiatives are expected to stimulate the growth of solar energy in Santa Rosa and contribute to the overall decarbonization of the province’s energy mix.

Hills and Valleys

Santa Rosa is situated in a picturesque valley surrounded by the Sierras de Aconquija mountains. The city lies at an elevation of approximately 660 meters (2,165 feet) above sea level, and the surrounding hills and valleys provide a beautiful backdrop to the urban landscape. The hills are covered in lush vegetation and dotted with small villages and farms, while the valleys are planted with vineyards and other crops. The Termas de Río Hondo hot springs are located in a nearby valley, making it a popular destination for tourists.

Fuerte Quemado Crater

One of the most striking topographical features in the Santa Rosa area is the Fuerte Quemado crater. This large, circular crater is approximately 6 kilometers (3.7 miles) in diameter and 300 meters (984 feet) deep. It is thought to have been formed by a volcanic eruption thousands of years ago. The crater is now a national park, and visitors can hike to the rim for stunning views of the surrounding countryside. The crater is also home to a variety of wildlife, including birds, reptiles, and small mammals.

Nearest Airport in Santa Rosa, Argentina

The nearest airport to Santa Rosa, Argentina, is Santa Rosa Airport (RSA), also known as Toay Airport. It is located approximately 7 miles (11 kilometers) from the city center of Santa Rosa. The airport has regular flights to and from Buenos Aires (AEP) and other major cities in Argentina. It also has seasonal flights to some international destinations.

Santa Rosa Airport is a small airport with limited facilities. It has one passenger terminal with basic amenities such as a cafe, a convenience store, and a currency exchange. The airport does not have any jet bridges, so passengers must walk to and from their aircraft. Taxis and buses are available for transportation to and from the airport.

History and Culture

Santa Rosa, the capital of La Pampa Province in Argentina, boasts a rich history and unique cultural heritage. The city was founded in 1892 and quickly became an important agricultural hub. Its colonial architecture reflects its early beginnings, with buildings such as the Cathedral of Santa Rosa and the Museo Provincial de Bellas Artes providing glimpses into the city’s past. Santa Rosa also has a vibrant cultural scene, with numerous theaters, museums, and art galleries showcasing the works of local and international artists.

Modern Development

In recent years, Santa Rosa has undergone significant modernization, transforming itself into a modern and dynamic city. The construction of the new Provincial Legislature, with its striking glass facade, symbolizes this transformation. The city has invested heavily in infrastructure, including new parks, sports facilities, and shopping centers. Santa Rosa is also a major educational center, with several universities and research institutions contributing to its intellectual vitality and workforce development.