Angola climate

Angola's Climate: Rainy Season and Dry Season (Cacimbo) in the Country's Seasonal Regime

Angola's climate is strongly marked by a well-defined seasonal pattern, dividing the year into two major opposing seasons: the rainy season (hot and humid period) and the dry season , locally known as cacimbo (cool and dry period). This alternation between a hot and humid season and a cold and dry one defines the rhythm of life in the country, influencing agriculture, water resources, the landscape, and the daily lives of the population.

Rainy Season in Angola: The Hot and Wet Period of the Year

The rainy season in Angola corresponds to the Angolan summer and generally occurs between October and April/May . This period is driven by the movement of the Intertropical Convergence Zone (ITCZ), which progressively moves from the north to the south of the country.

Duration varies depending on the region:

• In most of the state, the rains extend from October until mid- or late May.
• In the Luanda area and other coastal areas, they can start as early as September and end in April.
• In Cuanza Sul, the season lasts about six months (November to April).
• In the far south (e.g., the municipality of Curoca, Cunene province), the rainy season is shorter, concentrated between December and March.

It is the hottest and wettest time of year. In low-lying and coastal areas, such as Luanda, average temperatures often range between 25°C and 33°C . In plateau regions, such as Catumbela, averages are milder, ranging between 20°C and 29°C . During this season, rainfall is abundant and essential for replenishing aquifers and vegetation growth.

Little Cacimbo: A Climatic Peculiarity of the Rainy Season in Angola

A unique characteristic of the rainy season in Angola is the occurrence of the so-called "small cacimbo" . In some regions, the long rainy season is temporarily interrupted by a short dry period that usually manifests itself between the end of December and the beginning of February. This phenomenon creates a brief dry interval within the rainy season, affecting the agricultural cycle and air humidity.

Dry Season or Cacimbo in Angola: The Angolan Winter

The dry season, or cacimbo, in Angola corresponds to the Angolan winter and predominantly runs from May/June to August/September , although it can extend into October in some areas. Depending on the region, the cacimbo can last up to five months.

It is the coldest time of year. In coastal and lower altitude areas, average temperatures range between 15°C and 22°C . Inland and in the Central Plateau regions, the cold is more intense: temperatures often drop below 10°C and can reach 5°C in the months of June and July. During the dry season, rainfall is practically non-existent in the vast majority of the country, and relative humidity drops sharply. Strong east-to-west winds and dust from the arid lands frequently mark the landscapes of this time of year.

Impacts of the Dry Season on Angola's Climate and Water Resources

The dry season, or cacimbo, in Angola has strong consequences for water resources and the landscape. Surface runoff becomes very low or non-existent in most of the territory. With the exception of the large permanent rivers (Cunene, Cuvelai, Cubango, and Cuando), most rivers and tributaries have dry beds. This period forces rural communities to adopt adaptation strategies to ensure food security: agriculture without irrigation is limited to resistant crops such as sorghum and millet, while artificial irrigation or rainwater harvesting (through cisterns) becomes indispensable. Many families still resort to onakas —lowlands on the banks of rivers that retain some moisture and allow subsistence farming during the long dry months.

Regional Variations between the Rainy Season and the Dry Season in Angola's Climate

Angola's climate exhibits significant regional variations between the two seasons. While the coast and lowlands maintain higher temperatures during the dry season (cacimbo), the interior and the Central Plateau register the lowest values. The rainy season is shorter and less intense in the arid south, while in the center and north of the country it is longer and more abundant. These differences directly influence the distribution of vegetation, water availability, and agricultural practices throughout the territory.

Frequently Asked Questions: Angola's Climate – Rainy Season and Dry Season (Cacimbo)

Q1: What are the two main seasons in Angola? Angola has two clearly defined opposite seasons: the rainy season (hot and humid period) and the dry season, locally known as cacimbo (cool and dry period). This strong seasonal pattern shapes the entire country's weather, landscapes, agriculture, and travel conditions.

Q2: When does the rainy season occur in Angola? The rainy season generally runs from October to April/May. It corresponds to the Angolan summer and is driven by the southward movement of the Intertropical Convergence Zone (ZCIT).

Q3: Does the length of the rainy season vary across Angola? Yes, the exact duration varies by region. In most of the country it lasts from October to mid or late May. In Luanda and coastal areas it can start as early as September and end in April. In Cuanza Sul it lasts about six months (November to April). In the far south (e.g., Curoca municipality in Cunene province) the core rainy period is shorter, mainly December to March, with November and April as transition months.

Q4: What are the temperatures like during the rainy season? The rainy season is the hottest and most humid time of year. In low-lying coastal areas like Luanda, average temperatures frequently range between 25 °C and 33 °C. In higher plateau areas such as Catumbela, temperatures are milder, typically between 20 °C and 29 °C.

Q5: What is the "pequeno cacimbo" and when does it happen? The "pequeno cacimbo" is a short dry spell that sometimes interrupts the long rainy season. It usually occurs between late December and early February in some regions of Angola.

Q6: When does the dry season (cacimbo) occur in Angola? The dry season, or cacimbo, corresponds to the Angolan winter and generally runs from May/June to August or September, sometimes extending into October. Depending on the region, it can last up to five months.

Q7: What are the temperatures during the dry season (cacimbo)? The dry season is cooler and more pleasant. In coastal and low-altitude areas, average temperatures range between 15 °C and 23 °C. In the central plateau, temperatures drop more noticeably, frequently falling below 10 °C and sometimes reaching 5 °C, with the coldest period usually in June and July.

Q8: How much rain falls during the dry season in Angola? Precipitation is practically non-existent during the dry season in most of the country. Humidity drops significantly, and strong east-to-west winds often carry dust from arid inland areas.

Q9: How does the dry season affect rivers and water resources in Angola? With almost no rainfall, surface runoff becomes very low or non-existent across much of the territory. Most rivers and their tributaries dry up, leaving riverbeds exposed. Only the major perennial rivers (such as the Cunene, Cuvelai, Cubango, and Cuando) continue to flow.

Q10: How do rural communities adapt to the long dry season? The severity and length of the dry season force rural communities to adopt survival strategies for food security. Rain-fed agriculture is only viable for very hardy crops such as massango and massambala. Most other crops require artificial irrigation or rainwater storage (e.g., cisterns or calçadão structures). Many families also farm in onakas — low-lying riverbank lands that retain some moisture and allow subsistence cultivation during the long dry months.

Q11: Which season is generally better for tourists visiting Angola? The dry season (cacimbo) from May/June to September/October is usually more comfortable for travel, with lower humidity, clearer skies, and easier road conditions. The rainy season brings greener landscapes and fuller waterfalls but can make some roads difficult and increase humidity.

Q12: In summary, how does Angola's seasonal climate affect daily life and travel? Angola's strong seasonal rhythm — hot and wet versus cool and dry — influences everything from farming and water availability to tourism and road conditions. Understanding the rainy season and the dry season (cacimbo) is key to planning a successful visit or activity in the country.