Impacts of Climate Variability on Construction Project Performance in South-South, Nigeria

The impact of climate variability on construction project performance has become increasingly significant, particularly in regions like South-South Nigeria, where weather conditions can be extreme and unpredictable. This study investigates how climate elements such as rainfall, temperature, humidity, and wind affect key project performance parameters, including productivity, delivery time, quality, safety, cost, and profitability. Utilising a quantitative survey approach, data were collected from registered construction professionals across selected states in the region. The analysis, employing inter-rater reliability and relative importance index methods, revealed that rainfall predominantly impacts project delivery time and quality, while high temperatures contribute to safety risks and decreased productivity. Humidity was shown to exacerbate construction challenges by creating unstable work conditions, while high winds disrupt material handling and pose risks to structural integrity. Findings indicate that effective mitigation strategies, such as the adoption of renewable energy, afforestation, public education on reducing emissions, and climate-adaptive project planning, are essential to counteract these challenges. Key recommended measures include the adoption of alternative energy sources such as solar power to reduce reliance on fossil fuels, afforestation initiatives to absorb carbon and moderate temperature fluctuations, and educational campaigns to raise public awareness about emission reduction practices. This study underscores the need for comprehensive policy development and investment in climate-responsive infrastructure to enhance construction resilience.