A powerful El Niño, forecast as the strongest in living memory and likely to make 2027 the hottest year on record, risks drought, floods, crop failures and heavy foreign-exchange outflows for Sri Lanka’s recovering economy.
Sri Lanka is confronting a multi-layered climate emergency as a rapidly intensifying El Niño event in the Pacific Ocean threatens to disrupt monsoon patterns, strain water resources, undermine agriculture and power generation, and place fresh pressure on the country’s still-limited foreign exchange reserves.
The British Meteorological Office has issued one of its starkest warnings in years, describing the developing event as unprecedented in modern forecasting records, with equatorial Pacific sea-surface temperatures projected to rise by more than 3°C above average – well beyond the 1–2°C range of typical strong El Niños – and a high probability that 2027 will become the hottest year on record globally.
The World Meteorological Organization has reinforced the outlook, stating that El Niño is firmly established and carries a near-100 per cent likelihood of persisting through February 2027, with further intensification expected before peaking later this year. Impacts are already visible in Sri Lanka: dry-zone reservoir levels have declined sharply, emergency water deliveries have reached nearly 72,000 people across multiple districts, and officials report heightened heat and evaporation rates compounding the seasonal dry spell.
For a nation still emerging from the 2022 economic crisis and sovereign debt restructuring, the timing is especially precarious. Hydropower supplies roughly one-third of electricity, agriculture remains a cornerstone of both food security and export earnings, and official reserves hover around US$6.5-6.6 billion – well below the levels many analysts believe necessary for a comfortable buffer against shocks.
Climate Whiplash Across Monsoon Seasons
The core risk for Sri Lanka is not uniform drought but a sharp regional and seasonal “climate whiplash.” In the western and central zones, a weakened southwest monsoon is expected to reduce rainfall, threatening the ongoing Yala cultivation season and lowering inflows into major hydro and irrigation reservoirs. In the northern and eastern dry zone, the northeast monsoon and inter-monsoon periods carry a heightened risk of intense, localised rainfall and flash floods that can damage Maha crops and infrastructure.
This dual pattern mirrors experiences during previous strong El Niño episodes, notably 2015–16 and 2016–17, when prolonged dry conditions in some regions coincided with devastating floods and landslides in others. Meteorologists note that the interaction with the Indian Ocean Dipole (IOD) will be decisive. A positive IOD phase, which models currently favour, can partially offset rainfall deficits in parts of the country but may also amplify convective activity and flood risk in specific windows, particularly October–November.
Current ground conditions already reflect stress. By late August, storage across Sri Lanka’s 74 major reservoirs had fallen to around 36 per cent of capacity in aggregate assessments, with some dry-zone tanks below 30 per cent and hundreds of smaller village tanks reported near 10 per cent. Authorities have prioritised drinking water while restricting irrigation releases in the most affected districts. Higher temperatures are accelerating evaporation, further eroding available supplies even before any additional rainfall shortfall materialises.
Hydropower Vulnerability and the Thermal Switch
Sri Lanka’s electricity system remains heavily dependent on large hydro complexes in the Mahaweli, Laxapana and Samanala networks. When reservoir inflows decline, the Ceylon Electricity Board must increase thermal generation, almost entirely fuelled by imported diesel, coal or other petroleum products. This creates an immediate and unbudgeted demand for foreign currency at a time when reserves are still being rebuilt.
Officials have estimated potential generation shortfalls in the range of tens to over 100 gigawatt-hours in coming months if dry conditions intensify, prompting early contingency planning for alternative supply. The trade-off is stark: releasing more water for power generation reduces availability for irrigation and drinking supplies, while prioritising agriculture and domestic use raises the cost of electricity and the import bill. Thermal power is significantly more expensive, and any subsequent tariff adjustments feed into higher production costs across the economy.
Foreign Exchange Pressures at a Critical Juncture
The macroeconomic implications are severe. Sri Lanka does not produce significant quantities of fossil fuels; every additional tonne of oil or coal for emergency generation must be paid for in US dollars. Simultaneously, domestic crop shortfalls would force higher imports of rice, milk powder, lentils and other staples. Agricultural export earnings – particularly from tea and rubber – are themselves vulnerable to heat stress, drought and pest outbreaks, reducing the foreign-currency inflows that normally help offset import costs.
Post-restructuring, principal and interest payments on external debt are scheduled to resume more fully after temporary grace periods. Gross official reserves stood at approximately US$6.5-6.6 billion in mid-2026, supported by Central Bank purchases and remittances, yet still short of longer-term targets and vulnerable to any large unplanned outflows. Analysts and policymakers have repeatedly emphasised the need to build buffers toward or beyond US$8-15 billion ranges to provide genuine resilience. An El Niño-driven surge in fuel and food imports could erode hard-won reserve gains and complicate the path of economic recovery.
Compounding the risk is the global nature of the event. Major food-exporting nations including India, Vietnam, Thailand and Australia are also expected to face drought or heat stress, raising the prospect of tighter international supplies, higher prices and possible export restrictions. Sri Lanka has historically relied on regional imports during domestic shortfalls; that safety valve may narrow precisely when it is most needed.
Government Preparations and Adaptive Measures
Authorities have not been idle. President Anura Kumara Dissanayake has chaired high-level meetings involving the Department of Meteorology, Irrigation Department, Mahaweli Authority, Disaster Management Centre, electricity utilities and agricultural agencies. The 2026 Yala season was advanced by several weeks in an effort to reduce exposure to potential late-season shortfalls. Cabinet-level discussions and a Food Policy and Security Committee have focused on contingency planning for water storage, cultivation and power.
Practical steps already under way include urging farmers to adopt short-duration paddy varieties (2.5- to 3.5-month maturity), promoting drought-tolerant crops such as finger millet (kurakkan), sorghum, green gram, cowpea, sesame, cassava and sweet potato, and intensifying water-conservation campaigns. The Tea Research Institute has issued guidance on soil moisture management, foliar treatments and pest vigilance for plantation estates. Emergency water distribution, funded at several billion rupees, is ongoing in the worst-hit areas.
Experts stress that longer-term resilience requires more than short-term coping. A multi-sectoral national task force with clear authority over water allocation, agricultural extension and energy planning has been advocated. Proposals include water-credit or quota systems for large industrial and commercial users, accelerated rainwater harvesting, improved efficiency in irrigation canals, and gradual shifts in dietary patterns that reduce national dependence on water-intensive rice.
Lessons from History
Past El Niño events demonstrate both the dangers and the value of preparation. The 2015-16 episode brought early shortages followed by catastrophic May 2016 floods and landslides, then a prolonged drought that affected millions. Timely reservoir management, early planting decisions and diversification of crops can materially reduce losses. Conversely, delayed responses or rigid adherence to traditional calendars amplify damage.
Sri Lanka enters this period with certain advantages: relatively better reservoir starting levels in some systems compared with the mid-2010s, improved forecasting capacity, and institutional experience from recent climate and economic crises. Yet vulnerabilities remain acute – high agricultural dependence, hydro-centric power, limited fiscal space and still-modest external buffers.
The coming months will test coordination across ministries, the willingness of farmers and households to adapt practices, and the ability of policymakers to prioritise scarce water and foreign exchange. El Niño itself cannot be prevented. The scale of its impact on Sri Lanka, however, will be determined by the quality and speed of the national response. Proactive water management, crop diversification, realistic power planning and disciplined reserve stewardship offer the best prospect of navigating the period without a secondary economic crisis.
