Botswana
Score moved 7 → 6 . “Strong El Niño heat is already here — the rains Botswana farms depend on may not follow”
A strong El Niño, with an ONI of +2.16, has prompted Southern Africa-wide preparedness alerts warning that Botswana and its neighbours face a drier-than-normal rainy season and above-normal heat. Measured temperatures for 9 July–6 October 2026 were +1.1°C above normal, matching the warming signal the articles describe, while the dry-season window itself carries no meaningful rainfall anomaly. The FAO and OCHA assessments point to the highest agricultural and humanitarian risk falling in the December–February peak, when delayed planting, crop stress and a longer lean season are expected.
14.1 mm vs 5.5 mm normal — too little rain in this window for a % to mean anything
The July–October window is Botswana's climatological dry season, so no meaningful rainfall anomaly applies; the articles instead warn that the coming November–March rains are likely to be below normal under the strong El Niño.
News source20.84°C mean vs 19.79°C normal
Measured mean temperatures for 9 July–6 October 2026 ran +1.1°C above normal, consistent with the heat that the preparedness articles associate with El Niño across Southern Africa.
News sourcePlanting in November–December is expected to be delayed or reduced as the rains arrive late and poorly distributed, pushing peak crop stress into the December–February window and extending the lean season.
NASA POWER (MERRA-2) reanalysis, 9 Jul 2026 – 6 Oct 2026, sampled at the country centroid (-22.0°, 24.0°). Normals are 1991–2020. How this is computed
When it matters
Agricultural calendar for Botswana and where the El Niño impact window falls
Last 12 months vs normal
Observed monthly rainfall against the 1991–2020 climatology
Sector by sector
Delayed and erratic November–December planting is likely to cut rain-fed cereal and livestock pasture yields, with the worst stress expected in the December–February peak.
Below-normal rains would reduce inflows to dams and boreholes, tightening supply for both urban demand and irrigation as the season progresses.
Heat stress, water scarcity and poorer nutrition are expected to compound, with the forecast-to-action literature warning of rising climate-sensitive disease risk.
Hotter conditions are likely to lift cooling demand while low dam levels constrain hydropower and water-cooled generation, raising load-shedding risk.
Lower river levels and reduced floodplain recharge in the Okavango and Chobe systems are expected to shrink fish habitat and catch potential.
What happened last time
Past El Niño episodes and how Botswana responded. See the full ENSO timeline →
2023-24
El Niño contributed to a severe regional drought that slashed cereal harvests across Southern Africa and left millions in need of humanitarian assistance.
unsourced background2015-16
A very strong El Niño coincided with Botswana's worst drought in decades, triggering water restrictions and livestock losses and prompting a national drought declaration.
unsourced background1997-98
One of the strongest El Niño events on record brought severe drought and crop failure across Southern Africa, including Botswana, and is widely cited as a benchmark for regional food insecurity.
unsourced backgroundLatest coverage
RSSFrom El Niño forecasts to proportionate public health action: a forecast-to-action framework for climate-related health risks
EL Nino puts Africa at risk of drought and floods
Strong El Niño Points to a Drier, Hotter Season for Botswana
A strong El Niño, with an ONI of +2.16, has prompted Southern Africa-wide preparedness alerts warning that Botswana and its neighbours face a drier-than-normal rainy season and above-normal heat. Meas
Nearby
Neighbouring countries