Strong El Niño conditions, with Niño 3.4 anomalies recently reaching +2.1 °C and forecasts pointing to a very strong event peaking later in 2026, represent the dominant near-term driver elevating August global temperature probabilities. Combined with the long-term anthropogenic warming trend, this boosts the likelihood of August 2026 ranking among the top few warmest on record, though exact placement versus prior years like 2023–2025 depends on precise monthly anomaly magnitudes and model spread in seasonal forecasts. High uncertainty around the 50% market-implied odds for each outcome stems from variable El Niño timing, potential short-term cooling influences, and the narrow margins separating record rankings amid ongoing climate variability.