Asia Demand Note, Saturday, 25 July 2026

Asia Demand Note, Saturday, 25 July 2026 *Generated 2026-07-25 21:40 UTC · For JST and AEST pre-market* --- Headline: Queensland heating demand is running +20.3 HDDs above normal, the sharpest positive anomaly across both markets, while the Pacific High continues to suppress cooling load in Tokyo even as Chubu and Kansai accumulate heat well above seasonal norms. --- Japan The synoptic picture over the Japanese archipelago this weekend sits under the influence of a reinforced Pacific High, whose western ridge is pushing warm, moist air into the central and southwestern regions while leaving the Kanto plain relatively sheltered from the most intense heat. That divergence is exactly what the degree-day figures reflect. Tokyo tells the quieter story: CDD15 at 149.2 against a normal of 156.3, a negative anomaly of 7.1 cooling degree-days. The previous reading of 131 shows accumulation continuing, but the trajectory remains below the seasonal benchmark. The mechanism is suppression, the ridge geometry is keeping the most anomalous heat displaced to Japan's interior and southwest, and Tokyo's JEPX evening peak load, sensitive to aircon draw, is therefore not receiving the same forcing that Chubu and Kansai are experiencing. Chubu and Kansai are the active zones. Chubu sits at 191.2 CDD15 against a normal of 167.5, an anomaly of +23.7. Kansai is close behind at 198.2 versus 174.9, posting +23.3. Both zones have accumulated heat meaningfully faster than climatology, and both show prior readings that confirm this is not a single-day spike, Chubu's previous print was 196.5 and Kansai's was 183.3, meaning the gap between the two regions is narrowing as Kansai's accumulation rate accelerates. The mechanism driving these interiors is the Pacific High's direct radiative forcing over terrain that traps heat more efficiently than the coastal Kanto basin. The broader teleconnection background supports continuation. The Arctic Oscillation is firmly positive at +1.23, which tends to keep the polar jet displaced northward and blocks cold-air intrusions into mid-latitudes, no baiu-remnant or cold-surge disruption signal is present in this configuration. The Nino3.4 index at +2.30 indicates a meaningful warm ENSO state, which historically biases the western Pacific ridge toward persistence through summer. No heating degree-days register in any Japanese zone, confirming that the plum-front has long since cleared the archipelago and the season is settled into full summer mode. The regime flag is BENIGN, no tripwire crossed, but the Chubu and Kansai CDD anomalies of roughly +23 are not trivial margins. The demand-side read is that aircon load in the central and Kansai grids is running above what normal summer planning would assume, while Tokyo remains closer to balance. --- Australia Australia is mid-winter, and the NEM is showing a differentiated heating picture with one region standing well clear of the others. Queensland's HDD15 has reached 49.8 against a normal of 29.5, an anomaly of +20.3, the largest relative departure in the entire packet, proportionally speaking a load regime nearly 70% above what climatology would prescribe for this point in the season. The previous reading of 48.6 confirms this is not a transient excursion. The mechanism is a cold airmass sitting unusually deep into subtropical Queensland, likely associated with a mid-latitude trough that has extended its influence further north than is typical. The SAM index at +2.79 is strongly positive, which displaces the Southern Annular Mode's westerly belt poleward and can, somewhat counterintuitively, allow blocking-influenced cold outbreaks to penetrate northward along the eastern seaboard when the right synoptic configuration aligns. New South Wales and South Australia are also running above normal. NSW sits at 86.5 HDDs versus a normal of 74.2, an anomaly of +12.2, and its previous reading of 82.9 shows steady accumulation. South Australia posts 110.9 against a normal of 99.3, anomaly +11.5, up sharply from its prior 99.8, the largest single-period jump among the southern NEM regions and a signal that a fresh cold incursion has pushed through the state since the last run. Victoria is the outlier in the opposite direction: 112.2 HDDs versus a normal of 117.3, a negative anomaly of 5.1, down notably from its prior reading of 121.5. A cross-Tasman or onshore flow delivering relatively milder marine air to Victoria's south while South Australia to its west absorbed the brunt of a cold front is a credible synoptic interpretation consistent with both readings. The IOD at +0.22 is modestly positive, a state that tends to suppress rainfall over southern and southeastern Australia and keeps conditions drier and often colder at night, supportive of elevated heating loads. The AO at +1.23 reinforces the idea that the polar jet is organized and capable of delivering well-structured frontal sequences rather than disorganized, diffuse cold. The AU regime flag is also BENIGN at the system level, but Queensland's +20.3 anomaly and South Australia's sharp period-on-period increase are the two zones warranting attention. --- What to Watch The first thing to track is South Australia's next degree-day print: the jump from 99.8 to 110.9 in a single period is large enough that confirmation, or reversal, will clarify whether a frontal passage is deepening or already clearing. The second is the SAM index: at +2.79 it is already well positive, but any further extension toward or beyond +3.0 would add weight to the case for persistent cold penetration into subtropical Queensland, where the anomaly is already the most extreme in this dataset.