Hong Kong
Score moved 3 → 4 (minimal impact → moderate impact). “Observatory warns a 'super' El Niño could push Hong Kong to record heat — but the rains tell a quieter story”
Hong Kong's Observatory and regional coverage warn that a 'super' El Niño, layered on climate change, could drive record-high temperatures and a more volatile typhoon season for the territory. Measured conditions for 9 July–6 October 2026 show mean temperatures about 0.4°C above normal and rainfall roughly 76% above the 1991–2020 average, though that window is the climatological dry season when totals are normally under 20 mm, so the percentage overstates the practical signal. The key watch item is therefore the coming wet season and how a strong El Niño modulates typhoon tracks and rain-bearing systems, rather than the dry-season anomaly itself.
1079.2 mm vs 611.7 mm normal
Measured rainfall for 9 July–6 October 2026 ran about 76% above the 1991–2020 normal, although this window falls in Hong Kong's climatological dry season when totals are normally under 20 mm, so the meaningful signal is the outlook for the coming rains rather than a percentage.
News source28.2°C mean vs 27.8°C normal
Mean temperature for the same window came in about 0.4°C above normal, a modest observed warming that sits below the record-breaking heat the Observatory and regional coverage associate with a 'super' El Niño.
News sourceThe agricultural calendar — planting April–May, summer monsoon June–August, harvest September–October — is expected to stay broadly on schedule, with the main risks being heat stress and typhoon disruption rather than a shift in season timing.
NASA POWER (MERRA-2) reanalysis, 9 Jul 2026 – 6 Oct 2026, sampled at the country centroid (22.3°, 114.2°). Normals are 1991–2020. How this is computed
When it matters
Agricultural calendar for Hong Kong and where the El Niño impact window falls
Last 12 months vs normal
Observed monthly rainfall against the 1991–2020 climatology
Sector by sector
Local and Pearl River Delta vegetable and rice growers face heat stress and typhoon-driven crop damage, though the planting-to-harvest calendar is expected to remain broadly on schedule.
Above-normal dry-season rainfall has eased immediate reservoir stress, but El Niño's tendency to shift monsoon timing keeps the risk of later dry spells on the watch list.
Prolonged heat raises heat-stress and cardiovascular risk, particularly for outdoor workers and the elderly, while warmer, wetter conditions can favour vector-borne disease.
Record heat would push summer cooling demand and peak electricity load higher, while typhoons threaten grid and infrastructure resilience.
Warmer coastal waters and shifting currents are likely to displace fish stocks and raise stress on aquaculture, with typhoon swells adding risk to small vessels.
What happened last time
Past El Niño episodes and how Hong Kong responded. See the full ENSO timeline →
2023-24
Strong El Niño conditions coincided with record global temperatures and extreme rainfall episodes in southern China, underscoring the compounding effect of climate change on ENSO-driven extremes.
unsourced background2015-16
A 'super' El Niño contributed to global record warmth and anomalous regional rainfall, with Hong Kong experiencing an exceptionally warm year and heightened typhoon-season variability.
unsourced background1997-98
One of the strongest El Niño events on record brought a warmer-than-usual winter and disrupted monsoon rainfall patterns across South China, affecting water management and agriculture in the region.
unsourced backgroundLatest coverage
RSSClimate change, ‘super-strong’ El Niño may push Hong Kong to record-high temperatures, Observatory warns
Super El Niño Puts Hong Kong on Record-Heat Alert as Observatory Eyes a Volatile Year
Hong Kong's Observatory and regional coverage warn that a 'super' El Niño, layered on climate change, could drive record-high temperatures and a more volatile typhoon season for the territory. Measure
‘Forcing a reckoning’: How Asia is preparing for a ‘supersized’ El Niño
Explainer: How climate change and El Niño supercharged Typhoon Dolphin
Nearby
Neighbouring countries