Meteorological Replay Open the replayOpen
17:11 · PUB FLASH FLOOD ALERTKing's Road floods 56 minutes after the gauge at Sunset Way hit 158.4 mm/h.Watch it build

Watch Singapore’s weather happen again.

Every downpour, lightning strike and flash flood since December 2025, replayed minute by minute in 3D from 90 NEA rain gauges and PUB’s flood alerts.

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Free, in the browser, no sign-up. A replay of past data, not a warning service.

326days you can replay, minute by minute
6.3Mlightning strikes on the map
258mm/h, the fiercest burst (1 Dec 2025)
90NEA rain gauges, read every 5 minutes

One afternoon · Tue 22 Sep 2026

Three hours that put two roads under water.

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Lightning strikes clustered over western Singapore as the storm forms
14:40

The sky lights up

13,451 lightning strikes in the ten minutes from 14:40. 101,407 that day in all.

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The heaviest rain over central Singapore, canals glowing white
16:15

158.4 mm/h at Sunset Way

The day’s fiercest burst. Canals under the heaviest rain glow as they run full; 51.9 mm falls across the island.

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Flash flood alert tags on the map near Bukit Timah
17:11

King's Road floods

PUB raises a flash flood alert, then Coronation Road 4 minutes later. All clear by 17:37.

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326 days and counting

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Wettest day63.9 mmisland-wide average · Thu 19 Feb 2026Replay this day Fiercest burst258 mm/hAirport Boulevard, 10:30 · Mon 1 Dec 2025Replay this day Most lightning269,095 strikesSun 3 May 2026Replay this day Worst heat stress36.6 WBGTHigh on NEA’s scale (33+ is High) · Tue 15 Sep 2026Replay this day

Every day on record

Each square is a day, shaded by how much rain fell across the island. Orange rings mark days PUB issued flash flood alerts. Click any square to replay it.

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More than rain

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Lightning layer on the map

Lightning

Every strike flashes in at its own time; cloud-to-ground bolts stand out.

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Forecast vs actual layer on the map

Forecast vs actual

What NEA’s 2-hour forecast said for each area, against what actually fell.

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Wind layer on the map

Wind

Arrows show where the air is going, measured at NEA’s stations and filled in between.

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Temperature drop layer on the map

Temperature drop

How much the storm cooled each part of the island.

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Heat stress layer on the map

Heat stress

How heat, humidity, sun and wind add up for the body, by station, in NEA’s Low, Moderate and High bands.

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City and canals layer on the map

City and canals

Buildings with real HDB block heights, and the canals and reservoirs the rain drains into.

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Open data, collected every night

Rain, flood alerts, lightning, forecasts, wind, temperature and heat stress from NEA and PUB via data.gov.sg, archived as published, 326 days from 1 Dec 2025 to 22 Oct 2026.

Checked against the source

4,893 automated checks passed on the last build: gauge totals are re-added from the raw readings, and every strike, alert and forecast is recounted.

A replay, not a warning

For understanding what happened and where. For live warnings, use PUB’s flood alerts and the myENV app.

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A new day is added every night, straight from NEA and PUB.

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