Daily brief · Japan
Record from Aug 11, 2026. Back to current conditions

Tokyo Aug 11, 2026

Review recorded on Aug 21, 2026, 6:40 PM UTC.

Weather-risk signals · signal engine (Open-Meteo)

A heavy rain day could hit

high

A single day could bring around 39.7mm of rain on 2026-08-11 — above the local heavy-rain reference for this time of year (around 27.7mm in a day). Construction, drainage, and outdoor events should review schedules.

Reading evidence

Valid until Aug 16, 2026, 6:02 PM UTC.

Source: Open-Meteo.

Samples: 150.

outdoor events · drainage operators · agriculture

Water conditions are improving

active

Around 102.2mm of rain has fallen over the past 14 days — above the 8.6mm typical for this period. A healthier water balance is restoring across this area.

Reading evidence

Valid until Aug 16, 2026, 6:02 PM UTC.

Source: Open-Meteo.

Samples: 137.

hydro operators · agriculture · reservoir ops

Rainfall is trending above the usual

high

Around 59.4mm of rain may fall in the next 48 hours — above the 1.2mm typical for this period. Field access, drying, and outdoor logistics may be affected.

Reading evidence

Valid until Aug 13, 2026, 6:02 PM UTC.

Source: Open-Meteo.

Historical reference window: 10 requested years.

Historical reference window: ±7 calendar days.

Samples: 149.

farmers · tourism · logistics

Recorded daily weather · Open-Meteo

Rain 18.6 mmMax 27.4 °CMin 21.5 °CGusts 49.7 km/h

Comparison unavailable for this edition.

What people were seeing · community field reports

No field observations were posted for this place on Aug 11, 2026.