Daily brief · Japan
Record from Aug 13, 2026. Back to current conditions

Tokyo Aug 13, 2026

Review recorded on Aug 22, 2026, 6:40 PM UTC.

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

A heavy rain day could hit

extreme

A single day could bring around 42.3mm of rain on 2026-08-13 — 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 18, 2026, 6:04 PM UTC.

Source: Open-Meteo.

Samples: 150.

outdoor events · drainage operators · agriculture

Water conditions are improving

strong

Around 220.3mm of rain has fallen over the past 14 days — above the 11.1mm typical for this period. A healthier water balance is restoring across this area.

Reading evidence

Valid until Aug 18, 2026, 6:04 PM UTC.

Source: Open-Meteo.

Samples: 137.

hydro operators · agriculture · reservoir ops

Rainfall is trending above the usual

high

Around 62.6mm of rain may fall in the next 48 hours — above the 1.6mm typical for this period. Field access, drying, and outdoor logistics may be affected.

Reading evidence

Valid until Aug 15, 2026, 6:04 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Historical reference window: 10 requested years.

Historical reference window: ±7 calendar days.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 25.4 mmMax 27 °CMin 22.8 °CGusts 33.1 km/h

Comparison unavailable for this edition.

What people were seeing · community field reports

No field observations were posted for this place on Aug 13, 2026.