Daily brief · Brazil
Record from Aug 18, 2026. Back to current conditions

Rio de Janeiro Aug 18, 2026

Review recorded on Aug 28, 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 16.2mm of rain on 2026-08-24 — above the local heavy-rain reference for this time of year (around 9.6mm in a day). Construction, drainage, and outdoor events should review schedules.

Reading evidence

Valid until Aug 23, 2026, 6:03 PM UTC.

Source: Open-Meteo.

Samples: 150.

outdoor events · drainage operators · agriculture

A dry stretch is forming

medium

6 dry days in a row could start 2026-08-18. A dry day here means 1mm of rain or less; the important number is the length of the run. Crops in flowering or fruit-set windows are most exposed.

Reading evidence

Valid until Aug 23, 2026, 6:03 PM UTC.

Source: Open-Meteo.

agriculture

Water conditions are improving

active

Around 31.2mm of rain has fallen over the past 14 days — above the 1mm typical for this period. A healthier water balance is restoring across this area.

Reading evidence

Valid until Aug 23, 2026, 6:03 PM UTC.

Source: Open-Meteo.

Samples: 137.

hydro operators · agriculture · reservoir ops

Heat is building above the usual range

low

Daily highs may average around 26.1°C over the next week — above the 24.4°C typical for this time of year. Outdoor work, livestock, and crops in flowering can come under stress.

Reading evidence

Valid until Aug 25, 2026, 6:03 PM UTC.

Source: Open-Meteo.

Samples: 120.

outdoor farmers · tourism · energy demand

Recorded daily weather · Open-Meteo

Rain 0 mmMax 27.8 °CMin 18.4 °CGusts 25.9 km/h

Comparison unavailable for this edition.

What people were seeing · community field reports

No field observations were posted for this place on Aug 18, 2026.