Daily brief · Portugal

Lisbon 2026-09-23

Verified against recorded weather

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

A heavy rain day could hit

extreme

A single day could bring around 9.9mm of rain on 2026-09-29 — above the local heavy-rain reference for this time of year (around 3.1mm in a day). Construction, drainage, and outdoor events should review schedules.

outdoor events · drainage operators · agriculture · fishing · local commerce

A dry stretch is forming

medium

6 dry days in a row could start 2026-09-23. 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.

agriculture · fishing · local commerce

A cold stretch is on the way

low

4 days in a row could stay below 15°C, starting 2026-10-01. Longer than this region usually sees at this time of year. Crops in flowering, livestock, and rooftop venues may be exposed.

crop growers · outdoor hospitality · local commerce

Heat is building above the usual range

low

Daily highs may average around 28.9°C over the next week — above the 25.1°C typical for this time of year. Outdoor work, livestock, and crops in flowering can come under stress.

outdoor farmers · tourism · energy demand · fishing

What the day recorded · Open-Meteo daily archive

Rain 0 mmMax 33.2 °CMin 20.7 °CGusts 24.5 km/h
Heat is building above the usual range: recorded 33.2°C vs a local baseline of 25.1°C — above the local baseline

Directional single-day check: recorded daily values compared against the historical baseline each signal was measured from. Signals cover multi-day windows, so this is context, not a forecast grade.

What people were seeing · community field reports

No field observations were posted for this place on 2026-09-23.