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HomeWeather news → Guarulhos Weather Alert: Rainfall Reaches 41.6 Millimeters
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Guarulhos Weather Alert: Rainfall Reaches 41.6 Millimeters

September 1, 2026 · wweather1 editorial · 1 min read

Guarulhos is experiencing significant rainfall, with automated forecast data recording 41.6 millimeters of precipitation on September 1, 2026. This total exceeds the established threshold of 30 millimeters for the area.

An automatic weather alert was issued by wweather1.com based on recent forecast data for Guarulhos, Brazil. The recorded precipitation level of 41.6 mm marks a high-severity rain event for the region.

Precipitation amounts have surpassed the 30 mm threshold set for automated monitoring systems. The weather event began on September 1, 2026, according to the available system data.

Local conditions remain subject to the ongoing high-severity rainfall. Residents in the affected area are advised to monitor official updates regarding the weather.

Why it is dangerous and what to do

⚠️ Safety
• Stay tuned to local weather forecasts and official updates.
• Exercise caution while traveling on wet roads.
• Avoid areas prone to localized flooding.
📊 The numbers, from wweather1 data
Guarulhos: now +19°, Drizzle.
That is 3° below the September climate norm.
The record for this date is +33° (1963).
Three-day forecast: 1 September: +21°/+14° · 2 September: +21°/+12° · 3 September: +25°/+11°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates.

🌍 Weather in nearby cities

📰 Data source: wweather1. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.

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