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High Rainfall Alert Issued for Saitama
Saitama has been placed under a high-severity rainfall alert as precipitation levels are forecast to reach 30.3 mm on September 28, 2026.
An automatic weather alert has been issued for Saitama, Japan, following forecast data indicating heavy rainfall. The projected precipitation value has crossed the established local threshold of 30 mm.
The recorded forecast metric indicates that total precipitation will reach 30.3 mm. This automated warning system is based on the latest internal forecast data from wweather1.com.
Residents and local authorities in the affected area are advised to monitor ongoing weather conditions as the rainfall event develops throughout the day on September 28, 2026.
Why it is dangerous and what to do
⚠️ Safety
• Stay tuned to local weather updates and official forecasts.
• Avoid unnecessary travel through flood-prone areas.
• Ensure outdoor items are secured against heavy rain.
📊 The numbers, from wweather1 data
Saitama: now +20°, Drizzle.
That is 4° below the September climate norm.
The record for this date is +31° (2023).
Three-day forecast: 27 September: +24°/+18° · 28 September: +22°/+20° · 29 September: +21°/+19°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates. 🌍 Weather in nearby cities
Tokyo
now
🌦️
+21°
Yokohama
now
🌦️
+23°
Osaka
now
🌧️
+21°
Nagoya
now
🌦️
+22°
Kawasaki
now
🌦️
+24°
Kobe
now
🌧️
+24°
📰 Data source: wweather1. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.