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High Precipitation Forecast Issued for Haikou

September 12, 2026 · wweather1 editorial · 1 min read

An automatic weather alert has been issued for Haikou, China, due to high precipitation levels forecasted for September 13, 2026. Expected rainfall values have crossed the established local threshold.

According to forecast data from wweather1.com, Haikou is expected to experience significant rainfall on September 13, 2026. The projected precipitation level has reached 33.7 millimeters, exceeding the warning threshold of 30 millimeters.

This automatic alert was generated based on the latest meteorological data for the region. The high severity rating indicates that local conditions warrant attention from residents and authorities.

Weather monitoring systems will continue to track the precipitation levels in Haikou as the event progresses. Further updates will be provided should forecast values change.

Why it is dangerous and what to do

⚠️ Safety
• Stay informed by checking the latest weather updates and forecasts.
• Exercise caution if traveling in areas prone to water accumulation.
• Ensure outdoor items are secure during periods of heavy rain.
📊 The numbers, from wweather1 data
Haikou: now +25°, Rain showers.
That is 2° below the September climate norm.
The record for this date is +32° (1958).
Three-day forecast: 12 September: +29°/+25° · 13 September: +27°/+23° · 14 September: +27°/+23°
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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