Home → Weather news → High Rainfall Forecast for San Jose
High Rainfall Forecast for San Jose
San Jose is expecting high levels of precipitation on September 26, 2026, with forecast amounts exceeding standard thresholds.
According to automated forecast data from wweather1.com, San Jose in Costa Rica is under a high severity weather alert for rain.
The forecasted precipitation is expected to reach 50.7 millimeters on September 26, 2026. This value crosses the established warning threshold of 30 millimeters.
The alert was automatically generated based on the latest meteorological data indicating significant rainfall for the area.
Why it is dangerous and what to do
⚠️ Safety
• Monitor local weather updates and forecasts.
• Exercise caution if traveling on wet roads.
• Ensure proper drainage around residential properties.
📊 The numbers, from wweather1 data
San José: now +23°, Rain showers.
That is 1° above the September climate norm.
The record for this date is +27° (2015).
Three-day forecast: 26 September: +25°/+18° · 27 September: +27°/+18° · 28 September: +27°/+17°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates. 🌍 Weather in nearby cities
Managua
now
☁️
+29°
Tegucigalpa
now
🌤️
+29°
San Salvador
now
☁️
+26°
Panama City
now
🌦️
+28°
San José
now
🌦️
+23°
San Andrés
now
☁️
+28°
📰 Data source: wweather1. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.