San Marcos Weather Forecast
Current Conditions & 10-Day Outlook
Current Weather Conditions in San Marcos
San Marcos
San Salvador Department, El Salvador
OvercastHourly San Marcos Weather Forecast
29°26°26°25°25°25°25°24°24°23°23°22°22°24°25°27°
29°31°32°33°33°32°
31°29°Very gentle wind.
Low chance of precipitation.
San Marcos 10-Day Weather Outlook
Today's Weather in San Marcos, San Salvador Department, El Salvador
Mon, Jul 20
Tue, Jul 21
Wed, Jul 22
Thu, Jul 23
Fri, Jul 24
Sat, Jul 25
Sun, Jul 26
Mon, Jul 27
Tue, Jul 28
Feels like
Feels warmer than actual temperature.
Pressure
Expect unstable weather conditions.
Humidity
High humidity.
UV
Take precautions.
Gusts
Max speed of wind gusts today.
Cloud Cover
Overcast, expect cloudy conditions.
Daylight
Long days, short nights.
Rain
No rain, dry conditions expected.
Snowfall
No snowfall expected.
Current Air Quality in San Marcos
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About San Marcos Weather
General
This page provides the current weather forecast for San Marcos, San Salvador Department, El Salvador, including hourly conditions, a 10-day outlook, wind speed and direction, precipitation, UV index, and air quality - giving you everything you need to plan your day in one view.
Forecast & Methodology
The forecast data on this page is sourced from the ECMWF open-source model - a reliable global model used widely across weather services worldwide. For sailors, boaters, and mariners who need greater accuracy and higher resolution, PredictWind's proprietary forecast models deliver precision down to 1km resolution, updated multiple times daily and validated against real-world observations. Sign up free to access PredictWind's advanced forecasts.
Sailing & Marine Conditions
San Marcos weather forecasts on PredictWind are optimised for sailors and boaters who need precise, reliable wind and wave data for passage planning and day sailing. PredictWind is used by ocean racers, cruising sailors, and commercial vessel operators across El Salvador and worldwide. For detailed marine conditions including wave height, swell period, and offshore wind forecasts, see the San Marcos marine forecast.
Units
Wind speed is displayed in knots - the standard unit used by sailors, weather services, and maritime authorities. Temperature is shown in degrees Celsius. Use the toggle at the top of the page to switch between Celsius and Fahrenheit. Pressure is shown in hPa, rainfall in millimetres, and air quality is available in both US and EU AQI standards.