Climate Overview
The climate in San Fernando is hot. The average annual temperature is 27°C and approximately 2535mm of precipitation falls per year. San Fernando receives a notable amount of rainfall throughout the year, including during its driest month. San Fernando sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
San Fernando has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is September, when average highs reach 32°C and the mean temperature sits around 27°C. July is the coolest month, with minimum temperatures around 22°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
San Fernando is a very wet location, receiving approximately 2535mm of precipitation annually, which averages out to around 211mm per month. The wettest month is March, averaging 366mm of rainfall. January and February also tend to see above-average precipitation. The driest month is June, with just 90mm. That's 276mm less than March, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.
Wind
San Fernando is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
3 days until Winter
It is currently autumn in San Fernando, which began on March 20, 2026. San Fernando sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in September at around 32°C, while the coldest stretch bottoms out in July near 22°C. Winter is next, beginning on June 21, 2026 — 3 days from now.
Spring
Temperatures range from 24 to 32°C. Rainfall is heavy, totalling around 608mm across the season with a monthly average of 203mm. Winds are generally light, averaging 1km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 24 to 31°C. Rainfall is heavy, totalling around 846mm across the season with a monthly average of 282mm. Winds are generally light, averaging 1km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 31°C. Rainfall is heavy, totalling around 804mm across the season with a monthly average of 268mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 22 to 32°C. Precipitation is moderate at around 276mm for the season, averaging 92mm per month. Winds are generally light, averaging 1km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for San Fernando based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
