Climate Overview
The climate in La Mesa is temperate. The average annual temperature is 15°C and approximately 2382mm of precipitation falls per year. La Mesa receives a notable amount of rainfall throughout the year, including during its driest month. La Mesa sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
La Mesa sees moderate temperature variation throughout the year, ranging from 9°C to 20°C. September is the warmest month, though highs remain moderate at 20°C with a mean of 15°C. January is the coolest month, with minimum temperatures around 9°C and an average of 14°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.
Precipitation
La Mesa is a very wet location, receiving approximately 2382mm of precipitation annually, which averages out to around 199mm per month. The wettest month is March, averaging 336mm of rainfall. April and November also tend to see above-average precipitation. The driest month is August, with just 98mm. That's 238mm 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
La Mesa is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in La Mesa, which began on March 20, 2026. La Mesa 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 20°C, while the coldest stretch bottoms out in January near 9°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 11 to 20°C. Rainfall is heavy, totalling around 895mm across the season with a monthly average of 298mm. Winds are generally light, averaging 7km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 10 to 20°C. Rainfall is heavy, totalling around 353mm across the season with a monthly average of 118mm. Winds are generally light, averaging 9km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 10 to 20°C. Rainfall is heavy, totalling around 678mm across the season with a monthly average of 226mm. Winds are generally light, averaging 8km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 9 to 20°C. Rainfall is heavy, totalling around 455mm across the season with a monthly average of 152mm. Winds are generally light, averaging 8km/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 La Mesa 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.
