Climate Overview
The climate in San José el Alto is warm and mild. The average annual temperature is 19°C and approximately 665mm of precipitation falls per year. June is the wettest month, receiving around 142mm of rainfall. San José el Alto is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, March. The coldest months are January, December, February, when temperatures can drop to 8°C.
Temperature
Temperatures in San José el Alto vary considerably across the year, with a 23°C difference between the coldest and warmest months. The warmest month is May, when average highs reach 31°C and the mean temperature sits around 23°C. January is the coolest month, with minimum temperatures around 8°C and an average of 15°C. On average, daily temperatures fluctuate by about 14°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 3°C shift in average temperatures.
Precipitation
San José el Alto is a relatively dry area, receiving approximately 665mm of precipitation annually, which averages out to around 55mm per month. The wettest month is June, averaging 142mm of rainfall. July and September also tend to see above-average precipitation. The driest month is January, with just 3mm. That's 139mm less than June, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
San José el Alto is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 8km/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
7 days until Autumn
It is currently summer in San José el Alto, which began on June 21, 2026. San José el Alto is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in May at around 31°C, while the coldest stretch bottoms out in January near 8°C. Autumn is next, beginning on September 23, 2026 (7 days from now).
Spring
Temperatures range from 11 to 31°C. Rainfall is relatively light, with around 67mm over the season and a monthly average of 22mm. Winds are generally light, averaging 9km/h. Light layers work well as temperatures warm through the season. It is a great time to be outdoors.
Summer
Temperatures range from 15 to 28°C. Rainfall is heavy, totalling around 397mm across the season with a monthly average of 132mm. Winds are generally light, averaging 8km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 10 to 26°C. Precipitation is moderate at around 186mm for the season, averaging 62mm per month. Winds are generally light, averaging 9km/h. Layered clothing works best as temperatures gradually cool. Enjoy the crisp air and changing scenery.
Winter
Temperatures range from 8 to 26°C. Precipitation is minimal, with only around 15mm for the entire season. Winds are generally light, averaging 8km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit San José el Alto is during February, March, April, May, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 21mm per month. By contrast, January can be quite cold with temperatures dropping to 8°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.
Monthly Climate Data
The table below shows monthly climate averages for San José el Alto 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.
