Climate Overview
The climate in Barrio de San Juan is temperate. The average annual temperature is 13°C and approximately 1265mm of precipitation falls per year. August is the wettest month, receiving around 264mm of rainfall. Barrio de San Juan 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 4°C.
Temperature
Barrio de San Juan sees moderate temperature variation throughout the year, ranging from 4°C to 23°C. May is the warmest month, though highs remain moderate at 23°C with a mean of 16°C. January is the coolest month, with minimum temperatures around 4°C and an average of 10°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs.
Precipitation
Barrio de San Juan is a fairly wet location, receiving approximately 1265mm of precipitation annually, which averages out to around 105mm per month. The wettest month is August, averaging 264mm of rainfall. July and September also tend to see above-average precipitation. The driest month is January, with just 13mm. That's 251mm less than August, 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
Barrio de San Juan is relatively calm, with an average annual wind speed of 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Barrio de San Juan, which began on March 20, 2026. Barrio de San Juan 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 23°C, while the coldest stretch bottoms out in January near 4°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 6 to 23°C. Precipitation is moderate at around 175mm for the season, averaging 58mm per month. Winds are generally light, averaging 13km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 10 to 22°C. Rainfall is heavy, totalling around 719mm across the season with a monthly average of 240mm. Winds are generally light, averaging 11km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 6 to 20°C. Rainfall is heavy, totalling around 320mm across the season with a monthly average of 107mm. Winds are generally light, averaging 11km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 4 to 21°C. Rainfall is relatively light, with around 51mm over the season and a monthly average of 17mm. Winds are generally light, averaging 12km/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 Barrio de San Juan is during May, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 99mm per month. By contrast, January can be quite cold with temperatures dropping to 4°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.
Monthly Climate Data
The table below shows monthly climate averages for Barrio de San Juan 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.
