Climate Insights for Junín

The climate in Junín is warm and mild. The average annual temperature is 21°C and approximately 934mm of precipitation falls per year. May is the wettest month, receiving around 140mm of rainfall. Junín sits near the equator, so seasonal temperature differences are minimal throughout the year.

Junín has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is September, when average highs reach 27°C and the mean temperature sits around 22°C. July is the coolest month, with minimum temperatures around 17°C and an average of 21°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.

Junín is a moderately rainy area, receiving approximately 934mm of precipitation annually, which averages out to around 78mm per month. The wettest month is May, averaging 140mm of rainfall. April and November also tend to see above-average precipitation. The driest month is August, with just 28mm. That's 112mm less than May, 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.

Junín 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 August, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 8km/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. Wind tends to pick up during the summer months. The seasonal averages are 9km/h in winter, 9km/h in spring, 11km/h in summer, 9km/h in autumn.

It is currently spring in Junín, which began on March 20, 2026. Junín 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 27°C, while the coldest stretch bottoms out in July near 17°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Junín is during January, February, March, June, July, August, September and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 50mm per month. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Junín 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.