Climate Overview
The climate in Ji Paraná is hot. The average annual temperature is 26°C and approximately 1918mm of precipitation falls per year. December is the wettest month, receiving around 307mm of rainfall. Ji Paraná is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: September, August, July. The coldest months are July, June, August, when temperatures can drop to 20°C.
Temperature
Ji Paraná sees moderate temperature variation throughout the year, ranging from 20°C to 34°C. The warmest month is September, when average highs reach 34°C and the mean temperature sits around 27°C. July is the coolest month, with minimum temperatures around 20°C and an average of 26°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.
Precipitation
Ji Paraná is a fairly wet location, receiving approximately 1918mm of precipitation annually, which averages out to around 160mm per month. The wettest month is December, averaging 307mm of rainfall. February and March also tend to see above-average precipitation. The driest month is July, with just 1mm. That's 306mm less than December, 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
Ji Paraná is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
89 days until Spring
It is currently winter in Ji Paraná, which began on June 21, 2026. Ji Paraná is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in September at around 34°C, while the coldest stretch bottoms out in July near 20°C. Spring is next, beginning on September 23, 2026 — 89 days from now.
Spring
Temperatures range from 23 to 34°C. Rainfall is heavy, totalling around 454mm across the season with a monthly average of 151mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 23 to 30°C. Rainfall is heavy, totalling around 883mm across the season with a monthly average of 294mm. Winds are generally light, averaging 1km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 22 to 30°C. Rainfall is heavy, totalling around 538mm across the season with a monthly average of 179mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 20 to 34°C. Precipitation is minimal, with only around 42mm for the entire season. Winds are generally light, averaging 2km/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 Ji Paraná 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.
