Climate Overview
The climate in Caicó is hot. The average annual temperature is 28°C and approximately 392mm of precipitation falls per year. March is the wettest month, receiving around 122mm of rainfall. Caicó sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Caicó sees moderate temperature variation throughout the year, ranging from 21°C to 36°C. November is the hottest month, with daytime highs reaching 36°C and an average of 30°C. August is the coolest month, with minimum temperatures around 21°C and an average of 27°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs.
Precipitation
Caicó is a quite dry location, receiving approximately 392mm of precipitation annually, which averages out to around 33mm per month. The wettest month is March, averaging 122mm of rainfall. February and April also tend to see above-average precipitation. The driest month is September, with just 0mm. That's 121mm less than March, 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
Caicó is moderately windy, with an average annual wind speed of 21km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 26km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in April, with average winds dropping to 16km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 10km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 23km/h in winter, 25km/h in spring, 20km/h in summer, 17km/h in autumn.
Seasons
89 days until Winter
It is currently autumn in Caicó, which began on March 20, 2026. Caicó sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in November at around 36°C, while the coldest stretch bottoms out in August near 21°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 22 to 36°C. Precipitation is minimal, with only around 5mm for the entire season. Winds are moderate at around 25km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 24 to 36°C. Rainfall is relatively light, with around 142mm over the season and a monthly average of 47mm. Winds are moderate at around 20km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 34°C. Precipitation is moderate at around 213mm for the season, averaging 71mm per month. Winds are moderate at around 17km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 21 to 34°C. Precipitation is minimal, with only around 32mm for the entire season. Winds are moderate at around 23km/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 Caicó 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.
