Climate Overview
The climate in Cachoeiras de Macacu is warm and mild. The average annual temperature is 21°C and approximately 2197mm of precipitation falls per year. November is the wettest month, receiving around 418mm of rainfall. Cachoeiras de Macacu 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: February, March, April. The coldest months are June, July, August, when temperatures can drop to 13°C.
Temperature
Cachoeiras de Macacu sees moderate temperature variation throughout the year, ranging from 13°C to 30°C. The warmest month is February, when average highs reach 30°C and the mean temperature sits around 25°C. June is the coolest month, with minimum temperatures around 13°C and an average of 17°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 4°C shift in average temperatures.
Precipitation
Cachoeiras de Macacu is a very wet location, receiving approximately 2197mm of precipitation annually, which averages out to around 183mm per month. The wettest month is November, averaging 418mm of rainfall. January and December also tend to see above-average precipitation. The driest month is July, with just 18mm. That's 400mm less than November, 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
Cachoeiras de Macacu is relatively calm, with an average annual wind speed of 1km/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 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
61 days until Spring
It is currently winter in Cachoeiras de Macacu, which began on June 21, 2026. Cachoeiras de Macacu 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 February at around 30°C, while the coldest stretch bottoms out in June near 13°C. Spring is next, beginning on September 23, 2026 — 61 days from now.
Spring
Temperatures range from 17 to 26°C. Rainfall is heavy, totalling around 666mm across the season with a monthly average of 222mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 20 to 30°C. Rainfall is heavy, totalling around 1006mm across the season with a monthly average of 335mm. Winds are generally light, averaging 1km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 16 to 29°C. Rainfall is heavy, totalling around 375mm across the season with a monthly average of 125mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 13 to 25°C. Rainfall is relatively light, with around 150mm over the season and a monthly average of 50mm. Winds are generally light, averaging 2km/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 Cachoeiras de Macacu is during April, May, June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 63mm per month. By contrast, February can be uncomfortably hot with temperatures reaching 30°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Cachoeiras de Macacu 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.