Climate Overview
The climate in Ainaro is warm and mild. The average annual temperature is 23°C and approximately 1882mm of precipitation falls per year. December is the wettest month, receiving around 314mm of rainfall. Ainaro sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Ainaro sees moderate temperature variation throughout the year, ranging from 18°C to 29°C. The warmest month is October, when average highs reach 29°C and the mean temperature sits around 25°C. August is the coolest month, with minimum temperatures around 18°C and an average of 22°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.
Precipitation
Ainaro is a fairly wet location, receiving approximately 1882mm of precipitation annually, which averages out to around 157mm per month. The wettest month is December, averaging 314mm of rainfall. January and March also tend to see above-average precipitation. The driest month is August, with just 10mm. That's 304mm 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
Ainaro is relatively calm, with an average annual wind speed of 4km/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 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Ainaro, which began on September 23, 2026. Ainaro sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in October at around 29°C, while the coldest stretch bottoms out in August near 18°C. Summer is next, beginning on December 21, 2026 (89 days from now).
Spring
Temperatures range from 19 to 29°C. Precipitation is moderate at around 241mm for the season, averaging 80mm per month. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 22 to 28°C. Rainfall is heavy, totalling around 932mm across the season with a monthly average of 311mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 20 to 27°C. Rainfall is heavy, totalling around 559mm across the season with a monthly average of 186mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 18 to 27°C. Rainfall is relatively light, with around 150mm over the season and a monthly average of 50mm. Winds are generally light, averaging 5km/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 Ainaro is during June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 48mm per month. 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 Ainaro 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.
