Climate Overview
The climate in Ilaro is hot. The average annual temperature is 27°C and approximately 1276mm of precipitation falls per year. September is the wettest month, receiving around 199mm of rainfall. Ilaro sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Ilaro sees moderate temperature variation throughout the year, ranging from 23°C to 35°C. February is the hottest month, with daytime highs reaching 35°C and an average of 30°C. August is the coolest month, with minimum temperatures around 23°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Ilaro is a fairly wet location, receiving approximately 1276mm of precipitation annually, which averages out to around 106mm per month. The wettest month is September, averaging 199mm of rainfall. June and July also tend to see above-average precipitation. The driest month is January, with just 13mm. That's 186mm less than September, 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
Ilaro is relatively calm, with an average annual wind speed of 7km/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 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months.
Seasons
11 days until Autumn
It is currently summer in Ilaro, which began on June 21, 2026. Ilaro sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in February at around 35°C, while the coldest stretch bottoms out in August near 23°C. Autumn is next, beginning on September 23, 2026 (11 days from now).
Spring
Temperatures range from 25 to 34°C. Rainfall is heavy, totalling around 306mm across the season with a monthly average of 102mm. Winds are generally light, averaging 8km/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 519mm across the season with a monthly average of 173mm. Winds are generally light, averaging 8km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 33°C. Rainfall is heavy, totalling around 397mm across the season with a monthly average of 132mm. Winds are generally light, averaging 6km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 24 to 35°C. Rainfall is relatively light, with around 54mm over the season and a monthly average of 18mm. Winds are generally light, averaging 6km/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 Ilaro 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.
