Climate Insights for Bonao

The climate in Bonao is warm and mild. The average annual temperature is 21°C and approximately 1486mm of precipitation falls per year. Bonao receives a notable amount of rainfall throughout the year, including during its driest month. Bonao is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: September, August, June. The coldest months are January, February, March, when temperatures can drop to 16°C.

Bonao sees moderate temperature variation throughout the year, ranging from 16°C to 28°C. The warmest month is September, when average highs reach 28°C and the mean temperature sits around 23°C. January is the coolest month, with minimum temperatures around 16°C and an average of 19°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.

Bonao is a fairly wet location, receiving approximately 1486mm of precipitation annually, which averages out to around 124mm per month. The wettest month is May, averaging 204mm of rainfall. April and October also tend to see above-average precipitation. The driest month is December, with just 56mm. That's 148mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Bonao is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Bonao, which began on June 21, 2026. Bonao is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in September at around 28°C, while the coldest stretch bottoms out in January near 16°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

The best time to visit Bonao is during January, February and December, 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, September can be uncomfortably hot with temperatures reaching 28°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Bonao 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.