Climate Overview
The climate in Côn Sơn is hot. The average annual temperature is 27°C and approximately 2065mm of precipitation falls per year. September is the wettest month, receiving around 337mm of rainfall. Côn Sơn sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Côn Sơn has relatively stable temperatures year-round, staying within a 4°C range. The warmest month is May, when average highs reach 29°C and the mean temperature sits around 29°C. February is the coolest month, with minimum temperatures around 25°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows.
Precipitation
Côn Sơn is a very wet location, receiving approximately 2065mm of precipitation annually, which averages out to around 172mm per month. The wettest month is September, averaging 337mm of rainfall. October and November also tend to see above-average precipitation. The driest month is February, with just 9mm. That's 328mm 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
Côn Sơn is moderately windy, with an average annual wind speed of 29km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 36km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in May, with average winds dropping to 21km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 15km/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 35km/h in winter, 23km/h in spring, 28km/h in summer, 28km/h in autumn.
Seasons
89 days until Summer
It is currently spring in Côn Sơn, which began on March 20, 2026. Côn Sơn sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in May at around 29°C, while the coldest stretch bottoms out in February near 25°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 26 to 29°C. Precipitation is moderate at around 223mm for the season, averaging 74mm per month. Winds are moderate at around 23km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 27 to 29°C. Rainfall is heavy, totalling around 676mm across the season with a monthly average of 225mm. Winds are strong, averaging 28km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 941mm across the season with a monthly average of 314mm. Winds are strong, averaging 28km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 26°C. Precipitation is moderate at around 224mm for the season, averaging 75mm per month. Winds are strong, averaging 35km/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 Côn Sơn 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.
