Climate Overview
The climate in Bỉm Sơn is warm and mild. The average annual temperature is 25°C and approximately 1761mm of precipitation falls per year. August is the wettest month, receiving around 352mm of rainfall. Bỉm Sơn is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: June, July, August. The coldest months are January, December, February, when temperatures can drop to 15°C.
Temperature
Bỉm Sơn sees moderate temperature variation throughout the year, ranging from 15°C to 35°C. The warmest month is June, when average highs reach 35°C and the mean temperature sits around 31°C. January is the coolest month, with minimum temperatures around 15°C and an average of 18°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between November and December, with a 4°C shift in average temperatures.
Precipitation
Bỉm Sơn is a fairly wet location, receiving approximately 1761mm of precipitation annually, which averages out to around 147mm per month. The wettest month is August, averaging 352mm of rainfall. September and July also tend to see above-average precipitation. The driest month is February, with just 26mm. That's 326mm less than August, 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
Bỉm Sơn is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 7km/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
87 days until Winter
It is currently autumn in Bỉm Sơn, which began on September 23, 2026. Bỉm Sơn 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 June at around 35°C, while the coldest stretch bottoms out in January near 15°C. Winter is next, beginning on December 21, 2026 (87 days from now).
Spring
Temperatures range from 20 to 33°C. Rainfall is heavy, totalling around 302mm across the season with a monthly average of 101mm. Winds are generally light, averaging 9km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 27 to 35°C. Rainfall is heavy, totalling around 791mm across the season with a monthly average of 264mm. Winds are generally light, averaging 7km/h. Stay hydrated, wear sun protection, and seek shade during the hottest hours of the day.
Autumn
Temperatures range from 20 to 32°C. Rainfall is heavy, totalling around 573mm across the season with a monthly average of 191mm. Winds are generally light, averaging 9km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 15 to 22°C. Rainfall is relatively light, with around 95mm over the season and a monthly average of 32mm. Winds are generally light, averaging 9km/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 Bỉm Sơn is during January, February, March, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 41mm per month. By contrast, June can be uncomfortably hot with temperatures reaching 35°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 Bỉm 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.
