Climate Overview
The climate in Hoàn Kiếm is warm and mild. The average annual temperature is 25°C and approximately 1833mm of precipitation falls per year. August is the wettest month, receiving around 487mm of rainfall. Hoàn Kiếm 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 February, January, December, when temperatures can drop to 13°C.
Temperature
Temperatures in Hoàn Kiếm vary considerably across the year, with a 22°C difference between the coldest and warmest months. The warmest month is June, when average highs reach 35°C and the mean temperature sits around 31°C. February is the coolest month, with minimum temperatures around 13°C and an average of 16°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between March and April, with a 6°C shift in average temperatures.
Precipitation
Hoàn Kiếm is a fairly wet location, receiving approximately 1833mm of precipitation annually, which averages out to around 153mm per month. The wettest month is August, averaging 487mm of rainfall. July and May also tend to see above-average precipitation. The driest month is February, with just 6mm. That's 480mm 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
Hoàn Kiếm is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is May, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
63 days until Autumn
It is currently summer in Hoàn Kiếm, which began on June 21, 2026. Hoàn Kiếm 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 February near 13°C. Autumn is next, beginning on September 23, 2026 — 63 days from now.
Spring
Temperatures range from 18 to 32°C. Rainfall is heavy, totalling around 347mm across the season with a monthly average of 116mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 35°C. Rainfall is heavy, totalling around 982mm across the season with a monthly average of 327mm. Winds are generally light, averaging 2km/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 373mm across the season with a monthly average of 124mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 13 to 24°C. Rainfall is relatively light, with around 131mm over the season and a monthly average of 44mm. Winds are generally light, averaging 2km/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 Hoàn Kiếm is during January, February, March, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 43mm 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 Hoàn Kiếm 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.