Climate Chart of Hanoi, Viet Nam
Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023
For Hanoi, Viet Nam, the climate data describe 2013–2023. Monthly mean temperatures range from January at 16.9 °C to June at 29.6 °C, giving a broad sense of how conditions vary through the year without describing daytime highs. Rainfall and sunshine also have distinct monthly peaks and lows, so visitors weighing warmth, rain or daylight may find different months relevant. The figures are monthly or daily averages, not guarantees of conditions on a particular day.
Climate overview
Temperature
The monthly mean temperature is lowest in January, at 16.9 °C, and highest in June, at 29.6 °C. These are averages for each month, not daytime maximum temperatures, so they describe the typical monthly level rather than the hottest part of a day. Across the calendar months, the unweighted mean of the monthly means is 24.0 °C. It offers a concise year-wide reference, but does not account for the different numbers of days in each month or show the range of temperatures visitors might encounter within a month.
Rain
Mean daily rainfall reaches its monthly high in August, at 12.57 mm/day. Visitors planning around outdoor activities may want rain protection available then; this daily mean does not reveal how often rain falls or whether a particular day will be wet. The lowest monthly mean daily rainfall is in December, at 1.17 mm/day, which can be a useful option for visitors prioritising lower average rainfall. It is not a promise of dry weather. The unweighted mean across monthly rainfall means is 5.34 mm/day, a summary rather than a monthly total.
Sunshine
Mean daily sunshine is highest in June, at 8.72 hours/day, and lowest in March, at 3.68 hours/day. These figures can help with planning around average daylight conditions for outdoor sightseeing, but sunshine duration is not the same as day length and cannot guarantee clear skies on a visit. The unweighted mean of monthly sunshine means is 6.54 hours/day per day. It provides an overall reference, while the monthly high and low show why visitors may wish to consider their preferred timing for daylight outdoors.
Best Travel Time Guide for Hanoi, Viet Nam: Ideal Seasons and Weather Insights
For visitors prioritising cooler monthly averages, January is the relevant option, with a monthly mean temperature of 16.9 °C; this is not a daytime high or a forecast for any particular date. If lower average rainfall is the main criterion, consider December, when mean daily rainfall is 1.17 mm/day. Rain preparation is especially worth considering for August, with a monthly mean daily amount of 12.57 mm/day; neither average tells you how many days will be wet, so flexible plans and suitable rainwear remain useful. For outdoor plans shaped by average sunshine, June has the highest mean daily duration at 8.72 hours/day, while March has the lowest at 3.68 hours/day. These are separate planning criteria rather than a combined best-time ranking, and sunshine duration does not guarantee clear conditions or indicate day length.
Climate Data Overview for Hanoi, Viet Nam
Explore the comprehensive climate data for Hanoi, Viet Nam. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.
| Month | Average: Temperature °C | Rain (mm) / day | Snow (mm) / day | Sunshine (h) / day |
|---|---|---|---|---|
| Jan | 16.9 | 1.75 | 0.00 | 4.12 |
| Feb | 18.3 | 1.59 | 0.00 | 3.96 |
| Mar | 21.9 | 2.31 | 0.00 | 3.68 |
| Apr | 24.7 | 3.59 | 0.00 | 6.07 |
| May | 28.0 | 6.75 | 0.00 | 8.55 |
| Jun | 29.6 | 7.16 | 0.00 | 8.72 |
| Jul | 29.0 | 9.10 | 0.00 | 8.34 |
| Aug | 28.3 | 12.57 | 0.00 | 7.69 |
| Sep | 27.3 | 9.97 | 0.00 | 7.56 |
| Oct | 24.7 | 5.86 | 0.00 | 7.60 |
| Nov | 22.0 | 2.21 | 0.00 | 6.65 |
| Dec | 17.2 | 1.17 | 0.00 | 5.56 |
| Average | 24.0 | 5.34 | 0.00 | 6.54 |
