Temperature
Hot by day, warm at night.
89°Ftypical August high
Typical range
August climate
August in Ha Long Bay
Vietnam · Asia
Not the best time: Typhoon risk near peak and humid air are the main limitations.
Not an ideal month
Daytime high
89°F
Lows around 80°F
Rain
Rain most days
Sun
8.5 h/day
Air feel
Very humid
Sea temp
85°F
Great for swimming
When to visit
Month-by-month fit
Best
Precipitation
It rains on most days, with a mix of brief and longer spells. About 26 wet days, the highest monthly average.
84%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
8.3 hAugust sunshine
Heat & humidity by month
Very humid air is a major factor this month.
98%August Heat feel
Easy airWarm airHot airHumid airVery humid air
Hourly temperature pattern
In August, afternoons feel about 97° and nights feel near 90°.
CoolComfortableWarmHotSwelteringNight hours
Clear sky
Overcast skies this month.
17%August Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in August.
5 mphAugust Calm
Sea temperature
85°FAugust sea temp
More detailIncludes daypart comfort
Typical August day
August late afternoons are around 86°F, easing to about 84°F in early evening.
Avg temp Typical range
Morning85°F
Feels 95°F
Rain58%
Cloud83%
Humid airVery high
Sun intensityModerate
Midday88°F
Feels 97°F
Rain67%
Cloud84%
Humid airVery high
Sun intensityStrong
Late afternoon86°F
Feels 96°F
Rain60%
Cloud83%
Humid airVery high
Sun intensityModerate
Early evening84°F
Feels 94°F
Rain27%
Cloud81%
Humid airVery high
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 67 | 59 | 1.3 | 6 | 5.4 | 79 | 70 |
| Feb | 69 | 61 | 0.9 | 6 | 5.5 | 82 | 70 |
| Mar | 74 | 66 | 1.6 | 9 | 6.4 | 85 | 72 |
| Apr | 81 | 73 | 2.9 | 12 | 8.7 | 84 | 76 |
| May | 87 | 78 | 8.7 | 20 | 9.3 | 83 | 82 |
| Jun | 90 | 82 | 10.4 | 22 | 8.7 | 83 | 85 |
| Jul | 90 | 81 | 11.8 | 25 | 8.6 | 84 | 85 |
| Aug | 89 | 80 | 15.0 | 26 | 8.3 | 85 | 85 |
| Sep | 88 | 78 | 10.3 | 21 | 9.0 | 83 | 85 |
| Oct | 85 | 74 | 4.5 | 13 | 9.5 | 77 | 82 |
| Nov | 79 | 68 | 2.0 | 9 | 8.5 | 76 | 78 |
| Dec | 71 | 61 | 1.1 | 6 | 6.7 | 73 | 74 |
Similar climates
Similar
Similar travel styleKampotCambodiaSimilar travel styleDavaoPhilippinesSimilar travel styleDominicaDominicaSimilar travel styleSamanaDominican Republic
Want a side-by-side climate view? Compare Ha Long Bay with Kampot.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology