Hong Kong
Hong Kong in August: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Hong Kong in August is climatically mixed. The average daily high is around 30 °C, and the sea is about 29 °C. With about 23 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
53/100 · #11
Warmth
#2
Dryness
#12
Sun
#2
Sea warmth
#2
Published best categories: none
Hong Kong · AugustPhoto: Diliff · CC BY-SA 3.0Climate facts
- Average high
- 30 °C
- Average low
- 27 °C
- Sea
- 29 °C
- Rainy days (est.)
- 23 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 85 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| July | 30 | 27 | 21 | 230 | 6.8 | 85 | 3.5 | 29 | 53 |
| August (selected) | 30 | 27 | 23 | 276 | 6.3 | 85 | 3.1 | 29 | 53 |
| September | 30 | 26 | 17 | 180 | 6.0 | 82 | 3.3 | 28 | 59 |
How do the previous and next months compare?
Baseline: August (53/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| July | ±0 | +0.1 °C | +0.2 °C | -1.8 | -46.2 mm | +0.5 h | +0.1 % | +0.4 m/s | +0.1 °C |
| September | +6 | -0.3 °C | -1.2 °C | -6.3 | -95.3 mm | -0.3 h | -3.5 % | +0.2 m/s | -0.3 °C |
All twelve months in context

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Useful next decisions
Frequently asked questions
How warm is Hong Kong in August?
The average daily high is around 30 °C, with an average daily low of about 27 °C.
Can you swim in Hong Kong in August?
The sea is about 29 °C (very warm).
Does it rain a lot in Hong Kong in August?
The curated estimate is about 23 rainy days per month, not a directly measured long-term average. Total precipitation averages around 276 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Hong Kong?
By the climate score, March, October, November and December are the strongest months for Hong Kong. For a beach trip: April, May, October and November. August is not among them.