Vietnam
Hoi An in August: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Hoi An in August is climatically mixed. The average daily high is around 32 °C, and the sea is about 30 °C. With about 18 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
50/100 · #12
Warmth
#3
Dryness
#8
Sun
#4
Sea warmth
#1
Published best categories: none
Hoi An · AugustPhoto: Steffen Schmitz (more photos) · CC BY-SA 4.0Climate facts
- Average high
- 32 °C
- Average low
- 26 °C
- Sea
- 30 °C
- Rainy days (est.)
- 18 rainy days (est.)
- Sun (est.)
- 7 h/day
- Humidity
- 79 %
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 | 32 | 26 | 15 | 98 | 7.4 | 79 | 1.5 | 29 | 54 |
| August (selected) | 32 | 26 | 18 | 154 | 7.2 | 79 | 1.5 | 30 | 50 |
| September | 30 | 25 | 23 | 400 | 6.2 | 83 | 1.8 | 29 | 52 |
How do the previous and next months compare?
Baseline: August (50/100)
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 | +4 | +0.2 °C | ±0 °C | -3.5 | -56.1 mm | +0.2 h | -0.3 % | -0.1 m/s | -0.3 °C |
| September | +2 | -1.6 °C | -0.5 °C | +4.3 | +245.2 mm | -1 h | +3.7 % | +0.2 m/s | -0.4 °C |
All twelve months in context
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Where to stay in Hoi An
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Useful next decisions
Frequently asked questions
How warm is Hoi An in August?
The average daily high is around 32 °C, with an average daily low of about 26 °C.
Can you swim in Hoi An in August?
The sea is about 30 °C (very warm).
Does it rain a lot in Hoi An in August?
The curated estimate is about 18 rainy days per month, not a directly measured long-term average. Total precipitation averages around 154 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Hoi An?
By the climate score, January, February, March and April are the strongest months for Hoi An. For a beach trip: January, February, March and April. August is not among them.