Vietnam Hoi An Weather in August (Pre-Monsoon Storms Begin) — Climate Guide
August (Pre-Monsoon Storms Begin) in Hoi An is moderate
August (Pre-Monsoon Storms Begin) is moderate for Hoi An.
Pre-monsoon transition. Mornings sunny, afternoons increasingly stormy. Crowds drop slightly mid-late month as Asian summer vacations end.
Travel score
Transition month — summer ends + monsoon begins
August (Pre-Monsoon Storms Begin) Weather at a Glance
August is the transition from peak summer to monsoon. 33/25°C with humidity climbing to 80%. UV slightly down to 10. 130mm rain across 11 days = afternoon thunderstorms become daily. Sea remains at 29°C through August. After Aug 15, Korean families return home, leading to a measurable crowd drop.
August (Pre-Monsoon Storms Begin) Travel Advice
Best windows: Aug 16-31 (post-Korean summer break) offers good weather + 30% lower hotel rates. Late afternoon thunderstorms (1-3 hours, 14:00-17:00) become predictable — plan beach + outdoor for mornings. Cham Islands tours start being canceled by late August due to rough seas.
Flying In from Overseas
Korean families flying home Aug 15+. Japanese still active (school holidays through August). Western travelers minimal. DAD flights $400-700 mid-August onward.
August (Pre-Monsoon Storms Begin) Pricing Trends
Anantara Hoi An $300-500/night (post-Aug 15), boutique $120-250/night, hostels $12-35/night.
Hoi An August (Pre-Monsoon Storms Begin) Weather Stats
Avg High
33°C
Avg Low
25°C
Rainy Days
11
130mm total
Sunshine
7h
Daily avg
Humidity
80%
high
UV Index
10
Very high
Wind
9 km/h
Gusts 25
Sea Temp
29°C
swimming
Crowds
Busy
At attractions
August (Pre-Monsoon Storms Begin) Sunrise & Sunset
Air Quality
PM2.5
15 μg/m³
PM10
25 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
37°C
Nighttime
26°C
Humidity and wind affect how the actual temperature feels.
Wind
9 km/h
Max gust 25 km/h
Activities Recommended for August (Pre-Monsoon Storms Begin)
August (Pre-Monsoon Storms Begin) Travel Pros & Cons
Pros
- Crowd drop after Aug 15 — better value
- Sea still warm at 29°C
- Hoi An lantern magic continues despite rain
Cons
- 130mm rain across 11 days — daily afternoon storms
- 80% humidity oppressive
- Cham Islands tours start canceling late month
August (Pre-Monsoon Storms Begin) Events & Festivals
- Korean summer holidays end (Aug 15)
- Pre-monsoon thunderstorms begin
- Vietnamese late-summer travel
Hoi An in August (Pre-Monsoon Storms Begin) — Full Picture
Pre-monsoon transition. Mornings sunny, afternoons increasingly stormy. Crowds drop slightly mid-late month as Asian summer vacations end.
What to Wear & What to Pack
Hot + humid + thunderstorm afternoons — t-shirt + light raincoat + waterproof bag.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
30°C
23°C
4.3/mo
Summer (Jun·Jul·Aug)
Current33.7°C
25.3°C
8.7/mo
Autumn (Sep·Oct·Nov)
28.3°C
22.3°C
13.3/mo
Winter (Dec·Jan·Feb)
25.3°C
19.7°C
7.7/mo
Hoi An Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 25° | 19° | 8d·100mm | 5h | 82% | 6 | Moderate | Shoulder | |
| 26° | 20° | 4d·30mm | 6h | 80% | 7 | Busy | Peak | |
| March (Peak Dry Season) (Best) | 28° | 21° | 4d·25mm | 7h | 80% | 8 | Busy | Peak |
| 30° | 23° | 4d·30mm | 8h | 80% | 10 | Very busy | Peak | |
| 32° | 25° | 5d·50mm | 8h | 80% | 11 | Very busy | Peak | |
| 34° | 26° | 7d·80mm | 8h | 78% | 11 | Very busy | Peak | |
| 34° | 25° | 8d·90mm | 8h | 78% | 11 | Very busy | Peak | |
| 33° | 25° | 11d·130mm | 7h | 80% | 10 | Busy | Shoulder | |
| 31° | 24° | 12d·250mm | 6h | 82% | 8 | Quiet | Low season | |
| 28° | 22° | 15d·530mm | 5h | 85% | 6 | Quiet | Low season | |
| 26° | 21° | 13d·360mm | 5h | 84% | 6 | Quiet | Low season | |
| 25° | 20° | 11d·220mm | 5h | 82% | 5 | Moderate | Shoulder |
View Other Months
Hoi An August (Pre-Monsoon Storms Begin) Hotel Picks
Frequently Asked Questions
Is August (Pre-Monsoon Storms Begin) a good time to visit Hoi An?
Hoi An in August (Pre-Monsoon Storms Begin) is moderate. Tourist crowds are busy and flight/hotel prices are shoulder.
What's the average temperature in Hoi An in August (Pre-Monsoon Storms Begin)?
Hoi An August (Pre-Monsoon Storms Begin) averages a high of 33°C and a low of 25°C.
Does it rain much in Hoi An in August (Pre-Monsoon Storms Begin)?
Hoi An August (Pre-Monsoon Storms Begin) averages 130mm of rainfall over about 11 rainy days.
What should I wear in Hoi An in August (Pre-Monsoon Storms Begin)?
Hot + humid + thunderstorm afternoons — t-shirt + light raincoat + waterproof bag.
What time are sunrise and sunset in Hoi An in August (Pre-Monsoon Storms Begin)?
Hoi An August (Pre-Monsoon Storms Begin) sunrise is 05:35 and sunset is 18:20, with 12h 45min of daylight.
What's the air quality like in Hoi An in August (Pre-Monsoon Storms Begin)?
Hoi An August (Pre-Monsoon Storms Begin) air quality (AQI) averages 42, rated Good. PM2.5 averages 15μg/m³.
What activities are recommended in Hoi An in August (Pre-Monsoon Storms Begin)?
In August (Pre-Monsoon Storms Begin), Hoi An is great for Morning An Bang Beach + Old Town, Cham Islands (early August only), Tailor + cooking class (indoor afternoons).
Is August (Pre-Monsoon Storms Begin) peak season in Hoi An?
Hoi An August (Pre-Monsoon Storms Begin) crowds are busy and prices are shoulder. Advance reservations are strongly recommended.
Best Months to Visit Hoi An
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.