Vietnam Weather in August
In the north: hot, very wet, highs 89°F (32°C). On the central coast: hot, showery, highs 91°F (33°C), sea 88°F (31°C). In the south: hot, rainy, highs 88°F (31°C), sea 86°F (30°C). Rating: Mixed — even on the central coast rain is frequent and days are very hot. September rates Mixed. Humidity runs at 76–85% across the regions.
Mixedrain is frequent, days are very hot
Climate normals were checked on September 29, 2026, over a year ago. An update is due.
Climate normals checked September 29, 2026 · Source: Open-Meteo (ERA5) · How we calculate
Vietnam weather in August by region
| Region | Day high | Night low | Sea | Rainy days | Rainfall | Humidity | Sun, h/day |
|---|---|---|---|---|---|---|---|
| NorthHanoi, Ha Long | 89°F (32°C) | 78°F (26°C) | 89°F (32°C) | 24 | 15.9 in (404 mm) | 85% | 7.9 |
| Central coastDa Nang, Hoi An | 91°F (33°C) | 80°F (27°C) | 88°F (31°C) | 17 | 4.6 in (116 mm) | 76% | 10.5 |
| SouthHo Chi Minh City, Phu Quoc | 88°F (31°C) | 77°F (25°C) | 86°F (30°C) | 29 | 11.6 in (294 mm) | 85% | 9.3 |
Flight time from the US
By distance, flying time to Vietnam is about 17 h from New York (JFK), 15 h 55 min from Los Angeles (LAX) and 15 h 15 min from San Francisco (SFO). Most trips from the US connect, so add at least 2 h for the layover. These are estimates, not schedules.
Other months in Vietnam
- Jan89°FJanuary: Excellent
- Feb92°FFebruary: Good
- Mar78°FMarch: Excellent
- Apr85°FApril: Excellent
- May89°FMay: Excellent
- Jun93°FJune: Good
- Jul91°FJuly: Good
- Aug91°FAugust: Mixed
- Sep87°FSeptember: Mixed
- Oct83°FOctober: Mixed
- Nov79°FNovember: Excellent
- Dec87°FDecember: Excellent
Excellent Good Mixed Off-season
Vietnam in August: FAQ
What's the weather like in Vietnam in August?
In the north it is hot and very wet, with highs of 89°F (32°C). On the central coast it is hot and showery, with highs of 91°F (33°C) and the sea at 88°F (31°C). In the south it is hot and rainy, with highs of 88°F (31°C) and the sea at 86°F (30°C).
Is August a good time to visit Vietnam?
We rate August as Mixed. It can work, with caveats: even on the central coast rain is frequent and days are very hot.
Is August rainy season in Vietnam?
Driest on the central coast, with about 4.6 in (116 mm) of rain and 17 rainy days. In the north: 15.9 in (404 mm); In the south: 11.6 in (294 mm).
How does Vietnam in August compare to September?
September rates Mixed, August rates Mixed. In the best region, August brings highs of 91°F (33°C) and 4.6 in (116 mm) of rain; September brings 87°F (31°C) and 9.5 in (242 mm).
Where the data comes from
- Air temperature, rainfall, humidity — ERA5 reanalysis (Copernicus / ECMWF) via Open-Meteo, averaged over 2015–2024. Each region uses one point: the resort or city in its caption.
- Sea temperature — Open-Meteo Marine, average sea surface temperature for 2023–2026 (the source has no longer record yet).
- Sunshine — sunshine duration from the same ERA5 reanalysis (Open-Meteo), average hours of sun per day for the month, 2015–2024.
- Rainy days — days with at least 1 mm (0.04 in) of rain. Reanalysis picks up light rain more often than weather stations, so treat this as an upper bound.
- Month rating — one rule for every destination, based on three factors: day highs (ideal 75–91°F / 24–33°C), monthly rainfall (ideal under 80 mm / 3.1 in) and, for beach regions, sea temperature (ideal 77°F / 25°C or warmer). All ideal means Excellent; one slightly weaker factor means Good. Mixed means heavy rain (150 mm / 5.9 in or more), highs above 97°F (36°C) or a sea below 70°F (21°C). Off-season means highs of 100°F (38°C) or more, cold below 54°F (12°C), over 350 mm (13.8 in) of rain, or several problems at once. A country's rating follows its best region, so check the regional table.
- Licence — weather data by Open-Meteo.com under CC BY 4.0; ERA5 reanalysis by the Copernicus Climate Change Service / ECMWF. The normals are precomputed and stored on this site, so the page sends no requests to the source.
Checked September 29, 2026. Climate normals are refreshed yearly and the notes every 90 days. These are long-term averages, not a forecast: any given year can differ.
