These are notes on Vietnam weather in August 2023 and what to know before planning travel vacations to Vietnam in 2023, be it your family vacations or your travelers’ Vietnam tours if you are a tour company or travel agency.
General Weather Patterns in Vietnam in August
August is transitional time between summer and autumn in northern Vietnam, transitional time between the hot season and the rainy season in the Central Coast of Vietnam. There is often heavy rain in the North of Vietnam, especially in the far northern mountains.
As the Southeasterly Wind is more active, all of the North of Vietnam is to have more days with nice temperatures. And the Northwest of Vietnam is almost not under impact of the foehn wind. In August, the provinces of Son La, Dien Bien and Lai Chau are more likely to have extremely pleasant temperatures.
It is possible that there are typhoons or tropical depressions which may have impact in Northern Vietnam and North of the Central Coast. The typhoons often cause torrential rain in the far Northern Mountain which may cause landslides, rockslides or flash floods. Under impact of a typhoon or tropical depression, cruises on Halong Bay are banned.
In the Central Highlands and Southern Vietnam, August is the rainy season. Traveling in these two regions in August you are to expect a daily rain which is sometimes quite heavy. Due to bad sewage systems that streets in cities are temporarily flooded which disrupts traffic.
And in the Central Highlands heavy rain may cause flash floods and landslides. Thanks to the rain that the temperatures are extremely pleasant in the Central Highlands and mostly nice and pleasant in the South of Vietnam.
Weather Dangers: Be extra cautious to flash floods or landslides, rock slides if you have to travel in these regions
- Far northern mountains of Vietnam, especially Route 6 at the Thung Khe Pass in Mai Chau, Hoa Binh Province.
- Route 32 in Mu Cang Chai (especially between Nga Ba Kim and Mu Cang Chai Township).
- Than Uyen District (Lai Chau Province).
- The Khanh Le Pass between Da Lat City (Lam Dong) and Nha Trang City (Khanh Hoa).
- The Bao Loc Pass between Da Lat (Lam Dong Province) and Dong Nai Province.
- Namphao (Laos, Bolikhamxay Province) – Cau Treo (Vietnam, Ha Tinh Province): it may be flooded and travel on this route is not possible.
- The provinces at the base of the Central Highlands: Binh Phuoc, Dong Nai (Cat Tien National Park)… Heavy rain may causes floods in these places.
First 10 Days of August 2023
At the end of July and beginning of August there was torrential rain in the Central Highlands and Southern Vietnam which caused fatal landslides on the Bao Loc Pass, high water levels and floods in Binh Phuoc and around the area of the Cat Tien National Park.
There was continual rain in the far Northern of Vietnam at the beginning of August 2023 and dangerous rock slides at the Thung Khe Pass between Tan Lac District and Mai Chau District of Hoa Binh Province.
Rainfalls measured in 20 hours from 19:00 hours of 5-August: Khoen On (Lai Châu) 218.6mm, Chiềng Lao 1 (Sơn La) 142.2mm, Mồ Dề 2 (Yên Bái) 131.8mm,…
Rainfalls measured in 6 hours from 11:00 hours of 6-August: Yên Thuận79,8mm (Tuyên Quang), Quyết Thắng 67,2mm (Lạng Sơn),...
The weather patterns and temperatures in different regions at the beginning of August 2023 were as follows:
- Northeast of Vietnam: rain, 24-31oC;
- Northwest of Vietnam: rain, 24-32oC in Hoa Binh, Yen Bai, Lao Cai; rain, 23-28oC Son La and Dien Bien; 23-31oC in Lai Chau;
- Lowlands in northern Vietnam: clouds, rain, 27-33oC;
- North of the Central Coast: rain in Thanh Hoa, clouds in the others, 28-34oC mostly;
- Central Coast from Quang Binh to Hue: sun, 29-39oC mostly, 28-35oC in Quang Binh;
- Central Coast from Da Nang to Quy Nhon: sun, 27-37oC;
- Central Coast from Tuy Hoa to Nha Trang: sun, clouds, rain, 28-38oC;
- Central Coast in Phan Rang-Thap Cham : sun, 27-39oC;
- Central Coast in Phan Thiet: sun, 26-34oC;
- Central Highlands: clouds, mostly rain, 21-30oC mostly, 22-33oC in Buon Ma Thuot;
- East of Southern Vietnam (Ho Chi Minh City, Dong Nai, Binh Duong, Binh Phuoc, Tay Ninh): rain, clouds, 26-33oC mostly, 26-34oC in Tay Ninh;
- West of Southern Vietnam ( The Mekong Delta): clouds, rain, 26-32oC mostly, 26-33oC in An Giang.
Second 10 Days of August 2023
The second 10 days of August 2023 marked the continuing heat strike in the Central Coast of Vietnam, continual rain in all of Northern Vietnam after brief pause in the lowland.
High recorded temperatures on 10-August: Đô Lương (Nghệ An), Hương Khê (Hà Tĩnh), Đông Hà (Quảng Trị) 37.2oC, Huế City 38.6oC, Đà Nẵng 37.6oC, Tam Kỳ (Quảng Nam) 38.6oC, Ba Tơ (Quảng Ngãi) 38.0oC, Hoài Nhơn (Bình Định) 37.6oC, Tuy Hòa (Phú Yên) 38.6oC,… Humidity was around 45-55%.
The weather in different regions in Vietnam:
- Northeast of Vietnam: rain, 24-31oC;
- Northwest of Vietnam: rain, 26-31,32,33oC in Hoa Binh, Yen Bai, Lao Cai respectively; rain, 23-29oC in Son La, Dien Bien; 22-28oC in Lai Chau;
- Lowlands in northern Vietnam: srain, 26-33oC;
- North of the Central Coast: rain, 27-33oC in Thanh Hoa; sun, clouds, 28-33oC in the others;
- Central Coast from Quang Binh to Hue: sun, clouds, 28-38oC;
- Central Coast from Da Nang to Quy Nhon: sun, clouds, isolated rain, 28-37oC mostly;
- Central Coast from Tuy Hoa to Nha Trang: sun, clouds, some rain, 28-38oC in Tuy Hoa, 26-36oC in Nha Trang;
- Central Coast from Phan Rang-Thap Cham to Phan Thiet: sun, clouds, rain, 27-38oC in Phan Rang and 26-34oc in Phan Thiet;
- Central Highlands: rain, 21-28oC in Pleiku, 22-30 in Kon Tum, 23-31oC in Dak Lak;
- East of Southern Vietnam (Ho Chi Minh City, Dong Nai, Binh Duong, Binh Phuoc, Tay Ninh): rain, 26-34oC;
- West of Southern Vietnam ( The Mekong Delta): sun, clouds, rain, 25-32oC mostly, 26-33oC in An Giang.
Last 10 Days of August 2023
In the last decade of August 2023, the North had more rain, especially in the far northern mountains. The lowland of Northern Vietnam had rain alternated by cloudy and sunny days. The temperatures are pleasant in the North. Also, the North seemed to have to first spell of mild Northeasterly Monsoon (Winer Monsoon) on the last days of August: Autumn is just around quite earlier than usual!!!
The Central Coast of Vietnam continued to have high temperatures and mostly dry days.
The Central Highlands and Southern Vietnam continued to have rain and heavy rain. Long-lasting rain caused temporary flood in Bao Loc City of Lam Dong Province.
Rainfalls measured in 13 hours from 19:00 hours of 17-August: Mường Sai (Sơn La) 117.8mm, Chiềng Bằng (Sơn La) 111.8mm, Bằng Luân (Phú Thọ) 178mm, Đạo Viện (Tuyên Quang) 167.2mm, Đoan Hùng (Phú Thọ) 144.4mm, Quế Võ (Bắc Ninh) 105mm, Tiên Sơn (Bắc Giang) 103.2mm, Thanh Xuân (Hà Nội) 113mm,…
Rainfalls measured in 6 hours on 28-August: Nà Pó 126,8mm, Mường Sại 120,2 mm (Sơn La); Pac Ma 86,4mm, Mù Cả 80,6mm (Lai Châu); Tuần Giáo 65,8mm (Điện Biên);
High recorded temperatures on 27-August: Tĩnh Gia (Thanh Hóa) 38.2oC, Đô Lương (Nghệ An) 38.1oC, tp Huế (Thừa Thiên Huế) 38.7oC, Tam Kỳ (Quảng Nam) 38.4oC, Ba Tơ (Quảng Ngãi) 39.7oC, Hoài Nhơn (Bình Định) 38.4oC… Humidity was around 45-55%.
Regional weather at the end of the last 10 days of August 2023
- Northeast : sun, clouds, isolated rain, 21-30oC in Lang Son, 21-32oC in the other provinces;
- Northwest : sun, clouds, rain, 22-31oC in Hoa Binh, 23-34oC in Yen Bai & Lao Cai; 20-30oC in Son La, Lai Chau, Dien Bien;
- Lowlands in Northern Vietnam: sun, clouds, isolated rain, 23-33oC ;
- North of the Central Coast: clouds, sun, rain, 25-33oC;
- Mid Central Coast to the north of Hai Van: sun, clouds, rain, 27-38oC;
- Mid Central Coast to the south of Hai Van: sun, clouds, rain, 26-37oC;
- South Central Coast (Quy Nhon – Nha Trang): sun, clouds, rain, 27-37oC mostly, 27-35oC in Nha Trang;
- South Central Coast ( Phan Rang-Thap Cham to Phan Thiet : sun, 27-37oC in Phan Rang; rain, clouds, 26-34oC in Phan Thiet ;
- Central Highlands : clouds, rain, 21-29oC;
- East of Southern Vietnam (Ho Chi Minh City, Dong Nai, Binh Duong, Binh Phuoc, Tay Ninh): rain, clouds, 26-34oC;
- West of Southern Vietnam ( The Mekong Delta): clouds, rain, 24-32oC, 26-33oC in An Giang;
The Phu Quoc Island had rain mostly, 26-29oC.
Coming towards the end of August 2023, there was heavy rain in the Central Coast, in the Central Highlands and in Southern Vietnam. The rainy season in the Central Coast of Vietnam is about to start.
Rainfalls measured in 12 hours from the 13:00 hours of 30-August: Phổ Phong (Quảng Ngãi) 181.4mm, Trà My (Quảng Nam) 106.4mm, Mỹ An (Bình Định) 157.5mm, Phước Kháng (Ninh Thuận) 90.0mm, Gia An (Bình Thuận) 66.2mm, Krông Nô (Đắk Lắk) 71.6mm, Đắk Ngo (Đắk Nông) 103.0mm, Thượng Krông Knô (Lâm Đồng) 102.8mm,…
