Hoàng Mai in Fall
In fall (September, October and November), Hoàng Mai sees average daytime highs around 28°C and overnight lows near 23°C, with 575 mm of rain over about 45 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.
Over the season highs ease from about 32°C in early September to 24°C by late November. The sky is clear or mostly clear about 25% of the time across fall, and the air most often feels miserable.
Fall is Hoàng Mai's 3rd-best season to visit on our travel score. For the whole year in context, see Hoàng Mai's year-round climate.
- Avg daytime high
- 28°C
- 3rd-warmest season
- Avg overnight low
- 23°C
- Rainfall
- 575 mm
- 45 wet days
- Avg wind
- 11 km/h
- Travel score
- 5.0
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Hoàng Mai in Fall
Over the season highs ease from about 32°C in early September to 24°C by late November.
A typical fall day in Hoàng Mai reaches about 28°C and drops to 23°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Hoàng Mai
Once humidity and wind are folded in, fall brings about 44 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Hoàng Mai weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 21° / 16° | 23 | 4.9 | 11 | 6.8 |
| Feb | 22° / 17° | 15 | 3.9 | 11.3 | 7.1 |
| Mar | 25° / 20° | 31 | 5.7 | 11.9 | 7.2 |
| Apr | 29° / 23° | 47 | 7 | 12.4 | 5.5 |
| May | 33° / 26° | 115 | 12.1 | 12.9 | 3.3 |
| Jun | 35° / 28° | 124 | 11.6 | 13.1 | 2.2 |
| Jul | 35° / 28° | 172 | 13.1 | 13 | 2.4 |
| Aug | 33° / 27° | 263 | 20.1 | 12.7 | 2.6 |
| Sep | 31° / 26° | 293 | 19.4 | 12.1 | 3.4 |
| Oct | 29° / 23° | 219 | 16.3 | 11.6 | 5.0 |
| Nov | 26° / 20° | 63 | 9 | 11.1 | 6.7 |
| Dec | 22° / 17° | 30 | 5 | 10.9 | 7.1 |
Cloud cover in Fall
The sky is clear or mostly clear about 25% of the time across fall.
Chance of precipitation in Fall
Hoàng Mai gets around 575 mm of rain over 45 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 11 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 24 min in early September to 10 h 54 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 3.9 kWh/m².
Hazard calendar for Hoàng Mai
In fall, Hoàng Mai overlaps its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.
Hoàng Mai sits in the Pacific typhoon belt; the season peaks July–October.
Hoàng Mai's monsoon runs July–October, when most of the year's rain falls.
Is fall a good time to visit Hoàng Mai?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Hoàng Mai for sightseeing.
What to pack for Hoàng Mai in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Hoàng Mai sees daytime highs around 28°C and nights near 23°C. Pack light clothes and rain gear. About 45 days see rain.
Sea temperature near Hoàng Mai in Fall
The nearest coast averages about 28°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 21 km away) is warmest in August at about 30°C and coldest in February near 21°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 21 | 21 | 22 | 24 | 28 | 30 | 30 | 30 | 30 | 28 | 26 | 23 |
| Comfort | Refreshing | Refreshing | Refreshing | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 21 | Refreshing |
| Feb | 21 | Refreshing |
| Mar | 22 | Refreshing |
| Apr | 24 | Warm |
| May | 28 | Warm |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 28 | Warm |
| Nov | 26 | Warm |
| Dec | 23 | Refreshing |
UV index in Hoàng Mai in Fall
Clear-sky midday UV across fall averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Hoàng Mai peaks around August 11 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 6 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 7 | 9 | 10 | 9 | 10 | 12 | 12 | 13 | 10 | 9 | 7 | 6 |
| Level | Very high | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 7 | Very high |
| Feb | 9 | Very high |
| Mar | 10 | Very high |
| Apr | 9 | Very high |
| May | 10 | Very high |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 10 | Extreme |
| Oct | 9 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Air quality in Hoàng Mai in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Hoàng Mai is worst in April — around 65 µg/m³ PM2.5 (unhealthy), about 3.3× the cleanest month (July, 20 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 65 | 63 | 63 | 65 | 43 | 25 | 20 | 23 | 33 | 46 | 55 | 64 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Moderate | Moderate | Moderate | Moderate | Poor | Poor | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 65 | Unhealthy |
| Feb | 63 | Unhealthy |
| Mar | 63 | Unhealthy |
| Apr | 65 | Unhealthy |
| May | 43 | Poor |
| Jun | 25 | Moderate |
| Jul | 20 | Moderate |
| Aug | 23 | Moderate |
| Sep | 33 | Moderate |
| Oct | 46 | Poor |
| Nov | 55 | Poor |
| Dec | 64 | Unhealthy |
Where is Hoàng Mai?
Hoàng Mai sits at 19.3°N, 105.7°E, 6 m above sea level, in Vietnam. The nearest listed city is Nghi Sơn, 13 km away.
Topography around Hoàng Mai
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Hoàng Mai.
Within 3 km, the terrain around Hoàng Mai has only modest variations in elevation — a maximum elevation change of 211 m around an average of 16 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 420 m; within 80 km, large variations in elevation — a maximum elevation change of 1,079 m.
The land around Hoàng Mai is covered by trees (41%) and cropland (25%) within 3 km, trees (42%) and water (31%) within 16 km, and trees (46%) and water (33%) within 80 km.
Vietnam travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B / C / F
- 220 V · 50 Hz
- Prices
- ≈ 29% of US
- price level, 2025
- GDP per capita
- $5,066
- 2025
- Happiness
- 6.4 / 10
- World Happiness, 2025
- Safe drinking water
- 59%
- of population, 2024
- Homicide rate
- 1.5
- per 100k, 2011
- Road deaths
- 30.6
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Moderate
- EF EPI 500
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Hoàng Mai (19.2676°, 105.7159°, elevation 6 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.