Phú Mỹ in Fall
In fall (September, October and November), Phú Mỹ sees average daytime highs around 31°C and overnight lows near 25°C, with 733 mm of rain over about 74 wet days across the season. It is the coldest season of the year and the 2nd-wettest season.
Across fall, daytime highs hold fairly steady around 31°C. The sky is clear or mostly clear about 8% of the time across fall, and the air most often feels miserable.
Fall is Phú Mỹ's 3rd-best season to visit on our travel score. For the whole year in context, see Phú Mỹ's year-round climate.
- Avg daytime high
- 31°C
- coldest season of the year
- Avg overnight low
- 25°C
- Rainfall
- 733 mm
- 74 wet days
- Avg wind
- 6 km/h
- Travel score
- 2.9
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Phú Mỹ in Fall
Across fall, daytime highs hold fairly steady around 31°C.
A typical fall day in Phú Mỹ reaches about 31°C and drops to 25°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Phú Mỹ
Once humidity and wind are folded in, fall brings about 91 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.
Phú Mỹ 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 | 31° / 23° | 26 | 4.1 | 11.4 | 5.2 |
| Feb | 32° / 24° | 10 | 2 | 11.6 | 4.9 |
| Mar | 33° / 25° | 24 | 4.6 | 11.9 | 4.0 |
| Apr | 34° / 26° | 68 | 11.9 | 12.2 | 3.1 |
| May | 33° / 26° | 207 | 24.4 | 12.5 | 2.3 |
| Jun | 31° / 26° | 268 | 27.6 | 12.6 | 2.4 |
| Jul | 31° / 25° | 285 | 29.3 | 12.6 | 2.5 |
| Aug | 31° / 25° | 294 | 29.3 | 12.4 | 2.5 |
| Sep | 31° / 25° | 317 | 28.6 | 12.1 | 2.4 |
| Oct | 31° / 25° | 272 | 27.5 | 11.8 | 2.7 |
| Nov | 31° / 24° | 144 | 17.8 | 11.5 | 3.7 |
| Dec | 30° / 23° | 72 | 10.5 | 11.4 | 4.7 |
Cloud cover in Fall
The sky is clear or mostly clear about 8% of the time across fall.
Chance of precipitation in Fall
Phú Mỹ gets around 733 mm of rain over 74 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 6 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 12 min in early September to 11 h 24 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 4.7 kWh/m².
Hazard calendar for Phú Mỹ
In fall, Phú Mỹ overlaps its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Phú Mỹ sits in the Pacific typhoon belt; the season peaks July–October.
Phú Mỹ's rainy season runs May–November, when most of the year's rain falls.
Is fall a good time to visit Phú Mỹ?
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 weaker month for outdoor sightseeing in Phú Mỹ.
What to pack for Phú Mỹ in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Phú Mỹ sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 74 days see rain.
Sea temperature near Phú Mỹ 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 29 km away) is warmest in May at about 30°C and coldest in January near 26°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) | 26 | 26 | 27 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 28 | 27 |
| Comfort | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 26 | Warm |
| Feb | 26 | Warm |
| Mar | 27 | Warm |
| Apr | 29 | Tropical |
| May | 30 | Tropical |
| Jun | 29 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Tropical |
| Dec | 27 | Warm |
UV index in Phú Mỹ in Fall
Clear-sky midday UV across fall averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Phú Mỹ peaks around March 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 16 at about 9 (very 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) | 11 | 12 | 13 | 13 | 13 | 11 | 12 | 12 | 12 | 9 | 9 | 9 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 9 | Very high |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in Phú Mỹ 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 Phú Mỹ is worst in October — around 34 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (March, 21 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) | 26 | 21 | 21 | 21 | 25 | 30 | 29 | 29 | 33 | 34 | 31 | 34 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 26 | Moderate |
| Feb | 21 | Moderate |
| Mar | 21 | Moderate |
| Apr | 21 | Moderate |
| May | 25 | Moderate |
| Jun | 30 | Moderate |
| Jul | 29 | Moderate |
| Aug | 29 | Moderate |
| Sep | 33 | Moderate |
| Oct | 34 | Moderate |
| Nov | 31 | Moderate |
| Dec | 34 | Moderate |
Where is Phú Mỹ?
Phú Mỹ sits at 10.6°N, 107.1°E, 12 m above sea level, in Vietnam. The nearest listed city is Xóm Mỹ Xuân, 2.0 km away.
Topography around Phú Mỹ
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Phú Mỹ.
Within 3 km, the terrain around Phú Mỹ has only modest variations in elevation — a maximum elevation change of 42 m around an average of 17 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 515 m; within 80 km, large variations in elevation — a maximum elevation change of 911 m.
The land around Phú Mỹ is covered by trees (33%), artificial surfaces (33%) and grassland (20%) within 3 km, trees (41%) within 16 km, and trees (41%) and water (31%) 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 Phú Mỹ (10.6333°, 107.0667°, elevation 12 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.