Sơn Tây weather in March
In March, Sơn Tây sees average daytime highs of 25°C and overnight lows near 19°C, with 48 mm of rain across 10.4 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.
Highs climb over the month, from about 23°C in the first days to 26°C by the end. The sky is clear or mostly clear about 11% of the time in March, and the air most often feels muggy.
Daylight stretches from about 11 h 30 min at the start of March to 12 h 12 min by month's end. Set against the rest of the year, March is Sơn Tây's 9th-clearest and 2nd-windiest month. For the whole year in context, see Sơn Tây's year-round climate.
- Daytime high
- 25°
- 9th warmest
- Overnight low
- 19°
- 4th coldest
- Rainfall
- 48 mm
- 10.4 wet days
- Daylight
- 11 h 48 min
- 6:12 AM – 6:03 PM
- Cloud cover
- 78%
- 9th clearest
- Wind
- 7 km/h
- 2nd windiest
- Solar energy
- 2.87 kWh/m²
- Travel score
- 6.4
- out of 10
Sơn Tây is district-level town of Vietnam.
- Density
- 2,032/km²
- people per km²
- Founded
- 2009
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in March
Highs climb over the month, from about 23°C in the first days to 26°C by the end.
A typical March day in Sơn Tây reaches about 25°C in the afternoon and slips back to 19°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 30°C. Set against its neighbours, March runs about 3°C warmer than February and about 4°C cooler than April.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg low (°C) | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 23 | 17 |
| 2 | 23 | 17 |
| 3 | 23 | 17 |
| 4 | 23 | 18 |
| 5 | 24 | 18 |
| 6 | 24 | 18 |
| 7 | 24 | 18 |
| 8 | 24 | 18 |
| 9 | 24 | 18 |
| 10 | 24 | 18 |
| 11 | 24 | 18 |
| 12 | 24 | 18 |
| 13 | 24 | 18 |
| 14 | 24 | 19 |
| 15 | 24 | 19 |
| 16 | 25 | 19 |
| 17 | 25 | 19 |
| 18 | 25 | 19 |
| 19 | 25 | 19 |
| 20 | 25 | 19 |
| 21 | 25 | 19 |
| 22 | 25 | 19 |
| 23 | 25 | 19 |
| 24 | 25 | 20 |
| 25 | 26 | 20 |
| 26 | 26 | 20 |
| 27 | 26 | 20 |
| 28 | 26 | 20 |
| 29 | 26 | 20 |
| 30 | 26 | 20 |
| 31 | 26 | 20 |
How March really feels in Sơn Tây
Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
March sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Sơn Tây weather by month
How March compares with the rest of the year at a glance. March is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 20° / 15° | 37 | 8.3 | 10.9 | 6.2 |
| Feb | 22° / 16° | 26 | 7.9 | 11.3 | 6.5 |
| Mar | 25° / 19° | 48 | 10.4 | 11.9 | 6.4 |
| Apr | 29° / 22° | 81 | 10.7 | 12.5 | 5.2 |
| May | 32° / 25° | 201 | 17.4 | 13 | 3.2 |
| Jun | 33° / 27° | 215 | 18.2 | 13.3 | 2.4 |
| Jul | 33° / 27° | 251 | 20.5 | 13.2 | 2.4 |
| Aug | 33° / 26° | 311 | 22.1 | 12.7 | 2.5 |
| Sep | 32° / 25° | 201 | 17.9 | 12.1 | 3.3 |
| Oct | 29° / 23° | 100 | 10.5 | 11.5 | 5.4 |
| Nov | 26° / 19° | 48 | 6.7 | 11 | 7.2 |
| Dec | 22° / 16° | 29 | 6.5 | 10.7 | 7.1 |
Cloud cover in March
The sky is clear or mostly clear about 11% of the time in March.
Beyond those clear spells, partly cloudy skies cover about 12% of March, with mostly cloudy or overcast conditions the remaining 78%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 23 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 22 | 22 | 22 | 22 |
| Cloudier (%) | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 76 | 77 | 77 | 77 | 77 | 78 | 79 | 79 | 79 | 79 | 79 | 79 | 79 | 79 | 79 | 79 | 79 | 79 | 80 | 78 | 78 | 78 | 78 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 25 | 75 |
| 2 | 25 | 75 |
| 3 | 25 | 75 |
| 4 | 25 | 75 |
| 5 | 25 | 75 |
| 6 | 25 | 75 |
| 7 | 25 | 75 |
| 8 | 25 | 75 |
| 9 | 24 | 76 |
| 10 | 23 | 77 |
| 11 | 23 | 77 |
| 12 | 23 | 77 |
| 13 | 23 | 77 |
| 14 | 22 | 78 |
| 15 | 21 | 79 |
| 16 | 21 | 79 |
| 17 | 21 | 79 |
| 18 | 21 | 79 |
| 19 | 21 | 79 |
| 20 | 21 | 79 |
| 21 | 21 | 79 |
| 22 | 21 | 79 |
| 23 | 21 | 79 |
| 24 | 21 | 79 |
| 25 | 21 | 79 |
| 26 | 21 | 79 |
| 27 | 20 | 80 |
| 28 | 22 | 78 |
| 29 | 22 | 78 |
| 30 | 22 | 78 |
| 31 | 22 | 78 |
Chance of precipitation in March
Sơn Tây gets around 48 mm of rain over 10.4 wet days in March. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 34% and peaks near 38% on the wettest days. The odds climb toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 31 | 32 | 32 | 33 | 34 | 34 | 35 | 35 | 36 | 36 | 36 | 37 | 37 | 37 | 38 | 38 | 38 | 38 | 38 | 37 | 37 | 37 |
| Rain chance (%) | |
|---|---|
| 1 | 29 |
| 2 | 29 |
| 3 | 29 |
| 4 | 29 |
| 5 | 29 |
| 6 | 29 |
| 7 | 30 |
| 8 | 30 |
| 9 | 30 |
| 10 | 31 |
| 11 | 32 |
| 12 | 32 |
| 13 | 33 |
| 14 | 34 |
| 15 | 34 |
| 16 | 35 |
| 17 | 35 |
| 18 | 36 |
| 19 | 36 |
| 20 | 36 |
| 21 | 37 |
| 22 | 37 |
| 23 | 37 |
| 24 | 38 |
| 25 | 38 |
| 26 | 38 |
| 27 | 38 |
| 28 | 38 |
| 29 | 37 |
| 30 | 37 |
| 31 | 37 |
Humidity in March
Most of March feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, March lands in the muggy band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 51% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 21 | 21 | 20 | 19 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 11 | 10 | 9 | 9 | 8 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 4 |
| Comfortable (%) | 23 | 23 | 23 | 22 | 22 | 22 | 21 | 20 | 20 | 19 | 18 | 17 | 17 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 11 | 11 | 10 | 9 |
| Humid (%) | 20 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 19 | 19 | 18 |
| Muggy (%) | 24 | 24 | 24 | 24 | 25 | 25 | 26 | 27 | 27 | 28 | 28 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 |
| Oppressive (%) | 12 | 12 | 13 | 13 | 13 | 14 | 14 | 15 | 16 | 16 | 17 | 18 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 28 | 29 | 29 | 30 | 30 | 31 | 31 | 32 | 32 | 33 |
| Miserable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 4 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 21 | 23 | 20 | 24 | 12 | 0 |
| 2 | 21 | 23 | 21 | 24 | 12 | 0 |
| 3 | 20 | 23 | 21 | 24 | 13 | 0 |
| 4 | 19 | 22 | 21 | 24 | 13 | 0 |
| 5 | 19 | 22 | 21 | 25 | 13 | 0 |
| 6 | 18 | 22 | 22 | 25 | 14 | 0 |
| 7 | 17 | 21 | 22 | 26 | 14 | 0 |
| 8 | 16 | 20 | 22 | 27 | 15 | 0 |
| 9 | 15 | 20 | 23 | 27 | 16 | 0 |
| 10 | 14 | 19 | 23 | 28 | 16 | 0 |
| 11 | 13 | 18 | 23 | 28 | 17 | 0 |
| 12 | 12 | 17 | 23 | 29 | 18 | 0 |
| 13 | 11 | 17 | 23 | 29 | 20 | 0 |
| 14 | 11 | 16 | 23 | 29 | 21 | 0 |
| 15 | 10 | 16 | 23 | 30 | 22 | 0 |
| 16 | 9 | 16 | 22 | 30 | 23 | 0 |
| 17 | 9 | 15 | 22 | 30 | 24 | 0 |
| 18 | 8 | 15 | 22 | 30 | 25 | 0 |
| 19 | 7 | 15 | 22 | 30 | 26 | 0 |
| 20 | 7 | 15 | 22 | 30 | 27 | 0 |
| 21 | 6 | 14 | 21 | 31 | 28 | 0 |
| 22 | 6 | 14 | 21 | 30 | 28 | 1 |
| 23 | 6 | 14 | 21 | 30 | 29 | 1 |
| 24 | 6 | 13 | 21 | 30 | 29 | 1 |
| 25 | 5 | 13 | 20 | 30 | 30 | 1 |
| 26 | 5 | 13 | 20 | 31 | 30 | 1 |
| 27 | 5 | 12 | 20 | 31 | 31 | 2 |
| 28 | 5 | 11 | 20 | 31 | 31 | 2 |
| 29 | 5 | 11 | 19 | 31 | 32 | 2 |
| 30 | 5 | 10 | 19 | 31 | 32 | 3 |
| 31 | 4 | 9 | 18 | 31 | 33 | 4 |
Wind in March
Winds average 7 km/h in March.
Across March, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in March
Daylight runs from about 11 h 30 min at the start of March to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 42 minutes over March. Sunrise moves from 6:25 AM to 5:58 AM, and sunset from 5:58 PM to 6:08 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 |
| Sunrise (AM) | 6:25 | 6:24 | 6:23 | 6:23 | 6:22 | 6:21 | 6:20 | 6:19 | 6:18 | 6:17 | 6:17 | 6:16 | 6:15 | 6:14 | 6:13 | 6:12 | 6:11 | 6:10 | 6:09 | 6:08 | 6:08 | 6:07 | 6:06 | 6:05 | 6:04 | 6:03 | 6:02 | 6:01 | 6:00 | 5:59 | 5:58 |
| Sunset (PM) | 5:58 | 5:58 | 5:58 | 5:59 | 5:59 | 6:00 | 6:00 | 6:00 | 6:01 | 6:01 | 6:01 | 6:02 | 6:02 | 6:02 | 6:03 | 6:03 | 6:03 | 6:04 | 6:04 | 6:04 | 6:05 | 6:05 | 6:05 | 6:06 | 6:06 | 6:06 | 6:07 | 6:07 | 6:07 | 6:07 | 6:08 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 6:25 | 5:58 |
| 2 | 11.6 | 6:24 | 5:58 |
| 3 | 11.6 | 6:23 | 5:58 |
| 4 | 11.6 | 6:23 | 5:59 |
| 5 | 11.6 | 6:22 | 5:59 |
| 6 | 11.6 | 6:21 | 6:00 |
| 7 | 11.7 | 6:20 | 6:00 |
| 8 | 11.7 | 6:19 | 6:00 |
| 9 | 11.7 | 6:18 | 6:01 |
| 10 | 11.7 | 6:17 | 6:01 |
| 11 | 11.7 | 6:17 | 6:01 |
| 12 | 11.8 | 6:16 | 6:02 |
| 13 | 11.8 | 6:15 | 6:02 |
| 14 | 11.8 | 6:14 | 6:02 |
| 15 | 11.8 | 6:13 | 6:03 |
| 16 | 11.8 | 6:12 | 6:03 |
| 17 | 11.9 | 6:11 | 6:03 |
| 18 | 11.9 | 6:10 | 6:04 |
| 19 | 11.9 | 6:09 | 6:04 |
| 20 | 11.9 | 6:08 | 6:04 |
| 21 | 12.0 | 6:08 | 6:05 |
| 22 | 12.0 | 6:07 | 6:05 |
| 23 | 12.0 | 6:06 | 6:05 |
| 24 | 12.0 | 6:05 | 6:06 |
| 25 | 12.0 | 6:04 | 6:06 |
| 26 | 12.1 | 6:03 | 6:06 |
| 27 | 12.1 | 6:02 | 6:07 |
| 28 | 12.1 | 6:01 | 6:07 |
| 29 | 12.1 | 6:00 | 6:07 |
| 30 | 12.1 | 5:59 | 6:07 |
| 31 | 12.2 | 5:58 | 6:08 |
Solar energy in March
Average shortwave solar energy reaching the ground each day in March, about 2.87 kWh/m².
For context, solar energy here swings from a low near 2.1 kWh/m² to a high of 4.78 kWh/m² in June across the year — March's 2.87 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.9 | 2.9 | 2.9 | 2.9 | 3.0 | 3.0 | 3.0 | 3.0 | 3.1 | 3.1 | 3.1 | 3.2 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 2.7 | Moderate |
| 2 | 2.7 | Moderate |
| 3 | 2.7 | Moderate |
| 4 | 2.7 | Moderate |
| 5 | 2.7 | Moderate |
| 6 | 2.8 | Moderate |
| 7 | 2.8 | Moderate |
| 8 | 2.8 | Moderate |
| 9 | 2.8 | Moderate |
| 10 | 2.8 | Moderate |
| 11 | 2.8 | Moderate |
| 12 | 2.8 | Moderate |
| 13 | 2.8 | Moderate |
| 14 | 2.8 | Moderate |
| 15 | 2.8 | Moderate |
| 16 | 2.8 | Moderate |
| 17 | 2.8 | Moderate |
| 18 | 2.8 | Moderate |
| 19 | 2.8 | Moderate |
| 20 | 2.9 | Moderate |
| 21 | 2.9 | Moderate |
| 22 | 2.9 | Moderate |
| 23 | 2.9 | Moderate |
| 24 | 3.0 | Moderate |
| 25 | 3.0 | Moderate |
| 26 | 3.0 | Moderate |
| 27 | 3.0 | Moderate |
| 28 | 3.1 | Moderate |
| 29 | 3.1 | Moderate |
| 30 | 3.1 | Moderate |
| 31 | 3.2 | Moderate |
Hazard calendar for Sơn Tây
In March, Sơn Tây sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Sơn Tây sits in the Pacific typhoon belt; the season peaks July–October.
Sơn Tây's monsoon runs May–September, when most of the year's rain falls.
Is March a good time to visit Sơn Tây?
Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
March is a reasonable time to visit Sơn Tây for sightseeing.
What to pack for Sơn Tây in March
From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In March, Sơn Tây sees daytime highs around 25°C and nights near 19°C. Worth packing: light clothes and rain gear. About 10 days see rain.
UV index in Sơn Tây in March
Clear-sky midday UV in March peaks 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 Sơn Tây peaks around June 20 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 21 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) | 6 | 7 | 9 | 6 | 7 | 11 | 10 | 9 | 7 | 8 | 6 | 6 |
| Level | High | High | Very high | High | Very high | Extreme | Extreme | Very high | High | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 7 | High |
| Mar | 9 | Very high |
| Apr | 6 | High |
| May | 7 | Very high |
| Jun | 11 | Extreme |
| Jul | 10 | Extreme |
| Aug | 9 | Very high |
| Sep | 7 | High |
| Oct | 8 | Very high |
| Nov | 6 | High |
| Dec | 6 | High |
Air quality in Sơn Tây in March
Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.
Air quality in Sơn Tây is worst in December — around 171 µg/m³ PM2.5 (very unhealthy), about 3.4× the cleanest month (July, 50 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) | 161 | 136 | 122 | 106 | 76 | 59 | 50 | 68 | 96 | 125 | 152 | 171 |
| Level | Very unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Unhealthy | Unhealthy | Unhealthy | Very unhealthy | Very unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 161 | Very unhealthy |
| Feb | 136 | Unhealthy |
| Mar | 122 | Unhealthy |
| Apr | 106 | Unhealthy |
| May | 76 | Unhealthy |
| Jun | 59 | Unhealthy |
| Jul | 50 | Poor |
| Aug | 68 | Unhealthy |
| Sep | 96 | Unhealthy |
| Oct | 125 | Unhealthy |
| Nov | 152 | Very unhealthy |
| Dec | 171 | Very unhealthy |
Where is Sơn Tây?
Sơn Tây sits at 21.1°N, 105.5°E, 16 m above sea level, in Vietnam. The nearest listed city is Ba Vì, 14 km away.
Topography around Sơn Tây
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sơn Tây.
Within 3 km, the terrain around Sơn Tây has only modest variations in elevation — a maximum elevation change of 32 m around an average of 13 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 694 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,677 m.
The land around Sơn Tây is covered by trees (42%), artificial surfaces (22%) and cropland (21%) within 3 km, trees (44%) and cropland (33%) within 16 km, and trees (66%) and cropland (22%) 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 Sơn Tây (21.1405°, 105.5069°, elevation 16 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).