Ðông Hà weather in September
In September, Ðông Hà sees average daytime highs of 31°C and overnight lows near 25°C, with 298 mm of rain across 20.3 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.
Highs ease over the month, from about 32°C in the first days to 30°C by the end. The sky is clear or mostly clear about 10% of the time in September, and the air most often feels oppressive.
Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Ðông Hà's 9th-clearest and 9th-windiest month. For the whole year in context, see Ðông Hà's year-round climate.
- Daytime high
- 31°
- 5th warmest
- Overnight low
- 25°
- 8th coldest
- Rainfall
- 298 mm
- 20.3 wet days
- Daylight
- 12 h 06 min
- 5:43 AM – 5:49 PM
- Cloud cover
- 81%
- 9th clearest
- Wind
- 8 km/h
- 9th windiest
- Solar energy
- 4.53 kWh/m²
- Travel score
- 3.2
- out of 10
Ðông Hà is provincial city in Vietnam.
- Density
- 2,251/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 32°C in the first days to 30°C by the end.
A typical September day in Ðông Hà reaches about 31°C in the afternoon and slips back to 25°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 34°C. Set against its neighbours, September runs about 2°C cooler than August and about 3°C warmer than October.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 32 | 25 |
| 2 | 32 | 25 |
| 3 | 32 | 25 |
| 4 | 32 | 25 |
| 5 | 32 | 25 |
| 6 | 32 | 25 |
| 7 | 32 | 25 |
| 8 | 32 | 25 |
| 9 | 32 | 25 |
| 10 | 32 | 25 |
| 11 | 31 | 25 |
| 12 | 31 | 25 |
| 13 | 31 | 25 |
| 14 | 31 | 25 |
| 15 | 31 | 25 |
| 16 | 31 | 24 |
| 17 | 31 | 24 |
| 18 | 31 | 24 |
| 19 | 31 | 24 |
| 20 | 30 | 24 |
| 21 | 30 | 24 |
| 22 | 30 | 24 |
| 23 | 30 | 24 |
| 24 | 30 | 24 |
| 25 | 30 | 24 |
| 26 | 30 | 24 |
| 27 | 30 | 24 |
| 28 | 30 | 24 |
| 29 | 30 | 24 |
| 30 | 29 | 24 |
How September really feels in Ðông Hà
Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Ðông Hà weather by month
How September compares with the rest of the year at a glance. September is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 23° / 18° | 135 | 18.2 | 11.1 | 5.3 |
| Feb | 25° / 19° | 84 | 13.5 | 11.4 | 5.9 |
| Mar | 27° / 21° | 88 | 13.6 | 11.9 | 5.7 |
| Apr | 30° / 23° | 89 | 14.2 | 12.4 | 4.3 |
| May | 33° / 25° | 134 | 18.6 | 12.8 | 2.9 |
| Jun | 34° / 26° | 71 | 10.8 | 13 | 2.7 |
| Jul | 34° / 26° | 99 | 12.3 | 12.9 | 2.8 |
| Aug | 33° / 26° | 128 | 14.8 | 12.6 | 3.0 |
| Sep | 31° / 25° | 298 | 20.3 | 12.1 | 3.2 |
| Oct | 28° / 23° | 449 | 24.2 | 11.6 | 4.0 |
| Nov | 26° / 21° | 400 | 22.4 | 11.2 | 4.6 |
| Dec | 23° / 19° | 293 | 22.3 | 11 | 4.7 |
Cloud cover in September
The sky is clear or mostly clear about 10% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 79%. Skies tend to open up as the month goes on.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 17 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 16 | 17 | 17 | 18 | 18 | 19 | 20 | 20 | 22 | 23 | 24 | 24 | 24 | 25 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 26 |
| Cloudier (%) | 83 | 84 | 84 | 85 | 85 | 85 | 85 | 85 | 84 | 83 | 83 | 82 | 82 | 81 | 80 | 80 | 78 | 77 | 76 | 76 | 76 | 75 | 74 | 74 | 74 | 74 | 73 | 73 | 74 | 74 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 17 | 83 |
| 2 | 16 | 84 |
| 3 | 16 | 84 |
| 4 | 15 | 85 |
| 5 | 15 | 85 |
| 6 | 15 | 85 |
| 7 | 15 | 85 |
| 8 | 15 | 85 |
| 9 | 16 | 84 |
| 10 | 17 | 83 |
| 11 | 17 | 83 |
| 12 | 18 | 82 |
| 13 | 18 | 82 |
| 14 | 19 | 81 |
| 15 | 20 | 80 |
| 16 | 20 | 80 |
| 17 | 22 | 78 |
| 18 | 23 | 77 |
| 19 | 24 | 76 |
| 20 | 24 | 76 |
| 21 | 24 | 76 |
| 22 | 25 | 75 |
| 23 | 26 | 74 |
| 24 | 26 | 74 |
| 25 | 26 | 74 |
| 26 | 26 | 74 |
| 27 | 27 | 73 |
| 28 | 27 | 73 |
| 29 | 26 | 74 |
| 30 | 26 | 74 |
Chance of precipitation in September
Ðông Hà gets around 298 mm of rain over 20.3 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 68% and peaks near 78% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 59 | 59 | 60 | 60 | 60 | 61 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 68 | 69 | 70 | 70 | 71 | 72 | 72 | 73 | 74 | 75 | 75 | 76 | 77 | 77 | 78 | 78 |
| Rain chance (%) | |
|---|---|
| 1 | 59 |
| 2 | 59 |
| 3 | 60 |
| 4 | 60 |
| 5 | 60 |
| 6 | 61 |
| 7 | 61 |
| 8 | 62 |
| 9 | 63 |
| 10 | 64 |
| 11 | 65 |
| 12 | 66 |
| 13 | 67 |
| 14 | 68 |
| 15 | 68 |
| 16 | 69 |
| 17 | 70 |
| 18 | 70 |
| 19 | 71 |
| 20 | 72 |
| 21 | 72 |
| 22 | 73 |
| 23 | 74 |
| 24 | 75 |
| 25 | 75 |
| 26 | 76 |
| 27 | 77 |
| 28 | 77 |
| 29 | 78 |
| 30 | 78 |
Humidity in September
Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the oppressive band about 62% of days. Sticky, muggy-or-worse air turns up on roughly 100% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 3 |
| Oppressive (%) | 72 | 71 | 71 | 70 | 70 | 69 | 68 | 66 | 65 | 64 | 63 | 62 | 61 | 60 | 59 | 58 | 58 | 58 | 58 | 58 | 58 | 59 | 59 | 59 | 59 | 60 | 60 | 61 | 62 | 61 |
| Miserable (%) | 28 | 29 | 29 | 30 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 41 | 41 | 41 | 41 | 41 | 40 | 40 | 39 | 39 | 38 | 38 | 37 | 36 | 36 |
| Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|
| 1 | 0 | 72 | 28 |
| 2 | 0 | 71 | 29 |
| 3 | 0 | 71 | 29 |
| 4 | 0 | 70 | 30 |
| 5 | 0 | 70 | 30 |
| 6 | 0 | 69 | 31 |
| 7 | 0 | 68 | 32 |
| 8 | 1 | 66 | 33 |
| 9 | 1 | 65 | 34 |
| 10 | 1 | 64 | 35 |
| 11 | 1 | 63 | 36 |
| 12 | 1 | 62 | 37 |
| 13 | 1 | 61 | 38 |
| 14 | 1 | 60 | 39 |
| 15 | 1 | 59 | 40 |
| 16 | 1 | 58 | 41 |
| 17 | 1 | 58 | 41 |
| 18 | 1 | 58 | 41 |
| 19 | 1 | 58 | 41 |
| 20 | 1 | 58 | 41 |
| 21 | 1 | 58 | 41 |
| 22 | 1 | 59 | 40 |
| 23 | 1 | 59 | 40 |
| 24 | 2 | 59 | 39 |
| 25 | 2 | 59 | 39 |
| 26 | 2 | 60 | 38 |
| 27 | 2 | 60 | 38 |
| 28 | 2 | 61 | 37 |
| 29 | 2 | 62 | 36 |
| 30 | 3 | 61 | 36 |
Wind in September
Winds average 8 km/h in September.
Across September, daily wind ranges from about 7 km/h on the calmest days to 10 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 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 |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 10 | calm |
| 2 | 9 | calm |
| 3 | 9 | calm |
| 4 | 9 | calm |
| 5 | 9 | calm |
| 6 | 9 | calm |
| 7 | 9 | calm |
| 8 | 9 | calm |
| 9 | 9 | calm |
| 10 | 8 | calm |
| 11 | 8 | calm |
| 12 | 8 | calm |
| 13 | 8 | calm |
| 14 | 8 | calm |
| 15 | 8 | calm |
| 16 | 8 | calm |
| 17 | 8 | calm |
| 18 | 8 | calm |
| 19 | 8 | 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 |
Sunrise & sunset in September
Daylight runs from about 12 h 18 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 24 minutes over September. Sunrise moves from 5:41 AM to 5:45 AM, and sunset from 6:01 PM to 5:37 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 |
| Sunrise (AM) | 5:41 | 5:41 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:42 | 5:43 | 5:43 | 5:43 | 5:43 | 5:43 | 5:43 | 5:43 | 5:43 | 5:43 | 5:44 | 5:44 | 5:44 | 5:44 | 5:44 | 5:44 | 5:44 | 5:44 | 5:45 | 5:45 | 5:45 |
| Sunset (PM) | 6:01 | 6:00 | 6:00 | 5:59 | 5:58 | 5:57 | 5:56 | 5:56 | 5:55 | 5:54 | 5:53 | 5:52 | 5:51 | 5:50 | 5:50 | 5:49 | 5:48 | 5:47 | 5:46 | 5:45 | 5:44 | 5:44 | 5:43 | 5:42 | 5:41 | 5:40 | 5:39 | 5:39 | 5:38 | 5:37 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.3 | 5:41 | 6:01 |
| 2 | 12.3 | 5:41 | 6:00 |
| 3 | 12.3 | 5:42 | 6:00 |
| 4 | 12.3 | 5:42 | 5:59 |
| 5 | 12.3 | 5:42 | 5:58 |
| 6 | 12.3 | 5:42 | 5:57 |
| 7 | 12.2 | 5:42 | 5:56 |
| 8 | 12.2 | 5:42 | 5:56 |
| 9 | 12.2 | 5:42 | 5:55 |
| 10 | 12.2 | 5:42 | 5:54 |
| 11 | 12.2 | 5:43 | 5:53 |
| 12 | 12.2 | 5:43 | 5:52 |
| 13 | 12.1 | 5:43 | 5:51 |
| 14 | 12.1 | 5:43 | 5:50 |
| 15 | 12.1 | 5:43 | 5:50 |
| 16 | 12.1 | 5:43 | 5:49 |
| 17 | 12.1 | 5:43 | 5:48 |
| 18 | 12.1 | 5:43 | 5:47 |
| 19 | 12.0 | 5:43 | 5:46 |
| 20 | 12.0 | 5:44 | 5:45 |
| 21 | 12.0 | 5:44 | 5:44 |
| 22 | 12.0 | 5:44 | 5:44 |
| 23 | 12.0 | 5:44 | 5:43 |
| 24 | 12.0 | 5:44 | 5:42 |
| 25 | 11.9 | 5:44 | 5:41 |
| 26 | 11.9 | 5:44 | 5:40 |
| 27 | 11.9 | 5:44 | 5:39 |
| 28 | 11.9 | 5:45 | 5:39 |
| 29 | 11.9 | 5:45 | 5:38 |
| 30 | 11.9 | 5:45 | 5:37 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.53 kWh/m².
For context, solar energy here swings from a low near 2.33 kWh/m² to a high of 5.79 kWh/m² in June across the year — September's 4.53 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.0 | 5.0 | 4.9 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.4 | 4.3 | 4.3 | 4.3 | 4.3 | 4.2 | 4.2 | 4.2 | 4.1 | 4.1 | 4.1 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.0 | Bright |
| 2 | 5.0 | Bright |
| 3 | 4.9 | Bright |
| 4 | 4.9 | Bright |
| 5 | 4.9 | Bright |
| 6 | 4.8 | Bright |
| 7 | 4.8 | Bright |
| 8 | 4.8 | Bright |
| 9 | 4.7 | Bright |
| 10 | 4.7 | Bright |
| 11 | 4.7 | Bright |
| 12 | 4.6 | Bright |
| 13 | 4.6 | Bright |
| 14 | 4.5 | Bright |
| 15 | 4.5 | Bright |
| 16 | 4.5 | Bright |
| 17 | 4.5 | Bright |
| 18 | 4.4 | Bright |
| 19 | 4.4 | Bright |
| 20 | 4.4 | Bright |
| 21 | 4.3 | Bright |
| 22 | 4.3 | Bright |
| 23 | 4.3 | Bright |
| 24 | 4.3 | Bright |
| 25 | 4.2 | Bright |
| 26 | 4.2 | Bright |
| 27 | 4.2 | Bright |
| 28 | 4.1 | Bright |
| 29 | 4.1 | Bright |
| 30 | 4.1 | Bright |
Hazard calendar for Ðông Hà
In September, Ðông Hà sits inside its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.
Ðông Hà sits in the Pacific typhoon belt; the season peaks July–October.
Ðông Hà's monsoon runs September–December, when most of the year's rain falls.
Is September a good time to visit Ðông Hà?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a weaker month for outdoor sightseeing in Ðông Hà.
What to pack for Ðông Hà in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Ðông Hà sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.
Sea temperature near Ðông Hà in September
The nearest coast averages about 29°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 30 km away) is warmest in August at about 29°C and coldest in February near 22°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) | 23 | 22 | 23 | 25 | 28 | 29 | 29 | 29 | 29 | 28 | 26 | 24 |
| Comfort | Refreshing | Refreshing | Refreshing | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 23 | Refreshing |
| Feb | 22 | Refreshing |
| Mar | 23 | Refreshing |
| Apr | 25 | Warm |
| May | 28 | Warm |
| Jun | 29 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 28 | Tropical |
| Nov | 26 | Warm |
| Dec | 24 | Warm |
UV index in Ðông Hà in September
Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Ðông Hà peaks around August 13 at about 13 (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) | 9 | 10 | 9 | 10 | 11 | 12 | 13 | 14 | 12 | 10 | 8 | 6 |
| Level | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 10 | Very high |
| Mar | 9 | Very high |
| Apr | 10 | Very high |
| May | 11 | Extreme |
| Jun | 12 | Extreme |
| Jul | 13 | Extreme |
| Aug | 14 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 6 | High |
Air quality in Ðông Hà in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in Ðông Hà is worst in March — around 76 µg/m³ PM2.5 (unhealthy), about 5.1× the cleanest month (July, 15 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) | 21 | 27 | 76 | 66 | 26 | 17 | 15 | 16 | 19 | 21 | 18 | 21 |
| Level | Moderate | Moderate | Unhealthy | Unhealthy | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 21 | Moderate |
| Feb | 27 | Moderate |
| Mar | 76 | Unhealthy |
| Apr | 66 | Unhealthy |
| May | 26 | Moderate |
| Jun | 17 | Moderate |
| Jul | 15 | Moderate |
| Aug | 16 | Moderate |
| Sep | 19 | Moderate |
| Oct | 21 | Moderate |
| Nov | 18 | Moderate |
| Dec | 21 | Moderate |
Where is Ðông Hà?
Ðông Hà sits at 16.8°N, 107.1°E, 21 m above sea level, in Vietnam. The nearest listed city is Cam Lộ, 11 km away.
Topography around Ðông Hà
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ðông Hà.
Within 3 km, the terrain around Ðông Hà has only modest variations in elevation — a maximum elevation change of 44 m around an average of 10 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 204 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,059 m.
The land around Ðông Hà is covered by artificial surfaces (38%), cropland (24%) and trees (21%) within 3 km, trees (52%) and cropland (22%) within 16 km, and trees (60%) and water (29%) 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 Ðông Hà (16.8163°, 107.1003°, elevation 21 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). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).