Đồng Hới weather in March
In March, Đồng Hới sees average daytime highs of 25°C and overnight lows near 21°C, with 82 mm of rain across 13.3 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 10th-wettest month of the year here.
Highs climb over the month, from about 24°C in the first days to 26°C by the end. The sky is clear or mostly clear about 23% of the time in March, and the air most often feels oppressive.
Daylight stretches from about 11 h 36 min at the start of March to 12 h 06 min by month's end. Set against the rest of the year, March is Đồng Hới's 2nd-clearest and 10th-windiest month. For the whole year in context, see Đồng Hới's year-round climate.
- Daytime high
- 25°
- 8th warmest
- Overnight low
- 21°
- 4th coldest
- Rainfall
- 82 mm
- 13.3 wet days
- Daylight
- 11 h 54 min
- 6:07 AM – 5:59 PM
- Cloud cover
- 65%
- 2nd clearest
- Wind
- 10 km/h
- 10th windiest
- Solar energy
- 4.54 kWh/m²
- Travel score
- 6.2
- out of 10
Đồng Hới is capital of Quảng Bình province, Vietnam.
- Density
- 859/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in March
Highs climb over the month, from about 24°C in the first days to 26°C by the end.
A typical March day in Đồng Hới reaches about 25°C in the afternoon and slips back to 21°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 29°C. Set against its neighbours, March runs about 3°C warmer than February and about 3°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 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg low (°C) | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 23 | 19 |
| 2 | 23 | 19 |
| 3 | 24 | 19 |
| 4 | 24 | 20 |
| 5 | 24 | 20 |
| 6 | 24 | 20 |
| 7 | 24 | 20 |
| 8 | 24 | 20 |
| 9 | 24 | 20 |
| 10 | 24 | 20 |
| 11 | 24 | 20 |
| 12 | 25 | 20 |
| 13 | 25 | 20 |
| 14 | 25 | 20 |
| 15 | 25 | 20 |
| 16 | 25 | 21 |
| 17 | 25 | 21 |
| 18 | 25 | 21 |
| 19 | 25 | 21 |
| 20 | 25 | 21 |
| 21 | 25 | 21 |
| 22 | 25 | 21 |
| 23 | 25 | 21 |
| 24 | 26 | 21 |
| 25 | 26 | 21 |
| 26 | 26 | 21 |
| 27 | 26 | 21 |
| 28 | 26 | 21 |
| 29 | 26 | 22 |
| 30 | 26 | 22 |
| 31 | 26 | 22 |
How March really feels in Đồng Hới
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.
Đồng Hới weather by month
How March compares with the rest of the year at a glance. March is the 8th-warmest and 10th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 21° / 18° | 125 | 17.4 | 11.1 | 5.2 |
| Feb | 22° / 18° | 77 | 13.8 | 11.4 | 5.8 |
| Mar | 25° / 21° | 82 | 13.3 | 11.9 | 6.2 |
| Apr | 28° / 23° | 88 | 12.8 | 12.4 | 5.6 |
| May | 30° / 26° | 112 | 14.7 | 12.8 | 4.2 |
| Jun | 32° / 27° | 63 | 8.1 | 13 | 3.9 |
| Jul | 32° / 27° | 94 | 10 | 12.9 | 3.9 |
| Aug | 31° / 26° | 146 | 13.5 | 12.6 | 3.9 |
| Sep | 29° / 25° | 345 | 19.6 | 12.1 | 3.9 |
| Oct | 27° / 24° | 531 | 24 | 11.6 | 4.5 |
| Nov | 25° / 21° | 366 | 20.9 | 11.2 | 4.9 |
| Dec | 22° / 19° | 228 | 20.3 | 11 | 4.8 |
Cloud cover in March
The sky is clear or mostly clear about 23% of the time in March.
Beyond those clear spells, partly cloudy skies cover about 18% of March, with mostly cloudy or overcast conditions the remaining 60%.
| 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 (%) | 36 | 36 | 37 | 37 | 37 | 39 | 39 | 39 | 40 | 41 | 41 | 41 | 41 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 41 | 42 | 42 | 40 | 40 | 40 | 40 | 41 |
| Cloudier (%) | 64 | 64 | 63 | 63 | 63 | 61 | 61 | 61 | 60 | 59 | 59 | 59 | 59 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 59 | 58 | 58 | 60 | 60 | 60 | 60 | 59 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 36 | 64 |
| 2 | 36 | 64 |
| 3 | 37 | 63 |
| 4 | 37 | 63 |
| 5 | 37 | 63 |
| 6 | 39 | 61 |
| 7 | 39 | 61 |
| 8 | 39 | 61 |
| 9 | 40 | 60 |
| 10 | 41 | 59 |
| 11 | 41 | 59 |
| 12 | 41 | 59 |
| 13 | 41 | 59 |
| 14 | 42 | 58 |
| 15 | 42 | 58 |
| 16 | 42 | 58 |
| 17 | 42 | 58 |
| 18 | 42 | 58 |
| 19 | 42 | 58 |
| 20 | 42 | 58 |
| 21 | 42 | 58 |
| 22 | 42 | 58 |
| 23 | 42 | 58 |
| 24 | 41 | 59 |
| 25 | 42 | 58 |
| 26 | 42 | 58 |
| 27 | 40 | 60 |
| 28 | 40 | 60 |
| 29 | 40 | 60 |
| 30 | 40 | 60 |
| 31 | 41 | 59 |
Chance of precipitation in March
Đồng Hới gets around 82 mm of rain over 13.3 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 43% and peaks near 46% on the wettest days.
| 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 (%) | 43 | 42 | 42 | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 40 | 41 | 41 | 41 | 42 | 43 | 43 | 44 | 44 | 45 | 45 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 45 |
| Rain chance (%) | |
|---|---|
| 1 | 43 |
| 2 | 42 |
| 3 | 42 |
| 4 | 41 |
| 5 | 41 |
| 6 | 41 |
| 7 | 40 |
| 8 | 40 |
| 9 | 40 |
| 10 | 40 |
| 11 | 40 |
| 12 | 41 |
| 13 | 41 |
| 14 | 41 |
| 15 | 42 |
| 16 | 43 |
| 17 | 43 |
| 18 | 44 |
| 19 | 44 |
| 20 | 45 |
| 21 | 45 |
| 22 | 46 |
| 23 | 46 |
| 24 | 46 |
| 25 | 46 |
| 26 | 46 |
| 27 | 46 |
| 28 | 46 |
| 29 | 46 |
| 30 | 46 |
| 31 | 45 |
Humidity in March
Most of March feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, March lands in the oppressive band about 48% of days. Sticky, muggy-or-worse air turns up on roughly 80% 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 (%) | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Comfortable (%) | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 |
| Humid (%) | 19 | 20 | 20 | 20 | 19 | 19 | 19 | 18 | 17 | 17 | 16 | 15 | 15 | 14 | 14 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 |
| Muggy (%) | 38 | 37 | 37 | 37 | 37 | 36 | 36 | 36 | 35 | 35 | 34 | 34 | 33 | 32 | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 22 | 21 | 21 | 20 | 20 | 20 | 20 |
| Oppressive (%) | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 37 | 39 | 40 | 42 | 44 | 46 | 48 | 50 | 51 | 53 | 53 | 55 | 56 | 56 | 58 | 60 | 60 | 60 | 60 | 60 | 60 | 62 | 61 | 61 |
| Miserable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 3 | 11 | 19 | 38 | 29 | 0 |
| 2 | 3 | 10 | 20 | 37 | 30 | 0 |
| 3 | 2 | 10 | 20 | 37 | 31 | 0 |
| 4 | 2 | 9 | 20 | 37 | 32 | 0 |
| 5 | 2 | 9 | 19 | 37 | 33 | 0 |
| 6 | 2 | 8 | 19 | 36 | 34 | 0 |
| 7 | 2 | 8 | 19 | 36 | 35 | 0 |
| 8 | 2 | 7 | 18 | 36 | 37 | 0 |
| 9 | 1 | 7 | 17 | 35 | 39 | 0 |
| 10 | 1 | 6 | 17 | 35 | 40 | 0 |
| 11 | 1 | 6 | 16 | 34 | 42 | 0 |
| 12 | 1 | 5 | 15 | 34 | 44 | 0 |
| 13 | 1 | 5 | 15 | 33 | 46 | 0 |
| 14 | 1 | 4 | 14 | 32 | 48 | 1 |
| 15 | 1 | 4 | 14 | 31 | 50 | 1 |
| 16 | 1 | 4 | 13 | 30 | 51 | 1 |
| 17 | 1 | 4 | 12 | 29 | 53 | 1 |
| 18 | 1 | 4 | 12 | 28 | 53 | 2 |
| 19 | 1 | 4 | 11 | 27 | 55 | 2 |
| 20 | 1 | 4 | 11 | 26 | 56 | 2 |
| 21 | 1 | 4 | 11 | 25 | 56 | 3 |
| 22 | 0 | 4 | 11 | 24 | 58 | 3 |
| 23 | 0 | 4 | 10 | 23 | 60 | 3 |
| 24 | 0 | 4 | 10 | 22 | 60 | 4 |
| 25 | 0 | 4 | 10 | 22 | 60 | 4 |
| 26 | 0 | 4 | 10 | 21 | 60 | 5 |
| 27 | 0 | 4 | 10 | 21 | 60 | 5 |
| 28 | 0 | 4 | 10 | 20 | 60 | 6 |
| 29 | 0 | 3 | 9 | 20 | 62 | 6 |
| 30 | 0 | 3 | 9 | 20 | 61 | 7 |
| 31 | 0 | 3 | 9 | 20 | 61 | 7 |
Wind in March
Winds average 10 km/h in March.
Across March, daily wind ranges from about 10 km/h on the calmest days to 11 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) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| 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 | 11 | calm |
| 2 | 11 | calm |
| 3 | 11 | calm |
| 4 | 11 | calm |
| 5 | 11 | calm |
| 6 | 11 | calm |
| 7 | 11 | calm |
| 8 | 11 | calm |
| 9 | 11 | calm |
| 10 | 11 | calm |
| 11 | 11 | calm |
| 12 | 11 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 10 | calm |
| 16 | 10 | calm |
| 17 | 10 | calm |
| 18 | 10 | calm |
| 19 | 10 | calm |
| 20 | 10 | calm |
| 21 | 10 | calm |
| 22 | 10 | calm |
| 23 | 10 | calm |
| 24 | 10 | calm |
| 25 | 10 | calm |
| 26 | 10 | calm |
| 27 | 10 | calm |
| 28 | 10 | calm |
| 29 | 10 | calm |
| 30 | 10 | calm |
| 31 | 10 | calm |
Sunrise & sunset in March
Daylight runs from about 11 h 36 min at the start of March to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 30 minutes over March. Sunrise moves from 6:18 AM to 5:55 AM, and sunset from 5:56 PM to 6:02 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) | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 |
| Sunrise (AM) | 6:18 | 6:17 | 6:17 | 6:16 | 6:15 | 6:14 | 6:14 | 6:13 | 6:12 | 6:11 | 6:11 | 6:10 | 6:09 | 6:08 | 6:08 | 6:07 | 6:06 | 6:05 | 6:04 | 6:04 | 6:03 | 6:02 | 6:01 | 6:00 | 6:00 | 5:59 | 5:58 | 5:57 | 5:56 | 5:55 | 5:55 |
| Sunset (PM) | 5:56 | 5:56 | 5:56 | 5:57 | 5:57 | 5:57 | 5:57 | 5:58 | 5:58 | 5:58 | 5:58 | 5:59 | 5:59 | 5:59 | 5:59 | 5:59 | 6:00 | 6:00 | 6:00 | 6:00 | 6:01 | 6:01 | 6:01 | 6:01 | 6:01 | 6:01 | 6:02 | 6:02 | 6:02 | 6:02 | 6:02 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.6 | 6:18 | 5:56 |
| 2 | 11.6 | 6:17 | 5:56 |
| 3 | 11.7 | 6:17 | 5:56 |
| 4 | 11.7 | 6:16 | 5:57 |
| 5 | 11.7 | 6:15 | 5:57 |
| 6 | 11.7 | 6:14 | 5:57 |
| 7 | 11.7 | 6:14 | 5:57 |
| 8 | 11.7 | 6:13 | 5:58 |
| 9 | 11.8 | 6:12 | 5:58 |
| 10 | 11.8 | 6:11 | 5:58 |
| 11 | 11.8 | 6:11 | 5:58 |
| 12 | 11.8 | 6:10 | 5:59 |
| 13 | 11.8 | 6:09 | 5:59 |
| 14 | 11.8 | 6:08 | 5:59 |
| 15 | 11.9 | 6:08 | 5:59 |
| 16 | 11.9 | 6:07 | 5:59 |
| 17 | 11.9 | 6:06 | 6:00 |
| 18 | 11.9 | 6:05 | 6:00 |
| 19 | 11.9 | 6:04 | 6:00 |
| 20 | 11.9 | 6:04 | 6:00 |
| 21 | 12.0 | 6:03 | 6:01 |
| 22 | 12.0 | 6:02 | 6:01 |
| 23 | 12.0 | 6:01 | 6:01 |
| 24 | 12.0 | 6:00 | 6:01 |
| 25 | 12.0 | 6:00 | 6:01 |
| 26 | 12.0 | 5:59 | 6:01 |
| 27 | 12.1 | 5:58 | 6:02 |
| 28 | 12.1 | 5:57 | 6:02 |
| 29 | 12.1 | 5:56 | 6:02 |
| 30 | 12.1 | 5:55 | 6:02 |
| 31 | 12.1 | 5:55 | 6:02 |
Solar energy in March
Average shortwave solar energy reaching the ground each day in March, about 4.54 kWh/m².
For context, solar energy here swings from a low near 2.38 kWh/m² to a high of 5.68 kWh/m² in May across the year — March's 4.54 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) | 4.0 | 4.1 | 4.1 | 4.2 | 4.2 | 4.3 | 4.3 | 4.3 | 4.4 | 4.4 | 4.5 | 4.5 | 4.5 | 4.5 | 4.6 | 4.6 | 4.6 | 4.6 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 |
| 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 | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.0 | Bright |
| 2 | 4.1 | Bright |
| 3 | 4.1 | Bright |
| 4 | 4.2 | Bright |
| 5 | 4.2 | Bright |
| 6 | 4.3 | Bright |
| 7 | 4.3 | Bright |
| 8 | 4.3 | Bright |
| 9 | 4.4 | Bright |
| 10 | 4.4 | Bright |
| 11 | 4.5 | Bright |
| 12 | 4.5 | Bright |
| 13 | 4.5 | Bright |
| 14 | 4.5 | Bright |
| 15 | 4.6 | Bright |
| 16 | 4.6 | Bright |
| 17 | 4.6 | Bright |
| 18 | 4.6 | Bright |
| 19 | 4.7 | Bright |
| 20 | 4.7 | Bright |
| 21 | 4.7 | Bright |
| 22 | 4.7 | Bright |
| 23 | 4.7 | Bright |
| 24 | 4.7 | Bright |
| 25 | 4.7 | Bright |
| 26 | 4.8 | Bright |
| 27 | 4.8 | Bright |
| 28 | 4.8 | Bright |
| 29 | 4.8 | Bright |
| 30 | 4.9 | Bright |
| 31 | 4.9 | Bright |
Hazard calendar for Đồng Hới
In March, Đồng Hới sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Đồng Hới sits in the Pacific typhoon belt; the season peaks July–October.
Đồng Hới's monsoon runs September–November, when most of the year's rain falls.
Is March a good time to visit Đồng Hới?
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 Đồng Hới for sightseeing.
What to pack for Đồng Hới in March
From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In March, Đồng Hới sees daytime highs around 25°C and nights near 21°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.
Sea temperature near Đồng Hới in March
The nearest coast averages about 23°C in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 17 km away) is warmest in August at about 30°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) | 22 | 22 | 23 | 25 | 28 | 29 | 29 | 30 | 29 | 28 | 26 | 24 |
| Comfort | Refreshing | Refreshing | Refreshing | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 22 | Refreshing |
| Feb | 22 | Refreshing |
| Mar | 23 | Refreshing |
| Apr | 25 | Warm |
| May | 28 | Warm |
| Jun | 29 | Tropical |
| Jul | 29 | Tropical |
| Aug | 30 | Tropical |
| Sep | 29 | Tropical |
| Oct | 28 | Warm |
| Nov | 26 | Warm |
| Dec | 24 | Refreshing |
UV index in Đồng Hới 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 Đồng Hới peaks around August 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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) | 8 | 10 | 9 | 9 | 12 | 12 | 13 | 13 | 11 | 10 | 8 | 6 |
| Level | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Very high |
| Mar | 9 | Very high |
| Apr | 9 | Very high |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 13 | Extreme |
| Aug | 13 | Extreme |
| Sep | 11 | Extreme |
| Oct | 10 | Very high |
| Nov | 8 | Very high |
| Dec | 6 | High |
Air quality in Đồng Hới 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 Đồng Hới is worst in April — around 65 µg/m³ PM2.5 (unhealthy), about 4.9× the cleanest month (July, 13 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) | 20 | 26 | 62 | 65 | 21 | 14 | 13 | 14 | 16 | 20 | 18 | 21 |
| Level | Moderate | Moderate | Unhealthy | Unhealthy | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 20 | Moderate |
| Feb | 26 | Moderate |
| Mar | 62 | Unhealthy |
| Apr | 65 | Unhealthy |
| May | 21 | Moderate |
| Jun | 14 | Moderate |
| Jul | 13 | Moderate |
| Aug | 14 | Moderate |
| Sep | 16 | Moderate |
| Oct | 20 | Moderate |
| Nov | 18 | Moderate |
| Dec | 21 | Moderate |
Where is Đồng Hới?
Đồng Hới sits at 17.5°N, 106.6°E, 9 m above sea level, in Vietnam. The nearest listed city is Quán Hàu, 7.0 km away.
Topography around Đồng Hới
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Đồng Hới.
Within 3 km, the terrain around Đồng Hới has only modest variations in elevation — a maximum elevation change of 22 m around an average of 4 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 711 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,630 m.
The land around Đồng Hới is covered by artificial surfaces (38%) and water (29%) within 3 km, water (45%) and trees (29%) within 16 km, and trees (61%) and water (32%) 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 Đồng Hới (17.4688°, 106.6223°, elevation 9 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).