Diễn Thành weather in April
In April, Diễn Thành sees average daytime highs of 30°C and overnight lows near 23°C, with 49 mm of rain across 6.9 wet days and about 12.4 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.
Highs climb over the month, from about 28°C in the first days to 31°C by the end. The sky is clear or mostly clear about 23% of the time in April, and the air most often feels oppressive.
Daylight stretches from about 12 h 12 min at the start of April to 12 h 42 min by month's end. Set against the rest of the year, April is Diễn Thành's 3rd-clearest and 9th-windiest month. For the whole year in context, see Diễn Thành's year-round climate.
- Daytime high
- 30°
- 6th warmest
- Overnight low
- 23°
- 6th coldest
- Rainfall
- 49 mm
- 6.9 wet days
- Daylight
- 12 h 24 min
- 5:45 AM – 6:11 PM
- Cloud cover
- 66%
- 3rd clearest
- Wind
- 8 km/h
- 9th windiest
- Solar energy
- 5.04 kWh/m²
- Travel score
- 5.3
- out of 10
Temperature in April
Highs climb over the month, from about 28°C in the first days to 31°C by the end.
A typical April day in Diễn Thành reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 35°C. Set against its neighbours, April runs about 4°C warmer than March and about 3°C cooler than May.
| 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) | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 32 |
| Avg low (°C) | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 28 | 21 |
| 2 | 28 | 21 |
| 3 | 28 | 21 |
| 4 | 28 | 21 |
| 5 | 28 | 22 |
| 6 | 28 | 22 |
| 7 | 29 | 22 |
| 8 | 29 | 22 |
| 9 | 29 | 22 |
| 10 | 29 | 22 |
| 11 | 29 | 22 |
| 12 | 29 | 22 |
| 13 | 30 | 22 |
| 14 | 30 | 23 |
| 15 | 30 | 23 |
| 16 | 30 | 23 |
| 17 | 30 | 23 |
| 18 | 30 | 23 |
| 19 | 30 | 23 |
| 20 | 31 | 23 |
| 21 | 31 | 23 |
| 22 | 31 | 23 |
| 23 | 31 | 24 |
| 24 | 31 | 24 |
| 25 | 31 | 24 |
| 26 | 31 | 24 |
| 27 | 31 | 24 |
| 28 | 31 | 24 |
| 29 | 32 | 24 |
| 30 | 32 | 24 |
How April really feels in Diễn Thành
Once humidity and wind are folded in, April averages 20 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 April is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Diễn Thành weather by month
How April compares with the rest of the year at a glance. April is the 6th-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 | 21° / 16° | 17 | 3.9 | 11 | 7.0 |
| Feb | 23° / 17° | 13 | 3.3 | 11.4 | 7.4 |
| Mar | 26° / 19° | 31 | 5.3 | 11.9 | 7.2 |
| Apr | 30° / 23° | 49 | 6.9 | 12.4 | 5.3 |
| May | 33° / 26° | 115 | 14 | 12.9 | 3.1 |
| Jun | 35° / 28° | 116 | 12 | 13.1 | 2.1 |
| Jul | 34° / 28° | 171 | 14.2 | 13 | 2.3 |
| Aug | 33° / 27° | 259 | 20.5 | 12.6 | 2.6 |
| Sep | 31° / 25° | 293 | 19.9 | 12.1 | 3.2 |
| Oct | 29° / 23° | 238 | 17.5 | 11.6 | 4.8 |
| Nov | 26° / 20° | 62 | 9.1 | 11.1 | 6.7 |
| Dec | 22° / 17° | 26 | 5.1 | 10.9 | 7.2 |
Cloud cover in April
The sky is clear or mostly clear about 23% of the time in April.
Beyond those clear spells, partly cloudy skies cover about 14% of April, with mostly cloudy or overcast conditions the remaining 63%.
| 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 (%) | 31 | 32 | 33 | 34 | 33 | 35 | 35 | 36 | 36 | 36 | 37 | 37 | 38 | 39 | 40 | 39 | 40 | 39 | 39 | 39 | 39 | 38 | 38 | 38 | 39 | 38 | 38 | 38 | 38 | 36 |
| Cloudier (%) | 69 | 68 | 67 | 66 | 67 | 65 | 65 | 64 | 64 | 64 | 63 | 63 | 62 | 61 | 60 | 61 | 60 | 61 | 61 | 61 | 61 | 62 | 62 | 62 | 61 | 62 | 62 | 62 | 62 | 64 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 31 | 69 |
| 2 | 32 | 68 |
| 3 | 33 | 67 |
| 4 | 34 | 66 |
| 5 | 33 | 67 |
| 6 | 35 | 65 |
| 7 | 35 | 65 |
| 8 | 36 | 64 |
| 9 | 36 | 64 |
| 10 | 36 | 64 |
| 11 | 37 | 63 |
| 12 | 37 | 63 |
| 13 | 38 | 62 |
| 14 | 39 | 61 |
| 15 | 40 | 60 |
| 16 | 39 | 61 |
| 17 | 40 | 60 |
| 18 | 39 | 61 |
| 19 | 39 | 61 |
| 20 | 39 | 61 |
| 21 | 39 | 61 |
| 22 | 38 | 62 |
| 23 | 38 | 62 |
| 24 | 38 | 62 |
| 25 | 39 | 61 |
| 26 | 38 | 62 |
| 27 | 38 | 62 |
| 28 | 38 | 62 |
| 29 | 38 | 62 |
| 30 | 36 | 64 |
Chance of precipitation in April
Diễn Thành gets around 49 mm of rain over 6.9 wet days in April. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 24% and peaks near 35% 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 (%) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 21 | 21 | 22 | 23 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 |
| Rain chance (%) | |
|---|---|
| 1 | 19 |
| 2 | 19 |
| 3 | 19 |
| 4 | 19 |
| 5 | 19 |
| 6 | 19 |
| 7 | 19 |
| 8 | 19 |
| 9 | 19 |
| 10 | 19 |
| 11 | 20 |
| 12 | 20 |
| 13 | 20 |
| 14 | 21 |
| 15 | 21 |
| 16 | 22 |
| 17 | 23 |
| 18 | 23 |
| 19 | 24 |
| 20 | 25 |
| 21 | 26 |
| 22 | 27 |
| 23 | 28 |
| 24 | 29 |
| 25 | 30 |
| 26 | 31 |
| 27 | 32 |
| 28 | 33 |
| 29 | 34 |
| 30 | 35 |
Humidity in April
Most of April feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, April lands in the oppressive band about 43% of days. Sticky, muggy-or-worse air turns up on roughly 89% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Comfortable (%) | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 |
| Muggy (%) | 25 | 25 | 25 | 24 | 23 | 23 | 22 | 22 | 21 | 20 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 11 | 10 | 10 | 10 | 9 | 9 | 9 | 9 |
| Oppressive (%) | 45 | 46 | 46 | 46 | 46 | 46 | 46 | 45 | 45 | 44 | 44 | 44 | 43 | 43 | 43 | 43 | 43 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 41 | 41 | 40 | 40 | 39 |
| Miserable (%) | 10 | 11 | 12 | 13 | 15 | 16 | 17 | 19 | 20 | 22 | 23 | 25 | 27 | 28 | 30 | 32 | 33 | 35 | 36 | 37 | 38 | 39 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 49 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 3 | 5 | 11 | 25 | 45 | 10 |
| 2 | 2 | 5 | 11 | 25 | 46 | 11 |
| 3 | 2 | 4 | 10 | 25 | 46 | 12 |
| 4 | 2 | 4 | 10 | 24 | 46 | 13 |
| 5 | 2 | 4 | 10 | 23 | 46 | 15 |
| 6 | 1 | 4 | 10 | 23 | 46 | 16 |
| 7 | 1 | 4 | 10 | 22 | 46 | 17 |
| 8 | 1 | 4 | 10 | 22 | 45 | 19 |
| 9 | 1 | 4 | 9 | 21 | 45 | 20 |
| 10 | 1 | 4 | 9 | 20 | 44 | 22 |
| 11 | 1 | 3 | 9 | 20 | 44 | 23 |
| 12 | 0 | 3 | 9 | 19 | 44 | 25 |
| 13 | 0 | 3 | 8 | 18 | 43 | 27 |
| 14 | 0 | 3 | 8 | 17 | 43 | 28 |
| 15 | 0 | 3 | 8 | 16 | 43 | 30 |
| 16 | 0 | 2 | 8 | 15 | 43 | 32 |
| 17 | 0 | 2 | 7 | 14 | 43 | 33 |
| 18 | 0 | 2 | 7 | 14 | 42 | 35 |
| 19 | 0 | 2 | 7 | 13 | 42 | 36 |
| 20 | 0 | 1 | 7 | 13 | 42 | 37 |
| 21 | 0 | 1 | 6 | 12 | 42 | 38 |
| 22 | 0 | 1 | 6 | 12 | 42 | 39 |
| 23 | 0 | 1 | 5 | 11 | 42 | 41 |
| 24 | 0 | 0 | 5 | 10 | 42 | 42 |
| 25 | 0 | 0 | 5 | 10 | 42 | 43 |
| 26 | 0 | 0 | 4 | 10 | 41 | 44 |
| 27 | 0 | 0 | 4 | 9 | 41 | 45 |
| 28 | 0 | 0 | 4 | 9 | 40 | 46 |
| 29 | 0 | 0 | 3 | 9 | 40 | 47 |
| 30 | 0 | 0 | 3 | 9 | 39 | 49 |
Wind in April
Winds average 8 km/h in April.
Across April, daily wind ranges from about 8 km/h on the calmest days to 8 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) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| 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 | 8 | calm |
| 2 | 8 | calm |
| 3 | 8 | calm |
| 4 | 8 | calm |
| 5 | 8 | calm |
| 6 | 8 | calm |
| 7 | 8 | calm |
| 8 | 8 | calm |
| 9 | 8 | 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 | 8 | calm |
| 21 | 8 | calm |
| 22 | 8 | calm |
| 23 | 8 | calm |
| 24 | 8 | calm |
| 25 | 8 | calm |
| 26 | 8 | calm |
| 27 | 8 | calm |
| 28 | 8 | calm |
| 29 | 8 | calm |
| 30 | 8 | calm |
Sunrise & sunset in April
Daylight runs from about 12 h 12 min at the start of April to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 30 minutes over April. Sunrise moves from 5:57 AM to 5:35 AM, and sunset from 6:07 PM to 6:15 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) | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.7 |
| Sunrise (AM) | 5:57 | 5:57 | 5:56 | 5:55 | 5:54 | 5:53 | 5:52 | 5:51 | 5:51 | 5:50 | 5:49 | 5:48 | 5:47 | 5:46 | 5:46 | 5:45 | 5:44 | 5:43 | 5:43 | 5:42 | 5:41 | 5:40 | 5:40 | 5:39 | 5:38 | 5:38 | 5:37 | 5:36 | 5:36 | 5:35 |
| Sunset (PM) | 6:07 | 6:07 | 6:08 | 6:08 | 6:08 | 6:08 | 6:09 | 6:09 | 6:09 | 6:09 | 6:09 | 6:10 | 6:10 | 6:10 | 6:10 | 6:11 | 6:11 | 6:11 | 6:12 | 6:12 | 6:12 | 6:12 | 6:13 | 6:13 | 6:13 | 6:14 | 6:14 | 6:14 | 6:15 | 6:15 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.2 | 5:57 | 6:07 |
| 2 | 12.2 | 5:57 | 6:07 |
| 3 | 12.2 | 5:56 | 6:08 |
| 4 | 12.2 | 5:55 | 6:08 |
| 5 | 12.2 | 5:54 | 6:08 |
| 6 | 12.3 | 5:53 | 6:08 |
| 7 | 12.3 | 5:52 | 6:09 |
| 8 | 12.3 | 5:51 | 6:09 |
| 9 | 12.3 | 5:51 | 6:09 |
| 10 | 12.3 | 5:50 | 6:09 |
| 11 | 12.3 | 5:49 | 6:09 |
| 12 | 12.4 | 5:48 | 6:10 |
| 13 | 12.4 | 5:47 | 6:10 |
| 14 | 12.4 | 5:46 | 6:10 |
| 15 | 12.4 | 5:46 | 6:10 |
| 16 | 12.4 | 5:45 | 6:11 |
| 17 | 12.4 | 5:44 | 6:11 |
| 18 | 12.5 | 5:43 | 6:11 |
| 19 | 12.5 | 5:43 | 6:12 |
| 20 | 12.5 | 5:42 | 6:12 |
| 21 | 12.5 | 5:41 | 6:12 |
| 22 | 12.5 | 5:40 | 6:12 |
| 23 | 12.6 | 5:40 | 6:13 |
| 24 | 12.6 | 5:39 | 6:13 |
| 25 | 12.6 | 5:38 | 6:13 |
| 26 | 12.6 | 5:38 | 6:14 |
| 27 | 12.6 | 5:37 | 6:14 |
| 28 | 12.6 | 5:36 | 6:14 |
| 29 | 12.6 | 5:36 | 6:15 |
| 30 | 12.7 | 5:35 | 6:15 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 5.04 kWh/m².
For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 5.73 kWh/m² in June across the year — April's 5.04 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) | 4.3 | 4.4 | 4.5 | 4.5 | 4.6 | 4.6 | 4.7 | 4.7 | 4.8 | 4.8 | 4.9 | 5.0 | 5.0 | 5.1 | 5.1 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 |
| 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 | 4.3 | Bright |
| 2 | 4.4 | Bright |
| 3 | 4.5 | Bright |
| 4 | 4.5 | Bright |
| 5 | 4.6 | Bright |
| 6 | 4.6 | Bright |
| 7 | 4.7 | Bright |
| 8 | 4.7 | Bright |
| 9 | 4.8 | Bright |
| 10 | 4.8 | Bright |
| 11 | 4.9 | Bright |
| 12 | 5.0 | Bright |
| 13 | 5.0 | Bright |
| 14 | 5.1 | Bright |
| 15 | 5.1 | Bright |
| 16 | 5.2 | Bright |
| 17 | 5.2 | Bright |
| 18 | 5.2 | Bright |
| 19 | 5.3 | Bright |
| 20 | 5.3 | Bright |
| 21 | 5.3 | Bright |
| 22 | 5.3 | Bright |
| 23 | 5.4 | Bright |
| 24 | 5.4 | Bright |
| 25 | 5.4 | Bright |
| 26 | 5.4 | Bright |
| 27 | 5.4 | Bright |
| 28 | 5.5 | Bright |
| 29 | 5.5 | Bright |
| 30 | 5.5 | Bright |
Hazard calendar for Diễn Thành
In April, Diễn Thành sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Diễn Thành sits in the Pacific typhoon belt; the season peaks July–October.
Diễn Thành's monsoon runs July–October, when most of the year's rain falls.
Is April a good time to visit Diễn Thành?
Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
April is a reasonable time to visit Diễn Thành for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Diễn Thành in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, Diễn Thành sees daytime highs around 30°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.
Sea temperature near Diễn Thành in April
The nearest coast averages about 24°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore 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 Diễn Thành in April
Clear-sky midday UV in April 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 Diễn Thành peaks around July 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 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 | 9 | 10 | 9 | 11 | 12 | 12 | 12 | 11 | 10 | 7 | 6 |
| Level | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 9 | Very high |
| Mar | 10 | Very high |
| Apr | 9 | Very high |
| May | 11 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 11 | Extreme |
| Oct | 10 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Air quality in Diễn Thành in April
Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.
Air quality in Diễn Thành is worst in April — around 62 µg/m³ PM2.5 (unhealthy), about 3.5× the cleanest month (July, 18 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) | 52 | 52 | 57 | 62 | 35 | 20 | 18 | 21 | 30 | 41 | 47 | 52 |
| Level | Poor | Poor | Unhealthy | Unhealthy | Poor | Moderate | Moderate | Moderate | Moderate | Poor | Poor | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 52 | Poor |
| Feb | 52 | Poor |
| Mar | 57 | Unhealthy |
| Apr | 62 | Unhealthy |
| May | 35 | Poor |
| Jun | 20 | Moderate |
| Jul | 18 | Moderate |
| Aug | 21 | Moderate |
| Sep | 30 | Moderate |
| Oct | 41 | Poor |
| Nov | 47 | Poor |
| Dec | 52 | Poor |
Where is Diễn Thành?
Diễn Thành sits at 19.0°N, 105.6°E, 9 m above sea level, in Vietnam. The nearest listed city is Kim Liên, 32 km away.
Topography around Diễn Thành
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Diễn Thành.
Within 3 km, the terrain around Diễn Thành has only modest variations in elevation — a maximum elevation change of 12 m around an average of 3 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 430 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,711 m.
The land around Diễn Thành is covered by cropland (44%) and artificial surfaces (21%) within 3 km, water (35%), cropland (33%) and trees (20%) within 16 km, and trees (54%) and water (28%) 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 Diễn Thành (18.9765°, 105.6003°, 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).