An Trạch weather in December
In December, An Trạch sees average daytime highs of 28°C and overnight lows near 25°C, with 108 mm of rain across 12.2 wet days and about 11.5 hours of daylight. It is the 10th-warmest and 8th-wettest month of the year here.
Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 16% of the time in December, and the air most often feels oppressive.
Daylight stretches from about 11 h 30 min at the start of December to 11 h 30 min by month's end. Set against the rest of the year, December is An Trạch's 6th-clearest and 3rd-windiest month. For the whole year in context, see An Trạch's year-round climate.
- Daytime high
- 28°
- 10th warmest
- Overnight low
- 25°
- 3rd coldest
- Rainfall
- 108 mm
- 12.2 wet days
- Daylight
- 11 h 30 min
- 6:10 AM – 5:39 PM
- Cloud cover
- 73%
- 6th clearest
- Wind
- 19 km/h
- 3rd windiest
- Solar energy
- 4.57 kWh/m²
- Travel score
- 5.9
- out of 10
Temperature in December
Day-to-day highs hold fairly steady near 28°C through the month.
A typical December day in An Trạch reaches about 28°C in the afternoon and slips back to 25°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, December runs on par with November and on par with January.
| 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) | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg low (°C) | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 28 | 26 |
| 2 | 28 | 26 |
| 3 | 28 | 26 |
| 4 | 28 | 26 |
| 5 | 28 | 25 |
| 6 | 28 | 25 |
| 7 | 28 | 25 |
| 8 | 28 | 25 |
| 9 | 28 | 25 |
| 10 | 28 | 25 |
| 11 | 28 | 25 |
| 12 | 28 | 25 |
| 13 | 28 | 25 |
| 14 | 28 | 25 |
| 15 | 28 | 25 |
| 16 | 28 | 25 |
| 17 | 27 | 25 |
| 18 | 27 | 25 |
| 19 | 27 | 25 |
| 20 | 27 | 25 |
| 21 | 27 | 25 |
| 22 | 27 | 25 |
| 23 | 27 | 25 |
| 24 | 27 | 25 |
| 25 | 27 | 25 |
| 26 | 27 | 25 |
| 27 | 27 | 25 |
| 28 | 27 | 25 |
| 29 | 27 | 25 |
| 30 | 27 | 25 |
| 31 | 27 | 25 |
How December really feels in An Trạch
Once humidity and wind are folded in, December 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.
December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
An Trạch weather by month
How December compares with the rest of the year at a glance. December is the 10th-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 | 27° / 25° | 26 | 4.1 | 11.5 | 7.2 |
| Feb | 27° / 25° | 11 | 1.7 | 11.7 | 7.7 |
| Mar | 28° / 26° | 38 | 6.3 | 11.9 | 6.5 |
| Apr | 30° / 27° | 84 | 13.2 | 12.2 | 4.9 |
| May | 30° / 27° | 203 | 25.9 | 12.4 | 3.1 |
| Jun | 30° / 27° | 242 | 27.4 | 12.5 | 2.9 |
| Jul | 29° / 26° | 250 | 29.3 | 12.5 | 3.0 |
| Aug | 29° / 26° | 234 | 28.9 | 12.3 | 3.0 |
| Sep | 29° / 26° | 270 | 28.1 | 12.1 | 3.0 |
| Oct | 28° / 26° | 323 | 28.7 | 11.8 | 3.2 |
| Nov | 28° / 26° | 210 | 21.3 | 11.6 | 4.2 |
| Dec | 28° / 25° | 108 | 12.2 | 11.5 | 5.9 |
Cloud cover in December
The sky is clear or mostly clear about 16% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 70%.
| 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 (%) | 32 | 32 | 33 | 32 | 32 | 32 | 32 | 31 | 31 | 32 | 31 | 31 | 30 | 29 | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 29 | 29 | 30 | 30 | 33 | 34 | 35 |
| Cloudier (%) | 68 | 68 | 67 | 68 | 68 | 68 | 68 | 69 | 69 | 68 | 69 | 69 | 70 | 71 | 71 | 72 | 72 | 72 | 72 | 73 | 73 | 73 | 73 | 72 | 71 | 71 | 70 | 70 | 67 | 66 | 65 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 32 | 68 |
| 2 | 32 | 68 |
| 3 | 33 | 67 |
| 4 | 32 | 68 |
| 5 | 32 | 68 |
| 6 | 32 | 68 |
| 7 | 32 | 68 |
| 8 | 31 | 69 |
| 9 | 31 | 69 |
| 10 | 32 | 68 |
| 11 | 31 | 69 |
| 12 | 31 | 69 |
| 13 | 30 | 70 |
| 14 | 29 | 71 |
| 15 | 29 | 71 |
| 16 | 28 | 72 |
| 17 | 28 | 72 |
| 18 | 28 | 72 |
| 19 | 28 | 72 |
| 20 | 27 | 73 |
| 21 | 27 | 73 |
| 22 | 27 | 73 |
| 23 | 27 | 73 |
| 24 | 28 | 72 |
| 25 | 29 | 71 |
| 26 | 29 | 71 |
| 27 | 30 | 70 |
| 28 | 30 | 70 |
| 29 | 33 | 67 |
| 30 | 34 | 66 |
| 31 | 35 | 65 |
Chance of precipitation in December
An Trạch gets around 108 mm of rain over 12.2 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 39% and peaks near 57% on the wettest days. The odds ease 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 (%) | 57 | 56 | 55 | 54 | 53 | 52 | 51 | 50 | 48 | 47 | 46 | 44 | 43 | 41 | 40 | 39 | 37 | 36 | 35 | 34 | 33 | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 |
| Rain chance (%) | |
|---|---|
| 1 | 57 |
| 2 | 56 |
| 3 | 55 |
| 4 | 54 |
| 5 | 53 |
| 6 | 52 |
| 7 | 51 |
| 8 | 50 |
| 9 | 48 |
| 10 | 47 |
| 11 | 46 |
| 12 | 44 |
| 13 | 43 |
| 14 | 41 |
| 15 | 40 |
| 16 | 39 |
| 17 | 37 |
| 18 | 36 |
| 19 | 35 |
| 20 | 34 |
| 21 | 33 |
| 22 | 31 |
| 23 | 30 |
| 24 | 29 |
| 25 | 28 |
| 26 | 27 |
| 27 | 26 |
| 28 | 25 |
| 29 | 24 |
| 30 | 23 |
| 31 | 22 |
Humidity in December
Most of December feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the oppressive band about 73% of days. Sticky, muggy-or-worse air turns up on roughly 99% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Muggy (%) | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 10 | 11 | 11 | 12 | 12 | 12 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 |
| Oppressive (%) | 57 | 59 | 60 | 62 | 64 | 66 | 67 | 69 | 71 | 73 | 73 | 75 | 75 | 74 | 75 | 75 | 76 | 75 | 76 | 76 | 76 | 77 | 77 | 77 | 78 | 78 | 78 | 79 | 79 | 79 | 79 |
| Miserable (%) | 39 | 37 | 35 | 33 | 31 | 29 | 27 | 25 | 23 | 21 | 20 | 18 | 17 | 16 | 15 | 14 | 13 | 13 | 12 | 11 | 11 | 10 | 9 | 9 | 8 | 7 | 7 | 6 | 6 | 6 | 6 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 0 | 4 | 57 | 39 |
| 2 | 0 | 4 | 59 | 37 |
| 3 | 0 | 5 | 60 | 35 |
| 4 | 0 | 5 | 62 | 33 |
| 5 | 0 | 5 | 64 | 31 |
| 6 | 0 | 5 | 66 | 29 |
| 7 | 0 | 6 | 67 | 27 |
| 8 | 0 | 6 | 69 | 25 |
| 9 | 0 | 6 | 71 | 23 |
| 10 | 0 | 6 | 73 | 21 |
| 11 | 0 | 7 | 73 | 20 |
| 12 | 0 | 7 | 75 | 18 |
| 13 | 0 | 8 | 75 | 17 |
| 14 | 1 | 9 | 74 | 16 |
| 15 | 1 | 9 | 75 | 15 |
| 16 | 1 | 10 | 75 | 14 |
| 17 | 1 | 10 | 76 | 13 |
| 18 | 1 | 11 | 75 | 13 |
| 19 | 1 | 11 | 76 | 12 |
| 20 | 1 | 12 | 76 | 11 |
| 21 | 1 | 12 | 76 | 11 |
| 22 | 1 | 12 | 77 | 10 |
| 23 | 1 | 13 | 77 | 9 |
| 24 | 1 | 13 | 77 | 9 |
| 25 | 1 | 13 | 78 | 8 |
| 26 | 1 | 14 | 78 | 7 |
| 27 | 1 | 14 | 78 | 7 |
| 28 | 1 | 14 | 79 | 6 |
| 29 | 1 | 14 | 79 | 6 |
| 30 | 1 | 14 | 79 | 6 |
| 31 | 1 | 14 | 79 | 6 |
Wind in December
Winds average 19 km/h in December.
Across December, daily wind ranges from about 18 km/h on the calmest days to 19 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) | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 18 | light breeze |
| 2 | 18 | light breeze |
| 3 | 18 | light breeze |
| 4 | 18 | light breeze |
| 5 | 18 | light breeze |
| 6 | 18 | light breeze |
| 7 | 18 | light breeze |
| 8 | 18 | light breeze |
| 9 | 18 | light breeze |
| 10 | 19 | light breeze |
| 11 | 19 | light breeze |
| 12 | 19 | light breeze |
| 13 | 19 | light breeze |
| 14 | 19 | light breeze |
| 15 | 19 | light breeze |
| 16 | 19 | light breeze |
| 17 | 19 | light breeze |
| 18 | 19 | light breeze |
| 19 | 19 | light breeze |
| 20 | 19 | light breeze |
| 21 | 19 | light breeze |
| 22 | 19 | light breeze |
| 23 | 19 | light breeze |
| 24 | 19 | light breeze |
| 25 | 19 | light breeze |
| 26 | 19 | light breeze |
| 27 | 19 | light breeze |
| 28 | 19 | light breeze |
| 29 | 19 | light breeze |
| 30 | 19 | light breeze |
| 31 | 19 | light breeze |
Sunrise & sunset in December
Daylight runs from about 11 h 30 min at the start of December to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 0 minutes over December. Sunrise moves from 6:03 AM to 6:17 AM, and sunset from 5:33 PM to 5:46 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 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 |
| Sunrise (AM) | 6:03 | 6:03 | 6:04 | 6:04 | 6:05 | 6:05 | 6:06 | 6:06 | 6:07 | 6:07 | 6:08 | 6:08 | 6:09 | 6:09 | 6:10 | 6:10 | 6:11 | 6:11 | 6:12 | 6:12 | 6:13 | 6:13 | 6:14 | 6:14 | 6:15 | 6:15 | 6:16 | 6:16 | 6:16 | 6:17 | 6:17 |
| Sunset (PM) | 5:33 | 5:34 | 5:34 | 5:34 | 5:35 | 5:35 | 5:35 | 5:36 | 5:36 | 5:36 | 5:37 | 5:37 | 5:38 | 5:38 | 5:38 | 5:39 | 5:39 | 5:40 | 5:40 | 5:41 | 5:41 | 5:42 | 5:42 | 5:42 | 5:43 | 5:43 | 5:44 | 5:44 | 5:45 | 5:45 | 5:46 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 6:03 | 5:33 |
| 2 | 11.5 | 6:03 | 5:34 |
| 3 | 11.5 | 6:04 | 5:34 |
| 4 | 11.5 | 6:04 | 5:34 |
| 5 | 11.5 | 6:05 | 5:35 |
| 6 | 11.5 | 6:05 | 5:35 |
| 7 | 11.5 | 6:06 | 5:35 |
| 8 | 11.5 | 6:06 | 5:36 |
| 9 | 11.5 | 6:07 | 5:36 |
| 10 | 11.5 | 6:07 | 5:36 |
| 11 | 11.5 | 6:08 | 5:37 |
| 12 | 11.5 | 6:08 | 5:37 |
| 13 | 11.5 | 6:09 | 5:38 |
| 14 | 11.5 | 6:09 | 5:38 |
| 15 | 11.5 | 6:10 | 5:38 |
| 16 | 11.5 | 6:10 | 5:39 |
| 17 | 11.5 | 6:11 | 5:39 |
| 18 | 11.5 | 6:11 | 5:40 |
| 19 | 11.5 | 6:12 | 5:40 |
| 20 | 11.5 | 6:12 | 5:41 |
| 21 | 11.5 | 6:13 | 5:41 |
| 22 | 11.5 | 6:13 | 5:42 |
| 23 | 11.5 | 6:14 | 5:42 |
| 24 | 11.5 | 6:14 | 5:42 |
| 25 | 11.5 | 6:15 | 5:43 |
| 26 | 11.5 | 6:15 | 5:43 |
| 27 | 11.5 | 6:16 | 5:44 |
| 28 | 11.5 | 6:16 | 5:44 |
| 29 | 11.5 | 6:16 | 5:45 |
| 30 | 11.5 | 6:17 | 5:45 |
| 31 | 11.5 | 6:17 | 5:46 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 4.57 kWh/m².
For context, solar energy here swings from a low near 4.51 kWh/m² to a high of 6.31 kWh/m² in April across the year — December's 4.57 kWh/m² sits near the bottom.
| 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) | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.8 |
| 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 | 4.5 | Bright |
| 2 | 4.5 | Bright |
| 3 | 4.5 | Bright |
| 4 | 4.5 | Bright |
| 5 | 4.5 | Bright |
| 6 | 4.5 | Bright |
| 7 | 4.5 | Bright |
| 8 | 4.5 | Bright |
| 9 | 4.5 | Bright |
| 10 | 4.6 | Bright |
| 11 | 4.6 | Bright |
| 12 | 4.6 | Bright |
| 13 | 4.6 | Bright |
| 14 | 4.6 | Bright |
| 15 | 4.6 | Bright |
| 16 | 4.6 | Bright |
| 17 | 4.6 | Bright |
| 18 | 4.6 | Bright |
| 19 | 4.6 | Bright |
| 20 | 4.6 | Bright |
| 21 | 4.6 | Bright |
| 22 | 4.6 | Bright |
| 23 | 4.6 | Bright |
| 24 | 4.6 | Bright |
| 25 | 4.7 | Bright |
| 26 | 4.7 | Bright |
| 27 | 4.7 | Bright |
| 28 | 4.7 | Bright |
| 29 | 4.7 | Bright |
| 30 | 4.7 | Bright |
| 31 | 4.8 | Bright |
Hazard calendar for An Trạch
In December, An Trạch sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
An Trạch sits in the Pacific typhoon belt; the season peaks July–October.
An Trạch's rainy season runs May–November, when most of the year's rain falls.
Is December a good time to visit An Trạch?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit An Trạch for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for An Trạch in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, An Trạch sees daytime highs around 28°C and nights near 25°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.
Sea temperature near An Trạch in December
The nearest coast averages about 27°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 22 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 | 28 | 29 | 30 | 30 | 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 | 28 | Warm |
| Apr | 29 | Tropical |
| May | 30 | Tropical |
| Jun | 30 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Tropical |
| Dec | 27 | Warm |
UV index in An Trạch in December
Clear-sky midday UV in December peaks 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 An Trạch peaks around March 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 10 (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) | 10 | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 13 | 11 | 10 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Extreme |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 13 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 13 | Extreme |
| Oct | 11 | Extreme |
| Nov | 10 | Extreme |
| Dec | 10 | Very high |
Air quality in An Trạch in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in An Trạch is worst in December — around 25 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (May, 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) | 19 | 16 | 15 | 15 | 15 | 17 | 19 | 17 | 19 | 22 | 21 | 25 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 19 | Moderate |
| Feb | 16 | Moderate |
| Mar | 15 | Moderate |
| Apr | 15 | Moderate |
| May | 15 | Moderate |
| Jun | 17 | Moderate |
| Jul | 19 | Moderate |
| Aug | 17 | Moderate |
| Sep | 19 | Moderate |
| Oct | 22 | Moderate |
| Nov | 21 | Moderate |
| Dec | 25 | Moderate |
Where is An Trạch?
An Trạch sits at 9.1°N, 105.4°E, 1 m above sea level, in Vietnam. The nearest listed city is Gành Hào, 5.0 km away.
Topography around An Trạch
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of An Trạch.
Within 3 km, the terrain around An Trạch has only modest variations in elevation — a maximum elevation change of 10 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 13 m; within 80 km, only modest variations in elevation — a maximum elevation change of 22 m.
The land around An Trạch is covered by water (56%) and trees (20%) within 3 km, water (67%) within 16 km, and water (56%) and cropland (26%) 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 An Trạch (9.0686°, 105.3958°, elevation 1 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).