Nong Khai weather in March
In March, Nong Khai sees average daytime highs of 34°C and overnight lows near 22°C, with 31 mm of rain across 5.6 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 8th-wettest month of the year here.
Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 64% of the time in March, and the air most often feels muggy.
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 Nong Khai's 5th-clearest and 2nd-windiest month. For the whole year in context, see Nong Khai's year-round climate.
- Daytime high
- 34°
- 2nd warmest
- Overnight low
- 22°
- 5th coldest
- Rainfall
- 31 mm
- 5.6 wet days
- Daylight
- 11 h 54 min
- 6:22 AM – 6:15 PM
- Cloud cover
- 36%
- 5th clearest
- Wind
- 7 km/h
- 2nd windiest
- Solar energy
- 5.85 kWh/m²
- Travel score
- 3.8
- out of 10
Nong Khai is town in Nong Khai province, Thailand.
- Density
- 2,042/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in March
Day-to-day highs hold fairly steady near 34°C through the month.
A typical March day in Nong Khai reaches about 34°C in the afternoon and slips back to 22°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 37°C. Set against its neighbours, March runs about 2°C warmer than February and about 1°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) | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 |
| Avg low (°C) | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 33 | 20 |
| 2 | 33 | 20 |
| 3 | 33 | 21 |
| 4 | 33 | 21 |
| 5 | 33 | 21 |
| 6 | 33 | 21 |
| 7 | 33 | 21 |
| 8 | 33 | 21 |
| 9 | 33 | 21 |
| 10 | 33 | 21 |
| 11 | 34 | 22 |
| 12 | 34 | 22 |
| 13 | 34 | 22 |
| 14 | 34 | 22 |
| 15 | 34 | 22 |
| 16 | 34 | 22 |
| 17 | 34 | 22 |
| 18 | 34 | 22 |
| 19 | 34 | 22 |
| 20 | 34 | 23 |
| 21 | 34 | 23 |
| 22 | 34 | 23 |
| 23 | 34 | 23 |
| 24 | 34 | 23 |
| 25 | 34 | 23 |
| 26 | 34 | 23 |
| 27 | 34 | 23 |
| 28 | 34 | 23 |
| 29 | 34 | 23 |
| 30 | 34 | 23 |
| 31 | 34 | 23 |
How March really feels in Nong Khai
Once humidity and wind are folded in, March averages 31 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 March is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Nong Khai weather by month
How March compares with the rest of the year at a glance. March is the 2nd-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 | 29° / 17° | 9 | 1.6 | 11 | 7.0 |
| Feb | 31° / 19° | 14 | 2 | 11.4 | 5.7 |
| Mar | 34° / 22° | 31 | 5.6 | 11.9 | 3.8 |
| Apr | 35° / 25° | 66 | 10.6 | 12.4 | 2.6 |
| May | 33° / 25° | 245 | 22.6 | 12.8 | 2.3 |
| Jun | 32° / 26° | 314 | 25.5 | 13.1 | 2.3 |
| Jul | 32° / 26° | 379 | 27.4 | 13 | 2.4 |
| Aug | 31° / 25° | 406 | 27.9 | 12.6 | 2.4 |
| Sep | 31° / 25° | 297 | 24.5 | 12.1 | 2.7 |
| Oct | 31° / 24° | 93 | 11.5 | 11.6 | 4.2 |
| Nov | 31° / 21° | 19 | 3.1 | 11.2 | 5.8 |
| Dec | 29° / 18° | 8 | 1.3 | 10.9 | 7.2 |
Cloud cover in March
The sky is clear or mostly clear about 64% of the time in March.
Beyond those clear spells, partly cloudy skies cover about 15% of March, with mostly cloudy or overcast conditions the remaining 22%. Skies tend to cloud over 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 88 | 88 | 88 | 88 | 87 | 86 | 86 | 85 | 85 | 84 | 83 | 83 | 81 | 80 | 78 | 77 | 77 | 75 | 75 | 73 | 73 | 72 | 72 | 72 | 70 | 70 | 70 | 70 | 71 | 71 | 71 |
| Cloudier (%) | 12 | 12 | 12 | 12 | 13 | 14 | 14 | 15 | 15 | 16 | 17 | 17 | 19 | 20 | 22 | 23 | 23 | 25 | 25 | 27 | 27 | 28 | 28 | 28 | 30 | 30 | 30 | 30 | 29 | 29 | 29 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 88 | 12 |
| 2 | 88 | 12 |
| 3 | 88 | 12 |
| 4 | 88 | 12 |
| 5 | 87 | 13 |
| 6 | 86 | 14 |
| 7 | 86 | 14 |
| 8 | 85 | 15 |
| 9 | 85 | 15 |
| 10 | 84 | 16 |
| 11 | 83 | 17 |
| 12 | 83 | 17 |
| 13 | 81 | 19 |
| 14 | 80 | 20 |
| 15 | 78 | 22 |
| 16 | 77 | 23 |
| 17 | 77 | 23 |
| 18 | 75 | 25 |
| 19 | 75 | 25 |
| 20 | 73 | 27 |
| 21 | 73 | 27 |
| 22 | 72 | 28 |
| 23 | 72 | 28 |
| 24 | 72 | 28 |
| 25 | 70 | 30 |
| 26 | 70 | 30 |
| 27 | 70 | 30 |
| 28 | 70 | 30 |
| 29 | 71 | 29 |
| 30 | 71 | 29 |
| 31 | 71 | 29 |
Chance of precipitation in March
Nong Khai gets around 31 mm of rain over 5.6 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 18% and peaks near 26% 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 (%) | 8 | 8 | 8 | 9 | 9 | 9 | 10 | 11 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 24 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 |
| Rain chance (%) | |
|---|---|
| 1 | 8 |
| 2 | 8 |
| 3 | 8 |
| 4 | 9 |
| 5 | 9 |
| 6 | 9 |
| 7 | 10 |
| 8 | 11 |
| 9 | 11 |
| 10 | 12 |
| 11 | 13 |
| 12 | 14 |
| 13 | 15 |
| 14 | 16 |
| 15 | 17 |
| 16 | 18 |
| 17 | 19 |
| 18 | 20 |
| 19 | 21 |
| 20 | 22 |
| 21 | 23 |
| 22 | 24 |
| 23 | 24 |
| 24 | 25 |
| 25 | 25 |
| 26 | 25 |
| 27 | 26 |
| 28 | 26 |
| 29 | 26 |
| 30 | 26 |
| 31 | 26 |
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 40% of days. Sticky, muggy-or-worse air turns up on roughly 78% 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 (%) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Comfortable (%) | 11 | 10 | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Humid (%) | 26 | 26 | 26 | 25 | 25 | 24 | 23 | 22 | 21 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 7 | 7 |
| Muggy (%) | 39 | 40 | 41 | 41 | 42 | 43 | 43 | 44 | 45 | 45 | 45 | 45 | 45 | 45 | 44 | 44 | 43 | 42 | 41 | 40 | 39 | 38 | 36 | 35 | 35 | 34 | 33 | 32 | 31 | 30 | 29 |
| Oppressive (%) | 20 | 20 | 21 | 21 | 22 | 22 | 23 | 24 | 26 | 27 | 29 | 30 | 32 | 34 | 36 | 37 | 39 | 41 | 42 | 44 | 45 | 47 | 48 | 49 | 51 | 52 | 52 | 54 | 54 | 56 | 56 |
| Miserable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 5 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 4 | 11 | 26 | 39 | 20 | 0 |
| 2 | 4 | 10 | 26 | 40 | 20 | 0 |
| 3 | 4 | 9 | 26 | 41 | 21 | 0 |
| 4 | 4 | 8 | 25 | 41 | 21 | 0 |
| 5 | 4 | 8 | 25 | 42 | 22 | 0 |
| 6 | 4 | 7 | 24 | 43 | 22 | 0 |
| 7 | 4 | 7 | 23 | 43 | 23 | 0 |
| 8 | 3 | 6 | 22 | 44 | 24 | 0 |
| 9 | 3 | 6 | 21 | 45 | 26 | 0 |
| 10 | 3 | 5 | 19 | 45 | 27 | 0 |
| 11 | 3 | 5 | 18 | 45 | 29 | 0 |
| 12 | 2 | 5 | 17 | 45 | 30 | 0 |
| 13 | 2 | 4 | 16 | 45 | 32 | 1 |
| 14 | 2 | 4 | 15 | 45 | 34 | 1 |
| 15 | 2 | 4 | 14 | 44 | 36 | 1 |
| 16 | 1 | 4 | 13 | 44 | 37 | 1 |
| 17 | 1 | 3 | 12 | 43 | 39 | 1 |
| 18 | 1 | 3 | 12 | 42 | 41 | 1 |
| 19 | 1 | 3 | 11 | 41 | 42 | 1 |
| 20 | 1 | 3 | 11 | 40 | 44 | 1 |
| 21 | 0 | 3 | 11 | 39 | 45 | 1 |
| 22 | 0 | 4 | 10 | 38 | 47 | 2 |
| 23 | 0 | 4 | 10 | 36 | 48 | 2 |
| 24 | 0 | 4 | 10 | 35 | 49 | 2 |
| 25 | 0 | 3 | 9 | 35 | 51 | 2 |
| 26 | 0 | 3 | 9 | 34 | 52 | 2 |
| 27 | 0 | 3 | 9 | 33 | 52 | 3 |
| 28 | 0 | 3 | 8 | 32 | 54 | 3 |
| 29 | 0 | 3 | 8 | 31 | 54 | 4 |
| 30 | 0 | 3 | 7 | 30 | 56 | 4 |
| 31 | 0 | 3 | 7 | 29 | 56 | 5 |
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 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 6:34 AM to 6:10 AM, and sunset from 6:11 PM to 6:18 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) | 6:34 | 6:33 | 6:32 | 6:32 | 6:31 | 6:30 | 6:29 | 6:29 | 6:28 | 6:27 | 6:26 | 6:26 | 6:25 | 6:24 | 6:23 | 6:22 | 6:22 | 6:21 | 6:20 | 6:19 | 6:18 | 6:18 | 6:17 | 6:16 | 6:15 | 6:14 | 6:13 | 6:12 | 6:12 | 6:11 | 6:10 |
| Sunset (PM) | 6:11 | 6:11 | 6:11 | 6:12 | 6:12 | 6:12 | 6:13 | 6:13 | 6:13 | 6:13 | 6:14 | 6:14 | 6:14 | 6:14 | 6:15 | 6:15 | 6:15 | 6:15 | 6:16 | 6:16 | 6:16 | 6:16 | 6:16 | 6:17 | 6:17 | 6:17 | 6:17 | 6:17 | 6:18 | 6:18 | 6:18 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.6 | 6:34 | 6:11 |
| 2 | 11.6 | 6:33 | 6:11 |
| 3 | 11.7 | 6:32 | 6:11 |
| 4 | 11.7 | 6:32 | 6:12 |
| 5 | 11.7 | 6:31 | 6:12 |
| 6 | 11.7 | 6:30 | 6:12 |
| 7 | 11.7 | 6:29 | 6:13 |
| 8 | 11.7 | 6:29 | 6:13 |
| 9 | 11.8 | 6:28 | 6:13 |
| 10 | 11.8 | 6:27 | 6:13 |
| 11 | 11.8 | 6:26 | 6:14 |
| 12 | 11.8 | 6:26 | 6:14 |
| 13 | 11.8 | 6:25 | 6:14 |
| 14 | 11.8 | 6:24 | 6:14 |
| 15 | 11.9 | 6:23 | 6:15 |
| 16 | 11.9 | 6:22 | 6:15 |
| 17 | 11.9 | 6:22 | 6:15 |
| 18 | 11.9 | 6:21 | 6:15 |
| 19 | 11.9 | 6:20 | 6:16 |
| 20 | 11.9 | 6:19 | 6:16 |
| 21 | 12.0 | 6:18 | 6:16 |
| 22 | 12.0 | 6:18 | 6:16 |
| 23 | 12.0 | 6:17 | 6:16 |
| 24 | 12.0 | 6:16 | 6:17 |
| 25 | 12.0 | 6:15 | 6:17 |
| 26 | 12.0 | 6:14 | 6:17 |
| 27 | 12.1 | 6:13 | 6:17 |
| 28 | 12.1 | 6:12 | 6:17 |
| 29 | 12.1 | 6:12 | 6:18 |
| 30 | 12.1 | 6:11 | 6:18 |
| 31 | 12.1 | 6:10 | 6:18 |
Solar energy in March
Average shortwave solar energy reaching the ground each day in March, about 5.85 kWh/m².
For context, solar energy here swings from a low near 4.13 kWh/m² to a high of 6.04 kWh/m² in April across the year — March's 5.85 kWh/m² sits near the top of that range.
| 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) | 5.7 | 5.7 | 5.7 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 6.0 |
| 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 | 5.7 | Bright |
| 2 | 5.7 | Bright |
| 3 | 5.7 | Bright |
| 4 | 5.8 | Bright |
| 5 | 5.8 | Bright |
| 6 | 5.8 | Bright |
| 7 | 5.8 | Bright |
| 8 | 5.8 | Bright |
| 9 | 5.8 | Bright |
| 10 | 5.8 | Bright |
| 11 | 5.8 | Bright |
| 12 | 5.9 | Bright |
| 13 | 5.9 | Bright |
| 14 | 5.9 | Bright |
| 15 | 5.9 | Bright |
| 16 | 5.9 | Bright |
| 17 | 5.9 | Bright |
| 18 | 5.9 | Bright |
| 19 | 5.9 | Bright |
| 20 | 5.9 | Bright |
| 21 | 5.9 | Bright |
| 22 | 5.9 | Bright |
| 23 | 5.9 | Bright |
| 24 | 5.9 | Bright |
| 25 | 5.9 | Bright |
| 26 | 5.9 | Bright |
| 27 | 5.9 | Bright |
| 28 | 5.9 | Bright |
| 29 | 5.9 | Bright |
| 30 | 5.9 | Bright |
| 31 | 6.0 | Bright |
Hazard calendar for Nong Khai
In March, Nong Khai sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Nong Khai sits in the Pacific typhoon belt; the season peaks July–October.
Nong Khai's monsoon runs May–September, when most of the year's rain falls.
Is March a good time to visit Nong Khai?
Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
March is a weaker month for outdoor sightseeing in Nong Khai. The water and warmth also suit a beach or pool day.
What to pack for Nong Khai in March
From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In March, Nong Khai sees daytime highs around 34°C and nights near 22°C. Pack light clothes. Worth having: sun protection. About 6 days see rain.
UV index in Nong Khai in March
Clear-sky midday UV in March 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 Nong Khai peaks around August 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (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) | 8 | 10 | 12 | 10 | 11 | 13 | 13 | 13 | 11 | 10 | 8 | 7 |
| Level | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Very high |
| Mar | 12 | Extreme |
| Apr | 10 | Extreme |
| May | 11 | Extreme |
| Jun | 13 | Extreme |
| Jul | 13 | Extreme |
| Aug | 13 | Extreme |
| Sep | 11 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | Very high |
Air quality in Nong Khai 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 Nong Khai is worst in March — around 77 µg/m³ PM2.5 (unhealthy), about 3.4× the cleanest month (July, 23 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) | 31 | 44 | 77 | 73 | 32 | 24 | 23 | 23 | 24 | 26 | 25 | 26 |
| Level | Moderate | Poor | Unhealthy | Unhealthy | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 31 | Moderate |
| Feb | 44 | Poor |
| Mar | 77 | Unhealthy |
| Apr | 73 | Unhealthy |
| May | 32 | Moderate |
| Jun | 24 | Moderate |
| Jul | 23 | Moderate |
| Aug | 23 | Moderate |
| Sep | 24 | Moderate |
| Oct | 26 | Moderate |
| Nov | 25 | Moderate |
| Dec | 26 | Moderate |
Where is Nong Khai?
Nong Khai sits at 17.9°N, 102.7°E, 168 m above sea level, in Thailand. The nearest listed city is Tha Bo, 17 km away.
Topography around Nong Khai
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Nong Khai.
Within 3 km, the terrain around Nong Khai has only modest variations in elevation — a maximum elevation change of 31 m around an average of 168 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 47 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,489 m.
The land around Nong Khai is covered by trees (34%) and artificial surfaces (32%) within 3 km, cropland (44%) and trees (31%) within 16 km, and trees (51%) and cropland (41%) within 80 km.
Thailand travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B / C
- 230 V · 50 Hz
- Prices
- ≈ 31% of US
- price level, 2025
- GDP per capita
- $8,057
- 2025
- Happiness
- 6.3 / 10
- World Happiness, 2025
- Homicide rate
- 4.8
- per 100k, 2011
- Road deaths
- 32.2
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Very low
- EF EPI 402
- 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 Nong Khai (17.8785°, 102.742°, elevation 168 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).