Surat Thani weather in January
In January, Surat Thani sees average daytime highs of 30°C and overnight lows near 24°C, with 69 mm of rain across 9.5 wet days and about 11.5 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.
Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 29% of the time in January, and the air most often feels oppressive.
Daylight stretches from about 11 h 30 min at the start of January to 11 h 36 min by month's end. Set against the rest of the year, January is Surat Thani's 3rd-clearest and 4th-windiest month. For the whole year in context, see Surat Thani's year-round climate.
- Daytime high
- 30°
- 10th warmest
- Overnight low
- 24°
- 1st coldest
- Rainfall
- 69 mm
- 9.5 wet days
- Daylight
- 11 h 30 min
- 6:46 AM – 6:18 PM
- Cloud cover
- 60%
- 3rd clearest
- Wind
- 11 km/h
- 4th windiest
- Solar energy
- 5 kWh/m²
- Travel score
- 5.3
- out of 10
Surat Thani is city in Surat Thani province, Thailand.
- Air quality
- Elevated
- PM2.5 17 µg/m³ · 2019
- Density
- 1,914/km²
- people per km²
- Founded
- 1930
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in January
Day-to-day highs hold fairly steady near 30°C through the month.
A typical January day in Surat Thani reaches about 30°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, January runs on par with December and about 1°C cooler than February.
| 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) | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 29 | 25 |
| 2 | 29 | 25 |
| 3 | 29 | 25 |
| 4 | 29 | 25 |
| 5 | 29 | 25 |
| 6 | 29 | 25 |
| 7 | 29 | 25 |
| 8 | 29 | 25 |
| 9 | 29 | 25 |
| 10 | 29 | 24 |
| 11 | 29 | 24 |
| 12 | 29 | 24 |
| 13 | 29 | 24 |
| 14 | 29 | 24 |
| 15 | 29 | 24 |
| 16 | 30 | 24 |
| 17 | 30 | 24 |
| 18 | 30 | 24 |
| 19 | 30 | 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 | 30 | 24 |
| 31 | 30 | 24 |
How January really feels in Surat Thani
Once humidity and wind are folded in, January 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 January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Surat Thani weather by month
How January compares with the rest of the year at a glance. January is the 10th-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 30° / 24° | 69 | 9.5 | 11.5 | 5.3 |
| Feb | 31° / 25° | 31 | 4.8 | 11.7 | 5.2 |
| Mar | 32° / 25° | 92 | 9.2 | 11.9 | 4.1 |
| Apr | 33° / 26° | 114 | 14.4 | 12.2 | 3.2 |
| May | 32° / 26° | 124 | 22.1 | 12.4 | 2.6 |
| Jun | 32° / 26° | 95 | 18.7 | 12.5 | 3.0 |
| Jul | 32° / 26° | 89 | 18.5 | 12.5 | 3.2 |
| Aug | 32° / 26° | 108 | 19.8 | 12.3 | 3.1 |
| Sep | 31° / 25° | 155 | 23.7 | 12.1 | 2.9 |
| Oct | 30° / 25° | 268 | 27.3 | 11.8 | 3.0 |
| Nov | 29° / 25° | 267 | 23.5 | 11.6 | 3.5 |
| Dec | 29° / 25° | 149 | 15.7 | 11.5 | 4.7 |
Cloud cover in January
The sky is clear or mostly clear about 29% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 20% of January, with mostly cloudy or overcast conditions the remaining 51%. 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 40 | 41 | 42 | 43 | 43 | 44 | 44 | 45 | 45 | 45 | 46 | 46 | 47 | 47 | 47 | 47 | 48 | 49 | 49 | 50 | 51 | 52 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 |
| Cloudier (%) | 60 | 59 | 58 | 57 | 57 | 56 | 56 | 55 | 55 | 55 | 54 | 54 | 53 | 53 | 53 | 53 | 52 | 51 | 51 | 50 | 49 | 48 | 48 | 47 | 46 | 45 | 44 | 43 | 42 | 41 | 40 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 40 | 60 |
| 2 | 41 | 59 |
| 3 | 42 | 58 |
| 4 | 43 | 57 |
| 5 | 43 | 57 |
| 6 | 44 | 56 |
| 7 | 44 | 56 |
| 8 | 45 | 55 |
| 9 | 45 | 55 |
| 10 | 45 | 55 |
| 11 | 46 | 54 |
| 12 | 46 | 54 |
| 13 | 47 | 53 |
| 14 | 47 | 53 |
| 15 | 47 | 53 |
| 16 | 47 | 53 |
| 17 | 48 | 52 |
| 18 | 49 | 51 |
| 19 | 49 | 51 |
| 20 | 50 | 50 |
| 21 | 51 | 49 |
| 22 | 52 | 48 |
| 23 | 52 | 48 |
| 24 | 53 | 47 |
| 25 | 54 | 46 |
| 26 | 55 | 45 |
| 27 | 56 | 44 |
| 28 | 57 | 43 |
| 29 | 58 | 42 |
| 30 | 59 | 41 |
| 31 | 60 | 40 |
Chance of precipitation in January
Surat Thani gets around 69 mm of rain over 9.5 wet days in January. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 30% and peaks near 37% 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 (%) | 37 | 36 | 36 | 35 | 35 | 34 | 33 | 33 | 32 | 31 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 26 | 25 | 24 |
| Rain chance (%) | |
|---|---|
| 1 | 37 |
| 2 | 36 |
| 3 | 36 |
| 4 | 35 |
| 5 | 35 |
| 6 | 34 |
| 7 | 33 |
| 8 | 33 |
| 9 | 32 |
| 10 | 31 |
| 11 | 30 |
| 12 | 30 |
| 13 | 29 |
| 14 | 29 |
| 15 | 29 |
| 16 | 29 |
| 17 | 29 |
| 18 | 29 |
| 19 | 29 |
| 20 | 29 |
| 21 | 29 |
| 22 | 29 |
| 23 | 29 |
| 24 | 28 |
| 25 | 28 |
| 26 | 28 |
| 27 | 27 |
| 28 | 27 |
| 29 | 26 |
| 30 | 25 |
| 31 | 24 |
Humidity in January
Most of January feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the oppressive band about 75% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Humid (%) | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Muggy (%) | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 |
| Oppressive (%) | 71 | 71 | 73 | 74 | 74 | 75 | 76 | 76 | 76 | 76 | 76 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 76 | 76 | 77 | 77 | 77 | 78 | 78 | 78 | 78 | 79 | 79 |
| Miserable (%) | 17 | 17 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 12 | 12 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 1 | 11 | 71 | 17 |
| 2 | 1 | 11 | 71 | 17 |
| 3 | 1 | 10 | 73 | 16 |
| 4 | 0 | 10 | 74 | 16 |
| 5 | 0 | 10 | 74 | 16 |
| 6 | 0 | 10 | 75 | 15 |
| 7 | 0 | 9 | 76 | 15 |
| 8 | 0 | 9 | 76 | 15 |
| 9 | 0 | 9 | 76 | 15 |
| 10 | 0 | 9 | 76 | 15 |
| 11 | 0 | 9 | 76 | 15 |
| 12 | 0 | 9 | 75 | 16 |
| 13 | 0 | 9 | 75 | 16 |
| 14 | 0 | 9 | 75 | 16 |
| 15 | 0 | 9 | 75 | 16 |
| 16 | 0 | 9 | 75 | 16 |
| 17 | 0 | 9 | 75 | 16 |
| 18 | 0 | 9 | 75 | 16 |
| 19 | 0 | 9 | 75 | 16 |
| 20 | 0 | 9 | 75 | 16 |
| 21 | 0 | 8 | 76 | 16 |
| 22 | 0 | 8 | 76 | 16 |
| 23 | 0 | 8 | 77 | 15 |
| 24 | 0 | 8 | 77 | 15 |
| 25 | 0 | 8 | 77 | 15 |
| 26 | 0 | 8 | 78 | 14 |
| 27 | 0 | 8 | 78 | 14 |
| 28 | 0 | 8 | 78 | 14 |
| 29 | 0 | 9 | 78 | 13 |
| 30 | 0 | 9 | 79 | 12 |
| 31 | 0 | 9 | 79 | 12 |
Wind in January
Winds average 11 km/h in January.
Across January, daily wind ranges from about 11 km/h on the calmest days to 12 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) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Feels | light breeze | light breeze | light breeze | 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 | 12 | light breeze |
| 2 | 12 | light breeze |
| 3 | 12 | light breeze |
| 4 | 12 | calm |
| 5 | 12 | calm |
| 6 | 12 | calm |
| 7 | 12 | calm |
| 8 | 11 | calm |
| 9 | 11 | calm |
| 10 | 11 | calm |
| 11 | 11 | calm |
| 12 | 11 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 11 | calm |
| 16 | 11 | calm |
| 17 | 11 | calm |
| 18 | 11 | calm |
| 19 | 11 | calm |
| 20 | 11 | calm |
| 21 | 11 | calm |
| 22 | 11 | calm |
| 23 | 11 | calm |
| 24 | 11 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 11 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
| 31 | 11 | calm |
Sunrise & sunset in January
Daylight runs from about 11 h 30 min at the start of January to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 6 minutes over January. Sunrise moves from 6:42 AM to 6:48 AM, and sunset from 6:10 PM to 6:24 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 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 |
| Sunrise (AM) | 6:42 | 6:42 | 6:42 | 6:43 | 6:43 | 6:43 | 6:44 | 6:44 | 6:44 | 6:45 | 6:45 | 6:45 | 6:46 | 6:46 | 6:46 | 6:46 | 6:47 | 6:47 | 6:47 | 6:47 | 6:47 | 6:47 | 6:48 | 6:48 | 6:48 | 6:48 | 6:48 | 6:48 | 6:48 | 6:48 | 6:48 |
| Sunset (PM) | 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 | 6:17 | 6:17 | 6:18 | 6:18 | 6:19 | 6:19 | 6:19 | 6:20 | 6:20 | 6:21 | 6:21 | 6:22 | 6:22 | 6:22 | 6:23 | 6:23 | 6:24 | 6:24 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 6:42 | 6:10 |
| 2 | 11.5 | 6:42 | 6:11 |
| 3 | 11.5 | 6:42 | 6:11 |
| 4 | 11.5 | 6:43 | 6:12 |
| 5 | 11.5 | 6:43 | 6:12 |
| 6 | 11.5 | 6:43 | 6:13 |
| 7 | 11.5 | 6:44 | 6:13 |
| 8 | 11.5 | 6:44 | 6:14 |
| 9 | 11.5 | 6:44 | 6:14 |
| 10 | 11.5 | 6:45 | 6:15 |
| 11 | 11.5 | 6:45 | 6:15 |
| 12 | 11.5 | 6:45 | 6:16 |
| 13 | 11.5 | 6:46 | 6:16 |
| 14 | 11.5 | 6:46 | 6:17 |
| 15 | 11.5 | 6:46 | 6:17 |
| 16 | 11.5 | 6:46 | 6:18 |
| 17 | 11.5 | 6:47 | 6:18 |
| 18 | 11.5 | 6:47 | 6:19 |
| 19 | 11.5 | 6:47 | 6:19 |
| 20 | 11.5 | 6:47 | 6:19 |
| 21 | 11.5 | 6:47 | 6:20 |
| 22 | 11.5 | 6:47 | 6:20 |
| 23 | 11.6 | 6:48 | 6:21 |
| 24 | 11.6 | 6:48 | 6:21 |
| 25 | 11.6 | 6:48 | 6:22 |
| 26 | 11.6 | 6:48 | 6:22 |
| 27 | 11.6 | 6:48 | 6:22 |
| 28 | 11.6 | 6:48 | 6:23 |
| 29 | 11.6 | 6:48 | 6:23 |
| 30 | 11.6 | 6:48 | 6:24 |
| 31 | 11.6 | 6:48 | 6:24 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 5 kWh/m².
For context, solar energy here swings from a low near 4.14 kWh/m² to a high of 6.26 kWh/m² in March across the year — January's 5 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) | 4.6 | 4.6 | 4.7 | 4.7 | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 | 4.9 | 5.0 | 5.0 | 5.0 | 5.0 | 5.1 | 5.1 | 5.1 | 5.1 | 5.2 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 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 | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.6 | Bright |
| 2 | 4.6 | Bright |
| 3 | 4.7 | Bright |
| 4 | 4.7 | Bright |
| 5 | 4.7 | Bright |
| 6 | 4.7 | Bright |
| 7 | 4.8 | Bright |
| 8 | 4.8 | Bright |
| 9 | 4.8 | Bright |
| 10 | 4.9 | Bright |
| 11 | 4.9 | Bright |
| 12 | 4.9 | Bright |
| 13 | 5.0 | Bright |
| 14 | 5.0 | Bright |
| 15 | 5.0 | Bright |
| 16 | 5.0 | Bright |
| 17 | 5.1 | Bright |
| 18 | 5.1 | Bright |
| 19 | 5.1 | Bright |
| 20 | 5.1 | Bright |
| 21 | 5.2 | Bright |
| 22 | 5.2 | Bright |
| 23 | 5.2 | Bright |
| 24 | 5.2 | Bright |
| 25 | 5.3 | Bright |
| 26 | 5.3 | Bright |
| 27 | 5.3 | Bright |
| 28 | 5.3 | Bright |
| 29 | 5.4 | Bright |
| 30 | 5.4 | Bright |
| 31 | 5.5 | Bright |
Hazard calendar for Surat Thani
None of Surat Thani's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Surat Thani sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.
Surat Thani's rainy season runs September–December, when most of the year's rain falls.
Is January a good time to visit Surat Thani?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a reasonable time to visit Surat Thani for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Surat Thani in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Surat Thani sees daytime highs around 30°C and nights near 24°C. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.
Sea temperature near Surat Thani in January
The nearest coast averages about 28°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 27 km away) is warmest in May at about 31°C and coldest in January near 28°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) | 28 | 28 | 29 | 30 | 31 | 30 | 30 | 29 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Warm |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 31 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Warm |
UV index in Surat Thani in January
Clear-sky midday UV in January 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 Surat Thani peaks around August 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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 | 12 | 12 | 11 | 14 | 13 | 12 | 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 | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 14 | Extreme |
| Sep | 13 | Extreme |
| Oct | 12 | Extreme |
| Nov | 10 | Extreme |
| Dec | 10 | Very high |
Air quality in Surat Thani in January
Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.
Air quality in Surat Thani is worst in April — around 21 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Seasonal pattern from CAMS reanalysis, scaled to Surat Thani's WHO annual average of 17 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 19 | 19 | 21 | 21 | 17 | 16 | 17 | 14 | 15 | 15 | 15 | 15 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 19 | Moderate |
| Feb | 19 | Moderate |
| Mar | 21 | Moderate |
| Apr | 21 | Moderate |
| May | 17 | Moderate |
| Jun | 16 | Moderate |
| Jul | 17 | Moderate |
| Aug | 14 | Moderate |
| Sep | 15 | Moderate |
| Oct | 15 | Moderate |
| Nov | 15 | Moderate |
| Dec | 15 | Moderate |
Where is Surat Thani?
Surat Thani sits at 9.1°N, 99.3°E, 10 m above sea level, in Thailand. The nearest listed city is Tha Kham, 12 km away.
Topography around Surat Thani
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Surat Thani.
Within 3 km, the terrain around Surat Thani has only modest variations in elevation — a maximum elevation change of 35 m around an average of 6 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 308 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,599 m.
The land around Surat Thani is covered by artificial surfaces (45%) and trees (35%) within 3 km, trees (57%) and water (23%) within 16 km, and trees (68%) and water (29%) 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 Surat Thani (9.1401°, 99.3331°, elevation 10 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).