Rayong weather in October
In October, Rayong sees average daytime highs of 31°C and overnight lows near 25°C, with 256 mm of rain across 23.2 wet days and about 11.7 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.
Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 9% of the time in October, and the air most often feels miserable.
Daylight stretches from about 11 h 54 min at the start of October to 11 h 36 min by month's end. Set against the rest of the year, October is Rayong's 7th-clearest and 12th-windiest month. For the whole year in context, see Rayong's year-round climate.
- Daytime high
- 31°
- 11th warmest
- Overnight low
- 25°
- 5th coldest
- Rainfall
- 256 mm
- 23.2 wet days
- Daylight
- 11 h 42 min
- 6:09 AM – 5:51 PM
- Cloud cover
- 78%
- 7th clearest
- Wind
- 7 km/h
- 12th windiest
- Solar energy
- 4.58 kWh/m²
- Travel score
- 3.1
- out of 10
Rayong is city in Rayong province, Thailand.
- Air quality
- Elevated
- PM2.5 19.2 µg/m³ · 2019
- Density
- 6,297/km²
- people per km²
- Founded
- 1917
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in October
Day-to-day highs hold fairly steady near 31°C through the month.
A typical October day in Rayong reaches about 31°C in the afternoon and slips back to 25°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, October runs on par with September and on par with November.
| 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) | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 |
| Avg low (°C) | 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 | 25 | 25 | 25 | 25 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 31 | 25 |
| 2 | 31 | 25 |
| 3 | 31 | 25 |
| 4 | 31 | 25 |
| 5 | 31 | 25 |
| 6 | 31 | 25 |
| 7 | 31 | 25 |
| 8 | 31 | 25 |
| 9 | 31 | 25 |
| 10 | 31 | 25 |
| 11 | 31 | 25 |
| 12 | 31 | 25 |
| 13 | 31 | 25 |
| 14 | 31 | 25 |
| 15 | 31 | 25 |
| 16 | 31 | 25 |
| 17 | 31 | 25 |
| 18 | 31 | 25 |
| 19 | 31 | 25 |
| 20 | 31 | 25 |
| 21 | 31 | 25 |
| 22 | 31 | 25 |
| 23 | 31 | 25 |
| 24 | 31 | 25 |
| 25 | 31 | 25 |
| 26 | 31 | 25 |
| 27 | 31 | 25 |
| 28 | 31 | 25 |
| 29 | 31 | 25 |
| 30 | 31 | 25 |
| 31 | 31 | 25 |
How October really feels in Rayong
Once humidity and wind are folded in, October 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 October is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Rayong weather by month
How October compares with the rest of the year at a glance. October is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 23° | 28 | 6 | 11.3 | 5.1 |
| Feb | 31° / 24° | 32 | 6.9 | 11.6 | 4.8 |
| Mar | 32° / 25° | 81 | 14.2 | 11.9 | 4.0 |
| Apr | 32° / 26° | 133 | 19 | 12.3 | 3.1 |
| May | 32° / 26° | 220 | 25 | 12.6 | 2.6 |
| Jun | 31° / 26° | 210 | 24.5 | 12.7 | 2.7 |
| Jul | 31° / 26° | 206 | 25 | 12.7 | 2.8 |
| Aug | 31° / 26° | 196 | 24.9 | 12.4 | 2.8 |
| Sep | 31° / 26° | 301 | 26.4 | 12.1 | 2.6 |
| Oct | 31° / 25° | 256 | 23.2 | 11.7 | 3.1 |
| Nov | 31° / 24° | 59 | 8.6 | 11.4 | 4.5 |
| Dec | 31° / 23° | 17 | 3.4 | 11.3 | 5.3 |
Cloud cover in October
The sky is clear or mostly clear about 9% of the time in October.
Beyond those clear spells, partly cloudy skies cover about 12% of October, with mostly cloudy or overcast conditions the remaining 79%. 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 (%) | 7 | 7 | 7 | 8 | 8 | 8 | 10 | 10 | 11 | 12 | 13 | 14 | 15 | 17 | 18 | 19 | 20 | 21 | 24 | 25 | 27 | 28 | 29 | 31 | 32 | 34 | 35 | 37 | 38 | 40 | 41 |
| Cloudier (%) | 93 | 93 | 93 | 92 | 92 | 92 | 90 | 90 | 89 | 88 | 87 | 86 | 85 | 83 | 82 | 81 | 80 | 79 | 76 | 75 | 73 | 72 | 71 | 69 | 68 | 66 | 65 | 63 | 62 | 60 | 59 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 7 | 93 |
| 2 | 7 | 93 |
| 3 | 7 | 93 |
| 4 | 8 | 92 |
| 5 | 8 | 92 |
| 6 | 8 | 92 |
| 7 | 10 | 90 |
| 8 | 10 | 90 |
| 9 | 11 | 89 |
| 10 | 12 | 88 |
| 11 | 13 | 87 |
| 12 | 14 | 86 |
| 13 | 15 | 85 |
| 14 | 17 | 83 |
| 15 | 18 | 82 |
| 16 | 19 | 81 |
| 17 | 20 | 80 |
| 18 | 21 | 79 |
| 19 | 24 | 76 |
| 20 | 25 | 75 |
| 21 | 27 | 73 |
| 22 | 28 | 72 |
| 23 | 29 | 71 |
| 24 | 31 | 69 |
| 25 | 32 | 68 |
| 26 | 34 | 66 |
| 27 | 35 | 65 |
| 28 | 37 | 63 |
| 29 | 38 | 62 |
| 30 | 40 | 60 |
| 31 | 41 | 59 |
Chance of precipitation in October
Rayong gets around 256 mm of rain over 23.2 wet days in October. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 74% and peaks near 92% 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 (%) | 92 | 92 | 92 | 91 | 91 | 90 | 89 | 89 | 87 | 86 | 85 | 83 | 82 | 80 | 78 | 77 | 75 | 73 | 71 | 69 | 67 | 65 | 62 | 60 | 57 | 55 | 53 | 50 | 48 | 46 | 44 |
| Rain chance (%) | |
|---|---|
| 1 | 92 |
| 2 | 92 |
| 3 | 92 |
| 4 | 91 |
| 5 | 91 |
| 6 | 90 |
| 7 | 89 |
| 8 | 89 |
| 9 | 87 |
| 10 | 86 |
| 11 | 85 |
| 12 | 83 |
| 13 | 82 |
| 14 | 80 |
| 15 | 78 |
| 16 | 77 |
| 17 | 75 |
| 18 | 73 |
| 19 | 71 |
| 20 | 69 |
| 21 | 67 |
| 22 | 65 |
| 23 | 62 |
| 24 | 60 |
| 25 | 57 |
| 26 | 55 |
| 27 | 53 |
| 28 | 50 |
| 29 | 48 |
| 30 | 46 |
| 31 | 44 |
Humidity in October
Most of October feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, October lands in the miserable band about 72% 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 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 4 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 11 | 12 | 14 | 15 | 17 |
| Oppressive (%) | 7 | 7 | 7 | 8 | 9 | 9 | 10 | 12 | 13 | 14 | 15 | 17 | 19 | 20 | 22 | 24 | 25 | 27 | 28 | 29 | 31 | 32 | 33 | 34 | 34 | 35 | 35 | 36 | 36 | 36 | 37 |
| Miserable (%) | 93 | 93 | 93 | 92 | 91 | 90 | 89 | 87 | 86 | 85 | 84 | 82 | 80 | 79 | 77 | 73 | 72 | 70 | 68 | 67 | 64 | 61 | 59 | 57 | 55 | 53 | 51 | 48 | 46 | 44 | 42 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 0 | 0 | 7 | 93 |
| 2 | 0 | 0 | 7 | 93 |
| 3 | 0 | 0 | 7 | 93 |
| 4 | 0 | 0 | 8 | 92 |
| 5 | 0 | 0 | 9 | 91 |
| 6 | 0 | 1 | 9 | 90 |
| 7 | 0 | 1 | 10 | 89 |
| 8 | 0 | 1 | 12 | 87 |
| 9 | 0 | 1 | 13 | 86 |
| 10 | 0 | 1 | 14 | 85 |
| 11 | 0 | 1 | 15 | 84 |
| 12 | 0 | 1 | 17 | 82 |
| 13 | 0 | 1 | 19 | 80 |
| 14 | 0 | 1 | 20 | 79 |
| 15 | 0 | 1 | 22 | 77 |
| 16 | 1 | 2 | 24 | 73 |
| 17 | 1 | 2 | 25 | 72 |
| 18 | 1 | 2 | 27 | 70 |
| 19 | 1 | 3 | 28 | 68 |
| 20 | 1 | 3 | 29 | 67 |
| 21 | 1 | 4 | 31 | 64 |
| 22 | 2 | 5 | 32 | 61 |
| 23 | 2 | 6 | 33 | 59 |
| 24 | 2 | 7 | 34 | 57 |
| 25 | 3 | 8 | 34 | 55 |
| 26 | 3 | 9 | 35 | 53 |
| 27 | 3 | 11 | 35 | 51 |
| 28 | 4 | 12 | 36 | 48 |
| 29 | 4 | 14 | 36 | 46 |
| 30 | 4 | 15 | 36 | 44 |
| 31 | 4 | 17 | 37 | 42 |
Wind in October
Winds average 7 km/h in October, the calmest month.
Across October, daily wind ranges from about 7 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 | 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 | 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 | 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 | 8 | calm |
| 24 | 8 | calm |
| 25 | 8 | calm |
| 26 | 8 | calm |
| 27 | 8 | calm |
| 28 | 8 | calm |
| 29 | 8 | calm |
| 30 | 8 | calm |
| 31 | 8 | calm |
Sunrise & sunset in October
Daylight runs from about 11 h 54 min at the start of October to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 18 minutes over October. Sunrise moves from 6:07 AM to 6:12 AM, and sunset from 6:01 PM to 5:45 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) | 11.9 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 |
| Sunrise (AM) | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 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 | 6:10 | 6:11 | 6:11 | 6:11 | 6:11 | 6:12 | 6:12 |
| Sunset (PM) | 6:01 | 6:00 | 5:59 | 5:59 | 5:58 | 5:57 | 5:57 | 5:56 | 5:55 | 5:55 | 5:54 | 5:54 | 5:53 | 5:52 | 5:52 | 5:51 | 5:51 | 5:50 | 5:50 | 5:49 | 5:49 | 5:48 | 5:48 | 5:48 | 5:47 | 5:47 | 5:46 | 5:46 | 5:46 | 5:45 | 5:45 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.9 | 6:07 | 6:01 |
| 2 | 11.9 | 6:07 | 6:00 |
| 3 | 11.9 | 6:07 | 5:59 |
| 4 | 11.9 | 6:07 | 5:59 |
| 5 | 11.8 | 6:07 | 5:58 |
| 6 | 11.8 | 6:08 | 5:57 |
| 7 | 11.8 | 6:08 | 5:57 |
| 8 | 11.8 | 6:08 | 5:56 |
| 9 | 11.8 | 6:08 | 5:55 |
| 10 | 11.8 | 6:08 | 5:55 |
| 11 | 11.8 | 6:08 | 5:54 |
| 12 | 11.8 | 6:08 | 5:54 |
| 13 | 11.7 | 6:08 | 5:53 |
| 14 | 11.7 | 6:08 | 5:52 |
| 15 | 11.7 | 6:08 | 5:52 |
| 16 | 11.7 | 6:09 | 5:51 |
| 17 | 11.7 | 6:09 | 5:51 |
| 18 | 11.7 | 6:09 | 5:50 |
| 19 | 11.7 | 6:09 | 5:50 |
| 20 | 11.7 | 6:09 | 5:49 |
| 21 | 11.7 | 6:10 | 5:49 |
| 22 | 11.6 | 6:10 | 5:48 |
| 23 | 11.6 | 6:10 | 5:48 |
| 24 | 11.6 | 6:10 | 5:48 |
| 25 | 11.6 | 6:10 | 5:47 |
| 26 | 11.6 | 6:11 | 5:47 |
| 27 | 11.6 | 6:11 | 5:46 |
| 28 | 11.6 | 6:11 | 5:46 |
| 29 | 11.6 | 6:11 | 5:46 |
| 30 | 11.6 | 6:12 | 5:45 |
| 31 | 11.6 | 6:12 | 5:45 |
Solar energy in October
Average shortwave solar energy reaching the ground each day in October, about 4.58 kWh/m².
For context, solar energy here swings from a low near 4.49 kWh/m² to a high of 5.93 kWh/m² in April across the year — October's 4.58 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) | 4.3 | 4.3 | 4.3 | 4.3 | 4.4 | 4.4 | 4.4 | 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 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 | 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 | 4.3 | Bright |
| 2 | 4.3 | Bright |
| 3 | 4.3 | Bright |
| 4 | 4.3 | Bright |
| 5 | 4.4 | Bright |
| 6 | 4.4 | Bright |
| 7 | 4.4 | Bright |
| 8 | 4.4 | Bright |
| 9 | 4.4 | Bright |
| 10 | 4.5 | Bright |
| 11 | 4.5 | Bright |
| 12 | 4.5 | Bright |
| 13 | 4.5 | Bright |
| 14 | 4.6 | Bright |
| 15 | 4.6 | Bright |
| 16 | 4.6 | Bright |
| 17 | 4.6 | Bright |
| 18 | 4.7 | Bright |
| 19 | 4.7 | Bright |
| 20 | 4.7 | Bright |
| 21 | 4.7 | Bright |
| 22 | 4.8 | Bright |
| 23 | 4.8 | Bright |
| 24 | 4.8 | Bright |
| 25 | 4.8 | Bright |
| 26 | 4.8 | Bright |
| 27 | 4.8 | Bright |
| 28 | 4.9 | Bright |
| 29 | 4.9 | Bright |
| 30 | 4.9 | Bright |
| 31 | 4.9 | Bright |
Hazard calendar for Rayong
In October, Rayong sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Rayong sits in the Pacific typhoon belt; the season peaks July–October.
Rayong's rainy season runs May–October, when most of the year's rain falls.
Is October a good time to visit Rayong?
Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
October is a weaker month for outdoor sightseeing in Rayong.
What to pack for Rayong in October
From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In October, Rayong sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.
Sea temperature near Rayong in October
The nearest coast averages about 29°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 14 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 | 29 | 29 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Warm |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 31 | Tropical |
| Jun | 30 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Tropical |
UV index in Rayong in October
Clear-sky midday UV in October 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 Rayong peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 9 (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) | 9 | 10 | 12 | 12 | 12 | 12 | 12 | 14 | 12 | 10 | 9 | 9 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 10 | Extreme |
| Mar | 12 | Extreme |
| Apr | 12 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 14 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Extreme |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in Rayong in October
Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.
Air quality in Rayong is worst in January — around 28 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (June, 12 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Rayong's WHO annual average of 19.2 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 28 | 28 | 21 | 19 | 15 | 12 | 13 | 12 | 15 | 22 | 22 | 21 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 28 | Moderate |
| Feb | 28 | Moderate |
| Mar | 21 | Moderate |
| Apr | 19 | Moderate |
| May | 15 | Moderate |
| Jun | 12 | Moderate |
| Jul | 13 | Moderate |
| Aug | 12 | Moderate |
| Sep | 15 | Moderate |
| Oct | 22 | Moderate |
| Nov | 22 | Moderate |
| Dec | 21 | Moderate |
Where is Rayong?
Rayong sits at 12.7°N, 101.3°E, 7 m above sea level, in Thailand. The nearest listed city is Ban Phe, 20 km away.
Topography around Rayong
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rayong.
Within 3 km, the terrain around Rayong has only modest variations in elevation — a maximum elevation change of 32 m around an average of 7 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 334 m; within 80 km, large variations in elevation — a maximum elevation change of 1,083 m.
The land around Rayong is covered by artificial surfaces (50%) and trees (25%) within 3 km, water (38%) and trees (35%) within 16 km, and water (47%) and trees (40%) 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 Rayong (12.6809°, 101.258°, elevation 7 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).