Rayong weather in April
In April, Rayong sees average daytime highs of 32°C and overnight lows near 26°C, with 133 mm of rain across 19 wet days and about 12.3 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.
Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 32% of the time in April, and the air most often feels miserable.
Daylight stretches from about 12 h 06 min at the start of April to 12 h 24 min by month's end. Set against the rest of the year, April is Rayong's 6th-clearest and 8th-windiest month. For the whole year in context, see Rayong's year-round climate.
- Daytime high
- 32°
- 1st warmest
- Overnight low
- 26°
- 9th coldest
- Rainfall
- 133 mm
- 19 wet days
- Daylight
- 12 h 18 min
- 6:07 AM – 6:24 PM
- Cloud cover
- 59%
- 6th clearest
- Wind
- 9 km/h
- 8th windiest
- Solar energy
- 5.93 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 April
Day-to-day highs hold fairly steady near 32°C through the month.
A typical April day in Rayong reaches about 32°C in the afternoon and slips back to 26°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°C. Set against its neighbours, April runs on par with March and on par with 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) | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Avg low (°C) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 32 | 26 |
| 2 | 32 | 26 |
| 3 | 32 | 26 |
| 4 | 32 | 26 |
| 5 | 32 | 26 |
| 6 | 32 | 26 |
| 7 | 32 | 26 |
| 8 | 32 | 26 |
| 9 | 32 | 26 |
| 10 | 32 | 26 |
| 11 | 32 | 26 |
| 12 | 32 | 26 |
| 13 | 32 | 26 |
| 14 | 32 | 26 |
| 15 | 32 | 26 |
| 16 | 32 | 26 |
| 17 | 32 | 26 |
| 18 | 32 | 26 |
| 19 | 32 | 26 |
| 20 | 32 | 26 |
| 21 | 32 | 26 |
| 22 | 32 | 26 |
| 23 | 32 | 26 |
| 24 | 32 | 26 |
| 25 | 32 | 26 |
| 26 | 32 | 26 |
| 27 | 32 | 26 |
| 28 | 32 | 26 |
| 29 | 32 | 26 |
| 30 | 32 | 26 |
How April really feels in Rayong
Once humidity and wind are folded in, April averages 30 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.
Rayong weather by month
How April compares with the rest of the year at a glance. April is the 1st-warmest and 7th-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 April
The sky is clear or mostly clear about 32% of the time in April.
Beyond those clear spells, partly cloudy skies cover about 17% of April, with mostly cloudy or overcast conditions the remaining 51%. 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 54 | 54 | 54 | 54 | 54 | 53 | 52 | 52 | 52 | 52 | 51 | 51 | 51 | 51 | 51 | 51 | 50 | 51 | 50 | 48 | 49 | 48 | 47 | 46 | 45 | 42 | 40 | 39 | 36 | 35 |
| Cloudier (%) | 46 | 46 | 46 | 46 | 46 | 47 | 48 | 48 | 48 | 48 | 49 | 49 | 49 | 49 | 49 | 49 | 50 | 49 | 50 | 52 | 51 | 52 | 53 | 54 | 55 | 58 | 60 | 61 | 64 | 65 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 54 | 46 |
| 2 | 54 | 46 |
| 3 | 54 | 46 |
| 4 | 54 | 46 |
| 5 | 54 | 46 |
| 6 | 53 | 47 |
| 7 | 52 | 48 |
| 8 | 52 | 48 |
| 9 | 52 | 48 |
| 10 | 52 | 48 |
| 11 | 51 | 49 |
| 12 | 51 | 49 |
| 13 | 51 | 49 |
| 14 | 51 | 49 |
| 15 | 51 | 49 |
| 16 | 51 | 49 |
| 17 | 50 | 50 |
| 18 | 51 | 49 |
| 19 | 50 | 50 |
| 20 | 48 | 52 |
| 21 | 49 | 51 |
| 22 | 48 | 52 |
| 23 | 47 | 53 |
| 24 | 46 | 54 |
| 25 | 45 | 55 |
| 26 | 42 | 58 |
| 27 | 40 | 60 |
| 28 | 39 | 61 |
| 29 | 36 | 64 |
| 30 | 35 | 65 |
Chance of precipitation in April
Rayong gets around 133 mm of rain over 19 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 64% and peaks near 75% 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 (%) | 59 | 59 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 59 | 59 | 59 | 60 | 60 | 61 | 61 | 62 | 64 | 65 | 66 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 |
| Rain chance (%) | |
|---|---|
| 1 | 59 |
| 2 | 59 |
| 3 | 60 |
| 4 | 60 |
| 5 | 60 |
| 6 | 60 |
| 7 | 60 |
| 8 | 60 |
| 9 | 60 |
| 10 | 60 |
| 11 | 60 |
| 12 | 59 |
| 13 | 59 |
| 14 | 59 |
| 15 | 60 |
| 16 | 60 |
| 17 | 61 |
| 18 | 61 |
| 19 | 62 |
| 20 | 64 |
| 21 | 65 |
| 22 | 66 |
| 23 | 68 |
| 24 | 69 |
| 25 | 70 |
| 26 | 71 |
| 27 | 72 |
| 28 | 73 |
| 29 | 74 |
| 30 | 75 |
Humidity in April
Most of April feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, April lands in the miserable band about 91% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Humid (%) | 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 | 0 | 0 | 0 | 0 | 0 |
| Muggy (%) | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Oppressive (%) | 16 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 6 | 6 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 2 | 2 |
| Miserable (%) | 81 | 82 | 84 | 84 | 85 | 85 | 87 | 87 | 87 | 88 | 88 | 88 | 89 | 89 | 90 | 90 | 91 | 92 | 93 | 94 | 94 | 95 | 96 | 96 | 96 | 97 | 97 | 97 | 98 | 98 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 1 | 2 | 16 | 81 |
| 2 | 1 | 2 | 15 | 82 |
| 3 | 1 | 1 | 14 | 84 |
| 4 | 1 | 1 | 14 | 84 |
| 5 | 1 | 1 | 13 | 85 |
| 6 | 1 | 1 | 13 | 85 |
| 7 | 0 | 1 | 12 | 87 |
| 8 | 0 | 1 | 12 | 87 |
| 9 | 0 | 1 | 12 | 87 |
| 10 | 0 | 1 | 11 | 88 |
| 11 | 0 | 1 | 11 | 88 |
| 12 | 0 | 1 | 11 | 88 |
| 13 | 0 | 1 | 10 | 89 |
| 14 | 0 | 1 | 10 | 89 |
| 15 | 0 | 1 | 9 | 90 |
| 16 | 0 | 1 | 9 | 90 |
| 17 | 0 | 1 | 8 | 91 |
| 18 | 0 | 0 | 8 | 92 |
| 19 | 0 | 0 | 7 | 93 |
| 20 | 0 | 0 | 6 | 94 |
| 21 | 0 | 0 | 6 | 94 |
| 22 | 0 | 0 | 5 | 95 |
| 23 | 0 | 0 | 4 | 96 |
| 24 | 0 | 0 | 4 | 96 |
| 25 | 0 | 0 | 4 | 96 |
| 26 | 0 | 0 | 3 | 97 |
| 27 | 0 | 0 | 3 | 97 |
| 28 | 0 | 0 | 3 | 97 |
| 29 | 0 | 0 | 2 | 98 |
| 30 | 0 | 0 | 2 | 98 |
Wind in April
Winds average 9 km/h in April.
Across April, daily wind ranges from about 9 km/h on the calmest days to 9 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) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| 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 | 9 | calm |
| 2 | 9 | calm |
| 3 | 9 | calm |
| 4 | 9 | calm |
| 5 | 9 | calm |
| 6 | 9 | calm |
| 7 | 9 | calm |
| 8 | 9 | calm |
| 9 | 9 | calm |
| 10 | 9 | calm |
| 11 | 9 | calm |
| 12 | 9 | calm |
| 13 | 9 | calm |
| 14 | 9 | calm |
| 15 | 9 | calm |
| 16 | 9 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 9 | calm |
| 28 | 9 | calm |
| 29 | 9 | calm |
| 30 | 9 | calm |
Sunrise & sunset in April
Daylight runs from about 12 h 06 min at the start of April to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 18 minutes over April. Sunrise moves from 6:16 AM to 5:59 AM, and sunset from 6:23 PM to 6:25 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) | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 |
| Sunrise (AM) | 6:16 | 6:16 | 6:15 | 6:14 | 6:14 | 6:13 | 6:12 | 6:12 | 6:11 | 6:10 | 6:10 | 6:09 | 6:09 | 6:08 | 6:07 | 6:07 | 6:06 | 6:06 | 6:05 | 6:04 | 6:04 | 6:03 | 6:03 | 6:02 | 6:02 | 6:01 | 6:01 | 6:00 | 6:00 | 5:59 |
| Sunset (PM) | 6:23 | 6:23 | 6:23 | 6:23 | 6:23 | 6:23 | 6:23 | 6:23 | 6:23 | 6:23 | 6:23 | 6:23 | 6:23 | 6:23 | 6:24 | 6:24 | 6:24 | 6:24 | 6:24 | 6:24 | 6:24 | 6:24 | 6:24 | 6:24 | 6:25 | 6:25 | 6:25 | 6:25 | 6:25 | 6:25 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.1 | 6:16 | 6:23 |
| 2 | 12.1 | 6:16 | 6:23 |
| 3 | 12.1 | 6:15 | 6:23 |
| 4 | 12.1 | 6:14 | 6:23 |
| 5 | 12.2 | 6:14 | 6:23 |
| 6 | 12.2 | 6:13 | 6:23 |
| 7 | 12.2 | 6:12 | 6:23 |
| 8 | 12.2 | 6:12 | 6:23 |
| 9 | 12.2 | 6:11 | 6:23 |
| 10 | 12.2 | 6:10 | 6:23 |
| 11 | 12.2 | 6:10 | 6:23 |
| 12 | 12.2 | 6:09 | 6:23 |
| 13 | 12.2 | 6:09 | 6:23 |
| 14 | 12.3 | 6:08 | 6:23 |
| 15 | 12.3 | 6:07 | 6:24 |
| 16 | 12.3 | 6:07 | 6:24 |
| 17 | 12.3 | 6:06 | 6:24 |
| 18 | 12.3 | 6:06 | 6:24 |
| 19 | 12.3 | 6:05 | 6:24 |
| 20 | 12.3 | 6:04 | 6:24 |
| 21 | 12.3 | 6:04 | 6:24 |
| 22 | 12.3 | 6:03 | 6:24 |
| 23 | 12.4 | 6:03 | 6:24 |
| 24 | 12.4 | 6:02 | 6:24 |
| 25 | 12.4 | 6:02 | 6:25 |
| 26 | 12.4 | 6:01 | 6:25 |
| 27 | 12.4 | 6:01 | 6:25 |
| 28 | 12.4 | 6:00 | 6:25 |
| 29 | 12.4 | 6:00 | 6:25 |
| 30 | 12.4 | 5:59 | 6:25 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 5.93 kWh/m² — the sunniest month for solar.
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 — April's 5.93 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.9 | 5.9 | 5.9 | 5.9 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.8 | 5.7 | 5.7 |
| 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 | 5.9 | Bright |
| 2 | 5.9 | Bright |
| 3 | 5.9 | Bright |
| 4 | 5.9 | Bright |
| 5 | 6.0 | Bright |
| 6 | 6.0 | Bright |
| 7 | 6.0 | Bright |
| 8 | 6.0 | Bright |
| 9 | 6.0 | Bright |
| 10 | 6.0 | Bright |
| 11 | 6.0 | Bright |
| 12 | 6.0 | Bright |
| 13 | 6.0 | Bright |
| 14 | 6.0 | Bright |
| 15 | 6.0 | Bright |
| 16 | 6.0 | Bright |
| 17 | 6.0 | Bright |
| 18 | 6.0 | 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 | 5.8 | Bright |
| 26 | 5.8 | Bright |
| 27 | 5.8 | Bright |
| 28 | 5.8 | Bright |
| 29 | 5.7 | Bright |
| 30 | 5.7 | Bright |
Hazard calendar for Rayong
In April, Rayong sits inside its pacific typhoon 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 April a good time to visit Rayong?
Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
April is a weaker month for outdoor sightseeing in Rayong.
What to pack for Rayong in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, Rayong sees daytime highs around 32°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.
Sea temperature near Rayong in April
The nearest coast averages about 30°C in April — 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 April
Clear-sky midday UV in April 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 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 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 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).