Ratchaburi weather in April
In April, Ratchaburi sees average daytime highs of 36°C and overnight lows near 27°C, with 68 mm of rain across 11.2 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 36°C through the month. The sky is clear or mostly clear about 35% of the time in April, and the air most often feels oppressive.
Daylight stretches from about 12 h 06 min at the start of April to 12 h 30 min by month's end. Set against the rest of the year, April is Ratchaburi's 6th-clearest and 9th-windiest month. For the whole year in context, see Ratchaburi's year-round climate.
- Daytime high
- 36°
- 1st warmest
- Overnight low
- 27°
- 11th coldest
- Rainfall
- 68 mm
- 11.2 wet days
- Daylight
- 12 h 18 min
- 6:12 AM – 6:30 PM
- Cloud cover
- 55%
- 6th clearest
- Wind
- 7 km/h
- 9th windiest
- Solar energy
- 6.21 kWh/m²
- Travel score
- 1.9
- out of 10
Ratchaburi is town in Ratchaburi province, Thailand.
- Air quality
- High
- PM2.5 30 µg/m³ · 2019
- Density
- 10,626/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in April
Day-to-day highs hold fairly steady near 36°C through the month.
A typical April day in Ratchaburi reaches about 36°C in the afternoon and slips back to 27°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 38°C. Set against its neighbours, April runs about 1°C warmer than March and about 1°C warmer than 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) | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 |
| Avg low (°C) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 36 | 26 |
| 2 | 36 | 26 |
| 3 | 36 | 26 |
| 4 | 36 | 26 |
| 5 | 36 | 26 |
| 6 | 36 | 26 |
| 7 | 36 | 26 |
| 8 | 36 | 26 |
| 9 | 36 | 26 |
| 10 | 36 | 26 |
| 11 | 36 | 26 |
| 12 | 36 | 26 |
| 13 | 36 | 26 |
| 14 | 36 | 27 |
| 15 | 36 | 27 |
| 16 | 36 | 27 |
| 17 | 36 | 27 |
| 18 | 36 | 27 |
| 19 | 36 | 27 |
| 20 | 36 | 27 |
| 21 | 36 | 27 |
| 22 | 36 | 27 |
| 23 | 36 | 27 |
| 24 | 36 | 27 |
| 25 | 36 | 27 |
| 26 | 36 | 27 |
| 27 | 36 | 27 |
| 28 | 36 | 27 |
| 29 | 36 | 27 |
| 30 | 36 | 27 |
How April really feels in Ratchaburi
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.
Ratchaburi 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° / 22° | 12 | 2.2 | 11.3 | 5.3 |
| Feb | 33° / 23° | 10 | 2.4 | 11.5 | 4.2 |
| Mar | 35° / 25° | 37 | 6.4 | 11.9 | 3.0 |
| Apr | 36° / 27° | 68 | 11.2 | 12.3 | 1.9 |
| May | 35° / 27° | 127 | 21.9 | 12.6 | 1.7 |
| Jun | 34° / 27° | 114 | 20.5 | 12.8 | 2.1 |
| Jul | 33° / 26° | 133 | 22.1 | 12.7 | 2.3 |
| Aug | 33° / 26° | 143 | 23.1 | 12.4 | 2.4 |
| Sep | 32° / 26° | 197 | 24.1 | 12.1 | 2.3 |
| Oct | 32° / 25° | 188 | 21.1 | 11.7 | 3.2 |
| Nov | 31° / 24° | 45 | 6.4 | 11.4 | 4.6 |
| Dec | 31° / 22° | 10 | 2.2 | 11.2 | 5.5 |
Cloud cover in April
The sky is clear or mostly clear about 35% of the time in April.
Beyond those clear spells, partly cloudy skies cover about 20% of April, with mostly cloudy or overcast conditions the remaining 45%. 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 (%) | 61 | 62 | 62 | 61 | 60 | 59 | 59 | 58 | 57 | 57 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 55 | 55 | 55 | 54 | 54 | 53 | 52 | 51 | 49 | 48 | 46 | 45 |
| Cloudier (%) | 39 | 38 | 38 | 39 | 40 | 41 | 41 | 42 | 43 | 43 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 45 | 45 | 45 | 46 | 46 | 47 | 48 | 49 | 51 | 52 | 54 | 55 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 61 | 39 |
| 2 | 62 | 38 |
| 3 | 62 | 38 |
| 4 | 61 | 39 |
| 5 | 60 | 40 |
| 6 | 59 | 41 |
| 7 | 59 | 41 |
| 8 | 58 | 42 |
| 9 | 57 | 43 |
| 10 | 57 | 43 |
| 11 | 56 | 44 |
| 12 | 56 | 44 |
| 13 | 56 | 44 |
| 14 | 56 | 44 |
| 15 | 56 | 44 |
| 16 | 56 | 44 |
| 17 | 56 | 44 |
| 18 | 56 | 44 |
| 19 | 55 | 45 |
| 20 | 55 | 45 |
| 21 | 55 | 45 |
| 22 | 54 | 46 |
| 23 | 54 | 46 |
| 24 | 53 | 47 |
| 25 | 52 | 48 |
| 26 | 51 | 49 |
| 27 | 49 | 51 |
| 28 | 48 | 52 |
| 29 | 46 | 54 |
| 30 | 45 | 55 |
Chance of precipitation in April
Ratchaburi gets around 68 mm of rain over 11.2 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 38% and peaks near 53% 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 (%) | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 33 | 33 | 33 | 33 | 34 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 42 | 43 | 44 | 45 | 47 | 48 | 50 | 51 | 53 |
| Rain chance (%) | |
|---|---|
| 1 | 32 |
| 2 | 32 |
| 3 | 32 |
| 4 | 32 |
| 5 | 32 |
| 6 | 32 |
| 7 | 32 |
| 8 | 32 |
| 9 | 32 |
| 10 | 33 |
| 11 | 33 |
| 12 | 33 |
| 13 | 33 |
| 14 | 34 |
| 15 | 34 |
| 16 | 35 |
| 17 | 36 |
| 18 | 37 |
| 19 | 38 |
| 20 | 39 |
| 21 | 40 |
| 22 | 42 |
| 23 | 43 |
| 24 | 44 |
| 25 | 45 |
| 26 | 47 |
| 27 | 48 |
| 28 | 50 |
| 29 | 51 |
| 30 | 53 |
Humidity in April
Most of April feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, April lands in the oppressive band about 67% 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 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Muggy (%) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 1 |
| Oppressive (%) | 79 | 78 | 78 | 77 | 76 | 75 | 74 | 72 | 72 | 71 | 70 | 69 | 69 | 69 | 68 | 67 | 67 | 66 | 66 | 65 | 64 | 64 | 63 | 62 | 61 | 59 | 58 | 56 | 54 | 53 |
| Miserable (%) | 14 | 15 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 36 | 37 | 39 | 40 | 42 | 44 | 46 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 1 | 6 | 79 | 14 |
| 2 | 1 | 6 | 78 | 15 |
| 3 | 1 | 6 | 78 | 15 |
| 4 | 1 | 6 | 77 | 16 |
| 5 | 1 | 6 | 76 | 17 |
| 6 | 1 | 6 | 75 | 18 |
| 7 | 1 | 6 | 74 | 19 |
| 8 | 1 | 7 | 72 | 20 |
| 9 | 0 | 7 | 72 | 21 |
| 10 | 0 | 7 | 71 | 22 |
| 11 | 0 | 7 | 70 | 23 |
| 12 | 0 | 7 | 69 | 24 |
| 13 | 0 | 6 | 69 | 25 |
| 14 | 0 | 6 | 69 | 25 |
| 15 | 0 | 6 | 68 | 26 |
| 16 | 0 | 6 | 67 | 27 |
| 17 | 0 | 5 | 67 | 28 |
| 18 | 0 | 5 | 66 | 29 |
| 19 | 0 | 4 | 66 | 30 |
| 20 | 0 | 4 | 65 | 31 |
| 21 | 0 | 4 | 64 | 32 |
| 22 | 0 | 3 | 64 | 33 |
| 23 | 0 | 3 | 63 | 34 |
| 24 | 0 | 2 | 62 | 36 |
| 25 | 0 | 2 | 61 | 37 |
| 26 | 0 | 2 | 59 | 39 |
| 27 | 0 | 2 | 58 | 40 |
| 28 | 0 | 2 | 56 | 42 |
| 29 | 0 | 2 | 54 | 44 |
| 30 | 0 | 1 | 53 | 46 |
Wind in April
Winds average 7 km/h in April.
Across April, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 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 | 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 |
Sunrise & sunset in April
Daylight runs from about 12 h 06 min at the start of April to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 24 minutes over April. Sunrise moves from 6:22 AM to 6:04 AM, and sunset from 6:29 PM to 6:32 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 | 12.2 | 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 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.5 | 12.5 |
| Sunrise (AM) | 6:22 | 6:21 | 6:21 | 6:20 | 6:19 | 6:19 | 6:18 | 6:17 | 6:16 | 6:16 | 6:15 | 6:14 | 6:14 | 6:13 | 6:13 | 6:12 | 6:11 | 6:11 | 6:10 | 6:09 | 6:09 | 6:08 | 6:08 | 6:07 | 6:07 | 6:06 | 6:06 | 6:05 | 6:05 | 6:04 |
| Sunset (PM) | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:30 | 6:30 | 6:30 | 6:30 | 6:30 | 6:30 | 6:30 | 6:30 | 6:30 | 6:30 | 6:31 | 6:31 | 6:31 | 6:31 | 6:31 | 6:31 | 6:32 | 6:32 | 6:32 | 6:32 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.1 | 6:22 | 6:29 |
| 2 | 12.1 | 6:21 | 6:29 |
| 3 | 12.1 | 6:21 | 6:29 |
| 4 | 12.2 | 6:20 | 6:29 |
| 5 | 12.2 | 6:19 | 6:29 |
| 6 | 12.2 | 6:19 | 6:29 |
| 7 | 12.2 | 6:18 | 6:29 |
| 8 | 12.2 | 6:17 | 6:29 |
| 9 | 12.2 | 6:16 | 6:29 |
| 10 | 12.2 | 6:16 | 6:29 |
| 11 | 12.2 | 6:15 | 6:30 |
| 12 | 12.3 | 6:14 | 6:30 |
| 13 | 12.3 | 6:14 | 6:30 |
| 14 | 12.3 | 6:13 | 6:30 |
| 15 | 12.3 | 6:13 | 6:30 |
| 16 | 12.3 | 6:12 | 6:30 |
| 17 | 12.3 | 6:11 | 6:30 |
| 18 | 12.3 | 6:11 | 6:30 |
| 19 | 12.3 | 6:10 | 6:30 |
| 20 | 12.4 | 6:09 | 6:30 |
| 21 | 12.4 | 6:09 | 6:31 |
| 22 | 12.4 | 6:08 | 6:31 |
| 23 | 12.4 | 6:08 | 6:31 |
| 24 | 12.4 | 6:07 | 6:31 |
| 25 | 12.4 | 6:07 | 6:31 |
| 26 | 12.4 | 6:06 | 6:31 |
| 27 | 12.4 | 6:06 | 6:32 |
| 28 | 12.4 | 6:05 | 6:32 |
| 29 | 12.5 | 6:05 | 6:32 |
| 30 | 12.5 | 6:04 | 6:32 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 6.21 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 4.41 kWh/m² to a high of 6.21 kWh/m² in April across the year — April's 6.21 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) | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.1 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 | 6.0 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.2 | Intense |
| 2 | 6.2 | Intense |
| 3 | 6.2 | Intense |
| 4 | 6.2 | Intense |
| 5 | 6.2 | Intense |
| 6 | 6.3 | Intense |
| 7 | 6.3 | Intense |
| 8 | 6.3 | Intense |
| 9 | 6.3 | Intense |
| 10 | 6.3 | Intense |
| 11 | 6.3 | Intense |
| 12 | 6.3 | Intense |
| 13 | 6.3 | Intense |
| 14 | 6.3 | Intense |
| 15 | 6.3 | Intense |
| 16 | 6.3 | Intense |
| 17 | 6.3 | Intense |
| 18 | 6.2 | Intense |
| 19 | 6.2 | Intense |
| 20 | 6.2 | Intense |
| 21 | 6.2 | Intense |
| 22 | 6.2 | Intense |
| 23 | 6.2 | Intense |
| 24 | 6.1 | Intense |
| 25 | 6.1 | Intense |
| 26 | 6.1 | Intense |
| 27 | 6.0 | Intense |
| 28 | 6.0 | Intense |
| 29 | 6.0 | Bright |
| 30 | 6.0 | Bright |
Hazard calendar for Ratchaburi
In April, Ratchaburi sits inside its cyclone season. The full year is below, with each hazard's peak months called out.
Ratchaburi sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.
Ratchaburi's monsoon runs May–October, when most of the year's rain falls.
Is April a good time to visit Ratchaburi?
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 Ratchaburi.
What to pack for Ratchaburi in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, Ratchaburi sees daytime highs around 36°C and nights near 27°C. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.
Sea temperature near Ratchaburi 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 38 km away) is warmest in May at about 31°C and coldest in January near 27°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) | 27 | 28 | 29 | 30 | 31 | 30 | 30 | 30 | 30 | 29 | 29 | 28 |
| Comfort | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 28 | Warm |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 31 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Warm |
UV index in Ratchaburi in April
Clear-sky midday UV in April peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Ratchaburi peaks around August 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 20 at about 8 (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 | 9 | 12 | 11 | 11 | 12 | 12 | 13 | 12 | 10 | 8 | 9 |
| Level | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 9 | Very high |
| Mar | 12 | Extreme |
| Apr | 11 | Extreme |
| May | 11 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Very high |
| Nov | 8 | Very high |
| Dec | 9 | Very high |
Air quality in Ratchaburi 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 Ratchaburi is worst in February — around 44 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (August, 17 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Ratchaburi's WHO annual average of 30 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 42 | 44 | 43 | 33 | 23 | 17 | 17 | 17 | 21 | 33 | 35 | 34 |
| Level | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 42 | Poor |
| Feb | 44 | Poor |
| Mar | 43 | Poor |
| Apr | 33 | Moderate |
| May | 23 | Moderate |
| Jun | 17 | Moderate |
| Jul | 17 | Moderate |
| Aug | 17 | Moderate |
| Sep | 21 | Moderate |
| Oct | 33 | Moderate |
| Nov | 35 | Moderate |
| Dec | 34 | Moderate |
Where is Ratchaburi?
Ratchaburi sits at 13.5°N, 99.8°E, 8 m above sea level, in Thailand. The nearest listed city is Damnoen Saduak, 15 km away.
Topography around Ratchaburi
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ratchaburi.
Within 3 km, the terrain around Ratchaburi has only modest variations in elevation — a maximum elevation change of 43 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 231 m; within 80 km, large variations in elevation — a maximum elevation change of 1,189 m.
The land around Ratchaburi is covered by artificial surfaces (47%) and trees (27%) within 3 km, trees (50%) and cropland (29%) within 16 km, and trees (44%) and cropland (25%) 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 Ratchaburi (13.5367°, 99.8171°, elevation 8 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).