Chachoengsao weather in September
In September, Chachoengsao sees average daytime highs of 32°C and overnight lows near 26°C, with 293 mm of rain across 26.9 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 1st-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 2% of the time in September, and the air most often feels miserable.
Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Chachoengsao's 9th-clearest and 11th-windiest month. For the whole year in context, see Chachoengsao's year-round climate.
- Daytime high
- 32°
- 8th warmest
- Overnight low
- 26°
- 7th coldest
- Rainfall
- 293 mm
- 26.9 wet days
- Daylight
- 12 h 06 min
- 6:08 AM – 6:12 PM
- Cloud cover
- 87%
- 9th clearest
- Wind
- 7 km/h
- 11th windiest
- Solar energy
- 4.47 kWh/m²
- Travel score
- 2.2
- out of 10
Chachoengsao is town in Chachoengsao province, Thailand.
- Air quality
- Elevated
- PM2.5 16 µg/m³ · 2019
- Founded
- 1549
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 32°C through the month.
A typical September day in Chachoengsao reaches about 32°C in the afternoon and slips back to 26°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, September runs on par with August and on par with October.
| 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 | 25 | 25 | 25 | 25 | 25 |
| 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 | 25 |
| 27 | 32 | 25 |
| 28 | 32 | 25 |
| 29 | 32 | 25 |
| 30 | 32 | 25 |
How September really feels in Chachoengsao
Once humidity and wind are folded in, September 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 September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Chachoengsao weather by month
How September compares with the rest of the year at a glance. September is the 8th-warmest and 1st-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 32° / 22° | 18 | 3.8 | 11.3 | 4.8 |
| Feb | 33° / 23° | 19 | 4.3 | 11.5 | 4.0 |
| Mar | 35° / 25° | 61 | 10.2 | 11.9 | 2.9 |
| Apr | 35° / 26° | 97 | 15.3 | 12.3 | 2.1 |
| May | 34° / 27° | 191 | 23.7 | 12.6 | 1.9 |
| Jun | 33° / 27° | 181 | 24.5 | 12.8 | 2.1 |
| Jul | 33° / 26° | 196 | 25.4 | 12.7 | 2.2 |
| Aug | 33° / 26° | 214 | 26.5 | 12.5 | 2.2 |
| Sep | 32° / 26° | 293 | 26.9 | 12.1 | 2.2 |
| Oct | 32° / 25° | 176 | 19.6 | 11.7 | 3.0 |
| Nov | 32° / 24° | 33 | 5.6 | 11.4 | 4.2 |
| Dec | 32° / 22° | 9 | 1.9 | 11.2 | 5.1 |
Cloud cover in September
The sky is clear or mostly clear about 2% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 7% of September, with mostly cloudy or overcast conditions the remaining 91%.
| 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 (%) | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 9 | 9 | 9 | 9 | 11 | 11 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 14 | 14 |
| Cloudier (%) | 94 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 92 | 91 | 91 | 91 | 91 | 89 | 89 | 88 | 88 | 88 | 88 | 87 | 87 | 87 | 86 | 86 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 6 | 94 |
| 2 | 7 | 93 |
| 3 | 7 | 93 |
| 4 | 7 | 93 |
| 5 | 7 | 93 |
| 6 | 7 | 93 |
| 7 | 7 | 93 |
| 8 | 7 | 93 |
| 9 | 7 | 93 |
| 10 | 7 | 93 |
| 11 | 7 | 93 |
| 12 | 7 | 93 |
| 13 | 7 | 93 |
| 14 | 7 | 93 |
| 15 | 8 | 92 |
| 16 | 9 | 91 |
| 17 | 9 | 91 |
| 18 | 9 | 91 |
| 19 | 9 | 91 |
| 20 | 11 | 89 |
| 21 | 11 | 89 |
| 22 | 12 | 88 |
| 23 | 12 | 88 |
| 24 | 12 | 88 |
| 25 | 12 | 88 |
| 26 | 13 | 87 |
| 27 | 13 | 87 |
| 28 | 13 | 87 |
| 29 | 14 | 86 |
| 30 | 14 | 86 |
Chance of precipitation in September
Chachoengsao gets around 293 mm of rain over 26.9 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 90% and peaks near 91% on the wettest days.
| 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 (%) | 89 | 89 | 89 | 90 | 90 | 90 | 90 | 90 | 90 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 89 |
| Rain chance (%) | |
|---|---|
| 1 | 89 |
| 2 | 89 |
| 3 | 89 |
| 4 | 90 |
| 5 | 90 |
| 6 | 90 |
| 7 | 90 |
| 8 | 90 |
| 9 | 90 |
| 10 | 91 |
| 11 | 91 |
| 12 | 91 |
| 13 | 91 |
| 14 | 91 |
| 15 | 91 |
| 16 | 91 |
| 17 | 91 |
| 18 | 91 |
| 19 | 91 |
| 20 | 91 |
| 21 | 90 |
| 22 | 90 |
| 23 | 90 |
| 24 | 90 |
| 25 | 90 |
| 26 | 90 |
| 27 | 90 |
| 28 | 90 |
| 29 | 90 |
| 30 | 89 |
Humidity in September
Most of September feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the miserable band about 95% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oppressive (%) | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 |
| Miserable (%) | 96 | 96 | 96 | 95 | 95 | 95 | 95 | 95 | 95 | 94 | 94 | 94 | 94 | 94 | 94 | 95 | 95 | 95 | 95 | 95 | 95 | 96 | 96 | 96 | 95 | 95 | 95 | 95 | 94 | 94 |
| Oppressive (%) | Miserable (%) | |
|---|---|---|
| 1 | 4 | 96 |
| 2 | 4 | 96 |
| 3 | 4 | 96 |
| 4 | 5 | 95 |
| 5 | 5 | 95 |
| 6 | 5 | 95 |
| 7 | 5 | 95 |
| 8 | 5 | 95 |
| 9 | 5 | 95 |
| 10 | 6 | 94 |
| 11 | 6 | 94 |
| 12 | 6 | 94 |
| 13 | 6 | 94 |
| 14 | 6 | 94 |
| 15 | 6 | 94 |
| 16 | 5 | 95 |
| 17 | 5 | 95 |
| 18 | 5 | 95 |
| 19 | 5 | 95 |
| 20 | 5 | 95 |
| 21 | 5 | 95 |
| 22 | 4 | 96 |
| 23 | 4 | 96 |
| 24 | 4 | 96 |
| 25 | 5 | 95 |
| 26 | 5 | 95 |
| 27 | 5 | 95 |
| 28 | 5 | 95 |
| 29 | 6 | 94 |
| 30 | 6 | 94 |
Wind in September
Winds average 7 km/h in September.
Across September, daily wind ranges from about 6 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| 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 | 8 | calm |
| 2 | 8 | calm |
| 3 | 8 | calm |
| 4 | 8 | 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 | 6 | calm |
| 20 | 6 | calm |
| 21 | 6 | calm |
| 22 | 6 | calm |
| 23 | 6 | calm |
| 24 | 6 | calm |
| 25 | 6 | calm |
| 26 | 6 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
Sunrise & sunset in September
Daylight runs from about 12 h 18 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 24 minutes over September. Sunrise moves from 6:07 AM to 6:08 AM, and sunset from 6:23 PM to 6:02 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) | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 |
| Sunrise (AM) | 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 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 |
| Sunset (PM) | 6:23 | 6:23 | 6:22 | 6:21 | 6:21 | 6:20 | 6:19 | 6:18 | 6:18 | 6:17 | 6:16 | 6:15 | 6:15 | 6:14 | 6:13 | 6:12 | 6:12 | 6:11 | 6:10 | 6:09 | 6:08 | 6:08 | 6:07 | 6:06 | 6:05 | 6:05 | 6:04 | 6:03 | 6:03 | 6:02 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.3 | 6:07 | 6:23 |
| 2 | 12.3 | 6:07 | 6:23 |
| 3 | 12.2 | 6:07 | 6:22 |
| 4 | 12.2 | 6:07 | 6:21 |
| 5 | 12.2 | 6:08 | 6:21 |
| 6 | 12.2 | 6:08 | 6:20 |
| 7 | 12.2 | 6:08 | 6:19 |
| 8 | 12.2 | 6:08 | 6:18 |
| 9 | 12.2 | 6:08 | 6:18 |
| 10 | 12.2 | 6:08 | 6:17 |
| 11 | 12.1 | 6:08 | 6:16 |
| 12 | 12.1 | 6:08 | 6:15 |
| 13 | 12.1 | 6:08 | 6:15 |
| 14 | 12.1 | 6:08 | 6:14 |
| 15 | 12.1 | 6:08 | 6:13 |
| 16 | 12.1 | 6:08 | 6:12 |
| 17 | 12.1 | 6:08 | 6:12 |
| 18 | 12.0 | 6:08 | 6:11 |
| 19 | 12.0 | 6:08 | 6:10 |
| 20 | 12.0 | 6:08 | 6:09 |
| 21 | 12.0 | 6:08 | 6:08 |
| 22 | 12.0 | 6:08 | 6:08 |
| 23 | 12.0 | 6:08 | 6:07 |
| 24 | 12.0 | 6:08 | 6:06 |
| 25 | 12.0 | 6:08 | 6:05 |
| 26 | 11.9 | 6:08 | 6:05 |
| 27 | 11.9 | 6:08 | 6:04 |
| 28 | 11.9 | 6:08 | 6:03 |
| 29 | 11.9 | 6:08 | 6:03 |
| 30 | 11.9 | 6:08 | 6:02 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.47 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 4.47 kWh/m² to a high of 6 kWh/m² in April across the year — September's 4.47 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 |
| 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 | 4.6 | Bright |
| 2 | 4.6 | Bright |
| 3 | 4.6 | Bright |
| 4 | 4.6 | Bright |
| 5 | 4.6 | Bright |
| 6 | 4.5 | Bright |
| 7 | 4.5 | Bright |
| 8 | 4.5 | Bright |
| 9 | 4.5 | Bright |
| 10 | 4.5 | Bright |
| 11 | 4.5 | Bright |
| 12 | 4.5 | Bright |
| 13 | 4.5 | Bright |
| 14 | 4.4 | Bright |
| 15 | 4.4 | Bright |
| 16 | 4.4 | Bright |
| 17 | 4.4 | Bright |
| 18 | 4.4 | Bright |
| 19 | 4.4 | Bright |
| 20 | 4.4 | Bright |
| 21 | 4.4 | Bright |
| 22 | 4.4 | Bright |
| 23 | 4.4 | Bright |
| 24 | 4.4 | Bright |
| 25 | 4.4 | Bright |
| 26 | 4.4 | Bright |
| 27 | 4.4 | Bright |
| 28 | 4.4 | Bright |
| 29 | 4.4 | Bright |
| 30 | 4.4 | Bright |
Hazard calendar for Chachoengsao
In September, Chachoengsao sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Chachoengsao sits in the Pacific typhoon belt; the season peaks July–October.
Chachoengsao's rainy season runs May–October, when most of the year's rain falls.
Is September a good time to visit Chachoengsao?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a weaker month for outdoor sightseeing in Chachoengsao.
What to pack for Chachoengsao in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Chachoengsao sees daytime highs around 32°C and nights near 26°C. Pack light clothes and rain gear. About 27 days see rain.
Sea temperature near Chachoengsao in September
The nearest coast averages about 29°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 41 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 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 31 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Warm |
UV index in Chachoengsao in September
Clear-sky midday UV in September 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 Chachoengsao peaks around August 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 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 | 9 | 12 | 12 | 13 | 12 | 10 | 9 | 9 |
| Level | Very high | Very high | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 10 | Very high |
| Mar | 12 | Extreme |
| Apr | 12 | Extreme |
| May | 9 | Very high |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Very high |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in Chachoengsao in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in Chachoengsao is worst in January — around 22 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (June, 11 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Chachoengsao's WHO annual average of 16 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 22 | 22 | 18 | 15 | 13 | 11 | 12 | 12 | 16 | 19 | 17 | 16 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 22 | Moderate |
| Feb | 22 | Moderate |
| Mar | 18 | Moderate |
| Apr | 15 | Moderate |
| May | 13 | Moderate |
| Jun | 11 | Good |
| Jul | 12 | Good |
| Aug | 12 | Good |
| Sep | 16 | Moderate |
| Oct | 19 | Moderate |
| Nov | 17 | Moderate |
| Dec | 16 | Moderate |
Where is Chachoengsao?
Chachoengsao sits at 13.7°N, 101.1°E, 4 m above sea level, in Thailand. The nearest listed city is Bang Pakong, 18 km away.
Topography around Chachoengsao
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chachoengsao.
Within 3 km, the terrain around Chachoengsao has only modest variations in elevation — a maximum elevation change of 12 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 36 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,243 m.
The land around Chachoengsao is covered by trees (37%) and artificial surfaces (36%) within 3 km, cropland (43%) and trees (23%) within 16 km, and trees (37%) and cropland (26%) 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 Chachoengsao (13.6882°, 101.0716°, elevation 4 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).