Kanchanaburi weather in September

In September, Kanchanaburi sees average daytime highs of 32°C and overnight lows near 25°C, with 182 mm of rain across 22.8 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 3% of the time in September, and the air most often feels oppressive.

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 Kanchanaburi's 9th-clearest and 7th-windiest month. For the whole year in context, see Kanchanaburi's year-round climate.

Daytime high: 32°; 8th warmest
Overnight low: 25°; 7th coldest
Rainfall: 182 mm; 22.8 wet days
Daylight: 12 h 06 min; 6:14 AM – 6:18 PM
Cloud cover: 85%; 9th clearest
Wind: 7 km/h; 7th windiest
Solar energy: 4.44 kWh/m²
Travel score: 2.5; out of 10

Kanchanaburi is town in Kanchanaburi province, Thailand.

Air quality: High; PM2.5 27 µg/m³ · 2019

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← August Kanchanaburi year-round climate October →Best places to visit in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical September day in Kanchanaburi reaches about 32°C in the afternoon and slips back to 25°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 35°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)	33	33	33	33	33	33	33	33	33	33	33	33	33	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32	32
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

	Avg high (°C)	Avg low (°C)
1	33	25
2	33	25
3	33	25
4	33	25
5	33	25
6	33	25
7	33	25
8	33	25
9	33	25
10	33	25
11	33	25
12	33	25
13	33	25
14	32	25
15	32	25
16	32	25
17	32	25
18	32	25
19	32	25
20	32	25
21	32	25
22	32	25
23	32	25
24	32	25
25	32	25
26	32	25
27	32	25
28	32	25
29	32	25
30	32	25

How September really feels in Kanchanaburi

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.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Kanchanaburi 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° / 21°	13	2.1	11.3	4.7
Feb	35° / 22°	11	2.4	11.5	3.4
Mar	36° / 25°	33	6.3	11.9	2.0
Apr	37° / 26°	71	12.6	12.3	1.3
May	36° / 27°	112	19.9	12.6	1.6
Jun	34° / 26°	109	19.1	12.8	2.1
Jul	33° / 26°	140	20.9	12.7	2.4
Aug	33° / 26°	137	21.1	12.5	2.6
Sep	32° / 25°	182	22.8	12.1	2.5
Oct	32° / 25°	164	19.7	11.7	3.2
Nov	32° / 23°	37	6	11.4	4.4
Dec	31° / 22°	8	1.7	11.2	5.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 6% of September, with mostly cloudy or overcast conditions the remaining 90%.

	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 (%)	7	7	6	6	6	6	6	6	6	7	7	7	7	8	9	9	9	9	11	12	12	12	14	14	14	15	15	15	16	16
Cloudier (%)	93	93	94	94	94	94	94	94	94	93	93	93	93	92	91	91	91	91	89	88	88	88	86	86	86	85	85	85	84	84

	Clearer (%)	Cloudier (%)
1	7	93
2	7	93
3	6	94
4	6	94
5	6	94
6	6	94
7	6	94
8	6	94
9	6	94
10	7	93
11	7	93
12	7	93
13	7	93
14	8	92
15	9	91
16	9	91
17	9	91
18	9	91
19	11	89
20	12	88
21	12	88
22	12	88
23	14	86
24	14	86
25	14	86
26	15	85
27	15	85
28	15	85
29	16	84
30	16	84

Chance of precipitation in September

Any precipitation

Kanchanaburi gets around 182 mm of rain over 22.8 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 77% and peaks near 80% 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 (%)	72	72	73	73	74	74	75	75	75	76	76	76	77	77	77	78	78	78	78	78	78	78	78	78	79	79	79	80	80	80

	Rain chance (%)
1	72
2	72
3	73
4	73
5	74
6	74
7	75
8	75
9	75
10	76
11	76
12	76
13	77
14	77
15	77
16	78
17	78
18	78
19	78
20	78
21	78
22	78
23	78
24	78
25	79
26	79
27	79
28	80
29	80
30	80

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the oppressive band about 54% 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 (%)	72	72	71	71	70	69	68	66	65	64	62	61	59	57	55	54	52	49	48	46	44	43	41	40	39	38	37	36	36	35
Miserable (%)	28	28	29	29	30	31	32	34	35	36	38	39	41	43	45	46	48	51	52	54	56	57	59	60	61	62	63	64	64	65

	Oppressive (%)	Miserable (%)
1	72	28
2	72	28
3	71	29
4	71	29
5	70	30
6	69	31
7	68	32
8	66	34
9	65	35
10	64	36
11	62	38
12	61	39
13	59	41
14	57	43
15	55	45
16	54	46
17	52	48
18	49	51
19	48	52
20	46	54
21	44	56
22	43	57
23	41	59
24	40	60
25	39	61
26	38	62
27	37	63
28	36	64
29	36	64
30	35	65

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	8	8	8	8	7	7	7	7	7	7	7	7	7	7	7	7	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	8	calm
6	8	calm
7	8	calm
8	8	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	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

DaylightNight

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 6:13 AM to 6:14 AM, and sunset from 6:30 PM to 6:08 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	12.1	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)	6:13	6:13	6:13	6:13	6:13	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14	6:14
Sunset (PM)	6:30	6:29	6:28	6:28	6:27	6:26	6:25	6:25	6:24	6:23	6:22	6:22	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	6:09	6:08

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.3	6:13	6:30
2	12.3	6:13	6:29
3	12.2	6:13	6:28
4	12.2	6:13	6:28
5	12.2	6:13	6:27
6	12.2	6:14	6:26
7	12.2	6:14	6:25
8	12.2	6:14	6:25
9	12.2	6:14	6:24
10	12.2	6:14	6:23
11	12.1	6:14	6:22
12	12.1	6:14	6:22
13	12.1	6:14	6:21
14	12.1	6:14	6:20
15	12.1	6:14	6:19
16	12.1	6:14	6:18
17	12.1	6:14	6:18
18	12.1	6:14	6:17
19	12.0	6:14	6:16
20	12.0	6:14	6:15
21	12.0	6:14	6:15
22	12.0	6:14	6:14
23	12.0	6:14	6:13
24	12.0	6:14	6:12
25	12.0	6:14	6:12
26	11.9	6:14	6:11
27	11.9	6:14	6:10
28	11.9	6:14	6:09
29	11.9	6:14	6:09
30	11.9	6:14	6:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.44 kWh/m².

For context, solar energy here swings from a low near 4.32 kWh/m² to a high of 6.2 kWh/m² in April across the year — September's 4.44 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
Solar energy (kWh/m²)	4.5	4.5	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	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	4.5	Bright
2	4.5	Bright
3	4.5	Bright
4	4.5	Bright
5	4.5	Bright
6	4.5	Bright
7	4.5	Bright
8	4.5	Bright
9	4.5	Bright
10	4.5	Bright
11	4.4	Bright
12	4.4	Bright
13	4.4	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

Planning a trip in September

Hazard calendar for Kanchanaburi

In seasonPeak

In September, Kanchanaburi sits inside its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.

Kanchanaburi sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

Kanchanaburi's monsoon runs May–October, when most of the year's rain falls.

Cyclone

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Kanchanaburi?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.5

Sightseeing

7th-best month of the year

4.1

Beach & pool

10th-best month of the year

September is a weaker month for outdoor sightseeing in Kanchanaburi.

What to pack for Kanchanaburi in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Kanchanaburi sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. About 23 days see rain.

light clothesrain gear

UV index in Kanchanaburi in September

LowModerateHighVery highExtreme

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 Kanchanaburi peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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	9	13	11	12	12	12	14	12	11	9	9
Level	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	9	Very high
Feb	9	Very high
Mar	13	Extreme
Apr	11	Extreme
May	12	Extreme
Jun	12	Extreme
Jul	12	Extreme
Aug	14	Extreme
Sep	12	Extreme
Oct	11	Extreme
Nov	9	Very high
Dec	9	Very high

Air quality in Kanchanaburi in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Kanchanaburi is worst in March — around 44 µg/m³ PM2.5 (poor), about 2.7× the cleanest month (June, 16 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Kanchanaburi's WHO annual average of 27 µg/m³.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	35	41	44	34	23	16	17	17	20	26	25	26
Level	Moderate	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	35	Moderate
Feb	41	Poor
Mar	44	Poor
Apr	34	Moderate
May	23	Moderate
Jun	16	Moderate
Jul	17	Moderate
Aug	17	Moderate
Sep	20	Moderate
Oct	26	Moderate
Nov	25	Moderate
Dec	26	Moderate

Location & terrain

Where is Kanchanaburi?

Kanchanaburi sits at 14.0°N, 99.5°E, 33 m above sea level, in Thailand. The nearest listed city is Tha Muang, 11 km away.

Topography around Kanchanaburi

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kanchanaburi.

Within 3 km, the terrain around Kanchanaburi has significant variations in elevation — a maximum elevation change of 337 m around an average of 51 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 483 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,266 m.

The land around Kanchanaburi is covered by trees (47%) and artificial surfaces (28%) within 3 km, trees (45%) and cropland (35%) within 16 km, and trees (53%) and cropland (37%) within 80 km.

3 km

337 m

trees 47%

16 km

483 m

trees 45%

80 km

1,266 m

trees 53%

treesgrasslandcroplandartificial surfacesbare terrainwater

← August Kanchanaburi year-round climate October →Best places to visit in September

September weather nearby: Tha Muang 11 km · Tha Maka 26 km · Bo Phloi 36 km · Ban Pong 41 km · Chom Bueng 43 km · Photharam 48 km · Ban I Chang 50 km · Bang Phae 54 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 Kanchanaburi (14.0041°, 99.5483°, elevation 33 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). 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).

	Avg high (°C)	Avg low (°C)
1	33	25
2	33	25
3	33	25
4	33	25
5	33	25
6	33	25
7	33	25
8	33	25
9	33	25
10	33	25
11	33	25
12	33	25
13	33	25
14	32	25
15	32	25
16	32	25
17	32	25
18	32	25
19	32	25
20	32	25
21	32	25
22	32	25
23	32	25
24	32	25
25	32	25
26	32	25
27	32	25
28	32	25
29	32	25
30	32	25

	Clearer (%)	Cloudier (%)
1	7	93
2	7	93
3	6	94
4	6	94
5	6	94
6	6	94
7	6	94
8	6	94
9	6	94
10	7	93
11	7	93
12	7	93
13	7	93
14	8	92
15	9	91
16	9	91
17	9	91
18	9	91
19	11	89
20	12	88
21	12	88
22	12	88
23	14	86
24	14	86
25	14	86
26	15	85
27	15	85
28	15	85
29	16	84
30	16	84

	Rain chance (%)
1	72
2	72
3	73
4	73
5	74
6	74
7	75
8	75
9	75
10	76
11	76
12	76
13	77
14	77
15	77
16	78
17	78
18	78
19	78
20	78
21	78
22	78
23	78
24	78
25	79
26	79
27	79
28	80
29	80
30	80

	Oppressive (%)	Miserable (%)
1	72	28
2	72	28
3	71	29
4	71	29
5	70	30
6	69	31
7	68	32
8	66	34
9	65	35
10	64	36
11	62	38
12	61	39
13	59	41
14	57	43
15	55	45
16	54	46
17	52	48
18	49	51
19	48	52
20	46	54
21	44	56
22	43	57
23	41	59
24	40	60
25	39	61
26	38	62
27	37	63
28	36	64
29	36	64
30	35	65

	Avg high (°C)	Avg low (°C)
1	33	25
2	33	25
3	33	25
4	33	25
5	33	25
6	33	25
7	33	25
8	33	25
9	33	25
10	33	25
11	33	25
12	33	25
13	33	25
14	32	25
15	32	25
16	32	25
17	32	25
18	32	25
19	32	25
20	32	25
21	32	25
22	32	25
23	32	25
24	32	25
25	32	25
26	32	25
27	32	25
28	32	25
29	32	25
30	32	25

	Clearer (%)	Cloudier (%)
1	7	93
2	7	93
3	6	94
4	6	94
5	6	94
6	6	94
7	6	94
8	6	94
9	6	94
10	7	93
11	7	93
12	7	93
13	7	93
14	8	92
15	9	91
16	9	91
17	9	91
18	9	91
19	11	89
20	12	88
21	12	88
22	12	88
23	14	86
24	14	86
25	14	86
26	15	85
27	15	85
28	15	85
29	16	84
30	16	84

	Rain chance (%)
1	72
2	72
3	73
4	73
5	74
6	74
7	75
8	75
9	75
10	76
11	76
12	76
13	77
14	77
15	77
16	78
17	78
18	78
19	78
20	78
21	78
22	78
23	78
24	78
25	79
26	79
27	79
28	80
29	80
30	80

	Oppressive (%)	Miserable (%)
1	72	28
2	72	28
3	71	29
4	71	29
5	70	30
6	69	31
7	68	32
8	66	34
9	65	35
10	64	36
11	62	38
12	61	39
13	59	41
14	57	43
15	55	45
16	54	46
17	52	48
18	49	51
19	48	52
20	46	54
21	44	56
22	43	57
23	41	59
24	40	60
25	39	61
26	38	62
27	37	63
28	36	64
29	36	64
30	35	65

	Avg high (°C)	Avg low (°C)
1	33	25
2	33	25
3	33	25
4	33	25
5	33	25
6	33	25
7	33	25
8	33	25
9	33	25
10	33	25
11	33	25
12	33	25
13	33	25
14	32	25
15	32	25
16	32	25
17	32	25
18	32	25
19	32	25
20	32	25
21	32	25
22	32	25
23	32	25
24	32	25
25	32	25
26	32	25
27	32	25
28	32	25
29	32	25
30	32	25

	Clearer (%)	Cloudier (%)
1	7	93
2	7	93
3	6	94
4	6	94
5	6	94
6	6	94
7	6	94
8	6	94
9	6	94
10	7	93
11	7	93
12	7	93
13	7	93
14	8	92
15	9	91
16	9	91
17	9	91
18	9	91
19	11	89
20	12	88
21	12	88
22	12	88
23	14	86
24	14	86
25	14	86
26	15	85
27	15	85
28	15	85
29	16	84
30	16	84

	Rain chance (%)
1	72
2	72
3	73
4	73
5	74
6	74
7	75
8	75
9	75
10	76
11	76
12	76
13	77
14	77
15	77
16	78
17	78
18	78
19	78
20	78
21	78
22	78
23	78
24	78
25	79
26	79
27	79
28	80
29	80
30	80

	Oppressive (%)	Miserable (%)
1	72	28
2	72	28
3	71	29
4	71	29
5	70	30
6	69	31
7	68	32
8	66	34
9	65	35
10	64	36
11	62	38
12	61	39
13	59	41
14	57	43
15	55	45
16	54	46
17	52	48
18	49	51
19	48	52
20	46	54
21	44	56
22	43	57
23	41	59
24	40	60
25	39	61
26	38	62
27	37	63
28	36	64
29	36	64
30	35	65