Phumĭ Véal Tônsay weather in September

In September, Phumĭ Véal Tônsay sees average daytime highs of 32°C and overnight lows near 25°C, with 221 mm of rain across 26.7 wet days and about 12.1 hours of daylight. It is the 9th-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 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Phumĭ Véal Tônsay's 12th-clearest and 10th-windiest month. For the whole year in context, see Phumĭ Véal Tônsay's year-round climate.

Daytime high: 32°; 9th warmest
Overnight low: 25°; 6th coldest
Rainfall: 221 mm; 26.7 wet days
Daylight: 12 h 06 min; 5:54 AM – 5:58 PM
Cloud cover: 89%; 12th clearest
Wind: 7 km/h; 10th windiest
Solar energy: 4.74 kWh/m²
Travel score: 2.2; out of 10

← August Phumĭ Véal Tônsay 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 Phumĭ Véal Tônsay 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 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)	33	33	33	33	33	33	33	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)	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	32	25
9	32	25
10	32	25
11	32	25
12	32	25
13	32	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 Phumĭ Véal Tônsay

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.

Phumĭ Véal Tônsay weather by month

How September compares with the rest of the year at a glance. September is the 9th-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	33° / 23°	12	2.5	11.4	4.3
Feb	34° / 24°	8	1.7	11.6	3.5
Mar	36° / 25°	42	7.1	11.9	2.3
Apr	36° / 26°	79	14.7	12.3	1.7
May	35° / 26°	137	22.5	12.5	1.6
Jun	34° / 26°	130	23.7	12.7	1.9
Jul	33° / 25°	131	24.8	12.6	2.1
Aug	33° / 25°	151	25	12.4	2.2
Sep	32° / 25°	221	26.7	12.1	2.2
Oct	31° / 24°	211	23.9	11.7	2.9
Nov	31° / 24°	66	10.3	11.5	4.1
Dec	31° / 23°	22	4	11.3	4.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 4% of September, with mostly cloudy or overcast conditions the remaining 94%.

	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	6	5	5	5	4	4	4	4	4	5	5	5	5	5	5	6	7	8	8	9	9	9	9	10	9	8	8	8	8
Cloudier (%)	94	94	95	95	95	96	96	96	96	96	95	95	95	95	95	95	94	93	92	92	91	91	91	91	90	91	92	92	92	92

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	5	95
4	5	95
5	5	95
6	4	96
7	4	96
8	4	96
9	4	96
10	4	96
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	5	95
17	6	94
18	7	93
19	8	92
20	8	92
21	9	91
22	9	91
23	9	91
24	9	91
25	10	90
26	9	91
27	8	92
28	8	92
29	8	92
30	8	92

Chance of precipitation in September

Any precipitation

Phumĭ Véal Tônsay gets around 221 mm of rain over 26.7 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 89% 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 (%)	86	86	87	87	87	87	88	88	88	88	88	88	89	89	89	89	89	89	89	89	89	89	90	90	90	90	90	90	91	91

	Rain chance (%)
1	86
2	86
3	87
4	87
5	87
6	87
7	88
8	88
9	88
10	88
11	88
12	88
13	89
14	89
15	89
16	89
17	89
18	89
19	89
20	89
21	89
22	89
23	90
24	90
25	90
26	90
27	90
28	90
29	91
30	91

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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 50% 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 (%)	65	65	64	64	64	63	62	62	60	59	58	56	55	54	52	50	49	47	45	43	41	39	38	37	35	35	34	33	33	32
Miserable (%)	35	35	36	36	36	37	38	38	40	41	42	44	45	46	48	50	51	53	55	57	59	61	62	63	65	65	66	67	67	68

	Oppressive (%)	Miserable (%)
1	65	35
2	65	35
3	64	36
4	64	36
5	64	36
6	63	37
7	62	38
8	62	38
9	60	40
10	59	41
11	58	42
12	56	44
13	55	45
14	54	46
15	52	48
16	50	50
17	49	51
18	47	53
19	45	55
20	43	57
21	41	59
22	39	61
23	38	62
24	37	63
25	35	65
26	35	65
27	34	66
28	33	67
29	33	67
30	32	68

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 5 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	5
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	5	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 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 18 minutes over September. Sunrise moves from 5:55 AM to 5:54 AM, and sunset from 6:08 PM to 5:48 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)	12.2	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	12.1	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	11.9	11.9	11.9	11.9
Sunrise (AM)	5:55	5:55	5:55	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54
Sunset (PM)	6:08	6:08	6:07	6:06	6:06	6:05	6:04	6:04	6:03	6:02	6:01	6:01	6:00	5:59	5:59	5:58	5:57	5:57	5:56	5:55	5:54	5:54	5:53	5:52	5:52	5:51	5:50	5:50	5:49	5:48

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.2	5:55	6:08
2	12.2	5:55	6:08
3	12.2	5:55	6:07
4	12.2	5:54	6:06
5	12.2	5:54	6:06
6	12.2	5:54	6:05
7	12.2	5:54	6:04
8	12.2	5:54	6:04
9	12.1	5:54	6:03
10	12.1	5:54	6:02
11	12.1	5:54	6:01
12	12.1	5:54	6:01
13	12.1	5:54	6:00
14	12.1	5:54	5:59
15	12.1	5:54	5:59
16	12.1	5:54	5:58
17	12.1	5:54	5:57
18	12.0	5:54	5:57
19	12.0	5:54	5:56
20	12.0	5:54	5:55
21	12.0	5:54	5:54
22	12.0	5:54	5:54
23	12.0	5:54	5:53
24	12.0	5:54	5:52
25	12.0	5:54	5:52
26	12.0	5:54	5:51
27	11.9	5:54	5:50
28	11.9	5:54	5:50
29	11.9	5:54	5:49
30	11.9	5:54	5:48

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.74 kWh/m².

For context, solar energy here swings from a low near 4.64 kWh/m² to a high of 6.11 kWh/m² in March across the year — September's 4.74 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)	5.1	5.0	5.0	5.0	5.0	5.0	4.9	4.9	4.8	4.8	4.8	4.8	4.7	4.7	4.7	4.7	4.6	4.6	4.6	4.6	4.6	4.6	4.6	4.6	4.6	4.6	4.5	4.5	4.5	4.5
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	5.1	Bright
2	5.0	Bright
3	5.0	Bright
4	5.0	Bright
5	5.0	Bright
6	5.0	Bright
7	4.9	Bright
8	4.9	Bright
9	4.8	Bright
10	4.8	Bright
11	4.8	Bright
12	4.8	Bright
13	4.7	Bright
14	4.7	Bright
15	4.7	Bright
16	4.7	Bright
17	4.6	Bright
18	4.6	Bright
19	4.6	Bright
20	4.6	Bright
21	4.6	Bright
22	4.6	Bright
23	4.6	Bright
24	4.6	Bright
25	4.6	Bright
26	4.6	Bright
27	4.5	Bright
28	4.5	Bright
29	4.5	Bright
30	4.5	Bright

Planning a trip in September

Hazard calendar for Phumĭ Véal Tônsay

In seasonPeak

In September, Phumĭ Véal Tônsay sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Phumĭ Véal Tônsay's rainy season runs May–October, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Phumĭ Véal Tônsay?

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

2.2

Sightseeing

7th-best month of the year

3.7

Beach & pool

11th-best month of the year

September is a weaker month for outdoor sightseeing in Phumĭ Véal Tônsay.

What to pack for Phumĭ Véal Tônsay in September

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

In September, Phumĭ Véal Tônsay sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

UV index in Phumĭ Véal Tônsay in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Phumĭ Véal Tônsay peaks around August 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 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)	10	11	12	12	11	12	12	14	13	11	9	9
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	10	Extreme
Feb	11	Extreme
Mar	12	Extreme
Apr	12	Extreme
May	11	Extreme
Jun	12	Extreme
Jul	12	Extreme
Aug	14	Extreme
Sep	13	Extreme
Oct	11	Extreme
Nov	9	Very high
Dec	9	Very high

Air quality in Phumĭ Véal Tônsay 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 Phumĭ Véal Tônsay is worst in February — around 45 µg/m³ PM2.5 (poor), about 3.8× the cleanest month (November, 12 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	29	45	36	27	16	13	13	12	12	13	12	13
Level	Moderate	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Good	Moderate	Moderate	Good	Moderate

	PM2.5 (µg/m³)	Level
Jan	29	Moderate
Feb	45	Poor
Mar	36	Poor
Apr	27	Moderate
May	16	Moderate
Jun	13	Moderate
Jul	13	Moderate
Aug	12	Good
Sep	12	Moderate
Oct	13	Moderate
Nov	12	Good
Dec	13	Moderate

Location & terrain

Where is Phumĭ Véal Tônsay?

Phumĭ Véal Tônsay sits at 11.7°N, 104.6°E, 46 m above sea level, in Cambodia. The nearest listed city is Kampong Speu, 28 km away.

Topography around Phumĭ Véal Tônsay

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

Within 3 km, the terrain around Phumĭ Véal Tônsay has only modest variations in elevation — a maximum elevation change of 21 m around an average of 42 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 217 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,787 m.

The land around Phumĭ Véal Tônsay is covered by cropland (74%) within 3 km, cropland (71%) and grassland (21%) within 16 km, and cropland (54%) and trees (24%) within 80 km.

3 km

21 m

cropland 74%

16 km

217 m

cropland 71%

80 km

1,787 m

cropland 54%

treesgrasslandcroplandartificial surfacesbare terrainwaterwetland

← August Phumĭ Véal Tônsay year-round climate October →Best places to visit in September

September weather nearby: Kampong Speu 28 km · Chrang Chamreh Muoy 34 km · Boeng Kak Pir 36 km · Phnom Penh 39 km · Dangkao 40 km · Ta Khmau 47 km · Phumĭ Yoŭl Toŭng 49 km · Kandoeng 53 km

Cambodia travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type A / C / G; 230 V · 50 Hz
Prices: ≈ 34% of US; price level, 2025
GDP per capita: $2,872; 2025
Happiness: 4.5 / 10; World Happiness, 2025
Safe drinking water: 30%; of population, 2024
Homicide rate: 1.8; per 100k, 2011
Road deaths: 19.6; per 100k/yr, 2019
Income group: Lower middle; World Bank
English: Very low; EF EPI 390
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 Phumĭ Véal Tônsay (11.6962°, 104.5806°, elevation 46 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. 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	32	25
9	32	25
10	32	25
11	32	25
12	32	25
13	32	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	6	94
2	6	94
3	5	95
4	5	95
5	5	95
6	4	96
7	4	96
8	4	96
9	4	96
10	4	96
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	5	95
17	6	94
18	7	93
19	8	92
20	8	92
21	9	91
22	9	91
23	9	91
24	9	91
25	10	90
26	9	91
27	8	92
28	8	92
29	8	92
30	8	92

	Rain chance (%)
1	86
2	86
3	87
4	87
5	87
6	87
7	88
8	88
9	88
10	88
11	88
12	88
13	89
14	89
15	89
16	89
17	89
18	89
19	89
20	89
21	89
22	89
23	90
24	90
25	90
26	90
27	90
28	90
29	91
30	91

	Oppressive (%)	Miserable (%)
1	65	35
2	65	35
3	64	36
4	64	36
5	64	36
6	63	37
7	62	38
8	62	38
9	60	40
10	59	41
11	58	42
12	56	44
13	55	45
14	54	46
15	52	48
16	50	50
17	49	51
18	47	53
19	45	55
20	43	57
21	41	59
22	39	61
23	38	62
24	37	63
25	35	65
26	35	65
27	34	66
28	33	67
29	33	67
30	32	68

	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	32	25
9	32	25
10	32	25
11	32	25
12	32	25
13	32	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	6	94
2	6	94
3	5	95
4	5	95
5	5	95
6	4	96
7	4	96
8	4	96
9	4	96
10	4	96
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	5	95
17	6	94
18	7	93
19	8	92
20	8	92
21	9	91
22	9	91
23	9	91
24	9	91
25	10	90
26	9	91
27	8	92
28	8	92
29	8	92
30	8	92

	Rain chance (%)
1	86
2	86
3	87
4	87
5	87
6	87
7	88
8	88
9	88
10	88
11	88
12	88
13	89
14	89
15	89
16	89
17	89
18	89
19	89
20	89
21	89
22	89
23	90
24	90
25	90
26	90
27	90
28	90
29	91
30	91

	Oppressive (%)	Miserable (%)
1	65	35
2	65	35
3	64	36
4	64	36
5	64	36
6	63	37
7	62	38
8	62	38
9	60	40
10	59	41
11	58	42
12	56	44
13	55	45
14	54	46
15	52	48
16	50	50
17	49	51
18	47	53
19	45	55
20	43	57
21	41	59
22	39	61
23	38	62
24	37	63
25	35	65
26	35	65
27	34	66
28	33	67
29	33	67
30	32	68

	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	32	25
9	32	25
10	32	25
11	32	25
12	32	25
13	32	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	6	94
2	6	94
3	5	95
4	5	95
5	5	95
6	4	96
7	4	96
8	4	96
9	4	96
10	4	96
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	5	95
17	6	94
18	7	93
19	8	92
20	8	92
21	9	91
22	9	91
23	9	91
24	9	91
25	10	90
26	9	91
27	8	92
28	8	92
29	8	92
30	8	92

	Rain chance (%)
1	86
2	86
3	87
4	87
5	87
6	87
7	88
8	88
9	88
10	88
11	88
12	88
13	89
14	89
15	89
16	89
17	89
18	89
19	89
20	89
21	89
22	89
23	90
24	90
25	90
26	90
27	90
28	90
29	91
30	91

	Oppressive (%)	Miserable (%)
1	65	35
2	65	35
3	64	36
4	64	36
5	64	36
6	63	37
7	62	38
8	62	38
9	60	40
10	59	41
11	58	42
12	56	44
13	55	45
14	54	46
15	52	48
16	50	50
17	49	51
18	47	53
19	45	55
20	43	57
21	41	59
22	39	61
23	38	62
24	37	63
25	35	65
26	35	65
27	34	66
28	33	67
29	33	67
30	32	68