Wang Nam Yen weather in September

In September, Wang Nam Yen sees average daytime highs of 31°C and overnight lows near 25°C, with 262 mm of rain across 27 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 31°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 Wang Nam Yen's 9th-clearest and 10th-windiest month. For the whole year in context, see Wang Nam Yen's year-round climate.

Daytime high
31°
9th warmest
Overnight low
25°
7th coldest
Rainfall
262 mm
27 wet days
Daylight
12 h 06 min
6:03 AM – 6:08 PM
Cloud cover
88%
9th clearest
Wind
7 km/h
10th windiest
Solar energy
4.5 kWh/m²
Travel score
2.6
out of 10

Wang Nam Yen is town in Sa Kaeo province, Thailand.

Founded
1980

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical September day in Wang Nam Yen reaches about 31°C in the afternoon and slips back to 25°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13125
23125
33125
43125
53125
63125
73125
83125
93125
103125
113125
123125
133125
143125
153125
163125
173125
183125
193125
203125
213125
223125
233125
243125
253125
263125
273124
283124
293124
303124

How September really feels in Wang Nam Yen

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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Wang Nam Yen 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°173.311.35.1
Feb33° / 22°244.311.64.1
Mar34° / 24°7111.811.93.0
Apr34° / 25°10617.912.32.4
May33° / 26°17424.612.62.3
Jun32° / 25°17625.112.82.5
Jul31° / 25°20227.412.72.6
Aug31° / 25°21927.612.42.5
Sep31° / 25°2622712.12.6
Oct31° / 24°17519.611.73.5
Nov31° / 23°316.111.44.9
Dec31° / 21°71.711.25.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% 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 93%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1793
2793
3694
4694
5694
6694
7694
8694
9595
10595
11595
12595
13694
14694
15694
16694
17793
18892
19892
20892
21991
22991
23991
241090
251090
261090
271189
281189
291288
301288

Chance of precipitation in September

Any precipitation

Wang Nam Yen gets around 262 mm of rain over 27 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.

0%20%40%60%80%100%151015202530
Rain chance (%)
190
290
391
491
591
691
791
891
991
1091
1191
1291
1391
1491
1591
1691
1791
1891
1991
2090
2190
2290
2389
2489
2588
2688
2788
2887
2987
3086

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 84% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
11585
21684
31684
41684
51684
61684
71684
81684
91684
101585
111585
121684
131684
141684
151684
161684
171684
181684
191684
201585
211585
221684
231684
241684
251783
261783
271882
281882
291981
302080

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 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 6:03 AM to 6:04 AM, and sunset from 6:19 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:036:19
212.36:036:18
312.26:036:17
412.26:036:17
512.26:036:16
612.26:036:15
712.26:036:15
812.26:036:14
912.26:036:13
1012.26:036:12
1112.16:036:12
1212.16:036:11
1312.16:036:10
1412.16:036:09
1512.16:036:09
1612.16:036:08
1712.16:036:07
1812.06:036:06
1912.06:036:06
2012.06:036:05
2112.06:036:04
2212.06:036:03
2312.06:046:03
2412.06:046:02
2512.06:046:01
2611.96:046:00
2711.96:046:00
2811.96:045:59
2911.96:045:58
3011.96:045:57

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.5 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.5 kWh/m² to a high of 5.93 kWh/m² in April across the year — September's 4.5 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Hazard calendar for Wang Nam Yen

In seasonPeak

In September, Wang Nam Yen sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Wang Nam Yen'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 Wang Nam Yen?

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

2.6
Sightseeing
7th-best month of the year
3.8
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Wang Nam Yen.

What to pack for Wang Nam Yen in September

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

In September, Wang Nam Yen sees daytime highs around 31°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 Wang Nam Yen 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 Wang Nam Yen peaks around August 15 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 22 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 15UV 14Nov 22UV 8
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec9Very high

Air quality in Wang Nam Yen 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 Wang Nam Yen is worst in February — around 40 µg/m³ PM2.5 (poor), about 2.2× the cleanest month (December, 19 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateFeb 1740 µg/m³Dec 1019 µg/m³
PM2.5 (µg/m³)Level
Jan32Moderate
Feb40Poor
Mar36Poor
Apr28Moderate
May22Moderate
Jun20Moderate
Jul21Moderate
Aug21Moderate
Sep23Moderate
Oct23Moderate
Nov19Moderate
Dec19Moderate
Location & terrain

Where is Wang Nam Yen?

Wang Nam Yen sits at 13.5°N, 102.2°E, 104 m above sea level, in Thailand. The nearest listed city is Sa Kaeo, 36 km away.

Topography around Wang Nam Yen

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

Within 3 km, the terrain around Wang Nam Yen has only modest variations in elevation — a maximum elevation change of 80 m around an average of 99 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 259 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,590 m.

The land around Wang Nam Yen is covered by trees (44%) and cropland (27%) within 3 km, cropland (52%) and trees (34%) within 16 km, and trees (56%) and cropland (38%) within 80 km.

3 km
80 m
16 km
259 m
80 km
1,590 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Sa Kaeo 36 km · Aranyaprathet 40 km · Poipet 45 km · Ou Bei Choan 67 km · Kabin Buri 71 km · Na Di 80 km · Sisophon 86 km · Pailin 86 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
Buddhist 93%Muslim 5%Christian 1%other 1%

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 Wang Nam Yen (13.5048°, 102.1809°, elevation 104 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).