Wang Saphung weather in September

In September, Wang Saphung sees average daytime highs of 30°C and overnight lows near 24°C, with 250 mm of rain across 24.4 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 7% 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 Wang Saphung's 9th-clearest and 12th-windiest month. For the whole year in context, see Wang Saphung's year-round climate.

Daytime high
30°
8th warmest
Overnight low
24°
8th coldest
Rainfall
250 mm
24.4 wet days
Daylight
12 h 06 min
6:04 AM – 6:10 PM
Cloud cover
82%
9th clearest
Wind
4 km/h
12th windiest
Solar energy
4.38 kWh/m²
Travel score
3.1
out of 10

Wang Saphung is town in Loei province, Thailand.

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 30°C through the month.

A typical September day in Wang Saphung reaches about 30°C in the afternoon and slips back to 24°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173024
183024
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023

How September really feels in Wang Saphung

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 Saphung weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 16°132.211.17.7
Feb30° / 18°18311.46.0
Mar32° / 21°588.911.94.1
Apr33° / 23°10816.112.43.0
May32° / 24°21423.912.82.6
Jun32° / 24°16720.7132.9
Jul31° / 24°18522.212.93.0
Aug30° / 24°25125.112.62.9
Sep30° / 24°25024.412.13.1
Oct29° / 22°12214.411.64.8
Nov28° / 19°253.611.27.1
Dec27° / 17°101.6118.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 10% of September, with mostly cloudy or overcast conditions the remaining 83%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1793
2793
3793
4793
5793
6892
71090
81090
91090
101189
111189
121387
131486
141486
151585
161585
171783
181981
191981
202179
212278
222377
232575
242674
252773
262872
272971
283070
293367
303367

Chance of precipitation in September

Any precipitation

Wang Saphung gets around 250 mm of rain over 24.4 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 81% and peaks near 86% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
186
286
386
486
586
686
786
885
985
1085
1185
1285
1384
1484
1583
1683
1782
1881
1981
2080
2179
2279
2378
2477
2576
2675
2774
2873
2972
3071

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 87% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1008911
2008911
3008911
4008911
5008911
6008911
7008911
8018811
9018811
10018910
11018910
12018910
13018910
14028810
15028810
16038710
17038710
18038710
19048610
20048610
21058510
22058510
2306859
2416849
2517839
2618838
2718838
2819837
29110836
30111826

Wind in September

Winds average 4 km/h in September, the calmest month.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

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 6:02 AM to 6:06 AM, and sunset from 6:23 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:026:23
212.36:026:22
312.36:036:21
412.36:036:20
512.36:036:20
612.36:036:19
712.26:036:18
812.26:036:17
912.26:036:16
1012.26:046:15
1112.26:046:14
1212.26:046:14
1312.16:046:13
1412.16:046:12
1512.16:046:11
1612.16:046:10
1712.16:046:09
1812.16:056:08
1912.06:056:08
2012.06:056:07
2112.06:056:06
2212.06:056:05
2312.06:056:04
2412.06:056:03
2511.96:066:02
2611.96:066:01
2711.96:066:01
2811.96:066:00
2911.96:065:59
3011.96:065:58

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.38 kWh/m².

For context, solar energy here swings from a low near 4.13 kWh/m² to a high of 5.98 kWh/m² in April across the year — September's 4.38 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
Planning a trip in September

Hazard calendar for Wang Saphung

In seasonPeak

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

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

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

Is September a good time to visit Wang Saphung?

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

3.1
Sightseeing
7th-best month of the year
4.3
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Wang Saphung.

What to pack for Wang Saphung in September

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

In September, Wang Saphung sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. About 24 days see rain.

light clothesrain gear

UV index in Wang Saphung 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 Saphung peaks around August 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 13UV 13Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb10Extreme
Mar12Extreme
Apr11Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Wang Saphung 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 Saphung is worst in March — around 63 µg/m³ PM2.5 (unhealthy), about 3.1× the cleanest month (July, 20 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModerateMar 1861 µg/m³Jul 1320 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb45Poor
Mar63Unhealthy
Apr50Poor
May28Moderate
Jun20Moderate
Jul20Moderate
Aug21Moderate
Sep23Moderate
Oct25Moderate
Nov24Moderate
Dec25Moderate
Location & terrain

Where is Wang Saphung?

Wang Saphung sits at 17.3°N, 101.8°E, 254 m above sea level, in Thailand. The nearest listed city is Erawan, 20 km away.

Topography around Wang Saphung

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

Within 3 km, the terrain around Wang Saphung has only modest variations in elevation — a maximum elevation change of 147 m around an average of 260 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 399 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,456 m.

The land around Wang Saphung is covered by trees (47%) and cropland (29%) within 3 km, trees (53%) and cropland (40%) within 16 km, and trees (62%) and cropland (28%) within 80 km.

3 km
147 m
16 km
399 m
80 km
1,456 m
treesgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Erawan 20 km · Loei 22 km · Na Klang 45 km · Phu Kradueng 48 km · Nam Som 69 km · Nong Bua Lamphu 72 km · Lom Sak 81 km · Kut Chap 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 Saphung (17.301°, 101.7685°, elevation 254 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).