Ban Phan Don weather in September

In September, Ban Phan Don sees average daytime highs of 31°C and overnight lows near 25°C, with 267 mm of rain across 23.9 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 31°C through the month. The sky is clear or mostly clear about 12% 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 Ban Phan Don's 9th-clearest and 12th-windiest month. For the whole year in context, see Ban Phan Don's year-round climate.

Daytime high
31°
8th warmest
Overnight low
25°
7th coldest
Rainfall
267 mm
23.9 wet days
Daylight
12 h 06 min
6:00 AM – 6:05 PM
Cloud cover
80%
9th clearest
Wind
6 km/h
12th windiest
Solar energy
4.4 kWh/m²
Travel score
2.8
out of 10

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 Ban Phan Don reaches about 31°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 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
213225
223225
233225
243225
253225
263225
273225
283225
293225
303124

How September really feels in Ban Phan Don

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
6 feel dangerously hot (≥ 39°C)
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.

Ban Phan Don 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
Jan29° / 17°81.511.16.7
Feb32° / 19°132.311.45.2
Mar34° / 23°365.811.93.4
Apr35° / 25°6910.712.42.4
May34° / 26°19521.112.82.2
Jun33° / 26°19022.1132.3
Jul32° / 26°24124.612.92.5
Aug32° / 25°29926.312.62.5
Sep31° / 25°26723.912.12.8
Oct31° / 23°9111.511.64.3
Nov30° / 21°223.211.25.8
Dec29° / 18°61.1117.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% 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 79%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11090
21090
3991
41090
51189
61189
71189
81288
91288
101585
111585
121684
131783
141981
151981
162179
172377
182476
192674
202674
212971
222971
233070
243070
253367
263367
273466
283565
293763
303961

Chance of precipitation in September

Any precipitation

Ban Phan Don gets around 267 mm of rain over 23.9 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 79% and peaks near 90% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
190
290
390
490
590
689
789
888
988
1087
1187
1286
1385
1484
1583
1682
1781
1879
1978
2076
2174
2273
2371
2469
2568
2666
2764
2863
2961
3060

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 77% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
10991
20991
301090
401090
501189
601189
701288
801288
901387
1011485
1111485
1211584
1311683
1421781
1521880
1621979
1722078
1832176
1932275
2032374
2142571
2242670
2342868
2453065
2553164
2653362
2763559
2863658
2973855
3083953

Wind in September

Winds average 6 km/h in September, the calmest month.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
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 5:58 AM to 6:02 AM, and sunset from 6:18 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:586:18
212.35:586:17
312.35:586:16
412.35:586:16
512.35:586:15
612.35:586:14
712.25:586:13
812.25:596:12
912.25:596:11
1012.25:596:10
1112.25:596:10
1212.25:596:09
1312.15:596:08
1412.15:596:07
1512.15:596:06
1612.16:006:05
1712.16:006:04
1812.16:006:04
1912.06:006:03
2012.06:006:02
2112.06:006:01
2212.06:006:00
2312.06:005:59
2412.06:015:58
2511.96:015:58
2611.96:015:57
2711.96:015:56
2811.96:015:55
2911.96:015:54
3011.96:025:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.4 kWh/m².

For context, solar energy here swings from a low near 4.27 kWh/m² to a high of 6.07 kWh/m² in April across the year — September's 4.4 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
84.2Bright
94.2Bright
104.2Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.4Bright
184.4Bright
194.4Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in September

Hazard calendar for Ban Phan Don

In seasonPeak

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

Ban Phan Don's monsoon runs May–September, 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 Ban Phan Don?

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

2.8
Sightseeing
7th-best month of the year
4.3
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Ban Phan Don.

What to pack for Ban Phan Don in September

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

In September, Ban Phan Don sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. About 24 days see rain.

light clothesrain gear

UV index in Ban Phan Don in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ban Phan Don peaks around August 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 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 12UV 13Dec 14UV 8
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr11Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Ban Phan Don 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 Ban Phan Don is worst in March — around 65 µg/m³ PM2.5 (unhealthy), about 2.4× the cleanest month (July, 27 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModeratePoorModerateMar 1664 µg/m³Jul 1227 µg/m³
PM2.5 (µg/m³)Level
Jan42Poor
Feb54Poor
Mar65Unhealthy
Apr52Poor
May36Poor
Jun28Moderate
Jul27Moderate
Aug29Moderate
Sep34Moderate
Oct37Poor
Nov35Poor
Dec34Moderate
Location & terrain

Where is Ban Phan Don?

Ban Phan Don sits at 17.1°N, 103.0°E, 180 m above sea level, in Thailand. The nearest listed city is Ban Nong Wua So, 30 km away.

Topography around Ban Phan Don

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

Within 3 km, the terrain around Ban Phan Don has only modest variations in elevation — a maximum elevation change of 26 m around an average of 172 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 77 m; within 80 km, significant variations in elevation — a maximum elevation change of 519 m.

The land around Ban Phan Don is covered by cropland (69%) within 3 km, cropland (72%) within 16 km, and cropland (67%) and trees (27%) within 80 km.

3 km
26 m
16 km
77 m
80 km
519 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Ban Nong Wua So 30 km · Udon Thani 36 km · Kut Chap 53 km · Nong Bua Lamphu 57 km · Sawang Daen Din 63 km · Nong Kung Si 65 km · Ban Dung 69 km · Warichaphum 73 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 Ban Phan Don (17.1427°, 102.9726°, elevation 180 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).