Mae Sot weather in September

In September, Mae Sot sees average daytime highs of 30°C and overnight lows near 23°C, with 258 mm of rain across 27 wet days and about 12.1 hours of daylight. It is the 9th-warmest and 4th-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 2% 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 Mae Sot's 9th-clearest and 12th-windiest month. For the whole year in context, see Mae Sot's year-round climate.

Daytime high
30°
9th warmest
Overnight low
23°
10th coldest
Rainfall
258 mm
27 wet days
Daylight
12 h 06 min
6:17 AM – 6:23 PM
Cloud cover
87%
9th clearest
Wind
5 km/h
12th windiest
Solar energy
3.7 kWh/m²
Travel score
2.9
out of 10

Mae Sot is city in Tak province, Thailand.

Density
1,638/km²
people per km²

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 Mae Sot reaches about 30°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 32°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122923
132923
142923
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023

How September really feels in Mae Sot

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.

Mae Sot weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 16°7111.15.9
Feb33° / 17°60.411.44.6
Mar35° / 20°172.611.93.4
Apr35° / 23°39712.42.6
May32° / 24°20221.612.82.7
Jun29° / 24°34128.6132.8
Jul28° / 23°39429.612.93.0
Aug28° / 23°39729.912.63.0
Sep30° / 23°2582712.12.9
Oct31° / 22°10614.911.64.1
Nov31° / 20°172.911.25.3
Dec30° / 17°81.1116.3

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 7% of September, with mostly cloudy or overcast conditions the remaining 91%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1298
2298
3298
4298
5397
6397
7397
8397
9595
10595
11595
12595
13694
14694
15793
16892
17892
18991
191189
201189
211288
221387
231486
241486
251684
261882
271882
282080
292179
302377

Chance of precipitation in September

Any precipitation

Mae Sot gets around 258 mm of rain over 27 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 89% and peaks near 95% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
195
295
395
495
595
694
794
894
994
1094
1193
1293
1393
1492
1591
1691
1790
1889
1989
2088
2187
2286
2385
2484
2584
2683
2782
2880
2979
3078

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 83% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
108812
208812
308812
408812
508812
608713
708713
808614
908515
1008515
1108416
1208317
1308317
1408218
1508119
1608119
1708020
1808020
1907921
2007921
2107921
2207921
2307921
2408020
2508020
2608119
2708119
2808218
2918217
3018217

Wind in September

Winds average 5 km/h in September, the calmest month.

Across September, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
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 6:16 AM to 6:19 AM, and sunset from 6:35 PM to 6:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:166:35
212.36:166:35
312.36:166:34
412.36:166:33
512.36:166:32
612.36:166:31
712.26:166:30
812.26:166:30
912.26:166:29
1012.26:176:28
1112.26:176:27
1212.26:176:26
1312.16:176:25
1412.16:176:25
1512.16:176:24
1612.16:176:23
1712.16:176:22
1812.16:176:21
1912.06:186:20
2012.06:186:19
2112.06:186:19
2212.06:186:18
2312.06:186:17
2412.06:186:16
2511.96:186:15
2611.96:186:14
2711.96:196:14
2811.96:196:13
2911.96:196:12
3011.96:196:11

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.7 kWh/m².

For context, solar energy here swings from a low near 2.88 kWh/m² to a high of 6.23 kWh/m² in March across the year — September's 3.7 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
13.3Moderate
23.3Moderate
33.4Moderate
43.4Moderate
53.4Moderate
63.4Moderate
73.4Moderate
83.5Moderate
93.5Moderate
103.5Moderate
113.5Moderate
123.6Moderate
133.6Moderate
143.6Moderate
153.6Moderate
163.7Moderate
173.7Moderate
183.8Moderate
193.8Moderate
203.8Moderate
213.9Moderate
223.9Moderate
233.9Moderate
244.0Moderate
254.0Bright
264.0Bright
274.1Bright
284.1Bright
294.1Bright
304.2Bright
Planning a trip in September

Hazard calendar for Mae Sot

In seasonPeak

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

Mae Sot'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 Mae Sot?

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

2.9
Sightseeing
9th-best month of the year
4.0
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Mae Sot.

What to pack for Mae Sot in September

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

In September, Mae Sot sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

UV index in Mae Sot 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 Mae Sot peaks around August 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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 18UV 8
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar11Extreme
Apr11Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec8Very high

Air quality in Mae Sot 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 Mae Sot is worst in March — around 112 µg/m³ PM2.5 (unhealthy), about 10.0× the cleanest month (June, 11 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyModerateGoodGoodModerateMar 17104 µg/m³Jun 2211 µg/m³
PM2.5 (µg/m³)Level
Jan28Moderate
Feb43Poor
Mar112Unhealthy
Apr47Poor
May18Moderate
Jun11Good
Jul12Good
Aug12Moderate
Sep12Good
Oct14Moderate
Nov17Moderate
Dec22Moderate
Location & terrain

Where is Mae Sot?

Mae Sot sits at 16.7°N, 98.6°E, 213 m above sea level, in Thailand. The nearest listed city is Myawaddy, 7.0 km away.

Hpa-AnHmaw BiMawlamyine

Topography around Mae Sot

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

Within 3 km, the terrain around Mae Sot has only modest variations in elevation — a maximum elevation change of 33 m around an average of 213 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 693 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,097 m.

The land around Mae Sot is covered by cropland (39%) and artificial surfaces (35%) within 3 km, cropland (38%) and trees (36%) within 16 km, and trees (74%) within 80 km.

3 km
33 m
16 km
693 m
80 km
2,097 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Myawaddy 7.0 km · Mae Ramat 30 km · Kawkareik 39 km · Tak 62 km · Ban Tak 66 km · Hpa-An 101 km · Hmaw Bi 102 km · Mawlamyine 103 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 Mae Sot (16.7167°, 98.5667°, elevation 213 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).