Tha Yang weather in September

In September, Tha Yang sees average daytime highs of 30°C and overnight lows near 26°C, with 151 mm of rain across 20.9 wet days and about 12.1 hours of daylight. It is the 7th-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 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 Tha Yang's 9th-clearest and 12th-windiest month. For the whole year in context, see Tha Yang's year-round climate.

Daytime high
30°
7th warmest
Overnight low
26°
7th coldest
Rainfall
151 mm
20.9 wet days
Daylight
12 h 06 min
6:13 AM – 6:17 PM
Cloud cover
86%
9th clearest
Wind
8 km/h
12th windiest
Solar energy
4.62 kWh/m²
Travel score
3.2
out of 10

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 Tha Yang reaches about 30°C in the afternoon and slips back to 26°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

25°28°30°33°35°151015202530
Avg high (°C)Avg low (°C)
13127
23127
33127
43127
53127
63127
73127
83127
93127
103127
113127
123127
133127
143127
153127
163027
173026
183026
193026
203026
213026
223026
233026
243026
253026
263026
273026
283026
293026
303026

How September really feels in Tha Yang

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.

Tha Yang weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°142.311.36.9
Feb30° / 25°91.811.66.4
Mar31° / 26°42511.95.3
Apr32° / 28°538.712.34.1
May32° / 28°9317.212.63.1
Jun32° / 27°6615.412.73.2
Jul31° / 27°8317.112.73.3
Aug31° / 27°9118.712.43.4
Sep30° / 26°15120.912.13.2
Oct30° / 26°24822.611.73.7
Nov30° / 25°637.711.45.5
Dec29° / 24°142.111.36.8

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 91%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1793
2892
3892
4892
5892
6892
7892
8793
9793
10793
11793
12694
13694
14694
15793
16892
17892
18892
19892
20991
21991
22991
231090
241090
251090
261189
271189
281288
291288
301288

Chance of precipitation in September

Any precipitation

Tha Yang gets around 151 mm of rain over 20.9 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 71% and peaks near 81% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
165
265
365
465
565
665
765
865
966
1066
1167
1267
1368
1469
1570
1671
1772
1873
1974
2074
2175
2276
2376
2477
2577
2678
2779
2880
2980
3081

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 69% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
17822
27822
37822
47723
57723
67723
77822
87822
97822
107723
117723
127723
137624
147525
157426
167327
177228
187030
196931
206733
216535
226337
236139
246040
255842
265644
275545
285446
295347
305248

Wind in September

Winds average 8 km/h in September, the calmest month.

Across September, daily wind ranges from about 8 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
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 6:12 AM to 6:13 AM, and sunset from 6:28 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:126:28
212.26:136:27
312.26:136:26
412.26:136:26
512.26:136:25
612.26:136:24
712.26:136:23
812.26:136:23
912.26:136:22
1012.16:136:21
1112.16:136:21
1212.16:136:20
1312.16:136:19
1412.16:136:18
1512.16:136:18
1612.16:136:17
1712.16:136:16
1812.06:136:15
1912.06:136:15
2012.06:136:14
2112.06:136:13
2212.06:136:12
2312.06:136:12
2412.06:136:11
2512.06:136:10
2611.96:136:09
2711.96:136:09
2811.96:136:08
2911.96:136:07
3011.96:136:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.62 kWh/m².

For context, solar energy here swings from a low near 4.5 kWh/m² to a high of 6.36 kWh/m² in April across the year — September's 4.62 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.4Bright
304.4Bright
Planning a trip in September

Hazard calendar for Tha Yang

In seasonPeak

In September, Tha Yang sits inside its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.

Tha Yang sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

Tha Yang's monsoon runs September–October, when most of the year's rain falls.

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

Is September a good time to visit Tha Yang?

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

3.2
Sightseeing
10th-best month of the year
4.6
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Tha Yang.

What to pack for Tha Yang in September

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

In September, Tha Yang sees daytime highs around 30°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

Sea temperature near Tha Yang in September

The nearest coast averages about 29°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 25 km away) is warmest in May at about 31°C and coldest in January near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul30Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Tha Yang 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 Tha Yang peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 16UV 14Jan 1UV 9
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Tha Yang 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 Tha Yang is worst in February — around 34 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (August, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateFeb 2234 µg/m³Aug 2014 µg/m³
PM2.5 (µg/m³)Level
Jan32Moderate
Feb34Moderate
Mar34Moderate
Apr31Moderate
May19Moderate
Jun14Moderate
Jul15Moderate
Aug14Moderate
Sep14Moderate
Oct22Moderate
Nov27Moderate
Dec29Moderate
Location & terrain

Where is Tha Yang?

Tha Yang sits at 13.0°N, 99.9°E, 11 m above sea level, in Thailand. The nearest listed city is Phetchaburi, 18 km away.

Topography around Tha Yang

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

Within 3 km, the terrain around Tha Yang has only modest variations in elevation — a maximum elevation change of 95 m around an average of 13 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 550 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,501 m.

The land around Tha Yang is covered by cropland (42%) and trees (34%) within 3 km, cropland (39%) and trees (33%) within 16 km, and trees (49%) and water (34%) within 80 km.

3 km
95 m
16 km
550 m
80 km
1,501 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Phetchaburi 18 km · Cha-am 19 km · Khao Yoi 33 km · Hua Hin 43 km · Samut Songkhram 52 km · Damnoen Saduak 63 km · Pran Buri 64 km · Ratchaburi 65 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 Tha Yang (12.9577°, 99.9056°, elevation 11 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).