Bang Lamung weather in September

In September, Bang Lamung sees average daytime highs of 31°C and overnight lows near 26°C, with 242 mm of rain across 25.7 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 Bang Lamung's 11th-clearest and 11th-windiest month. For the whole year in context, see Bang Lamung's year-round climate.

Daytime high
31°
9th warmest
Overnight low
26°
7th coldest
Rainfall
242 mm
25.7 wet days
Daylight
12 h 06 min
6:08 AM – 6:13 PM
Cloud cover
88%
11th clearest
Wind
8 km/h
11th windiest
Solar energy
4.63 kWh/m²
Travel score
2.6
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 Bang Lamung reaches about 31°C in the afternoon and slips back to 26°C overnight — a 5°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 on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13126
23126
33126
43126
53126
63126
73126
83126
93126
103126
113126
123126
133126
143126
153126
163126
173126
183126
193126
203126
213126
223126
233126
243126
253126
263126
273126
283126
293126
303126

How September really feels in Bang Lamung

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
9 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.

Bang Lamung 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° / 23°275.611.35.1
Feb31° / 24°265.811.64.8
Mar32° / 26°6311.511.94.0
Apr33° / 27°9014.512.33.2
May33° / 27°15222.312.62.6
Jun32° / 27°14222.912.82.6
Jul31° / 27°15424.412.72.7
Aug31° / 27°15324.612.42.7
Sep31° / 26°24225.712.12.6
Oct31° / 25°22123.511.73.1
Nov31° / 24°538.111.44.6
Dec31° / 23°143.211.25.4

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 5% of September, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1793
2793
3793
4793
5793
6793
7793
8793
9793
10694
11694
12694
13694
14694
15694
16694
17694
18694
19694
20793
21793
22793
23793
24793
25892
26892
27793
28793
29892
30892

Chance of precipitation in September

Any precipitation

Bang Lamung gets around 242 mm of rain over 25.7 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 87% and peaks near 92% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
180
280
380
481
581
682
782
883
984
1085
1185
1286
1387
1487
1588
1688
1788
1889
1989
2089
2189
2290
2390
2490
2590
2690
2791
2891
2991
3092

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 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1793
2793
3793
4793
5793
6793
7793
8793
9793
10892
11892
12793
13793
14793
15793
16793
17694
18694
19694
20595
21595
22595
23496
24496
25496
26496
27595
28595
29595
30595

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:08 AM to 6:09 AM, and sunset from 6:24 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:086:24
212.26:086:23
312.26:086:22
412.26:086:22
512.26:086:21
612.26:086:20
712.26:086:19
812.26:086:19
912.26:086:18
1012.16:086:17
1112.16:086:16
1212.16:086:16
1312.16:086:15
1412.16:086:14
1512.16:086:14
1612.16:086:13
1712.16:086:12
1812.06:086:11
1912.06:086:11
2012.06:086:10
2112.06:086:09
2212.06:086:08
2312.06:086:08
2412.06:096:07
2512.06:096:06
2611.96:096:05
2711.96:096:05
2811.96:096:04
2911.96:096:03
3011.96:096:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.63 kWh/m².

For context, solar energy here swings from a low near 4.63 kWh/m² to a high of 6.05 kWh/m² in April across the year — September's 4.63 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.7Bright
104.7Bright
114.7Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Hazard calendar for Bang Lamung

In seasonPeak

In September, Bang Lamung sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

Bang Lamung sits in the Pacific typhoon belt; the season peaks July–October.

Bang Lamung's rainy season runs May–October, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Bang Lamung?

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

2.6
Sightseeing
10th-best month of the year
3.9
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Bang Lamung.

What to pack for Bang Lamung in September

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

In September, Bang Lamung sees daytime highs around 31°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

Sea temperature near Bang Lamung 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 offshore is warmest in May at about 31°C and coldest in January near 28°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
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul30Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Bang Lamung 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 Bang Lamung peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 14Dec 17UV 9
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct10Very high
Nov9Very high
Dec9Very high

Air quality in Bang Lamung 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 Bang Lamung is worst in January — around 39 µg/m³ PM2.5 (poor), about 2.3× the cleanest month (June, 17 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateJan 2439 µg/m³Jun 2017 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb39Poor
Mar29Moderate
Apr26Moderate
May20Moderate
Jun17Moderate
Jul18Moderate
Aug17Moderate
Sep21Moderate
Oct31Moderate
Nov30Moderate
Dec29Moderate
Location & terrain

Where is Bang Lamung?

Bang Lamung sits at 13.0°N, 100.9°E, 7 m above sea level, in Thailand. The nearest listed city is Ban Talat Bueng, 8.0 km away.

Topography around Bang Lamung

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

Within 3 km, the terrain around Bang Lamung has only modest variations in elevation — a maximum elevation change of 27 m around an average of 7 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 362 m; within 80 km, large variations in elevation — a maximum elevation change of 874 m.

The land around Bang Lamung is covered by artificial surfaces (35%) and trees (20%) within 3 km, water (38%), artificial surfaces (24%) and trees (22%) within 16 km, and water (49%) and trees (31%) within 80 km.

3 km
27 m
16 km
362 m
80 km
874 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Ban Talat Bueng 8.0 km · Pattaya 14 km · Si Racha 14 km · Ban Ang Sila 33 km · Chon Buri 36 km · Ban Bueng 36 km · Ban Chang 38 km · Sattahip 42 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 Bang Lamung (13.047°, 100.9289°, elevation 7 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).