Lop Buri weather in September

In September, Lop Buri sees average daytime highs of 33°C and overnight lows near 26°C, with 251 mm of rain across 25.1 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 33°C through the month. The sky is clear or mostly clear about 4% 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 Lop Buri's 9th-clearest and 12th-windiest month. For the whole year in context, see Lop Buri's year-round climate.

Daytime high
33°
9th warmest
Overnight low
26°
7th coldest
Rainfall
251 mm
25.1 wet days
Daylight
12 h 06 min
6:09 AM – 6:14 PM
Cloud cover
84%
9th clearest
Wind
7 km/h
12th windiest
Solar energy
4.57 kWh/m²
Travel score
2.2
out of 10

Lop Buri is capital city of Lopburi 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 33°C through the month.

A typical September day in Lop Buri reaches about 33°C in the afternoon and slips back to 26°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 35°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13326
23326
33326
43326
53326
63326
73326
83326
93326
103326
113326
123326
133326
143326
153326
163326
173326
183326
193326
203326
213226
223226
233226
243226
253226
263226
273226
283226
293226
303226

How September really feels in Lop Buri

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
30 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.

Lop Buri 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
Jan33° / 22°102.411.24.3
Feb35° / 23°132.611.53.2
Mar36° / 25°396.911.92.2
Apr37° / 27°7212.212.31.5
May35° / 27°15521.712.71.6
Jun34° / 27°16023.312.91.8
Jul34° / 26°16623.912.82.0
Aug33° / 26°19825.612.52.1
Sep33° / 26°25125.112.12.2
Oct32° / 25°13216.411.73.2
Nov33° / 24°274.411.34.2
Dec32° / 22°71.511.14.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 9% of September, with mostly cloudy or overcast conditions the remaining 87%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1793
2793
3793
4793
5793
6793
7793
8892
9991
10991
11991
121090
131090
141189
151288
161387
171387
181387
191387
201684
211684
221684
231684
241684
251882
261882
271882
281981
291981
302080

Chance of precipitation in September

Any precipitation

Lop Buri gets around 251 mm of rain over 25.1 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 84% and peaks near 87% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
187
287
387
487
587
687
787
887
986
1086
1186
1286
1386
1486
1585
1685
1785
1884
1984
2083
2183
2282
2382
2481
2581
2681
2780
2880
2979
3079

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

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
101486
201486
301387
401387
501387
601387
701387
801387
901387
1001387
1101387
1201387
1301387
1401387
1501387
1601387
1701288
1801288
1901288
2001189
2101189
2201189
2301189
2401189
2501189
2601189
2701288
2811287
2911386
3011485

Wind in September

Winds average 7 km/h in September, the calmest month.

Across September, daily wind ranges from about 6 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
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
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 6:08 AM to 6:10 AM, and sunset from 6:26 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:086:26
212.36:086:25
312.36:096:24
412.26:096:24
512.26:096:23
612.26:096:22
712.26:096:21
812.26:096:20
912.26:096:20
1012.26:096:19
1112.26:096:18
1212.16:096:17
1312.16:096:17
1412.16:096:16
1512.16:096:15
1612.16:096:14
1712.16:096:13
1812.16:096:13
1912.06:096:12
2012.06:096:11
2112.06:106:10
2212.06:106:09
2312.06:106:09
2412.06:106:08
2512.06:106:07
2611.96:106:06
2711.96:106:05
2811.96:106:05
2911.96:106:04
3011.96:106:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.57 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.57 kWh/m² to a high of 6.16 kWh/m² in April across the year — September's 4.57 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.5Bright
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
294.5Bright
304.5Bright
Planning a trip in September

Hazard calendar for Lop Buri

In seasonPeak

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

Lop Buri'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 Lop Buri?

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

2.2
Sightseeing
6th-best month of the year
3.8
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Lop Buri.

What to pack for Lop Buri in September

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

In September, Lop Buri sees daytime highs around 33°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

UV index in Lop Buri 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 Lop Buri peaks around August 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 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 highExtremeExtremeVery highAug 14UV 13Dec 11UV 8
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr11Extreme
May10Very high
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec8Very high

Air quality in Lop Buri 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 Lop Buri is worst in February — around 60 µg/m³ PM2.5 (unhealthy), about 2.0× the cleanest month (June, 30 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorFeb 1960 µg/m³Jun 2330 µg/m³
PM2.5 (µg/m³)Level
Jan58Unhealthy
Feb60Unhealthy
Mar60Unhealthy
Apr52Poor
May41Poor
Jun30Moderate
Jul30Moderate
Aug30Moderate
Sep37Poor
Oct44Poor
Nov43Poor
Dec44Poor
Location & terrain

Where is Lop Buri?

Lop Buri sits at 14.8°N, 100.7°E, 20 m above sea level, in Thailand. The nearest listed city is Phra Phutthabat, 17 km away.

Topography around Lop Buri

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

Within 3 km, the terrain around Lop Buri has only modest variations in elevation — a maximum elevation change of 22 m around an average of 18 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 507 m; within 80 km, large variations in elevation — a maximum elevation change of 1,104 m.

The land around Lop Buri is covered by trees (38%) and artificial surfaces (36%) within 3 km, cropland (58%) and trees (29%) within 16 km, and cropland (67%) and trees (25%) within 80 km.

3 km
22 m
16 km
507 m
80 km
1,104 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Phra Phutthabat 17 km · Ban Mo 22 km · Tha Ruea 27 km · Sing Buri 29 km · Nakhon Luang 38 km · Bang Racham 38 km · Wiset Chaichan 41 km · Saraburi 41 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 Lop Buri (14.7981°, 100.654°, elevation 20 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).