Nakhon Nayok weather in September

In September, Nakhon Nayok sees average daytime highs of 30°C and overnight lows near 24°C, with 358 mm of rain across 27.5 wet days and about 12.1 hours of daylight. It is the 11th-warmest and 1st-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 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 Nakhon Nayok's 9th-clearest and 11th-windiest month. For the whole year in context, see Nakhon Nayok's year-round climate.

Daytime high
30°
11th warmest
Overnight low
24°
7th coldest
Rainfall
358 mm
27.5 wet days
Daylight
12 h 06 min
6:07 AM – 6:12 PM
Cloud cover
88%
9th clearest
Wind
5 km/h
11th windiest
Solar energy
4.18 kWh/m²
Travel score
2.6
out of 10

Nakhon Nayok is town in Nakhon Nayok 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 30°C through the month.

A typical September day in Nakhon Nayok reaches about 30°C in the afternoon and slips back to 24°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 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)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113024
123024
133024
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293124
303124

How September really feels in Nakhon Nayok

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.

Nakhon Nayok weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 20°12311.35.7
Feb32° / 21°173.511.54.9
Mar33° / 23°50911.93.7
Apr34° / 24°8614.712.32.7
May33° / 25°19624.612.62.3
Jun31° / 24°25426.912.82.4
Jul31° / 24°29328.112.82.6
Aug31° / 24°30528.412.52.5
Sep30° / 24°35827.512.12.6
Oct31° / 23°21620.411.73.5
Nov31° / 22°396.411.35.0
Dec30° / 20°81.911.26.0

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 (%)
1595
2595
3595
4595
5595
6496
7496
8496
9496
10496
11496
12496
13496
14496
15694
16694
17694
18694
19892
20892
211090
221090
231189
241189
251189
261387
271387
281387
291486
301486

Chance of precipitation in September

Any precipitation

Nakhon Nayok gets around 358 mm of rain over 27.5 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 92% and peaks near 94% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
193
293
393
494
594
694
794
894
994
1094
1194
1293
1393
1493
1593
1692
1792
1891
1991
2090
2190
2290
2390
2490
2590
2689
2789
2889
2989
3089

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 62% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
103862
203862
303961
403961
503961
603961
703961
803961
903961
1003961
1103961
1203862
1303862
1403862
1503862
1603862
1703862
1803763
1903763
2003664
2103664
2203664
2303664
2403664
2503664
2603763
2703763
2803862
2903961
3014059

Wind in September

Winds average 5 km/h in September.

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
185calm
195calm
205calm
215calm
225calm
235calm
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 6:06 AM to 6:08 AM, and sunset from 6:23 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:066:23
212.36:076:22
312.36:076:22
412.26:076:21
512.26:076:20
612.26:076:20
712.26:076:19
812.26:076:18
912.26:076:17
1012.26:076:16
1112.16:076:16
1212.16:076:15
1312.16:076:14
1412.16:076:13
1512.16:076:13
1612.16:076:12
1712.16:076:11
1812.16:076:10
1912.06:076:09
2012.06:076:09
2112.06:076:08
2212.06:076:07
2312.06:076:06
2412.06:076:06
2512.06:086:05
2611.96:086:04
2711.96:086:03
2811.96:086:03
2911.96:086:02
3011.96:086:01

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.18 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.18 kWh/m² to a high of 5.9 kWh/m² in April across the year — September's 4.18 kWh/m² sits near the bottom.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.2Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.1Bright
254.1Bright
264.1Bright
274.1Bright
284.2Bright
294.2Bright
304.2Bright
Planning a trip in September

Hazard calendar for Nakhon Nayok

In seasonPeak

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

Nakhon Nayok'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 Nakhon Nayok?

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

2.6
Sightseeing
8th-best month of the year
3.8
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Nakhon Nayok.

What to pack for Nakhon Nayok in September

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

In September, Nakhon Nayok sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. About 28 days see rain.

light clothesrain gear

UV index in Nakhon Nayok 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 Nakhon Nayok peaks around August 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 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 14UV 13Nov 23UV 9
UV index (midday)Level
Jan9Very high
Feb10Extreme
Mar12Extreme
Apr11Extreme
May11Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct10Extreme
Nov9Very high
Dec9Very high

Air quality in Nakhon Nayok 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 Nakhon Nayok is worst in February — around 60 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (December, 34 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorPoorFeb 1759 µg/m³Dec 1035 µg/m³
PM2.5 (µg/m³)Level
Jan53Poor
Feb60Unhealthy
Mar56Unhealthy
Apr48Poor
May40Poor
Jun35Moderate
Jul35Poor
Aug36Poor
Sep40Poor
Oct41Poor
Nov36Poor
Dec34Moderate
Location & terrain

Where is Nakhon Nayok?

Nakhon Nayok sits at 14.2°N, 101.2°E, 12 m above sea level, in Thailand. The nearest listed city is Ban Phra, 23 km away.

Topography around Nakhon Nayok

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

Within 3 km, the terrain around Nakhon Nayok has only modest variations in elevation — a maximum elevation change of 25 m around an average of 7 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 735 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,364 m.

The land around Nakhon Nayok is covered by cropland (37%) and trees (34%) within 3 km, trees (44%) and cropland (43%) within 16 km, and trees (46%) and cropland (38%) within 80 km.

3 km
25 m
16 km
735 m
80 km
1,364 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Ban Phra 23 km · Ban Sang 23 km · Thambon Na Mueang 24 km · Prachin Buri Town 24 km · Prachin Buri 24 km · Prachantakham 36 km · Nong Khae 40 km · Si Mahosot 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 Nakhon Nayok (14.2046°, 101.213°, elevation 12 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).