Ron Phibun weather in September

In September, Ron Phibun sees average daytime highs of 31°C and overnight lows near 23°C, with 248 mm of rain across 27.1 wet days and about 12 hours of daylight. It is the 8th-warmest and 3rd-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 oppressive.

Daylight stretches from about 12 h 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Ron Phibun's 11th-clearest and 8th-windiest month. For the whole year in context, see Ron Phibun's year-round climate.

Daytime high
31°
8th warmest
Overnight low
23°
7th coldest
Rainfall
248 mm
27.1 wet days
Daylight
12 hours
6:14 AM – 6:16 PM
Cloud cover
86%
11th clearest
Wind
6 km/h
8th windiest
Solar energy
4.83 kWh/m²
Travel score
2.5
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 Ron Phibun reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°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)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123

How September really feels in Ron Phibun

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.

Ron Phibun weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°8914.611.64.4
Feb31° / 22°519.711.74.2
Mar33° / 23°12113.911.93.3
Apr34° / 24°15019.712.22.4
May33° / 24°19925.712.42.2
Jun32° / 24°17023.812.52.6
Jul31° / 23°18325.212.42.7
Aug31° / 23°21226.412.32.6
Sep31° / 23°24827.1122.5
Oct31° / 23°31828.911.82.6
Nov30° / 23°27425.211.63.1
Dec29° / 22°16918.311.54.1

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 92%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1991
2892
3892
4892
5892
6892
7892
8892
9892
10892
11892
12892
13892
14892
15892
16892
17892
18892
19892
20892
21892
22892
23892
24892
25793
26793
27793
28694
29694
30694

Chance of precipitation in September

Any precipitation

Ron Phibun gets around 248 mm of rain over 27.1 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 91% and peaks near 95% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
188
289
389
489
588
688
788
889
989
1089
1189
1289
1389
1489
1590
1690
1790
1890
1991
2091
2192
2292
2393
2493
2593
2694
2794
2894
2994
3095

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 71% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
17129
27129
37129
47129
57129
67129
77129
87228
97228
107228
117228
127327
137327
147327
157327
167327
177228
187228
197228
207228
217228
227228
237129
247129
257129
267129
277129
287129
297129
307129

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 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 18 minutes over September. Sunrise moves from 6:16 AM to 6:12 AM, and sunset from 6:25 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:166:25
212.26:156:24
312.16:156:24
412.16:156:23
512.16:156:23
612.16:156:22
712.16:156:22
812.16:156:21
912.16:156:20
1012.16:146:20
1112.16:146:19
1212.16:146:19
1312.16:146:18
1412.16:146:17
1512.16:146:17
1612.06:146:16
1712.06:136:16
1812.06:136:15
1912.06:136:14
2012.06:136:14
2112.06:136:13
2212.06:136:13
2312.06:136:12
2412.06:126:11
2512.06:126:11
2612.06:126:10
2712.06:126:10
2812.06:126:09
2911.96:126:09
3011.96:126:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.83 kWh/m².

For context, solar energy here swings from a low near 3.79 kWh/m² to a high of 5.88 kWh/m² in March across the year — September's 4.83 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.5Bright
304.5Bright
Planning a trip in September

Hazard calendar for Ron Phibun

In seasonPeak

In September, Ron Phibun sits inside its cyclone season. The full year is below, with each hazard's peak months called out.

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

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

Is September a good time to visit Ron Phibun?

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

2.5
Sightseeing
10th-best month of the year
3.7
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Ron Phibun.

What to pack for Ron Phibun in September

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

In September, Ron Phibun sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

Sea temperature near Ron Phibun in September

The nearest coast averages about 30°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 58 km away) 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
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Ron Phibun in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ron Phibun peaks around March 24 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 24UV 13Jan 10UV 10
UV index (midday)Level
Jan10Extreme
Feb13Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun12Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov10Extreme
Dec10Extreme

Air quality in Ron Phibun 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 Ron Phibun is worst in April — around 28 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1727 µg/m³Aug 1722 µg/m³
PM2.5 (µg/m³)Level
Jan24Moderate
Feb22Moderate
Mar24Moderate
Apr28Moderate
May25Moderate
Jun26Moderate
Jul24Moderate
Aug22Moderate
Sep24Moderate
Oct26Moderate
Nov25Moderate
Dec22Moderate
Location & terrain

Where is Ron Phibun?

Ron Phibun sits at 8.2°N, 99.9°E, 37 m above sea level, in Thailand. The nearest listed city is Thung Song, 19 km away.

Topography around Ron Phibun

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

Within 3 km, the terrain around Ron Phibun has significant variations in elevation — a maximum elevation change of 291 m around an average of 58 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,106 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,772 m.

The land around Ron Phibun is covered by trees (90%) within 3 km, trees (87%) within 16 km, and trees (68%) and water (24%) within 80 km.

3 km
291 m
16 km
1,106 m
80 km
1,772 m
treesgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: Thung Song 19 km · Nakhon Si Thammarat 31 km · Pak Phanang 43 km · Huai Yot 50 km · Phatthalung 67 km · Ranot 68 km · Trang 74 km · Ban Na San 88 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 Ron Phibun (8.1791°, 99.8542°, elevation 37 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).