Simpang weather in September

In September, Simpang sees average daytime highs of 31°C and overnight lows near 24°C, with 166 mm of rain across 17.6 wet days and about 12 hours of daylight. It is the 1st-warmest and 9th-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 6% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Simpang's 4th-clearest and 6th-windiest month. For the whole year in context, see Simpang's year-round climate.

Daytime high
31°
1st warmest
Overnight low
24°
9th coldest
Rainfall
166 mm
17.6 wet days
Daylight
12 hours
5:58 AM – 5:58 PM
Cloud cover
78%
4th clearest
Wind
6 km/h
6th windiest
Solar energy
5.51 kWh/m²
Travel score
3.3
out of 10

Simpang is subdistrict in East Tanjung Jabung Regency, Jambi, Indonesia.

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 31°C through the month.

A typical September day in Simpang reaches about 31°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 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)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113124
123124
133224
143224
153224
163224
173224
183224
193224
203224
213224
223224
233224
243224
253224
263224
273224
283124
293124
303124

How September really feels in Simpang

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.

Simpang weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°27527.312.13.0
Feb30° / 24°21923.2123.0
Mar31° / 24°28328.2122.6
Apr31° / 24°28728.5122.3
May31° / 24°22427.311.92.5
Jun31° / 24°15121.211.93.1
Jul31° / 24°14419.411.93.4
Aug31° / 24°14118.9123.4
Sep31° / 24°16617.6123.3
Oct31° / 24°27325.3122.7
Nov31° / 24°32128.712.12.4
Dec30° / 24°32728.812.12.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 80%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12278
22278
32278
42278
52377
62377
72377
82377
92278
102179
112179
122179
132179
142179
152080
162080
172080
181981
191981
201882
211882
221882
231882
241882
251981
261981
271882
281882
291783
301783

Chance of precipitation in September

Any precipitation

Simpang gets around 166 mm of rain over 17.6 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 60% and peaks near 67% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
164
263
362
461
560
659
758
857
956
1056
1156
1255
1355
1456
1556
1656
1757
1857
1958
2059
2159
2260
2361
2462
2562
2663
2764
2865
2966
3067

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
115841
215940
316039
416039
516138
616237
716336
816336
916435
1016435
1116534
1216534
1316534
1416435
1516435
1616336
1716237
1816138
1916039
2006040
2105941
2205941
2305842
2405743
2505743
2605644
2705545
2805545
2905446
3005347

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 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
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 hours at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over September. Sunrise moves from 6:04 AM to 5:53 AM, and sunset from 6:03 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:046:03
212.06:046:02
312.06:036:02
412.06:036:02
512.06:036:01
612.06:026:01
712.06:026:01
812.06:016:00
912.06:016:00
1012.06:016:00
1112.06:005:59
1212.06:005:59
1312.05:595:59
1412.05:595:58
1512.05:595:58
1612.05:585:58
1712.05:585:57
1812.05:575:57
1912.05:575:57
2012.05:575:56
2112.05:565:56
2212.05:565:56
2312.05:555:55
2412.05:555:55
2512.05:555:55
2612.05:545:54
2712.05:545:54
2812.05:535:54
2912.05:535:54
3012.05:535:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.51 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.08 kWh/m² to a high of 5.51 kWh/m² in September across the year — September's 5.51 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.4Bright
295.4Bright
305.4Bright
Planning a trip in September

Is September a good time to visit Simpang?

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

3.3
Sightseeing
3rd-best month of the year
5.0
Beach & pool
3rd-best month of the year

September is a weaker month for outdoor sightseeing in Simpang.

What to pack for Simpang in September

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

In September, Simpang sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

Sea temperature near Simpang 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 43 km away) is warmest in May at about 30°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
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Simpang 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 Simpang peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 18UV 15Jun 23UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug12Extreme
Sep12Extreme
Oct14Extreme
Nov11Extreme
Dec11Extreme

Air quality in Simpang 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 Simpang is worst in September — around 136 µg/m³ PM2.5 (unhealthy), about 9.4× the cleanest month (January, 15 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyModerateSep 20132 µg/m³Jan 1315 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb15Moderate
Mar16Moderate
Apr17Moderate
May18Moderate
Jun22Moderate
Jul40Poor
Aug77Unhealthy
Sep136Unhealthy
Oct115Unhealthy
Nov22Moderate
Dec15Moderate
Location & terrain

Where is Simpang?

Simpang sits at 1.3°S, 104.1°E, 5 m above sea level, in Indonesia. The nearest listed city is Mendaha, 62 km away.

Topography around Simpang

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

Within 3 km, the terrain around Simpang has only modest variations in elevation — a maximum elevation change of 14 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 36 m; within 80 km, only modest variations in elevation — a maximum elevation change of 118 m.

The land around Simpang is covered by cropland (33%), grassland (29%) and trees (26%) within 3 km, trees (66%) within 16 km, and trees (48%) and water (41%) within 80 km.

3 km
14 m
16 km
36 m
80 km
118 m
treesshrubsgrasslandcroplandwatermangroves
September weather nearby: Mendaha 62 km · Jambi City 65 km · Kuala Tungkal 86 km · Muntok 148 km · Palembang 197 km · Muara Bungo 222 km · Indralaya 230 km · Sungailiat 234 km

Indonesia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,060
2025
Happiness
5.6 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
0.3
per 100k, 2022
Road deaths
11.3
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 471
Religion
Muslim 87%Protestant 8%Roman Catholic 3%Hindu 2%

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 Simpang (-1.2642°, 104.097°, elevation 5 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. 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).