Tambunan weather in September

In September, Tambunan sees average daytime highs of 27°C and overnight lows near 18°C, with 230 mm of rain across 24.6 wet days and about 12 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 2% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Tambunan's 9th-clearest and 7th-windiest month. For the whole year in context, see Tambunan's year-round climate.

Daytime high
27°
5th warmest
Overnight low
18°
3rd coldest
Rainfall
230 mm
24.6 wet days
Daylight
12 hours
6:08 AM – 6:10 PM
Cloud cover
86%
9th clearest
Wind
4 km/h
7th windiest
Solar energy
5.41 kWh/m²
Travel score
4.0
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Tambunan reaches about 27°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 28°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12718
22718
32718
42718
52718
62718
72718
82718
92718
102718
112718
122718
132718
142718
152718
162718
172718
182718
192718
202718
212718
222718
232718
242718
252718
262718
272718
282718
292718
302718

Tambunan weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 18°1812111.74.7
Feb26° / 18°13116.611.85.1
Mar27° / 18°15119.4124.9
Apr28° / 19°17921.112.14.5
May27° / 19°24825.412.34.0
Jun27° / 18°24424.312.34.1
Jul26° / 18°21122.812.34.4
Aug27° / 18°22823.712.24.3
Sep27° / 18°23024.6124.0
Oct26° / 18°2762811.93.7
Nov26° / 18°24026.311.73.8
Dec26° / 18°21525.211.74.1

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

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1892
2892
3892
4892
5892
6892
7892
8793
9793
10793
11793
12793
13793
14694
15694
16694
17694
18694
19793
20793
21793
22793
23793
24892
25793
26793
27793
28793
29892
30892

Chance of precipitation in September

Any precipitation

Tambunan gets around 230 mm of rain over 24.6 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 82% and peaks near 86% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
181
281
381
482
582
682
783
883
983
1083
1183
1283
1383
1483
1582
1682
1782
1881
1981
2081
2181
2281
2382
2482
2583
2683
2784
2884
2985
3086

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the muggy band about 83% of days. Sticky, muggy-or-worse air turns up on roughly 83% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)
11486
21585
31684
41684
51783
61783
71882
81882
91981
101981
111981
121981
132080
142080
152080
161981
171981
181981
191882
201882
211783
221783
231684
241684
251585
261486
271486
281486
291387
301387

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over September. Sunrise moves from 6:11 AM to 6:05 AM, and sunset from 6:17 PM to 6:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:116:17
212.16:116:17
312.16:106:16
412.16:106:16
512.16:106:15
612.16:106:15
712.16:106:14
812.16:096:14
912.16:096:13
1012.16:096:13
1112.16:096:12
1212.16:096:12
1312.06:086:11
1412.06:086:11
1512.06:086:10
1612.06:086:10
1712.06:086:09
1812.06:076:09
1912.06:076:08
2012.06:076:08
2112.06:076:07
2212.06:076:06
2312.06:066:06
2412.06:066:05
2512.06:066:05
2612.06:066:04
2712.06:066:04
2812.06:056:03
2912.06:056:03
3012.06:056:02

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.41 kWh/m².

For context, solar energy here swings from a low near 4.36 kWh/m² to a high of 5.78 kWh/m² in April across the year — September's 5.41 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.2Bright
Planning a trip in September

Hazard calendar for Tambunan

In seasonPeak

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

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

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

Is September a good time to visit Tambunan?

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

4.0
Sightseeing
9th-best month of the year
4.0
Beach & pool
9th-best month of the year

September is a reasonable time to visit Tambunan for sightseeing.

What to pack for Tambunan in September

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

In September, Tambunan sees daytime highs around 27°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 25 days see rain.

rain gearlight clothessun protection

Sea temperature near Tambunan 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 55 km away) is warmest in June at about 30°C and coldest in February near 27°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
Feb27Warm
Mar28Warm
Apr29Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct30Tropical
Nov29Tropical
Dec29Tropical

UV index in Tambunan in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tambunan peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Dec 12UV 11
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr15Extreme
May15Extreme
Jun13Extreme
Jul12Extreme
Aug14Extreme
Sep14Extreme
Oct13Extreme
Nov12Extreme
Dec11Extreme

Air quality in Tambunan 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 Tambunan is worst in September — around 16 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (December, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1416 µg/m³Dec 1710 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar13Moderate
Apr13Moderate
May13Moderate
Jun13Moderate
Jul14Moderate
Aug14Moderate
Sep16Moderate
Oct13Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Tambunan?

Tambunan sits at 5.7°N, 116.4°E, 630 m above sea level, in Malaysia. The nearest listed city is Donggongon, 39 km away.

Topography around Tambunan

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

Within 3 km, the terrain around Tambunan has significant variations in elevation — a maximum elevation change of 419 m around an average of 704 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,613 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,023 m.

The land around Tambunan is covered by trees (68%) within 3 km, trees (95%) within 16 km, and trees (81%) within 80 km.

3 km
419 m
16 km
1,613 m
80 km
4,023 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Donggongon 39 km · Ranau 39 km · Kinarut 41 km · Putatan 44 km · Petagas 44 km · Kota Kinabalu 46 km · Keningau 50 km · Papar 52 km

Malaysia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / G / M
230 V · 50 Hz
Prices
≈ 32% of US
price level, 2025
GDP per capita
$13,125
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
95%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
22.5
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 581
Religion
Muslim 64%Buddhist 19%Christian 9%Hindu 6%

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 Tambunan (5.7167°, 116.4°, elevation 630 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).