Lombok weather in September

In September, Lombok sees average daytime highs of 29°C and overnight lows near 24°C, with 15 mm of rain across 2.1 wet days and about 11.9 hours of daylight. It is the 6th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 50% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Lombok's 2nd-clearest and 1st-windiest month. For the whole year in context, see Lombok's year-round climate.

Daytime high
29°
6th warmest
Overnight low
24°
3rd coldest
Rainfall
15 mm
2.1 wet days
Daylight
12 hours
6:11 AM – 6:08 PM
Cloud cover
44%
2nd clearest
Wind
14 km/h
1st windiest
Solar energy
6.64 kWh/m²
Travel score
6.7
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Lombok reaches about 29°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
152924
162924
172924
182924
192924
202924
212924
222924
232924
242924
252924
262924
272924
282924
292924
302925

How September really feels in Lombok

Once humidity and wind are folded in, September averages 7 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
7
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.

Lombok weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 25°24827.612.43.4
Feb28° / 25°21425.212.33.3
Mar29° / 26°21825.512.13.6
Apr29° / 26°15918.811.84.2
May29° / 25°487.911.65.6
Jun29° / 25°294.611.56.3
Jul29° / 24°172.811.66.7
Aug29° / 23°51.211.77.0
Sep29° / 24°152.111.96.7
Oct29° / 25°477.312.25.8
Nov29° / 26°15719.312.44.2
Dec28° / 26°26626.912.53.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 22% of September, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17525
27525
37624
47624
57624
67624
77624
87525
97624
107624
117624
127624
137525
147426
157426
167426
177327
187327
197228
207228
217129
227030
237030
246931
256832
266733
276634
286634
296535
306535

Chance of precipitation in September

Any precipitation

Lombok gets around 15 mm of rain over 2.1 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 8% and peaks near 12% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
14
24
34
44
54
64
74
84
94
104
115
125
136
146
157
168
178
189
199
2010
2110
2211
2311
2411
2511
2612
2712
2812
2912
3012

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 68% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1241570
2240580
3239590
4238600
5137620
6137620
7136630
8135640
9135640
10134641
11133651
12133651
13132661
14131671
15031681
16030682
17030682
18029692
19028702
20027712
21026713
22024733
23023743
24022744
25021754
26020764
27019765
28018775
29016795
30015796

Wind in September

Winds average 14 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 14 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over September. Sunrise moves from 6:20 AM to 6:03 AM, and sunset from 6:10 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:206:10
211.86:206:10
311.86:196:10
411.96:196:10
511.96:186:10
611.96:176:10
711.96:176:10
811.96:166:09
911.96:166:09
1011.96:156:09
1111.96:146:09
1211.96:146:09
1311.96:136:09
1411.96:126:09
1511.96:126:09
1612.06:116:08
1712.06:116:08
1812.06:106:08
1912.06:096:08
2012.06:096:08
2112.06:086:08
2212.06:086:08
2312.06:076:08
2412.06:066:07
2512.06:066:07
2612.06:056:07
2712.06:056:07
2812.16:046:07
2912.16:036:07
3012.16:036:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.64 kWh/m².

For context, solar energy here swings from a low near 5.22 kWh/m² to a high of 6.83 kWh/m² in October across the year — September's 6.64 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.6Intense
116.6Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.7Intense
176.7Intense
186.7Intense
196.7Intense
206.7Intense
216.7Intense
226.7Intense
236.7Intense
246.7Intense
256.8Intense
266.8Intense
276.8Intense
286.8Intense
296.8Intense
306.8Intense
Planning a trip in September

Hazard calendar for Lombok

In seasonPeak

None of Lombok's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Lombok sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Lombok's monsoon runs November–April, when most of the year's rain falls.

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

Is September a good time to visit Lombok?

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

6.7
Sightseeing
2nd-best month of the year
8.5
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Lombok for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Lombok in September

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

In September, Lombok sees daytime highs around 29°C and nights near 24°C. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Lombok in September

The nearest coast averages about 27°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in April at about 29°C and coldest in August near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun28Tropical
Jul28Warm
Aug27Warm
Sep27Warm
Oct28Tropical
Nov29Tropical
Dec29Tropical

UV index in Lombok 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 Lombok peaks around March 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 12UV 14Jun 18UV 9
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar14Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul10Very high
Aug12Extreme
Sep13Extreme
Oct12Extreme
Nov11Extreme
Dec13Extreme

Air quality in Lombok 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 Lombok is worst in October — around 22 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (April, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateOct 2022 µg/m³Apr 1613 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb14Moderate
Mar14Moderate
Apr13Moderate
May14Moderate
Jun14Moderate
Jul13Moderate
Aug14Moderate
Sep18Moderate
Oct22Moderate
Nov21Moderate
Dec15Moderate
Location & terrain

Where is Lombok?

Lombok sits at 8.6°S, 116.1°E, 24 m above sea level, in Indonesia. The nearest listed city is Praya, 22 km away.

Topography around Lombok

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

Within 3 km, the terrain around Lombok has only modest variations in elevation — a maximum elevation change of 47 m around an average of 22 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,461 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,635 m.

The land around Lombok is covered by artificial surfaces (63%) and trees (22%) within 3 km, trees (48%) and water (27%) within 16 km, and water (69%) and trees (22%) within 80 km.

3 km
47 m
16 km
1,461 m
80 km
3,635 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Praya 22 km · Gili Trawangan 27 km · Selong 46 km · Amlapura 57 km · Amlapura city 58 km · Bedugul 60 km · Klungkung 79 km · Taliwang 83 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 Lombok (-8.5833°, 116.1167°, elevation 24 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).