Sumbawa Besar weather in April

In April, Sumbawa Besar sees average daytime highs of 30°C and overnight lows near 24°C, with 106 mm of rain across 17 wet days and about 11.8 hours of daylight. It is the 6th-warmest and 5th-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 24% of the time in April, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of April to 11 h 42 min by month's end. Set against the rest of the year, April is Sumbawa Besar's 8th-clearest and 9th-windiest month. For the whole year in context, see Sumbawa Besar's year-round climate.

Daytime high
30°
6th warmest
Overnight low
24°
8th coldest
Rainfall
106 mm
17 wet days
Daylight
11 h 48 min
6:16 AM – 6:05 PM
Cloud cover
65%
8th clearest
Wind
6 km/h
9th windiest
Solar energy
5.4 kWh/m²
Travel score
4.2
out of 10

Sumbawa Besar is place in Lesser Sunda Islands, Indonesia.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical April day in Sumbawa Besar reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, April runs on par with March and on par with May.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024

How April really feels in Sumbawa Besar

Once humidity and wind are folded in, April 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 April is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Sumbawa Besar weather by month

How April compares with the rest of the year at a glance. April is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°33829.112.43.0
Feb29° / 24°31726.412.33.1
Mar29° / 24°23525.312.13.4
Apr30° / 24°1061711.84.2
May30° / 23°31711.65.4
Jun30° / 23°143.311.56.1
Jul29° / 22°61.611.66.5
Aug30° / 22°10.411.76.3
Sep31° / 23°51.2125.5
Oct32° / 24°224.812.24.7
Nov31° / 24°9414.712.43.7
Dec30° / 24°26426.612.53.1

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 18% of April, with mostly cloudy or overcast conditions the remaining 57%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13367
23367
33367
43268
53268
63367
73367
83466
93565
103664
113664
123763
133961
144060
154159
164159
174456
184456
194555
204852
214852
225050
235050
245149
255248
265446
275545
285644
295743
305743

Chance of precipitation in April

Any precipitation

Sumbawa Besar gets around 106 mm of rain over 17 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 57% and peaks near 75% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
175
275
374
474
574
674
773
872
971
1070
1168
1267
1365
1463
1561
1659
1756
1854
1951
2048
2146
2244
2341
2439
2537
2636
2734
2833
2931
3030

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the oppressive band about 83% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
108119
208119
308119
408119
508119
608119
708119
808119
908119
1018118
1118118
1218118
1318217
1418217
1528216
1628216
1728315
1828414
1928414
2038413
2138512
2238611
2348610
244879
254879
265878
275878
285887
296877
306877

Wind in April

Winds average 6 km/h in April.

Across April, daily wind ranges from about 5 km/h on the calmest days to 7 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
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 11 h 54 min at the start of April to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over April. Sunrise moves from 6:17 AM to 6:16 AM, and sunset from 6:13 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:176:13
211.96:176:12
311.96:176:12
411.96:176:11
511.96:176:11
611.96:176:10
711.96:176:10
811.96:176:09
911.96:166:08
1011.96:166:08
1111.96:166:07
1211.86:166:07
1311.86:166:06
1411.86:166:06
1511.86:166:05
1611.86:166:05
1711.86:166:04
1811.86:166:04
1911.86:166:04
2011.86:166:03
2111.86:166:03
2211.86:166:02
2311.86:166:02
2411.86:166:01
2511.76:166:01
2611.76:166:00
2711.76:166:00
2811.76:166:00
2911.76:165:59
3011.76:165:59

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.4 kWh/m².

For context, solar energy here swings from a low near 4.84 kWh/m² to a high of 6.73 kWh/m² in October across the year — April's 5.4 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.5Bright
265.5Bright
275.5Bright
285.4Bright
295.4Bright
305.4Bright
Planning a trip in April

Hazard calendar for Sumbawa Besar

In seasonPeak

In April, Sumbawa Besar sits inside its cyclone season. The full year is below, with each hazard's peak months called out.

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

Sumbawa Besar's monsoon runs December–March, when most of the year's rain falls.

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

Is April a good time to visit Sumbawa Besar?

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

4.2
Sightseeing
7th-best month of the year
5.7
Beach & pool
8th-best month of the year

April is a reasonable time to visit Sumbawa Besar for sightseeing.

What to pack for Sumbawa Besar in April

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

In April, Sumbawa Besar sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Sumbawa Besar in April

The nearest coast averages about 30°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 km away) is warmest in November at about 30°C and coldest in August 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
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr30Tropical
May29Tropical
Jun29Tropical
Jul28Warm
Aug28Warm
Sep28Warm
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in Sumbawa Besar in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April 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 Sumbawa Besar peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 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 15Jul 10UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul9Very high
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec13Extreme

Air quality in Sumbawa Besar in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in Sumbawa Besar is worst in October — around 30 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (March, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateOct 1529 µg/m³Mar 1610 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb10Good
Mar10Good
Apr10Good
May12Good
Jun12Good
Jul12Moderate
Aug15Moderate
Sep23Moderate
Oct30Moderate
Nov21Moderate
Dec13Moderate
Location & terrain

Where is Sumbawa Besar?

Sumbawa Besar sits at 8.5°S, 117.4°E, 14 m above sea level, in Indonesia. The nearest listed city is Taliwang, 68 km away.

Topography around Sumbawa Besar

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

Within 3 km, the terrain around Sumbawa Besar has only modest variations in elevation — a maximum elevation change of 115 m around an average of 32 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 948 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,795 m.

The land around Sumbawa Besar is covered by grassland (33%), trees (24%) and artificial surfaces (23%) within 3 km, trees (31%), water (25%) and grassland (22%) within 16 km, and water (54%) and trees (32%) within 80 km.

3 km
115 m
16 km
948 m
80 km
2,795 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Taliwang 68 km · Selong 99 km · Dompu 115 km · Praya 129 km · Lombok 144 km · Bima 144 km · Gili Trawangan 153 km · Amlapura 198 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 Sumbawa Besar (-8.4932°, 117.4202°, elevation 14 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).