Jember weather in August

In August, Jember sees average daytime highs of 27°C and overnight lows near 18°C, with 25 mm of rain across 6.2 wet days and about 11.7 hours of daylight. It is the 11th-warmest and 12th-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 15% of the time in August, and the air most often feels muggy.

Daylight stretches from about 11 h 36 min at the start of August to 11 h 48 min by month's end. Set against the rest of the year, August is Jember's 4th-clearest and 1st-windiest month. For the whole year in context, see Jember's year-round climate.

Daytime high
27°
11th warmest
Overnight low
18°
1st coldest
Rainfall
25 mm
6.2 wet days
Daylight
11 h 42 min
5:37 AM – 5:21 PM
Cloud cover
64%
4th clearest
Wind
6 km/h
1st windiest
Solar energy
5.32 kWh/m²
Travel score
6.9
out of 10

Jember is former administrative city and capital of Jember Regency.

Founded
1976

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

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

A typical August day in Jember 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 26°C and 28°C. Set against its neighbours, August runs on par with July and on par with September.

15°20°25°30°151015202531
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
242719
252719
262719
272719
282719
292719
302719
312719

How August really feels in Jember

Once humidity and wind are folded in, August averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Jember weather by month

How August compares with the rest of the year at a glance. August is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 22°35929.312.43.1
Feb29° / 22°33427.112.33.0
Mar29° / 22°32227.812.13.2
Apr29° / 22°21424.411.83.6
May29° / 21°10815.511.65.0
Jun28° / 20°6410.711.56.1
Jul27° / 19°387.611.66.8
Aug27° / 18°256.211.76.9
Sep28° / 19°5710.2126.1
Oct29° / 20°1191812.24.6
Nov29° / 21°26825.412.43.5
Dec28° / 22°33828.212.53.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 24% of August, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34159
44159
54159
64159
74060
83961
94060
103961
113961
123862
133862
143862
153763
163862
173862
183862
193862
203862
213862
223961
233961
243961
253862
263862
273862
283862
293862
303862
313862

Chance of precipitation in August

Any precipitation

Jember gets around 25 mm of rain over 6.2 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 20% and peaks near 26% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
119
219
319
419
519
619
719
819
919
1019
1119
1218
1318
1418
1518
1618
1718
1819
1919
2019
2119
2220
2320
2421
2521
2622
2723
2824
2924
3025
3126

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 63% of days. Sticky, muggy-or-worse air turns up on roughly 70% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1131617
2131626
3131626
4131626
5131617
6231607
7231607
8231607
9131617
10131617
11131617
12131617
13131617
14131617
15131617
16131626
17131626
18131626
19131626
20130636
21130636
22129646
23128656
24127657
25126667
26125677
27124687
28123688
29122698
30121708
31120718

Wind in August

Winds average 6 km/h in August, the windiest month of the year.

Across August, 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.

0246810151015202531
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
316calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 36 min at the start of August to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over August. Sunrise moves from 5:42 AM to 5:30 AM, and sunset from 5:20 PM to 5:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:425:20
211.65:425:21
311.65:425:21
411.75:415:21
511.75:415:21
611.75:415:21
711.75:415:21
811.75:405:21
911.75:405:21
1011.75:405:21
1111.75:395:21
1211.75:395:21
1311.75:395:21
1411.75:385:21
1511.75:385:21
1611.75:375:21
1711.75:375:21
1811.75:375:21
1911.75:365:21
2011.85:365:21
2111.85:355:21
2211.85:355:21
2311.85:345:21
2411.85:345:21
2511.85:335:21
2611.85:335:21
2711.85:325:21
2811.85:325:21
2911.85:315:20
3011.85:315:20
3111.85:305:20

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.32 kWh/m².

For context, solar energy here swings from a low near 4.62 kWh/m² to a high of 6.09 kWh/m² in October across the year — August's 5.32 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.6Bright
285.6Bright
295.6Bright
305.7Bright
315.7Bright
Planning a trip in August

Hazard calendar for Jember

In seasonPeak

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

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

Jember'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 August a good time to visit Jember?

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

6.9
Sightseeing
1st-best month of the year
7.0
Beach & pool
1st-best month of the year

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

What to pack for Jember in August

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

In August, Jember sees daytime highs around 27°C and nights near 18°C. Pack light clothes. Worth having: sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Jember in August

The nearest coast averages about 25°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 42 km away) is warmest in March at about 29°C and coldest in August near 25°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug25Warm
Sep25Warm
Oct26Warm
Nov28Warm
Dec29Tropical

UV index in Jember in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Jember peaks around March 21 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 21UV 14Jun 18UV 9
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar14Extreme
Apr13Extreme
May11Extreme
Jun8Very high
Jul10Very high
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov12Extreme
Dec12Extreme

Air quality in Jember in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Jember is worst in July — around 46 µg/m³ PM2.5 (poor), about 1.9× the cleanest month (September, 24 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModeratePoorModerateJul 1644 µg/m³Sep 1825 µg/m³
PM2.5 (µg/m³)Level
Jan33Moderate
Feb31Moderate
Mar37Poor
Apr35Poor
May31Moderate
Jun34Moderate
Jul46Poor
Aug34Moderate
Sep24Moderate
Oct29Moderate
Nov27Moderate
Dec29Moderate
Location & terrain

Where is Jember?

Jember sits at 8.2°S, 113.7°E, 86 m above sea level, in Indonesia. The nearest listed city is Bondowoso, 32 km away.

Topography around Jember

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

Within 3 km, the terrain around Jember has only modest variations in elevation — a maximum elevation change of 118 m around an average of 99 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,460 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,219 m.

The land around Jember is covered by artificial surfaces (54%) and trees (29%) within 3 km, trees (64%) and cropland (25%) within 16 km, and trees (47%) and water (37%) within 80 km.

3 km
118 m
16 km
1,460 m
80 km
3,219 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Bondowoso 32 km · Kencong 39 km · Besuki 49 km · Lumajang 52 km · Genteng 54 km · Balung 54 km · Gambiran Satu 55 km · Kraksaan 57 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 Jember (-8.1721°, 113.6995°, elevation 86 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).