Cepu weather in August

In August, Cepu sees average daytime highs of 33°C and overnight lows near 22°C, with 13 mm of rain across 2.6 wet days and about 11.8 hours of daylight. It is the 4th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 35% of the time in August, and the air most often feels muggy.

Daylight stretches from about 11 h 42 min at the start of August to 11 h 54 min by month's end. Set against the rest of the year, August is Cepu's 1st-clearest and 1st-windiest month. For the whole year in context, see Cepu's year-round climate.

Daytime high
33°
4th warmest
Overnight low
22°
1st coldest
Rainfall
13 mm
2.6 wet days
Daylight
11 h 48 min
5:45 AM – 5:31 PM
Cloud cover
52%
1st clearest
Wind
7 km/h
1st windiest
Solar energy
5.95 kWh/m²
Travel score
4.2
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical August day in Cepu reaches about 33°C in the afternoon and slips back to 22°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 34°C. Set against its neighbours, August runs on par with July and about 1°C cooler than September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13322
23322
33322
43322
53322
63322
73322
83322
93322
103322
113322
123322
133322
143322
153322
163322
173322
183322
193322
203322
213322
223322
233322
243323
253323
263323
273323
283323
293323
303323
313323

How August really feels in Cepu

Once humidity and wind are folded in, August averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Cepu weather by month

How August compares with the rest of the year at a glance. August is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°32028.712.42.4
Feb31° / 24°31726.912.22.3
Mar32° / 24°31728.6122.3
Apr32° / 24°23324.911.82.6
May32° / 24°10815.711.73.5
Jun32° / 23°609.611.63.9
Jul32° / 23°315.111.64.2
Aug33° / 22°132.611.84.2
Sep34° / 23°304.5123.5
Oct34° / 24°11812.112.22.8
Nov33° / 24°26823.112.32.3
Dec32° / 24°33227.712.42.3

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 27% of August, with mostly cloudy or overcast conditions the remaining 38%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36436
46436
56436
66436
76436
86436
96436
106436
116436
126436
136436
146436
156337
166337
176337
186337
196238
206139
216139
226139
236139
246139
256040
266040
276040
286040
296040
306040
315941

Chance of precipitation in August

Any precipitation

Cepu gets around 13 mm of rain over 2.6 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 9% and peaks near 11% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
19
28
38
48
58
68
78
88
98
108
118
128
138
148
158
168
178
188
198
209
219
229
239
249
259
2610
2710
2810
2911
3011
3111

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 80% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
12258182
22357182
32357182
42357182
52357182
62258191
72258191
82257201
92257201
102257201
112257201
122257201
132257201
142158201
152159191
162159191
172159191
182159191
192061181
202061181
212061181
221962181
231963171
241863181
251764181
261665181
271665181
281565191
291565191
301466190
311466200

Wind in August

Winds average 7 km/h in August, the windiest month of the year.

Across August, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 42 min at the start of August to 11 h 54 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 5:49 AM to 5:38 AM, and sunset from 5:30 PM to 5:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:495:30
211.75:495:30
311.75:495:30
411.75:495:30
511.75:485:31
611.75:485:31
711.75:485:31
811.75:475:31
911.75:475:31
1011.75:475:31
1111.75:475:31
1211.75:465:31
1311.75:465:31
1411.85:465:31
1511.85:455:31
1611.85:455:31
1711.85:445:31
1811.85:445:31
1911.85:445:31
2011.85:435:30
2111.85:435:30
2211.85:425:30
2311.85:425:30
2411.85:415:30
2511.85:415:30
2611.85:415:30
2711.85:405:30
2811.85:405:30
2911.85:395:30
3011.85:395:29
3111.95:385:29

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.95 kWh/m².

For context, solar energy here swings from a low near 4.84 kWh/m² to a high of 6.48 kWh/m² in September across the year — August's 5.95 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
176.0Bright
186.0Bright
196.0Intense
206.0Intense
216.0Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
316.3Intense
Planning a trip in August

Hazard calendar for Cepu

In seasonPeak

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

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

Cepu's rainy season runs November–April, when most of the year's rain falls.

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

Is August a good time to visit Cepu?

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

4.2
Sightseeing
1st-best month of the year
7.3
Beach & pool
1st-best month of the year

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

What to pack for Cepu in August

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

In August, Cepu sees daytime highs around 33°C and nights near 22°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Cepu in August

The nearest coast averages about 28°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 58 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
May30Tropical
Jun29Tropical
Jul29Tropical
Aug28Tropical
Sep29Tropical
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index in Cepu in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cepu peaks around March 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 15 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highMar 17UV 13Jun 15UV 8
UV index (midday)Level
Jan12Extreme
Feb10Extreme
Mar13Extreme
Apr11Extreme
May9Very high
Jun7Very high
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov9Very high
Dec10Very high

Air quality in Cepu 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 Cepu is worst in May — around 64 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorMay 1764 µg/m³Dec 2343 µg/m³
PM2.5 (µg/m³)Level
Jan44Poor
Feb45Poor
Mar53Poor
Apr59Unhealthy
May64Unhealthy
Jun60Unhealthy
Jul54Poor
Aug48Poor
Sep47Poor
Oct49Poor
Nov48Poor
Dec43Poor
Location & terrain

Where is Cepu?

Cepu sits at 7.1°S, 111.6°E, 36 m above sea level, in Indonesia. The nearest listed city is Blora, 27 km away.

Topography around Cepu

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

Within 3 km, the terrain around Cepu has only modest variations in elevation — a maximum elevation change of 65 m around an average of 36 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 267 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,224 m.

The land around Cepu is covered by cropland (33%), trees (31%) and artificial surfaces (24%) within 3 km, trees (46%) and cropland (37%) within 16 km, and trees (42%) and cropland (34%) within 80 km.

3 km
65 m
16 km
267 m
80 km
3,224 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Blora 27 km · Bojonegoro 32 km · Ngawi 33 km · Lasem 53 km · Madiun 54 km · Rembangan 56 km · Tuban 59 km · Nganjuk 61 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 Cepu (-7.1475°, 111.5906°, elevation 36 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).