Sumber weather in July

In July, Sumber sees average daytime highs of 29°C and overnight lows near 24°C, with 31 mm of rain across 6 wet days and about 11.6 hours of daylight. It is the 7th-warmest and 10th-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 40% of the time in July, and the air most often feels muggy.

Daylight stretches from about 11 h 36 min at the start of July to 11 h 42 min by month's end. Set against the rest of the year, July is Sumber's 2nd-clearest and 3rd-windiest month. For the whole year in context, see Sumber's year-round climate.

Daytime high
29°
7th warmest
Overnight low
24°
2nd coldest
Rainfall
31 mm
6 wet days
Daylight
11 h 36 min
6:02 AM – 5:41 PM
Cloud cover
51%
2nd clearest
Wind
11 km/h
3rd windiest
Solar energy
5.17 kWh/m²
Travel score
6.1
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

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

A typical July day in Sumber 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, July runs on par with June and on par with August.

20°23°25°28°30°151015202531
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
272923
282923
292923
302923
312923

How July really feels in Sumber

Once humidity and wind are folded in, July 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

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

Sumber weather by month

How July compares with the rest of the year at a glance. July is the 7th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°33729.612.33.1
Feb28° / 24°31627.312.23.0
Mar29° / 24°31129.5123.0
Apr29° / 25°20925.611.93.4
May29° / 25°9617.211.74.5
Jun29° / 24°5610.711.65.4
Jul29° / 24°31611.66.1
Aug29° / 23°133.111.86.4
Sep30° / 24°284.9125.7
Oct30° / 24°8612.512.24.7
Nov29° / 25°22823.112.33.5
Dec29° / 24°34328.912.43.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 22% of July, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
26040
35941
45941
55941
65941
75941
85842
95941
105941
115941
125941
136040
146040
156040
166040
176040
186139
196139
206238
216337
226337
236436
246535
256535
266535
276733
286733
296733
306832
316832

Chance of precipitation in July

Any precipitation

Sumber gets around 31 mm of rain over 6 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 19% and peaks near 23% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
123
222
322
422
522
622
722
822
922
1022
1122
1222
1322
1422
1521
1621
1721
1820
1920
2019
2119
2218
2317
2416
2515
2615
2714
2813
2913
3012
3112

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 94% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
144254
244353
354352
454451
554451
654550
754550
854550
954550
1054549
1154549
1254649
1354649
1454748
1554748
1654747
1754847
1864946
1964945
2065044
2165143
2275241
2375439
2475538
2585636
2685834
2795833
2896031
29106030
30106228
31116227

Wind in July

Winds average 11 km/h in July.

Across July, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 11 h 36 min at the start of July to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over July. Sunrise moves from 6:01 AM to 6:01 AM, and sunset from 5:38 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:015:38
211.66:015:38
311.66:015:38
411.66:015:38
511.66:025:39
611.66:025:39
711.66:025:39
811.66:025:39
911.66:025:40
1011.66:025:40
1111.66:025:40
1211.66:025:40
1311.66:025:40
1411.66:025:41
1511.66:025:41
1611.66:025:41
1711.66:025:41
1811.66:025:41
1911.76:025:41
2011.76:025:42
2111.76:025:42
2211.76:025:42
2311.76:025:42
2411.76:025:42
2511.76:025:42
2611.76:025:43
2711.76:025:43
2811.76:025:43
2911.76:025:43
3011.76:015:43
3111.76:015:43

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.17 kWh/m².

For context, solar energy here swings from a low near 4.62 kWh/m² to a high of 6.17 kWh/m² in September across the year — July's 5.17 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.5Bright
315.5Bright
Planning a trip in July

Hazard calendar for Sumber

In seasonPeak

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

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

Sumber'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 July a good time to visit Sumber?

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

6.1
Sightseeing
2nd-best month of the year
7.8
Beach & pool
2nd-best month of the year

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

What to pack for Sumber in July

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

In July, Sumber sees daytime highs around 29°C and nights near 24°C. Pack light clothes. Worth having: sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Sumber in July

The nearest coast averages about 29°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 22 km away) is warmest in May 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
Dec29Tropical

UV index in Sumber in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sumber peaks around March 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 14 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 highExtremeMar 12UV 14Jun 14UV 8
UV index (midday)Level
Jan10Extreme
Feb13Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul9Very high
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov8Very high
Dec12Extreme

Air quality in Sumber in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Sumber is worst in May — around 54 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorMay 1654 µg/m³Aug 2244 µg/m³
PM2.5 (µg/m³)Level
Jan47Poor
Feb46Poor
Mar52Poor
Apr51Poor
May54Poor
Jun51Poor
Jul46Poor
Aug44Poor
Sep44Poor
Oct45Poor
Nov44Poor
Dec46Poor
Location & terrain

Where is Sumber?

Sumber sits at 6.8°S, 108.5°E, 72 m above sea level, in Indonesia. The nearest listed city is Weru, 6.0 km away.

Topography around Sumber

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

Within 3 km, the terrain around Sumber has significant variations in elevation — a maximum elevation change of 266 m around an average of 88 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,688 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,025 m.

The land around Sumber is covered by trees (49%) and artificial surfaces (29%) within 3 km, trees (41%) and cropland (27%) within 16 km, and trees (39%), water (29%) and cropland (24%) within 80 km.

3 km
266 m
16 km
2,688 m
80 km
3,025 m
treesgrasslandcroplandartificial surfaceswaterwetland
July weather nearby: Weru 6.0 km · Plumbon 6.0 km · Klangenan 7.0 km · Palimanan 9.0 km · Cirebon 10 km · Arjawinangun 15 km · Astanajapura 17 km · Karangsembung 20 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 Sumber (-6.7603°, 108.4831°, elevation 72 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).