Semarang weather in July

In July, Semarang sees average daytime highs of 32°C and overnight lows near 23°C, with 38 mm of rain across 6.5 wet days and about 11.6 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 33% 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 Semarang's 2nd-clearest and 5th-windiest month. For the whole year in context, see Semarang's year-round climate.

Daytime high
32°
4th warmest
Overnight low
23°
2nd coldest
Rainfall
38 mm
6.5 wet days
Daylight
11 h 36 min
5:55 AM – 5:33 PM
Cloud cover
55%
2nd clearest
Wind
6 km/h
5th windiest
Solar energy
5.26 kWh/m²
Travel score
4.3
out of 10

Semarang is city in Central Java Province, Indonesia.

Density
4,534/km²
people per km²
Founded
1547

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical July day in Semarang reaches about 32°C in the afternoon and slips back to 23°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 33°C. Set against its neighbours, July runs on par with June and on par with August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13223
23223
33223
43223
53223
63223
73223
83223
93223
103223
113223
123223
133223
143223
153223
163223
173223
183223
193223
203223
213223
223223
233223
243223
253223
263223
273223
283223
293223
303223
313223

How July really feels in Semarang

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

Semarang weather by month

How July compares with the rest of the year at a glance. July is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°39129.912.42.7
Feb30° / 24°35427.212.22.7
Mar30° / 24°34529.3122.6
Apr31° / 24°2372611.92.7
May32° / 24°10216.411.73.5
Jun32° / 24°6010.511.64.0
Jul32° / 23°386.511.64.3
Aug33° / 23°23411.84.2
Sep33° / 24°446.1123.7
Oct33° / 24°13915.312.23.0
Nov32° / 24°28225.612.32.5
Dec30° / 24°41629.212.42.6

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 26% of July, with mostly cloudy or overcast conditions the remaining 41%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
25941
35941
45743
55743
65743
75644
85644
95644
105545
115545
125545
135644
145644
155644
165644
175743
185842
195842
205842
216040
226040
236139
246238
256238
266238
276337
286337
296337
306337
316436

Chance of precipitation in July

Any precipitation

Semarang gets around 38 mm of rain over 6.5 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 21% and peaks near 24% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
123
222
322
423
523
623
723
824
924
1024
1124
1224
1324
1424
1524
1624
1723
1823
1922
2022
2121
2220
2319
2418
2517
2616
2715
2814
2914
3013
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 89% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10743455
20743454
30744444
40844444
50845434
60845434
70845433
80945433
90945423
100945423
110946423
1201046413
1301046413
1401047413
1501047403
1601048403
1701048392
1801049382
1901150382
2001150372
2101152352
2201153342
2301154332
2401254322
2501257301
2601357291
2701457281
2801458271
2901558261
3011657251
3111658241

Wind in July

Winds average 6 km/h in July.

Across July, daily wind ranges from about 6 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
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
297calm
307calm
317calm

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 5:54 AM to 5:54 AM, and sunset from 5:30 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:545:30
211.65:545:30
311.65:545:30
411.65:545:30
511.65:545:31
611.65:545:31
711.65:545:31
811.65:555:31
911.65:555:31
1011.65:555:32
1111.65:555:32
1211.65:555:32
1311.65:555:32
1411.65:555:32
1511.65:555:33
1611.65:555:33
1711.65:555:33
1811.65:555:33
1911.65:555:33
2011.65:555:34
2111.65:555:34
2211.65:555:34
2311.75:555:34
2411.75:555:34
2511.75:555:34
2611.75:555:34
2711.75:545:35
2811.75:545:35
2911.75:545:35
3011.75:545:35
3111.75:545:35

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.26 kWh/m².

For context, solar energy here swings from a low near 4.66 kWh/m² to a high of 6.31 kWh/m² in September across the year — July's 5.26 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
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
155.2Bright
165.2Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.6Bright
Planning a trip in July

Hazard calendar for Semarang

In seasonPeak

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

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

Semarang'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 Semarang?

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

4.3
Sightseeing
1st-best month of the year
7.0
Beach & pool
2nd-best month of the year

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

What to pack for Semarang in July

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

In July, Semarang sees daytime highs around 32°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Semarang 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 14 km away) is warmest in May at about 30°C and coldest in February near 29°C.

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

28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index in Semarang 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 Semarang peaks around March 15 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 14 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highExtremeMar 15UV 14Nov 14UV 7
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar14Extreme
Apr11Extreme
May8Very high
Jun8Very high
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct10Very high
Nov7High
Dec12Extreme

Air quality in Semarang 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 Semarang is worst in May — around 45 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorMay 1445 µg/m³Feb 1131 µg/m³
PM2.5 (µg/m³)Level
Jan33Moderate
Feb30Moderate
Mar38Poor
Apr43Poor
May45Poor
Jun41Poor
Jul36Poor
Aug36Poor
Sep38Poor
Oct39Poor
Nov38Poor
Dec34Moderate
Location & terrain

Where is Semarang?

Semarang sits at 7.0°S, 110.4°E, 18 m above sea level, in Indonesia. The nearest listed city is Mranggen, 11 km away.

Topography around Semarang

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

Within 3 km, the terrain around Semarang has only modest variations in elevation — a maximum elevation change of 133 m around an average of 26 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 616 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,293 m.

The land around Semarang is covered by artificial surfaces (84%) within 3 km, water (31%), trees (30%) and artificial surfaces (25%) within 16 km, and trees (48%) and water (25%) within 80 km.

3 km
133 m
16 km
616 m
80 km
3,293 m
treesgrasslandcroplandartificial surfaceswaterwetland
July weather nearby: Mranggen 11 km · Ungaran 16 km · Demak 27 km · Ambarawa 30 km · Salatiga 39 km · Welahan 39 km · Weleri 39 km · Pecangaan 46 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 Semarang (-6.9931°, 110.4208°, elevation 18 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).