Tanjung Balai weather in July

In July, Tanjung Balai sees average daytime highs of 29°C and overnight lows near 27°C, with 186 mm of rain across 22.5 wet days and about 12.1 hours of daylight. It is the 3rd-warmest and 7th-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 15% of the time in July, and the air most often feels miserable.

Daylight stretches from about 12 h 06 min at the start of July to 12 hours by month's end. Set against the rest of the year, July is Tanjung Balai's 2nd-clearest and 4th-windiest month. For the whole year in context, see Tanjung Balai's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
27°
10th coldest
Rainfall
186 mm
22.5 wet days
Daylight
12 h 06 min
6:10 AM – 6:14 PM
Cloud cover
71%
2nd clearest
Wind
17 km/h
4th windiest
Solar energy
5.01 kWh/m²
Travel score
4.0
out of 10

Tanjung Balai is capital of Karimun Regency, Riau Islands, Indonesia.

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 29°C through the month.

A typical July day in Tanjung Balai reaches about 29°C in the afternoon and slips back to 27°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 29°C. Set against its neighbours, July runs on par with June and on par with August.

24°26°28°30°32°151015202531
Avg high (°C)Avg low (°C)
12927
22927
32927
42927
52927
62927
72927
82927
92927
102927
112927
122927
132827
142827
152827
162827
172827
182827
192827
202827
212827
222927
232927
242927
252927
262927
272927
282927
292927
302927
312927

How July really feels in Tanjung Balai

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.

Tanjung Balai weather by month

How July compares with the rest of the year at a glance. July is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 26°17418.611.94.9
Feb28° / 26°9813.3125.5
Mar28° / 26°16721.3124.4
Apr29° / 26°22026.4123.4
May29° / 27°23226.7123.4
Jun29° / 27°19122.512.13.8
Jul29° / 27°18622.512.14.0
Aug28° / 26°17422.8124.0
Sep28° / 26°16721.5124.1
Oct28° / 26°22024.6123.7
Nov28° / 26°32928.1123.5
Dec27° / 26°31925.811.93.9

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 17% of July, with mostly cloudy or overcast conditions the remaining 68%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23466
33367
43268
53169
63070
73070
83070
92971
102971
112971
122971
132971
143070
153070
163070
173169
183169
193169
203268
213367
223367
233466
243466
253466
263565
273565
283565
293466
303466
313466

Chance of precipitation in July

Any precipitation

Tanjung Balai gets around 186 mm of rain over 22.5 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 72% and peaks near 76% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
173
274
374
474
575
675
776
876
976
1076
1176
1276
1376
1476
1576
1675
1775
1874
1973
2072
2171
2271
2370
2469
2568
2667
2766
2866
2965
3065
3165

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the miserable band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
14258
24357
34357
44456
54555
64555
74654
84654
94753
104753
114753
124753
134852
144852
154951
164951
175050
185050
195149
205149
215248
225248
235347
245347
255446
265446
275545
285644
295644
305743
315743

Wind in July

Winds average 17 km/h in July.

Across July, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 12 h 06 min at the start of July to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over July. Sunrise moves from 6:08 AM to 6:11 AM, and sunset from 6:11 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:086:11
212.16:086:12
312.16:086:12
412.16:096:12
512.16:096:12
612.16:096:12
712.16:096:12
812.16:096:13
912.16:096:13
1012.16:106:13
1112.16:106:13
1212.16:106:13
1312.16:106:13
1412.16:106:13
1512.16:106:13
1612.16:106:14
1712.16:106:14
1812.16:116:14
1912.16:116:14
2012.16:116:14
2112.16:116:14
2212.06:116:14
2312.06:116:14
2412.06:116:14
2512.06:116:14
2612.06:116:14
2712.06:116:14
2812.06:116:14
2912.06:116:14
3012.06:116:14
3112.06:116:14

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.01 kWh/m².

For context, solar energy here swings from a low near 4.45 kWh/m² to a high of 5.79 kWh/m² in March across the year — July's 5.01 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in July

Is July a good time to visit Tanjung Balai?

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

4.0
Sightseeing
5th-best month of the year
4.9
Beach & pool
4th-best month of the year

July is a reasonable time to visit Tanjung Balai for sightseeing.

What to pack for Tanjung Balai in July

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

In July, Tanjung Balai sees daytime highs around 29°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

Sea temperature near Tanjung Balai in July

The nearest coast averages about 30°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 15 km away) is warmest in May at about 30°C and coldest in January 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
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Tanjung Balai in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tanjung Balai peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeFeb 18UV 15Jun 22UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun10Very high
Jul10Extreme
Aug13Extreme
Sep12Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Tanjung Balai 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 Tanjung Balai is worst in September — around 45 µg/m³ PM2.5 (poor), about 1.8× the cleanest month (January, 26 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModeratePoorModerateSep 1845 µg/m³Jan 1026 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb29Moderate
Mar39Poor
Apr35Moderate
May29Moderate
Jun26Moderate
Jul31Moderate
Aug37Poor
Sep45Poor
Oct40Poor
Nov31Moderate
Dec26Moderate
Location & terrain

Where is Tanjung Balai?

Tanjung Balai sits at 1.0°N, 103.4°E, 9 m above sea level, in Indonesia. The nearest listed city is Boon Lay, 46 km away.

Topography around Tanjung Balai

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

Within 3 km, the terrain around Tanjung Balai has only modest variations in elevation — a maximum elevation change of 37 m around an average of 6 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 480 m; within 80 km, large variations in elevation — a maximum elevation change of 656 m.

The land around Tanjung Balai is covered by water (47%) and artificial surfaces (25%) within 3 km, water (72%) within 16 km, and water (60%) and trees (28%) within 80 km.

3 km
37 m
16 km
480 m
80 km
656 m
treesshrubsgrasslandartificial surfacesbare terrainwatermangroves
July weather nearby: Boon Lay 46 km · Iskandar Puteri 49 km · Jurong Town 50 km · Jurong East 51 km · Jurong West 51 km · Clementi Housing Estate 52 km · Hong Kah 52 km · Telok Blangah 53 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 Tanjung Balai (1.0001°, 103.4219°, elevation 9 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. 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).