Sibolga weather in July

In July, Sibolga sees average daytime highs of 28°C and overnight lows near 24°C, with 193 mm of rain across 19.1 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 7% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of July to 12 h 06 min by month's end. Set against the rest of the year, July is Sibolga's 2nd-clearest and 1st-windiest month. For the whole year in context, see Sibolga's year-round climate.

Daytime high
28°
7th warmest
Overnight low
24°
6th coldest
Rainfall
193 mm
19.1 wet days
Daylight
12 h 06 min
6:28 AM – 6:33 PM
Cloud cover
80%
2nd clearest
Wind
5 km/h
1st windiest
Solar energy
5.06 kWh/m²
Travel score
4.6
out of 10

Sibolga is city in North Sumatra Province, Indonesia.

Density
8,565/km²
people per km²
Founded
1700

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 28°C through the month.

A typical July day in Sibolga reaches about 28°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 27°C and 29°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)
12824
22824
32824
42824
52824
62824
72824
82824
92824
102824
112824
122824
132824
142824
152824
162824
172823
182823
192823
202823
212823
222823
232823
242823
252823
262823
272823
282823
292823
302823
312823

How July really feels in Sibolga

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.

Sibolga weather by month

How July compares with the rest of the year at a glance. July is the 7th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°33826.711.93.5
Feb29° / 24°31123.711.93.4
Mar29° / 24°36127.4123.2
Apr29° / 24°35726.7123.2
May29° / 24°26021.612.13.9
Jun29° / 24°15917.312.14.4
Jul28° / 24°19319.112.14.6
Aug28° / 23°28422.812.14.2
Sep28° / 23°29323.2124.1
Oct28° / 23°42826.1123.8
Nov27° / 23°50727.711.93.4
Dec28° / 24°43327.611.93.6

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 10% of July, with mostly cloudy or overcast conditions the remaining 83%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12179
22080
32080
42080
52080
62080
71981
81882
91882
101882
111882
121783
131783
141783
151783
161783
171684
181684
191684
201783
211783
221783
231783
241684
251783
261783
271783
281783
291684
301684
311585

Chance of precipitation in July

Any precipitation

Sibolga gets around 193 mm of rain over 19.1 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 62% and peaks near 63% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
159
260
360
460
560
660
761
861
961
1061
1161
1261
1361
1462
1562
1662
1762
1863
1963
2063
2163
2263
2363
2463
2563
2663
2763
2863
2963
3063
3163

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 97% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
12962
22962
32962
42962
52971
62971
72971
82971
92971
102971
112971
122971
132971
142971
152971
162971
172971
182971
192971
202971
212971
222971
232971
242971
252971
262971
272971
282971
292971
302971
312971

Wind in July

Winds average 5 km/h in July, the windiest month of the year.

Across July, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in July

DaylightNight

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

Days grow by about 0 minutes over July. Sunrise moves from 6:25 AM to 6:29 AM, and sunset from 6:31 PM to 6:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:256:31
212.16:256:31
312.16:266:32
412.16:266:32
512.16:266:32
612.16:266:32
712.16:266:32
812.16:276:32
912.16:276:32
1012.16:276:33
1112.16:276:33
1212.16:276:33
1312.16:276:33
1412.16:276:33
1512.16:286:33
1612.16:286:33
1712.16:286:33
1812.16:286:33
1912.16:286:33
2012.16:286:33
2112.16:286:34
2212.16:286:34
2312.16:286:34
2412.16:286:34
2512.16:296:34
2612.16:296:34
2712.16:296:34
2812.16:296:33
2912.16:296:33
3012.16:296:33
3112.16:296:33

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.06 kWh/m².

For context, solar energy here swings from a low near 4.11 kWh/m² to a high of 5.45 kWh/m² in February across the year — July's 5.06 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in July

Is July a good time to visit Sibolga?

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

4.6
Sightseeing
1st-best month of the year
5.2
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Sibolga for sightseeing.

What to pack for Sibolga in July

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

In July, Sibolga sees daytime highs around 28°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near Sibolga 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 22 km away) is warmest in March at about 30°C and coldest in November 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
Feb30Tropical
Mar30Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Sibolga in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Sibolga peaks around February 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 11 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 18UV 14Aug 11UV 10
UV index (midday)Level
Jan12Extreme
Feb14Extreme
Mar13Extreme
Apr13Extreme
May11Extreme
Jun11Extreme
Jul11Extreme
Aug10Extreme
Sep14Extreme
Oct14Extreme
Nov12Extreme
Dec12Extreme

Air quality in Sibolga 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 Sibolga is worst in October — around 20 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateOct 1220 µg/m³Dec 1112 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb18Moderate
Mar17Moderate
Apr15Moderate
May15Moderate
Jun14Moderate
Jul15Moderate
Aug14Moderate
Sep19Moderate
Oct20Moderate
Nov12Moderate
Dec12Moderate
Location & terrain

Where is Sibolga?

Sibolga sits at 1.7°N, 98.8°E, 6 m above sea level, in Indonesia. The nearest listed city is Tarutung, 37 km away.

Topography around Sibolga

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

Within 3 km, the terrain around Sibolga has significant variations in elevation — a maximum elevation change of 471 m around an average of 77 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,065 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,230 m.

The land around Sibolga is covered by trees (44%) and water (41%) within 3 km, trees (59%) and water (35%) within 16 km, and trees (58%) and water (36%) within 80 km.

3 km
471 m
16 km
1,065 m
80 km
2,230 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
July weather nearby: Tarutung 37 km · Barus 52 km · Padangsidempuan 68 km · Pangururan 97 km · Bandar 113 km · Rantauprapat 124 km · Sidikalang 124 km · Singkil 126 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 Sibolga (1.7402°, 98.7812°, elevation 6 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).