Sibolga weather in April

In April, Sibolga sees average daytime highs of 29°C and overnight lows near 24°C, with 357 mm of rain across 26.7 wet days and about 12 hours of daylight. It is the 5th-warmest and 5th-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 1% of the time in April, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of April to 12 h 06 min by month's end. Set against the rest of the year, April is Sibolga's 9th-clearest and 10th-windiest month. For the whole year in context, see Sibolga's year-round climate.

Daytime high
29°
5th warmest
Overnight low
24°
11th coldest
Rainfall
357 mm
26.7 wet days
Daylight
12 hours
6:24 AM – 6:26 PM
Cloud cover
90%
9th clearest
Wind
4 km/h
10th windiest
Solar energy
5 kWh/m²
Travel score
3.2
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 April

Average highAverage lowShaded bands: 10–90% of days

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

A typical April day in Sibolga 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 27°C and 30°C. Set against its neighbours, April runs on par with March and on par with May.

20°23°25°28°30°151015202530
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
272924
282924
292924
302924

How April really feels in Sibolga

Once humidity and wind are folded in, April averages 19 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
19
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Sibolga weather by month

How April compares with the rest of the year at a glance. April is the 5th-warmest and 5th-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 April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 4% of April, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1595
2595
3496
4496
5496
6496
7496
8595
9595
10595
11595
12595
13595
14595
15595
16595
17595
18595
19595
20595
21595
22595
23595
24595
25595
26595
27595
28595
29595
30694

Chance of precipitation in April

Any precipitation

Sibolga gets around 357 mm of rain over 26.7 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 89% and peaks near 91% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
190
291
391
491
591
691
791
891
991
1091
1191
1291
1391
1491
1591
1690
1790
1889
1989
2088
2188
2287
2386
2486
2585
2685
2784
2883
2983
3082

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the oppressive band about 85% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
18713
28812
38812
48812
58812
68812
78812
88713
98713
108713
118713
128614
138614
148614
158614
168515
178515
188515
198515
208515
218416
228416
238416
248416
258317
268317
278218
288218
298119
308119

Wind in April

Winds average 4 km/h in April.

Across April, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
295calm
305calm

Sunrise & sunset in April

DaylightNight

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

Days grow by about 6 minutes over April. Sunrise moves from 6:29 AM to 6:20 AM, and sunset from 6:30 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:296:30
212.06:296:30
312.06:286:29
412.06:286:29
512.06:286:29
612.06:276:29
712.06:276:28
812.06:276:28
912.06:266:28
1012.06:266:28
1112.06:266:27
1212.06:256:27
1312.06:256:27
1412.06:256:27
1512.06:246:26
1612.06:246:26
1712.06:246:26
1812.06:236:26
1912.06:236:26
2012.06:236:25
2112.06:236:25
2212.06:226:25
2312.06:226:25
2412.16:226:25
2512.16:226:25
2612.16:216:24
2712.16:216:24
2812.16:216:24
2912.16:216:24
3012.16:206:24

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5 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 — April's 5 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
Planning a trip in April

Is April a good time to visit Sibolga?

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

3.2
Sightseeing
11th-best month of the year
4.0
Beach & pool
10th-best month of the year

April is a weaker month for outdoor sightseeing in Sibolga.

What to pack for Sibolga in April

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

In April, Sibolga sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

Sea temperature near Sibolga in April

The nearest coast averages about 30°C in April — 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 April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 13 (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 April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April 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
April 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).