Subulussalam weather in July

In July, Subulussalam sees average daytime highs of 30°C and overnight lows near 20°C, with 160 mm of rain across 17.7 wet days and about 12.1 hours of daylight. It is the 6th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 5% of the time in July, and the air most often feels oppressive.

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

Daytime high
30°
6th warmest
Overnight low
20°
4th coldest
Rainfall
160 mm
17.7 wet days
Daylight
12 h 06 min
6:30 AM – 6:38 PM
Cloud cover
83%
2nd clearest
Wind
4 km/h
1st windiest
Solar energy
4.93 kWh/m²
Travel score
4.0
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical July day in Subulussalam reaches about 30°C in the afternoon and slips back to 20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, July runs on par with June and on par with August.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13021
23021
33021
43021
53021
63021
73021
83021
93020
103020
113020
123020
133020
143020
153020
163020
173020
183020
193020
203020
213020
223020
233020
243020
252920
262920
272920
282920
292920
302920
312920

How July really feels in Subulussalam

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.

Subulussalam weather by month

How July compares with the rest of the year at a glance. July is the 6th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°32726.311.93.1
Feb30° / 20°28923.911.92.9
Mar30° / 21°33928.2122.8
Apr30° / 21°36827.312.12.8
May30° / 21°26421.412.13.4
Jun30° / 21°15016.712.23.9
Jul30° / 20°16017.712.14.0
Aug29° / 20°23820.712.13.8
Sep29° / 21°29522.5123.6
Oct29° / 21°4192611.93.4
Nov28° / 21°51028.211.93.1
Dec29° / 21°39527.511.83.1

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 7% of July, with mostly cloudy or overcast conditions the remaining 88%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11684
21684
31486
41486
51387
61387
71288
81387
91387
101288
111288
121288
131288
141189
151189
161189
171189
181189
191189
201189
211189
221288
231288
241288
251387
261387
271288
281189
291288
301288
311288

Chance of precipitation in July

Any precipitation

Subulussalam gets around 160 mm of rain over 17.7 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 57% and peaks near 58% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
155
256
356
456
556
656
756
856
956
1056
1156
1256
1357
1457
1557
1657
1758
1858
1958
2058
2158
2258
2358
2458
2558
2658
2757
2857
2957
3057
3157

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 62% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
103070
203169
303169
403268
503367
603367
703466
803565
913564
1013663
1113663
1213762
1313762
1413861
1513861
1613861
1703961
1803961
1904060
2004060
2104060
2204060
2304159
2404159
2504159
2604159
2704159
2804159
2904159
3004060
3104060

Wind in July

Winds average 4 km/h in July, the windiest month of the year.

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

0246810151015202531
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
294calm
304calm
314calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 12 h 12 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 shrink by about 6 minutes over July. Sunrise moves from 6:27 AM to 6:31 AM, and sunset from 6:36 PM to 6:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:276:36
212.26:276:37
312.26:286:37
412.26:286:37
512.26:286:37
612.16:286:37
712.16:286:37
812.16:296:37
912.16:296:38
1012.16:296:38
1112.16:296:38
1212.16:296:38
1312.16:296:38
1412.16:306:38
1512.16:306:38
1612.16:306:38
1712.16:306:38
1812.16:306:38
1912.16:306:38
2012.16:306:38
2112.16:306:39
2212.16:316:39
2312.16:316:39
2412.16:316:39
2512.16:316:38
2612.16:316:38
2712.16:316:38
2812.16:316:38
2912.16:316:38
3012.16:316:38
3112.16:316:38

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.93 kWh/m².

For context, solar energy here swings from a low near 3.85 kWh/m² to a high of 5.26 kWh/m² in February across the year — July's 4.93 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in July

Hazard calendar for Subulussalam

In seasonPeak

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

Subulussalam sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

Cyclone
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit Subulussalam?

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

4.0
Sightseeing
1st-best month of the year
5.4
Beach & pool
1st-best month of the year

July is a reasonable time to visit Subulussalam for sightseeing.

What to pack for Subulussalam in July

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

In July, Subulussalam sees daytime highs around 30°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

Sea temperature near Subulussalam 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 29 km away) is warmest in May 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 Subulussalam 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 Subulussalam peaks around March 15 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 15UV 14Jul 13UV 11
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep14Extreme
Oct13Extreme
Nov11Extreme
Dec12Extreme

Air quality in Subulussalam 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 Subulussalam is worst in March — around 25 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1425 µg/m³Dec 1218 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb24Moderate
Mar25Moderate
Apr23Moderate
May21Moderate
Jun21Moderate
Jul20Moderate
Aug20Moderate
Sep24Moderate
Oct23Moderate
Nov19Moderate
Dec18Moderate
Location & terrain

Where is Subulussalam?

Subulussalam sits at 2.7°N, 97.9°E, 29 m above sea level, in Indonesia. The nearest listed city is Singkil, 43 km away.

Topography around Subulussalam

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

Within 3 km, the terrain around Subulussalam has only modest variations in elevation — a maximum elevation change of 40 m around an average of 21 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 205 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,429 m.

The land around Subulussalam is covered by trees (90%) within 3 km, trees (92%) within 16 km, and trees (63%) and water (33%) within 80 km.

3 km
40 m
16 km
205 m
80 km
2,429 m
treesshrubsgrasslandcroplandartificial surfaceswater
July weather nearby: Singkil 43 km · Sidikalang 49 km · Paropo 74 km · Tongging 76 km · Kabanjahe 83 km · Pangururan 91 km · Berastagi 91 km · Barus 92 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 Subulussalam (2.662°, 97.8827°, elevation 29 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).