Berastagi weather in September

In September, Berastagi sees average daytime highs of 27°C and overnight lows near 18°C, with 288 mm of rain across 28.4 wet days and about 12 hours of daylight. It is the 7th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 0% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Berastagi's 9th-clearest and 7th-windiest month. For the whole year in context, see Berastagi's year-round climate.

Daytime high
27°
7th warmest
Overnight low
18°
5th coldest
Rainfall
288 mm
28.4 wet days
Daylight
12 hours
6:20 AM – 6:21 PM
Cloud cover
91%
9th clearest
Wind
4 km/h
7th windiest
Solar energy
4.86 kWh/m²
Travel score
3.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Berastagi reaches about 27°C in the afternoon and slips back to 18°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 28°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12718
22718
32718
42718
52718
62718
72718
82718
92718
102718
112718
122718
132718
142718
152718
162718
172718
182718
192718
202718
212718
222718
232718
242718
252718
262718
272718
282718
292618
302618

Berastagi weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 18°23828.411.83.7
Feb26° / 18°19625.111.93.8
Mar27° / 18°22628.5123.6
Apr27° / 19°26129.212.13.3
May28° / 19°23827.612.13.6
Jun28° / 19°18224.512.24.0
Jul27° / 18°18224.512.24.1
Aug27° / 18°22526.512.13.8
Sep27° / 18°28828.4123.5
Oct26° / 18°33429.611.93.4
Nov26° / 19°34629.611.93.3
Dec26° / 19°34030.111.83.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 2% of September, with mostly cloudy or overcast conditions the remaining 98%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1397
2397
3397
4397
5298
6298
7298
8298
9298
10298
11298
12298
13298
14298
15298
16298
17298
18298
19298
20298
21298
22199
23199
24199
25199
26199
27199
28199
29199
30199

Chance of precipitation in September

Any precipitation

Berastagi gets around 288 mm of rain over 28.4 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 94% and peaks near 96% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
193
293
393
493
594
694
794
894
994
1094
1194
1294
1394
1494
1594
1694
1794
1894
1994
2094
2194
2295
2395
2495
2595
2695
2796
2896
2996
3096

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 89% of days. Sticky, muggy-or-worse air turns up on roughly 89% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)
11486
21486
31486
41486
51387
61387
71387
81387
91288
101288
111288
121288
131288
141288
151288
161288
171189
181189
191189
201189
211090
221090
231090
24991
25991
26991
27892
28892
29892
30892

Wind in September

Winds average 4 km/h in September.

Across September, 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.

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
294calm
304calm

Sunrise & sunset in September

DaylightNight

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

Days shrink by about 6 minutes over September. Sunrise moves from 6:24 AM to 6:16 AM, and sunset from 6:28 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:246:28
212.16:246:27
312.16:236:27
412.16:236:26
512.06:236:26
612.06:236:25
712.06:226:25
812.06:226:24
912.06:226:24
1012.06:216:24
1112.06:216:23
1212.06:216:23
1312.06:216:22
1412.06:206:22
1512.06:206:21
1612.06:206:21
1712.06:196:20
1812.06:196:20
1912.06:196:19
2012.06:196:19
2112.06:186:19
2212.06:186:18
2312.06:186:18
2412.06:186:17
2512.06:176:17
2612.06:176:16
2712.06:176:16
2812.06:176:15
2912.06:166:15
3012.06:166:15

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.86 kWh/m².

For context, solar energy here swings from a low near 3.83 kWh/m² to a high of 5.15 kWh/m² in March across the year — September's 4.86 kWh/m² falls in the middle.

024151015202530
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
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in September

Is September a good time to visit Berastagi?

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

3.5
Sightseeing
8th-best month of the year
3.5
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Berastagi.

What to pack for Berastagi in September

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

In September, Berastagi sees daytime highs around 27°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 28 days see rain.

rain gearlight clothessun protection

UV index in Berastagi in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Berastagi peaks around February 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 22UV 15Jun 20UV 11
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep14Extreme
Oct13Extreme
Nov11Extreme
Dec12Extreme

Air quality in Berastagi in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Berastagi 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 Berastagi?

Berastagi sits at 3.2°N, 98.5°E, 1,402 m above sea level, in Indonesia. The nearest listed city is Kabanjahe, 11 km away.

Topography around Berastagi

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

Within 3 km, the terrain around Berastagi has significant variations in elevation — a maximum elevation change of 496 m around an average of 1,430 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,068 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,477 m.

The land around Berastagi is covered by trees (44%) and cropland (23%) within 3 km, trees (72%) within 16 km, and trees (78%) within 80 km.

3 km
496 m
16 km
2,068 m
80 km
2,477 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Kabanjahe 11 km · Tongging 33 km · Paropo 37 km · Deli Tua 40 km · Sunggal 44 km · Binjai 45 km · Medan 47 km · Sidikalang 54 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 Berastagi (3.1947°, 98.5089°, elevation 1,402 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. 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).