Pekanbaru weather in August

In August, Pekanbaru sees average daytime highs of 32°C and overnight lows near 24°C, with 157 mm of rain across 22.1 wet days and about 12 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 4% of the time in August, and the air most often feels miserable.

Daylight stretches from about 12 hours at the start of August to 12 hours by month's end. Set against the rest of the year, August is Pekanbaru's 3rd-clearest and 3rd-windiest month. For the whole year in context, see Pekanbaru's year-round climate.

Daytime high
32°
4th warmest
Overnight low
24°
5th coldest
Rainfall
157 mm
22.1 wet days
Daylight
12 hours
6:18 AM – 6:19 PM
Cloud cover
81%
3rd clearest
Wind
5 km/h
3rd windiest
Solar energy
4.95 kWh/m²
Travel score
2.8
out of 10

Pekanbaru is city in Riau Province, Indonesia.

Density
1,847/km²
people per km²
Founded
1784

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical August day in Pekanbaru reaches about 32°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°C. Set against its neighbours, August runs on par with July and on par with September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13224
23224
33224
43224
53224
63224
73224
83224
93224
103224
113224
123224
133224
143224
153224
163224
173224
183224
193224
203224
213224
223224
233224
243224
253224
263224
273224
283224
293224
303223
313223

How August really feels in Pekanbaru

Once humidity and wind are folded in, August 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 August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Pekanbaru weather by month

How August compares with the rest of the year at a glance. August is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°20924.1122.9
Feb31° / 24°15721.1122.8
Mar32° / 24°21326.1122.4
Apr32° / 24°23327.9122.2
May32° / 24°19124.9122.4
Jun32° / 24°13119.6122.9
Jul32° / 24°12419.1123.1
Aug32° / 24°15722.1122.8
Sep32° / 23°19523.8122.6
Oct32° / 24°24127122.4
Nov31° / 24°29827.9122.4
Dec31° / 24°26326.8122.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 12% of August, with mostly cloudy or overcast conditions the remaining 84%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12179
22080
32080
41981
51981
61981
71882
81882
91783
101783
111783
121783
131684
141585
151585
161585
171585
181585
191585
201486
211486
221486
231486
241486
251486
261486
271486
281486
291486
301486
311486

Chance of precipitation in August

Any precipitation

Pekanbaru gets around 157 mm of rain over 22.1 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 71% and peaks near 78% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
163
263
364
464
564
665
765
866
967
1068
1169
1270
1371
1471
1572
1672
1773
1874
1974
2075
2175
2275
2376
2476
2576
2676
2777
2877
2977
3078
3178

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 63% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
14258
24258
34159
44159
54060
64060
73961
83961
93862
103763
113763
123664
133664
143664
153664
163664
173664
183664
193664
203664
213664
223664
233664
243664
253664
263664
273664
283664
293664
303664
313664

Wind in August

Winds average 5 km/h in August.

Across August, 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 August

DaylightNight

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

Days grow by about 0 minutes over August. Sunrise moves from 6:20 AM to 6:14 AM, and sunset from 6:21 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:206:21
212.06:206:21
312.06:206:21
412.06:196:21
512.06:196:21
612.06:196:21
712.06:196:20
812.06:196:20
912.06:196:20
1012.06:196:20
1112.06:196:20
1212.06:196:20
1312.06:186:19
1412.06:186:19
1512.06:186:19
1612.06:186:19
1712.06:186:19
1812.06:176:18
1912.06:176:18
2012.06:176:18
2112.06:176:18
2212.06:166:17
2312.06:166:17
2412.06:166:17
2512.06:166:16
2612.06:156:16
2712.06:156:16
2812.06:156:16
2912.06:156:15
3012.06:146:15
3112.06:146:15

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.95 kWh/m².

For context, solar energy here swings from a low near 3.97 kWh/m² to a high of 5.03 kWh/m² in September across the year — August's 4.95 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
305.0Bright
315.0Bright
Planning a trip in August

Is August a good time to visit Pekanbaru?

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

2.8
Sightseeing
4th-best month of the year
4.5
Beach & pool
3rd-best month of the year

August is a weaker month for outdoor sightseeing in Pekanbaru.

What to pack for Pekanbaru in August

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

In August, Pekanbaru sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Pekanbaru in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Pekanbaru peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 18UV 15Jun 23UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug12Extreme
Sep13Extreme
Oct14Extreme
Nov10Extreme
Dec11Extreme

Air quality in Pekanbaru in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Pekanbaru is worst in September — around 50 µg/m³ PM2.5 (poor), about 2.2× the cleanest month (December, 23 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateSep 1549 µg/m³Dec 1723 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb32Moderate
Mar34Moderate
Apr30Moderate
May28Moderate
Jun29Moderate
Jul33Moderate
Aug43Poor
Sep50Poor
Oct42Poor
Nov25Moderate
Dec23Moderate
Location & terrain

Where is Pekanbaru?

Pekanbaru sits at 0.5°N, 101.4°E, 19 m above sea level, in Indonesia. The nearest listed city is Balai Pungut, 63 km away.

Topography around Pekanbaru

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

Within 3 km, the terrain around Pekanbaru has only modest variations in elevation — a maximum elevation change of 24 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 80 m; within 80 km, large variations in elevation — a maximum elevation change of 667 m.

The land around Pekanbaru is covered by artificial surfaces (82%) within 3 km, trees (73%) within 16 km, and trees (95%) within 80 km.

3 km
24 m
16 km
80 m
80 km
667 m
treesshrubsgrasslandartificial surfacesbare terrainwater
August weather nearby: Balai Pungut 63 km · Payakumbuh 121 km · Dumai 128 km · Sijunjung 145 km · Bukittinggi 150 km · Padangpanjang 158 km · Solok 170 km · Pariaman 194 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 Pekanbaru (0.5167°, 101.4417°, elevation 19 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).