Pekanbaru weather in December

In December, Pekanbaru sees average daytime highs of 31°C and overnight lows near 24°C, with 263 mm of rain across 26.8 wet days and about 12 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 0% of the time in December, and the air most often feels miserable.

Daylight stretches from about 12 hours at the start of December to 12 hours by month's end. Set against the rest of the year, December is Pekanbaru's 12th-clearest and 2nd-windiest month. For the whole year in context, see Pekanbaru's year-round climate.

Daytime high
31°
11th warmest
Overnight low
24°
5th coldest
Rainfall
263 mm
26.8 wet days
Daylight
12 hours
6:11 AM – 6:10 PM
Cloud cover
93%
12th clearest
Wind
5 km/h
2nd windiest
Solar energy
3.97 kWh/m²
Travel score
2.7
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 December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical December day in Pekanbaru reaches about 31°C in the afternoon and slips back to 24°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113124
123124
133124
143124
153124
163124
173124
183124
193124
203124
213124
223124
233124
243124
253124
263124
273124
283123
293123
303123
313123

How December really feels in Pekanbaru

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

Pekanbaru weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 2nd-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 December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 3% of December, with mostly cloudy or overcast conditions the remaining 97%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1397
2397
3397
4397
5397
6397
7397
8397
9397
10397
11397
12298
13298
14298
15298
16298
17298
18298
19298
20298
21298
22397
23397
24397
25397
26397
27496
28496
29496
30595
31595

Chance of precipitation in December

Any precipitation

Pekanbaru gets around 263 mm of rain over 26.8 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 87% and peaks near 90% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
190
290
389
489
589
688
788
887
987
1087
1187
1287
1387
1487
1587
1687
1787
1887
1987
2087
2187
2287
2387
2487
2586
2685
2785
2884
2983
3083
3182

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the miserable band about 62% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
12773
22773
32773
42872
52872
62971
72971
83070
93169
103169
113268
123367
133466
143565
153664
163763
173862
183961
194159
204258
214357
224456
234654
244753
254852
264951
275050
285050
295149
305248
315347

Wind in December

Winds average 5 km/h in December.

Across December, 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 December

DaylightNight

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

Days grow by about 0 minutes over December. Sunrise moves from 6:05 AM to 6:18 AM, and sunset from 6:03 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:056:03
212.06:056:04
312.06:066:04
412.06:066:04
512.06:066:05
612.06:076:05
712.06:076:06
812.06:086:06
912.06:086:06
1012.06:096:07
1112.06:096:07
1212.06:096:08
1312.06:106:08
1412.06:106:09
1512.06:116:09
1612.06:116:10
1712.06:126:10
1812.06:126:10
1912.06:136:11
2012.06:136:11
2112.06:146:12
2212.06:146:12
2312.06:156:13
2412.06:156:13
2512.06:166:14
2612.06:166:14
2712.06:166:15
2812.06:176:15
2912.06:176:16
3012.06:186:16
3112.06:186:17

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.97 kWh/m² — the year's lowest.

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 — December's 3.97 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.0Bright
24.0Bright
34.0Bright
44.0Bright
54.0Bright
64.0Bright
74.0Bright
84.0Bright
94.0Moderate
104.0Moderate
114.0Moderate
124.0Moderate
134.0Moderate
144.0Moderate
154.0Moderate
163.9Moderate
173.9Moderate
183.9Moderate
193.9Moderate
203.9Moderate
213.9Moderate
223.9Moderate
233.9Moderate
244.0Moderate
254.0Moderate
264.0Moderate
274.0Moderate
284.0Bright
294.0Bright
304.0Bright
314.1Bright
Planning a trip in December

Is December a good time to visit Pekanbaru?

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

2.7
Sightseeing
6th-best month of the year
3.9
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Pekanbaru.

What to pack for Pekanbaru in December

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

In December, Pekanbaru sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

UV index in Pekanbaru in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December 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 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 December

GoodModeratePoorUnhealthyVery unhealthy

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