Pekanbaru climate — normals and trends
Pekanbaru (Indonesia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 26.3 °C and it receives 2,202 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is May (26.9 °C on average) and the coldest is January (25.6 °C). Rainfall peaks in November.
Pekanbaru averages 0 frost days, 283 hot days (≥ 30 °C) and 289 rainy days per year.
Pekanbaru has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.2 °C (on 13 April 1949) and the coldest 18.3 °C (on 29 February 1948).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
PekanbaruRiau
- coords
- 0.52°, 101.44°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.3°C
Average daily high
31.1°C
Average daily low
23.1°C
Annual rainfall
2,202mm
Sunshine / day
9.2h
Mean relative humidity
87%
Average peak wind
7.9km/h
Seasonal range
1.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
283 d/yr
Rainy days (≥ 1 mm)
289 d/yr
Annual snowfall
0.0 cm
Average feels-like high
37.5 °C
Average feels-like low
27.8 °C
Average peak gust
23.5 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
17.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.77 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
36.2 °C
13 April 1949
Coldest day
18.3 °C
29 February 1948
Wettest day
164 mm
17 May 2021
Windiest day
18.4 km/h
7 June 1972
Strongest gust
50.8 km/h
4 January 1971
Hottest feels-like
44.2 °C
14 April 2016
Coldest feels-like
19.8 °C
2 February 1949
Sunniest day
12.0 h
19 October 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 29.9 °C | -0.1 °C | 331 mm | +146 mm |
| Feb | 31.2 °C | +0.4 °C | 234 mm | +84 mm |
| Mar | 31.1 °C | -0.1 °C | 409 mm | +212 mm |
| Apr | 31.6 °C | +0.1 °C | 284 mm | +76 mm |
| May | 32.8 °C | +1.1 °C | 89 mm | -83 mm |
| Jun | 33.0 °C | +1.3 °C | 87 mm | -22 mm |
| Jul | 33.7 °C | +2.1 °C | 66 mm | -44 mm |
| Aug | 32.6 °C | +1.1 °C | 200 mm | +49 mm |
| Sep | 31.6 °C | +0.3 °C | 166 mm | -27 mm |
| Oct | 32.6 °C | +1.4 °C | 137 mm | -94 mm |
| Nov | 32.6 °C | +1.9 °C | 276 mm | +16 mm |
| Dec | 30.1 °C | 0.0 °C | 347 mm | +110 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Pekanbaru?
Pekanbaru has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.3 °C and it receives 2,202 mm of precipitation per year.
What is the hottest day ever recorded in Pekanbaru?
The hottest day measured in Pekanbaru between 1940 and 2025 was 13 April 1949, reaching 36.2 °C.
What is the coldest day in Pekanbaru?
The coldest day measured in Pekanbaru between 1940 and 2025 was 29 February 1948, at 18.3 °C.
Does it snow in Pekanbaru?
Almost never: Pekanbaru sees virtually no snow, with about 0 frost days per year.
Has the climate of Pekanbaru warmed?
Yes: Pekanbaru warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Pekanbaru?
The wettest day measured in Pekanbaru between 1940 and 2025 was 17 May 2021, with 164 mm of rain in 24 hours.
What was the windiest day in Pekanbaru?
The windiest day measured in Pekanbaru between 1940 and 2025 was 7 June 1972, with winds reaching 18.4 km/h.
What is the warmest month in Pekanbaru?
The warmest month in Pekanbaru is May (26.9 °C on average); the coldest is January (25.6 °C).
How much does it rain in Pekanbaru?
Pekanbaru receives on average 2,202 mm of precipitation per year, spread over about 289 rainy days.
Is it sunny in Pekanbaru?
Pekanbaru gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
Are there tropical nights in Pekanbaru?
Yes: Pekanbaru has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Pekanbaru?
In Pekanbaru, between 1940 and 2025, the highest apparent temperature reached 44.2 °C on 14 April 2016, and the lowest was 19.8 °C on 2 February 1949.
Compare Pekanbaru with another city
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Nearby cities
The climate around Pekanbaru