Pekanbaru

Riau

0.507°, 101.448°

Record: 1950–2026
Years: 77

Annual rainfall in Pekanbaru is trending wetter — 109 mm per decade.

Averaged over the first ten years of the record it was 2261.12; over the last ten, 2909.95 (mm, 1950–2025).

Heavy rain days: ↑ 0.2 days / decade
Unusually hot days: ↑ 6.4 days / decade
Average daily high: ↑ 0.1 °C / decade

Ranked by OLS slope per decade, divided by the series' standard deviation, which puts signals measured in different units on one comparable scale. It is a normalisation, not a weighting — no signal is declared more important than another. Needs 30+ years; the current, incomplete year is excluded.

What the record shows

Where the numbers come from

Every square in the grid below is one month. Here is one, day by day.

Jun 2026 in Pekanbaru — the most recent month with a reading for every single day.

bar height = that day’s highest temperature
30° = the same number, in °C
1mm = that day’s rainfall

132°1mm
234°0mm
333°2mm
435°1mm
534°3mm
635°0mm
733°11mm
834°8mm
933°16mm
1033°2mm
1133°0mm
1232°4mm
1332°1mm
1433°9mm
1533°3mm
1632°1mm
1732°8mm
1832°2mm
1932°5mm
2031°5mm
2132°7mm
2231°9mm
2332°5mm
2428°28mm
2531°6mm
2632°1mm
2733°0mm
2832°5mm
2933°38mm
3032°2mm

A “hot day” is any day above 31.7°C. Drag to see the rule change what it counts.

28°C36°C

25 of 30 days in Jun 2026 qualify.

Those 30 days collapse into three numbers. That is the whole of what “a month” means on this site:

Add them up: 178.4 mm; Total rainfall. This is the value the Rainfall fingerprint paints for Jun 2026.
Average them: 32.5°C; Mean daily high — not the hottest day, the typical one.
Count them: 25 days; Days over the threshold. A count, so one very hot day counts the same as any other.

Checked against the stored record: the grid below holds 178.4 mm and 32.5°C for Jun 2026. Those are the same three operations on the same days, so they match what is shown above exactly — verified for all 90 cities, not assumed. Multiply this by 12 months and 77 years and you have the fingerprint.

The signature view

Climate Fingerprint

Total monthly rainfall · 1950–2026

One cell is one month — an average (or a count) over its 28–31 days, not a single reading.

Monthly precipitation for Pekanbaru, 1950 to 2026, in mm
Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2026	135.6 mm	104.2 mm	158.5 mm	345.9 mm	253.2 mm	178.4 mm	49.1 mm	no data	no data	no data	no data	no data
2025	361.7 mm	169.4 mm	419.5 mm	352.1 mm	150.2 mm	88.0 mm	99.1 mm	196.2 mm	210.9 mm	189.4 mm	157.1 mm	436.7 mm
2024	460.1 mm	294.9 mm	260.8 mm	421.7 mm	333.9 mm	254.8 mm	104.4 mm	268.0 mm	222.4 mm	236.1 mm	453.9 mm	284.8 mm
2023	236.8 mm	198.3 mm	225.3 mm	247.0 mm	197.6 mm	176.5 mm	150.3 mm	286.2 mm	153.2 mm	306.6 mm	398.0 mm	460.0 mm
2022	169.4 mm	290.4 mm	302.3 mm	317.9 mm	175.7 mm	236.5 mm	121.4 mm	272.5 mm	257.2 mm	304.5 mm	264.1 mm	344.2 mm
2021	226.7 mm	126.8 mm	357.0 mm	335.8 mm	303.1 mm	142.0 mm	190.1 mm	209.5 mm	208.7 mm	206.3 mm	277.7 mm	254.8 mm
2020	214.9 mm	219.4 mm	333.1 mm	271.9 mm	213.8 mm	198.8 mm	241.5 mm	138.6 mm	335.2 mm	226.9 mm	404.4 mm	139.1 mm
2019	267.2 mm	163.3 mm	167.3 mm	317.0 mm	186.8 mm	230.6 mm	130.4 mm	84.0 mm	182.2 mm	281.6 mm	252.0 mm	399.2 mm
2018	149.4 mm	220.7 mm	254.9 mm	263.7 mm	263.3 mm	121.1 mm	118.2 mm	100.6 mm	178.5 mm	378.8 mm	335.2 mm	310.8 mm
2017	241.6 mm	316.4 mm	413.3 mm	381.0 mm	273.3 mm	129.5 mm	101.6 mm	232.4 mm	197.7 mm	213.8 mm	429.1 mm	290.3 mm
2016	230.9 mm	218.8 mm	156.8 mm	198.5 mm	221.5 mm	95.4 mm	171.7 mm	73.4 mm	140.8 mm	172.6 mm	379.3 mm	168.9 mm
2015	174.3 mm	73.4 mm	238.0 mm	217.6 mm	189.5 mm	144.8 mm	64.0 mm	136.7 mm	140.6 mm	115.1 mm	359.5 mm	228.3 mm
2014	162.5 mm	24.4 mm	143.3 mm	260.4 mm	277.1 mm	118.2 mm	100.1 mm	270.2 mm	219.8 mm	262.1 mm	335.0 mm	364.9 mm
2013	195.1 mm	334.6 mm	194.6 mm	209.6 mm	172.5 mm	81.9 mm	106.5 mm	139.5 mm	211.7 mm	269.6 mm	301.5 mm	205.9 mm
2012	86.3 mm	264.7 mm	157.8 mm	241.0 mm	203.2 mm	83.0 mm	123.4 mm	189.6 mm	188.1 mm	309.8 mm	345.0 mm	333.4 mm
2011	280.3 mm	104.9 mm	187.1 mm	226.8 mm	169.4 mm	145.9 mm	83.8 mm	142.1 mm	218.1 mm	299.2 mm	274.2 mm	422.4 mm
2010	292.6 mm	190.0 mm	186.4 mm	292.9 mm	184.1 mm	147.3 mm	190.8 mm	148.9 mm	378.3 mm	122.0 mm	278.5 mm	129.6 mm
2009	188.3 mm	154.6 mm	231.9 mm	177.7 mm	135.7 mm	111.4 mm	94.8 mm	167.8 mm	207.1 mm	240.6 mm	353.4 mm	333.9 mm
2008	220.8 mm	108.4 mm	346.6 mm	241.0 mm	145.4 mm	202.7 mm	201.3 mm	237.6 mm	203.6 mm	325.2 mm	288.7 mm	206.6 mm
2007	381.2 mm	132.9 mm	145.7 mm	301.4 mm	240.5 mm	171.9 mm	173.9 mm	184.1 mm	173.0 mm	295.5 mm	286.0 mm	341.7 mm
2006	377.5 mm	173.8 mm	182.3 mm	170.1 mm	158.2 mm	155.0 mm	101.8 mm	101.7 mm	164.9 mm	213.3 mm	281.3 mm	425.0 mm
2005	122.5 mm	88.8 mm	220.0 mm	179.3 mm	172.3 mm	115.7 mm	118.1 mm	158.0 mm	136.6 mm	329.1 mm	209.7 mm	250.7 mm
2004	158.0 mm	154.1 mm	325.3 mm	215.2 mm	140.6 mm	75.4 mm	146.2 mm	89.4 mm	185.2 mm	338.8 mm	234.0 mm	213.7 mm
2003	276.4 mm	167.6 mm	203.5 mm	221.0 mm	134.0 mm	137.9 mm	132.2 mm	184.2 mm	270.6 mm	231.8 mm	407.8 mm	225.9 mm
2002	210.5 mm	73.0 mm	168.9 mm	224.0 mm	163.3 mm	135.4 mm	125.9 mm	120.0 mm	197.3 mm	155.8 mm	237.0 mm	283.0 mm
2001	231.2 mm	181.8 mm	184.5 mm	294.1 mm	158.2 mm	115.0 mm	126.2 mm	166.6 mm	254.9 mm	203.6 mm	289.1 mm	254.6 mm
2000	245.3 mm	173.1 mm	214.7 mm	240.3 mm	124.2 mm	142.3 mm	109.3 mm	137.5 mm	146.8 mm	157.8 mm	237.1 mm	226.1 mm
1999	195.1 mm	161.6 mm	211.3 mm	101.5 mm	181.7 mm	131.5 mm	102.7 mm	226.5 mm	254.0 mm	286.7 mm	149.4 mm	159.5 mm
1998	250.4 mm	169.7 mm	186.3 mm	159.5 mm	193.7 mm	134.2 mm	181.7 mm	281.2 mm	193.4 mm	175.2 mm	88.1 mm	238.9 mm
1997	99.3 mm	162.0 mm	239.1 mm	216.4 mm	112.6 mm	97.1 mm	114.3 mm	154.6 mm	96.3 mm	189.4 mm	251.5 mm	273.9 mm
1996	197.9 mm	224.0 mm	169.0 mm	326.4 mm	153.4 mm	153.5 mm	104.6 mm	243.6 mm	217.3 mm	265.2 mm	230.2 mm	245.4 mm
1995	296.2 mm	287.9 mm	254.6 mm	306.5 mm	216.2 mm	182.0 mm	108.5 mm	202.0 mm	164.6 mm	278.8 mm	222.3 mm	228.3 mm
1994	171.6 mm	148.0 mm	367.1 mm	258.0 mm	288.3 mm	145.7 mm	51.2 mm	148.6 mm	196.3 mm	221.3 mm	388.9 mm	147.4 mm
1993	241.8 mm	146.4 mm	253.9 mm	206.7 mm	249.0 mm	143.7 mm	204.3 mm	108.9 mm	200.7 mm	338.3 mm	483.9 mm	300.6 mm
1992	151.2 mm	175.5 mm	158.5 mm	195.8 mm	209.9 mm	87.1 mm	194.6 mm	133.9 mm	207.9 mm	230.7 mm	379.8 mm	344.7 mm
1991	211.1 mm	93.9 mm	245.9 mm	224.7 mm	289.5 mm	84.9 mm	69.9 mm	122.4 mm	186.7 mm	285.6 mm	371.6 mm	398.6 mm
1990	144.5 mm	142.1 mm	147.9 mm	215.9 mm	165.0 mm	116.2 mm	162.2 mm	107.4 mm	223.1 mm	275.1 mm	205.5 mm	251.9 mm
1989	288.3 mm	135.2 mm	211.1 mm	175.8 mm	168.6 mm	139.3 mm	137.8 mm	131.2 mm	270.8 mm	344.7 mm	338.5 mm	201.6 mm
1988	230.7 mm	184.7 mm	269.4 mm	231.9 mm	248.2 mm	137.6 mm	116.7 mm	290.7 mm	200.7 mm	129.6 mm	256.2 mm	206.1 mm
1987	188.9 mm	69.6 mm	222.0 mm	227.6 mm	187.3 mm	116.0 mm	123.9 mm	168.8 mm	237.5 mm	231.2 mm	246.6 mm	237.8 mm
1986	252.5 mm	116.8 mm	370.0 mm	274.8 mm	181.3 mm	111.8 mm	103.1 mm	130.4 mm	327.1 mm	303.6 mm	182.7 mm	253.2 mm
1985	196.7 mm	153.4 mm	200.2 mm	140.2 mm	211.5 mm	48.3 mm	127.8 mm	179.5 mm	233.2 mm	238.7 mm	274.2 mm	224.8 mm
1984	272.0 mm	244.3 mm	255.5 mm	224.2 mm	202.8 mm	147.7 mm	166.0 mm	148.0 mm	267.6 mm	309.9 mm	215.0 mm	255.4 mm
1983	166.8 mm	75.9 mm	109.2 mm	116.5 mm	213.2 mm	84.0 mm	121.1 mm	132.3 mm	185.4 mm	242.3 mm	183.9 mm	235.1 mm
1982	81.1 mm	120.3 mm	274.1 mm	249.3 mm	173.1 mm	88.2 mm	69.9 mm	108.1 mm	142.5 mm	239.3 mm	279.7 mm	232.3 mm
1981	131.6 mm	127.2 mm	131.5 mm	196.7 mm	171.7 mm	72.3 mm	92.1 mm	82.2 mm	189.8 mm	271.4 mm	161.1 mm	191.7 mm
1980	126.4 mm	115.6 mm	184.6 mm	203.4 mm	138.6 mm	97.5 mm	107.8 mm	102.2 mm	162.3 mm	290.0 mm	315.6 mm	208.8 mm
1979	95.5 mm	135.3 mm	106.7 mm	195.6 mm	99.2 mm	128.4 mm	84.8 mm	117.6 mm	198.4 mm	222.6 mm	326.0 mm	153.5 mm
1978	123.5 mm	150.4 mm	143.5 mm	162.8 mm	161.6 mm	81.0 mm	118.0 mm	158.6 mm	187.7 mm	298.5 mm	250.2 mm	188.1 mm
1977	139.7 mm	127.6 mm	119.9 mm	138.4 mm	127.2 mm	90.9 mm	115.7 mm	192.0 mm	162.3 mm	219.0 mm	332.8 mm	187.3 mm
1976	88.2 mm	56.6 mm	145.6 mm	190.2 mm	83.3 mm	75.2 mm	114.5 mm	147.4 mm	128.9 mm	246.4 mm	214.3 mm	202.4 mm
1975	97.8 mm	124.1 mm	125.8 mm	185.9 mm	147.9 mm	102.8 mm	127.0 mm	129.5 mm	231.8 mm	123.5 mm	232.5 mm	195.5 mm
1974	85.0 mm	168.5 mm	116.8 mm	161.9 mm	155.2 mm	89.3 mm	156.6 mm	151.4 mm	239.0 mm	226.5 mm	226.3 mm	192.7 mm
1973	124.9 mm	157.6 mm	181.3 mm	167.0 mm	146.5 mm	81.1 mm	70.5 mm	148.9 mm	181.0 mm	238.3 mm	211.0 mm	204.6 mm
1972	80.8 mm	127.5 mm	131.0 mm	190.6 mm	138.9 mm	65.5 mm	30.8 mm	139.1 mm	212.0 mm	204.3 mm	175.4 mm	245.5 mm
1971	143.2 mm	140.7 mm	157.5 mm	144.8 mm	135.1 mm	72.2 mm	89.9 mm	195.8 mm	139.1 mm	181.4 mm	180.7 mm	227.9 mm
1970	193.5 mm	93.4 mm	149.5 mm	257.5 mm	121.6 mm	89.8 mm	80.6 mm	113.5 mm	194.4 mm	191.2 mm	198.1 mm	172.7 mm
1969	165.6 mm	88.3 mm	207.2 mm	235.3 mm	237.8 mm	120.8 mm	60.8 mm	143.2 mm	234.0 mm	183.0 mm	299.1 mm	187.3 mm
1968	219.3 mm	68.9 mm	223.2 mm	187.0 mm	147.4 mm	141.0 mm	114.9 mm	116.6 mm	145.4 mm	240.2 mm	279.4 mm	215.2 mm
1967	270.0 mm	179.7 mm	143.1 mm	225.4 mm	191.1 mm	132.6 mm	90.4 mm	84.2 mm	165.7 mm	253.0 mm	293.0 mm	270.5 mm
1966	234.0 mm	208.1 mm	223.4 mm	255.6 mm	153.2 mm	85.6 mm	79.0 mm	204.3 mm	203.9 mm	242.0 mm	208.4 mm	262.5 mm
1965	70.3 mm	218.7 mm	198.4 mm	228.4 mm	168.5 mm	102.7 mm	74.4 mm	159.3 mm	133.8 mm	212.8 mm	218.9 mm	282.8 mm
1964	173.7 mm	298.5 mm	166.3 mm	187.3 mm	91.8 mm	68.0 mm	187.1 mm	98.2 mm	223.7 mm	227.6 mm	172.2 mm	396.2 mm
1963	126.7 mm	141.4 mm	101.7 mm	111.3 mm	139.7 mm	55.2 mm	80.8 mm	92.6 mm	105.8 mm	246.4 mm	194.5 mm	253.9 mm
1962	183.9 mm	115.2 mm	288.4 mm	155.5 mm	146.6 mm	96.2 mm	32.3 mm	189.4 mm	161.1 mm	192.8 mm	188.9 mm	157.6 mm
1961	141.6 mm	145.0 mm	188.6 mm	227.0 mm	153.3 mm	65.3 mm	50.9 mm	57.7 mm	129.7 mm	169.0 mm	215.5 mm	214.6 mm
1960	173.1 mm	109.4 mm	180.1 mm	187.2 mm	129.0 mm	86.2 mm	127.4 mm	153.9 mm	228.6 mm	219.4 mm	189.2 mm	236.8 mm
1959	246.6 mm	175.3 mm	195.2 mm	230.0 mm	192.7 mm	159.7 mm	86.0 mm	69.6 mm	160.0 mm	279.8 mm	282.7 mm	238.5 mm
1958	144.5 mm	190.9 mm	262.5 mm	197.6 mm	230.2 mm	85.2 mm	63.2 mm	222.4 mm	208.3 mm	310.6 mm	295.9 mm	198.9 mm
1957	201.3 mm	119.1 mm	259.0 mm	230.1 mm	286.0 mm	86.0 mm	131.1 mm	99.6 mm	214.3 mm	218.3 mm	263.1 mm	327.3 mm
1956	276.2 mm	165.4 mm	191.0 mm	180.2 mm	123.6 mm	70.6 mm	75.8 mm	183.2 mm	236.9 mm	325.0 mm	388.1 mm	273.4 mm
1955	365.2 mm	138.5 mm	206.9 mm	249.0 mm	140.9 mm	139.0 mm	120.7 mm	188.0 mm	253.1 mm	287.8 mm	165.4 mm	271.3 mm
1954	205.4 mm	229.5 mm	265.2 mm	224.0 mm	238.9 mm	133.0 mm	226.6 mm	178.0 mm	209.9 mm	294.0 mm	229.6 mm	275.9 mm
1953	189.4 mm	131.7 mm	226.5 mm	206.7 mm	237.8 mm	94.5 mm	100.4 mm	105.9 mm	111.7 mm	161.2 mm	266.6 mm	224.9 mm
1952	310.8 mm	136.6 mm	246.9 mm	247.4 mm	170.7 mm	63.3 mm	82.3 mm	156.9 mm	182.7 mm	236.5 mm	230.1 mm	155.1 mm
1951	102.1 mm	90.7 mm	102.9 mm	91.4 mm	80.8 mm	85.1 mm	124.1 mm	130.8 mm	106.5 mm	144.1 mm	220.2 mm	213.9 mm
1950	44.4 mm	182.7 mm	149.3 mm	216.2 mm	183.0 mm	136.4 mm	126.6 mm	194.2 mm	272.7 mm	164.9 mm	150.2 mm	134.7 mm

Your baseline

Since 1950, Pekanbaru’s average daily high has moved +0.9 °C.

Compare against1950–2006

An endpoint comparison, not the fitted trend in “what moved most” above — the two answer different questions and will not agree. This compares the 10-year mean starting at your baseline against the last 10 complete years (2016–2025), using monthly average daily maximum. Both ends are decade means so one strong El Niño cannot pass for a trend. Baselines after 2006 are not offered — too few years remain for the comparison to mean anything.

How does Pekanbaru compare?

Put it side by side with another Indonesian city.

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