Pematangsiantar

Sumatera Utara

2.959°, 99.069°

Record: 1950–2026
Years: 77

Average daily high in Pematangsiantar is trending hotter — 0.1 °C per decade.

Averaged over the first ten years of the record it was 27.28; over the last ten, 27.9 (°C, 1950–2025).

Unusually hot days: ↑ 2.6 days / decade
Heavy rain days: ↑ 0.1 days / decade
Longest hot spell: ↑ 0.5 days / 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.

Jul 2026 in Pematangsiantar — 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

130°6mm
229°10mm
330°0mm
429°6mm
528°5mm
630°0mm
730°6mm
831°2mm
932°1mm
1029°3mm
1130°3mm
1230°3mm
1329°3mm
1429°1mm
1531°1mm
1628°3mm
1727°13mm
1825°12mm
1928°19mm
2028°16mm
2129°8mm
2227°7mm
2330°5mm
2429°6mm
2528°16mm
2628°9mm
2728°1mm
2827°2mm
2927°5mm
3029°9mm
3128°1mm

A “hot day” is any day above 29.4°C. Drag to see the rule change what it counts.

25°C33°C

10 of 31 days in Jul 2026 qualify.

Those 31 days collapse into three numbers. That is the whole of what “a month” means on this site:

Add them up: 182.1 mm; Total rainfall. This is the value the Rainfall fingerprint paints for Jul 2026.
Average them: 28.8°C; Mean daily high — not the hottest day, the typical one.
Count them: 10 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 182.1 mm and 28.8°C for Jul 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 Pematangsiantar, 1950 to 2026, in mm
Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2026	166.3 mm	160.3 mm	181.6 mm	324.9 mm	280.9 mm	285.7 mm	182.1 mm	16.8 mm	no data	no data	no data	no data
2025	365.1 mm	223.9 mm	255.9 mm	303.3 mm	288.5 mm	103.8 mm	85.2 mm	161.2 mm	241.6 mm	290.5 mm	432.4 mm	251.9 mm
2024	288.7 mm	178.0 mm	248.8 mm	254.9 mm	309.5 mm	254.2 mm	134.4 mm	436.6 mm	350.4 mm	386.3 mm	436.1 mm	364.2 mm
2023	231.7 mm	254.5 mm	250.0 mm	207.8 mm	305.3 mm	248.5 mm	214.1 mm	438.4 mm	378.7 mm	453.3 mm	409.3 mm	360.1 mm
2022	234.4 mm	212.4 mm	292.1 mm	390.1 mm	236.6 mm	366.9 mm	218.4 mm	331.2 mm	352.4 mm	362.7 mm	395.7 mm	435.1 mm
2021	329.1 mm	144.2 mm	325.4 mm	296.9 mm	283.6 mm	183.7 mm	202.6 mm	327.0 mm	274.3 mm	287.7 mm	371.2 mm	259.8 mm
2020	170.4 mm	166.8 mm	228.2 mm	299.1 mm	330.4 mm	306.1 mm	291.1 mm	197.4 mm	352.6 mm	200.8 mm	616.6 mm	338.8 mm
2019	226.3 mm	185.6 mm	172.6 mm	292.9 mm	306.8 mm	246.1 mm	176.9 mm	124.8 mm	231.0 mm	381.6 mm	336.8 mm	329.4 mm
2018	235.4 mm	171.0 mm	176.1 mm	273.3 mm	295.8 mm	140.5 mm	174.4 mm	96.8 mm	355.9 mm	384.5 mm	297.2 mm	236.6 mm
2017	375.4 mm	187.2 mm	368.8 mm	269.5 mm	285.7 mm	184.6 mm	185.1 mm	333.8 mm	368.7 mm	255.7 mm	382.9 mm	276.5 mm
2016	162.6 mm	270.3 mm	112.8 mm	183.8 mm	193.0 mm	198.5 mm	240.6 mm	188.1 mm	227.4 mm	301.6 mm	366.9 mm	313.6 mm
2015	241.0 mm	112.4 mm	142.9 mm	217.8 mm	275.1 mm	182.9 mm	270.4 mm	341.3 mm	231.6 mm	432.1 mm	387.9 mm	247.8 mm
2014	160.1 mm	115.2 mm	183.5 mm	221.1 mm	261.1 mm	134.9 mm	121.7 mm	377.4 mm	348.4 mm	338.5 mm	333.9 mm	391.2 mm
2013	296.3 mm	304.7 mm	180.4 mm	228.6 mm	283.0 mm	136.5 mm	198.5 mm	284.0 mm	265.1 mm	394.2 mm	305.6 mm	631.6 mm
2012	192.0 mm	252.3 mm	189.2 mm	324.9 mm	260.7 mm	157.1 mm	279.0 mm	212.2 mm	275.6 mm	399.7 mm	362.1 mm	315.5 mm
2011	342.6 mm	177.2 mm	334.4 mm	298.4 mm	235.3 mm	292.7 mm	198.5 mm	334.7 mm	322.1 mm	389.4 mm	306.5 mm	372.1 mm
2010	284.6 mm	142.1 mm	228.2 mm	168.9 mm	181.3 mm	291.3 mm	428.6 mm	274.0 mm	354.4 mm	285.8 mm	389.9 mm	307.2 mm
2009	316.3 mm	144.2 mm	373.9 mm	237.5 mm	305.5 mm	203.6 mm	229.1 mm	327.7 mm	365.5 mm	377.8 mm	337.7 mm	320.5 mm
2008	233.8 mm	109.8 mm	424.8 mm	323.6 mm	252.1 mm	280.7 mm	359.3 mm	310.8 mm	448.4 mm	372.0 mm	363.5 mm	353.1 mm
2007	269.8 mm	177.0 mm	161.6 mm	395.5 mm	351.2 mm	254.9 mm	364.9 mm	290.4 mm	368.8 mm	393.8 mm	359.2 mm	288.5 mm
2006	268.7 mm	281.6 mm	214.3 mm	292.3 mm	215.8 mm	249.1 mm	190.8 mm	277.8 mm	320.0 mm	362.9 mm	335.0 mm	387.1 mm
2005	266.0 mm	91.2 mm	186.2 mm	172.9 mm	247.0 mm	224.8 mm	218.9 mm	190.1 mm	218.2 mm	396.0 mm	337.9 mm	290.6 mm
2004	143.9 mm	214.5 mm	240.4 mm	194.9 mm	199.6 mm	180.6 mm	204.3 mm	232.4 mm	340.5 mm	427.5 mm	259.2 mm	264.2 mm
2003	204.8 mm	164.3 mm	187.1 mm	217.4 mm	176.2 mm	238.4 mm	274.6 mm	239.1 mm	365.9 mm	376.9 mm	294.2 mm	190.3 mm
2002	236.9 mm	153.9 mm	179.8 mm	246.7 mm	316.9 mm	241.3 mm	199.9 mm	206.3 mm	425.6 mm	367.9 mm	284.6 mm	212.8 mm
2001	332.6 mm	195.9 mm	245.1 mm	254.5 mm	242.9 mm	168.2 mm	203.3 mm	234.2 mm	403.6 mm	367.3 mm	489.0 mm	333.2 mm
2000	211.9 mm	222.0 mm	281.6 mm	304.8 mm	186.5 mm	228.8 mm	194.4 mm	222.4 mm	478.2 mm	270.5 mm	279.9 mm	190.5 mm
1999	268.8 mm	269.1 mm	295.1 mm	276.7 mm	299.5 mm	269.9 mm	170.0 mm	280.8 mm	409.0 mm	364.3 mm	227.2 mm	306.0 mm
1998	210.5 mm	140.6 mm	122.4 mm	165.8 mm	229.6 mm	284.5 mm	308.8 mm	412.2 mm	390.3 mm	393.9 mm	270.6 mm	324.6 mm
1997	177.0 mm	195.2 mm	173.3 mm	300.4 mm	186.7 mm	243.7 mm	251.7 mm	213.9 mm	319.5 mm	359.2 mm	387.0 mm	228.6 mm
1996	226.8 mm	348.1 mm	169.7 mm	344.6 mm	199.8 mm	281.4 mm	187.9 mm	383.3 mm	354.8 mm	348.4 mm	357.9 mm	321.9 mm
1995	365.1 mm	189.7 mm	205.1 mm	197.4 mm	283.4 mm	231.6 mm	276.3 mm	466.5 mm	512.4 mm	379.5 mm	370.9 mm	274.2 mm
1994	229.3 mm	229.3 mm	379.8 mm	328.9 mm	339.9 mm	207.3 mm	121.7 mm	295.6 mm	440.3 mm	392.4 mm	435.8 mm	331.0 mm
1993	203.1 mm	164.7 mm	240.0 mm	237.6 mm	303.6 mm	235.4 mm	280.6 mm	286.8 mm	435.7 mm	461.3 mm	409.8 mm	429.9 mm
1992	238.1 mm	201.8 mm	166.6 mm	210.1 mm	272.2 mm	238.7 mm	276.8 mm	234.9 mm	358.4 mm	315.7 mm	421.4 mm	260.0 mm
1991	156.5 mm	104.5 mm	223.4 mm	194.6 mm	286.5 mm	146.3 mm	160.6 mm	250.3 mm	379.2 mm	521.5 mm	334.4 mm	362.3 mm
1990	170.1 mm	117.7 mm	145.0 mm	249.8 mm	276.1 mm	171.4 mm	199.0 mm	96.8 mm	397.7 mm	441.4 mm	340.1 mm	246.0 mm
1989	211.7 mm	109.3 mm	278.5 mm	309.5 mm	301.8 mm	185.3 mm	235.5 mm	265.7 mm	454.3 mm	398.6 mm	327.7 mm	224.4 mm
1988	252.5 mm	212.9 mm	239.2 mm	194.0 mm	300.2 mm	217.3 mm	284.9 mm	396.4 mm	453.2 mm	258.0 mm	330.2 mm	271.7 mm
1987	206.9 mm	81.3 mm	220.3 mm	251.9 mm	230.2 mm	208.4 mm	229.8 mm	352.7 mm	528.4 mm	480.4 mm	330.6 mm	328.5 mm
1986	245.9 mm	132.4 mm	326.8 mm	320.8 mm	231.4 mm	210.1 mm	179.9 mm	196.8 mm	361.4 mm	412.3 mm	320.8 mm	326.7 mm
1985	162.3 mm	236.7 mm	227.2 mm	231.1 mm	298.2 mm	90.1 mm	162.6 mm	364.2 mm	337.6 mm	406.2 mm	357.3 mm	279.4 mm
1984	294.8 mm	317.3 mm	276.3 mm	373.3 mm	365.6 mm	160.7 mm	354.4 mm	250.0 mm	302.6 mm	421.0 mm	265.8 mm	240.5 mm
1983	129.4 mm	117.9 mm	120.9 mm	157.4 mm	201.0 mm	164.1 mm	262.1 mm	252.9 mm	346.4 mm	475.7 mm	285.7 mm	302.5 mm
1982	87.7 mm	141.2 mm	243.0 mm	343.4 mm	291.5 mm	199.7 mm	213.0 mm	226.5 mm	313.8 mm	335.6 mm	281.3 mm	277.3 mm
1981	224.3 mm	170.2 mm	101.7 mm	250.2 mm	310.1 mm	138.3 mm	263.6 mm	185.2 mm	330.0 mm	345.6 mm	348.6 mm	251.3 mm
1980	173.0 mm	112.8 mm	221.3 mm	230.3 mm	277.3 mm	197.2 mm	198.1 mm	227.9 mm	286.1 mm	368.3 mm	321.5 mm	344.5 mm
1979	129.8 mm	150.8 mm	128.9 mm	271.9 mm	184.7 mm	270.3 mm	226.1 mm	206.7 mm	349.4 mm	350.1 mm	472.0 mm	164.4 mm
1978	148.7 mm	130.6 mm	167.2 mm	151.0 mm	263.6 mm	174.5 mm	246.0 mm	243.7 mm	367.1 mm	391.1 mm	312.8 mm	201.4 mm
1977	135.6 mm	181.9 mm	95.5 mm	161.1 mm	163.9 mm	129.6 mm	221.0 mm	382.7 mm	310.0 mm	510.1 mm	405.1 mm	234.0 mm
1976	136.7 mm	132.9 mm	144.7 mm	202.1 mm	195.2 mm	193.7 mm	166.2 mm	272.9 mm	384.8 mm	335.4 mm	354.9 mm	231.0 mm
1975	100.4 mm	155.2 mm	140.1 mm	259.1 mm	202.8 mm	172.1 mm	154.3 mm	226.3 mm	438.1 mm	354.5 mm	365.0 mm	276.1 mm
1974	194.1 mm	237.2 mm	112.1 mm	234.7 mm	276.7 mm	183.8 mm	221.3 mm	282.6 mm	338.4 mm	287.4 mm	350.0 mm	178.0 mm
1973	134.9 mm	162.8 mm	224.3 mm	250.7 mm	188.8 mm	233.6 mm	149.9 mm	328.3 mm	336.5 mm	304.1 mm	340.0 mm	367.0 mm
1972	89.1 mm	159.6 mm	126.6 mm	256.2 mm	228.4 mm	169.6 mm	113.9 mm	301.2 mm	433.6 mm	386.4 mm	341.2 mm	294.1 mm
1971	367.8 mm	210.8 mm	243.2 mm	142.4 mm	230.0 mm	177.1 mm	193.9 mm	394.7 mm	338.5 mm	262.3 mm	195.3 mm	336.8 mm
1970	190.1 mm	105.0 mm	161.5 mm	248.9 mm	261.3 mm	232.6 mm	170.5 mm	201.7 mm	363.0 mm	427.6 mm	395.5 mm	218.6 mm
1969	222.0 mm	122.3 mm	189.6 mm	177.0 mm	300.8 mm	227.6 mm	193.3 mm	292.4 mm	348.8 mm	297.9 mm	433.3 mm	327.7 mm
1968	229.0 mm	87.5 mm	210.4 mm	202.6 mm	248.3 mm	216.5 mm	202.3 mm	265.7 mm	437.8 mm	330.7 mm	248.5 mm	259.4 mm
1967	232.6 mm	197.6 mm	179.4 mm	237.4 mm	235.0 mm	220.3 mm	233.2 mm	303.7 mm	315.0 mm	393.0 mm	399.2 mm	268.1 mm
1966	267.9 mm	201.2 mm	274.7 mm	258.1 mm	263.0 mm	204.5 mm	316.0 mm	384.8 mm	316.7 mm	526.8 mm	423.4 mm	344.6 mm
1965	79.5 mm	211.8 mm	242.3 mm	324.2 mm	332.0 mm	135.5 mm	164.5 mm	330.9 mm	420.4 mm	380.3 mm	327.9 mm	342.1 mm
1964	185.8 mm	195.3 mm	213.4 mm	165.3 mm	157.7 mm	119.6 mm	224.8 mm	176.2 mm	334.0 mm	361.3 mm	362.2 mm	373.4 mm
1963	200.2 mm	159.7 mm	191.0 mm	104.1 mm	201.4 mm	153.0 mm	174.5 mm	264.8 mm	297.9 mm	440.8 mm	240.2 mm	263.9 mm
1962	245.6 mm	132.3 mm	317.0 mm	225.8 mm	220.9 mm	180.3 mm	122.4 mm	273.1 mm	275.4 mm	348.2 mm	314.4 mm	315.4 mm
1961	224.6 mm	183.5 mm	193.9 mm	216.0 mm	272.1 mm	119.2 mm	192.0 mm	164.4 mm	296.4 mm	317.1 mm	381.5 mm	333.9 mm
1960	248.5 mm	183.4 mm	159.6 mm	238.3 mm	285.3 mm	204.7 mm	293.7 mm	273.5 mm	334.0 mm	386.0 mm	307.7 mm	263.5 mm
1959	145.5 mm	146.3 mm	208.7 mm	260.8 mm	271.0 mm	271.1 mm	237.6 mm	219.4 mm	387.1 mm	419.1 mm	394.7 mm	234.6 mm
1958	208.3 mm	170.5 mm	203.7 mm	171.1 mm	223.8 mm	179.3 mm	112.4 mm	255.3 mm	341.1 mm	569.6 mm	311.8 mm	209.0 mm
1957	213.3 mm	112.7 mm	246.3 mm	260.7 mm	365.3 mm	192.7 mm	190.8 mm	250.2 mm	418.3 mm	398.0 mm	361.9 mm	268.5 mm
1956	258.2 mm	188.7 mm	196.2 mm	278.9 mm	306.9 mm	212.5 mm	185.0 mm	282.2 mm	372.1 mm	586.2 mm	460.7 mm	439.1 mm
1955	322.6 mm	247.5 mm	238.4 mm	307.0 mm	209.3 mm	184.8 mm	269.2 mm	350.4 mm	354.5 mm	381.1 mm	244.6 mm	318.6 mm
1954	196.5 mm	250.5 mm	240.1 mm	320.6 mm	267.2 mm	270.6 mm	309.6 mm	357.5 mm	335.7 mm	410.2 mm	377.3 mm	410.6 mm
1953	261.2 mm	155.2 mm	203.1 mm	308.1 mm	382.3 mm	237.8 mm	215.9 mm	215.9 mm	317.2 mm	372.0 mm	395.0 mm	336.4 mm
1952	297.2 mm	202.3 mm	301.0 mm	253.3 mm	294.7 mm	231.6 mm	317.6 mm	232.2 mm	344.2 mm	323.0 mm	381.2 mm	134.0 mm
1951	149.8 mm	182.2 mm	84.1 mm	150.8 mm	133.6 mm	162.9 mm	183.4 mm	239.5 mm	218.9 mm	327.1 mm	359.6 mm	225.1 mm
1950	58.1 mm	270.2 mm	234.1 mm	287.8 mm	257.5 mm	268.1 mm	302.4 mm	320.4 mm	386.7 mm	299.6 mm	187.9 mm	149.9 mm

Your baseline

Since 1950, Pematangsiantar’s average daily high has moved +0.6 °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 Pematangsiantar compare?

Put it side by side with another Indonesian city.

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