Tarutung climate — normals and trends

Q: What is the climate of Tarutung?

Tarutung has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 20.4 °C and it receives 2,909 mm of precipitation per year.

Q: What is the hottest day ever recorded in Tarutung?

The hottest day measured in Tarutung between 1940 and 2025 was 22 August 1981, reaching 31.4 °C.

Q: What is the coldest day in Tarutung?

The coldest day measured in Tarutung between 1940 and 2025 was 4 January 1951, at 11.6 °C.

Q: Does it snow in Tarutung?

Almost never: Tarutung sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Tarutung warmed?

Yes: Tarutung warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Tarutung?

The wettest day measured in Tarutung between 1940 and 2025 was 25 December 2017, with 161 mm of rain in 24 hours.

Q: What was the windiest day in Tarutung?

The windiest day measured in Tarutung between 1940 and 2025 was 11 July 1986, with winds reaching 23.6 km/h.

Q: What is the warmest month in Tarutung?

The warmest month in Tarutung is May (21.1 °C on average); the coldest is September (20.1 °C).

Q: How much does it rain in Tarutung?

Tarutung receives on average 2,909 mm of precipitation per year, spread over about 293 rainy days.

Q: Is it sunny in Tarutung?

Tarutung gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.

Tarutung (Indonesia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 20.4 °C and it receives 2,909 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 (21.1 °C on average) and the coldest is September (20.1 °C). Rainfall peaks in November.

Tarutung averages 0 frost days, 1 hot days (≥ 30 °C) and 293 rainy days per year.

Tarutung has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.

The hottest day of the period reached 31.4 °C (on 22 August 1981) and the coldest 11.6 °C (on 4 January 1951).

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

TarutungNorth Sumatra

coords: 2.01°, 98.97°
period: 1940–2025 · 86 yrs

AfTropical rainforestWarmest monthMayColdest monthSeptemberWettest monthNovemberDriest monthJune

Mean daily temperature

20.4°C

Average daily high

25.9°C

Average daily low

16.9°C

Annual rainfall

2,909mm

Sunshine / day

9.1h

Mean relative humidity

88%

Average peak wind

8.6km/h

Seasonal range

1.0°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

1 d/yr

Rainy days (≥ 1 mm)

293 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.5 °C

Average feels-like low

18.7 °C

Average peak gust

29.6 km/h

Tropical nights (≥ 20 °C)

1 d/yr

Solar radiation

17.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.1 °C

since 1940

+0.2 °C per decade · r² = 0.87 · p = < 0.001

19402025

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

31.4 °C

22 August 1981

Coldest day

11.6 °C

4 January 1951

Wettest day

161 mm

25 December 2017

Windiest day

23.6 km/h

11 July 1986

Strongest gust

65.9 km/h

5 January 2017

Hottest feels-like

36.8 °C

17 March 2013

Coldest feels-like

11.0 °C

4 January 1951

Sunniest day

12.1 h

12 July 1970

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	30.1 °C3 June 2025	15.0 °C8 October 2025	21.3 °C	2,966 mm	1
2024	30.7 °C28 March 2024	15.7 °C20 October 2024	21.9 °C	3,869 mm	6
2023	30.2 °C13 May 2023	15.4 °C12 January 2023	21.4 °C	3,650 mm	3
2022	30.2 °C28 March 2022	14.3 °C27 March 2022	21.0 °C	3,084 mm	2
2021	29.9 °C3 October 2021	15.5 °C18 June 2021	21.2 °C	3,187 mm	0
2020	30.3 °C29 February 2020	16.1 °C10 September 2020	21.5 °C	3,434 mm	2
2019	30.4 °C26 February 2019	14.7 °C16 September 2019	21.4 °C	2,956 mm	2
2018	29.9 °C12 April 2018	14.2 °C12 January 2018	21.1 °C	3,952 mm	0
2017	29.9 °C20 October 2017	15.1 °C17 January 2017	21.2 °C	3,734 mm	0
2016	30.9 °C4 May 2016	15.2 °C4 July 2016	21.5 °C	2,752 mm	2
2015	31.0 °C30 June 2015	14.9 °C3 February 2015	21.4 °C	3,588 mm	4
2014	30.9 °C12 February 2014	13.8 °C9 February 2014	21.2 °C	3,515 mm	8
2013	30.6 °C17 March 2013	13.5 °C23 July 2013	21.1 °C	3,132 mm	1
2012	29.7 °C16 November 2012	13.9 °C14 June 2012	21.1 °C	3,543 mm	0
2011	29.7 °C10 February 2011	13.5 °C10 February 2011	21.1 °C	3,154 mm	0
2010	31.0 °C13 April 2010	14.6 °C19 October 2010	21.5 °C	3,451 mm	8
2009	29.9 °C25 May 2009	15.3 °C12 January 2009	21.1 °C	3,017 mm	0
2008	29.8 °C6 February 2008	13.6 °C1 August 2008	20.9 °C	3,706 mm	0
2007	30.3 °C11 February 2007	13.3 °C7 January 2007	21.0 °C	3,296 mm	1
2006	29.6 °C1 March 2006	13.6 °C30 January 2006	21.1 °C	3,359 mm	0
2005	29.9 °C1 March 2005	14.5 °C11 September 2005	21.1 °C	2,548 mm	0
2004	30.2 °C12 April 2004	13.8 °C8 August 2004	21.0 °C	3,276 mm	1
2003	31.3 °C8 June 2003	14.0 °C19 May 2003	21.1 °C	3,261 mm	3
2002	29.6 °C2 April 2002	14.6 °C21 August 2002	21.1 °C	3,528 mm	0
2001	29.6 °C9 July 2001	13.8 °C7 July 2001	20.9 °C	2,641 mm	0
2000	30.7 °C7 March 2000	12.8 °C15 July 2000	20.8 °C	2,735 mm	1
1999	28.9 °C1 June 1999	14.2 °C19 July 1999	20.5 °C	3,031 mm	0
1998	31.0 °C20 May 1998	15.7 °C23 January 1998	21.4 °C	2,578 mm	14
1997	29.6 °C26 March 1997	14.5 °C17 July 1997	21.0 °C	2,943 mm	0
1996	29.9 °C15 March 1996	14.7 °C26 January 1996	20.7 °C	2,941 mm	0
1995	29.8 °C15 May 1995	14.6 °C15 May 1995	20.9 °C	3,207 mm	0
1994	28.8 °C4 November 1994	14.0 °C23 February 1994	20.7 °C	3,510 mm	0
1993	29.7 °C28 May 1993	14.6 °C22 January 1993	20.6 °C	3,305 mm	0
1992	29.9 °C20 March 1992	14.2 °C2 September 1992	20.6 °C	2,601 mm	0
1991	29.4 °C17 June 1991	14.0 °C14 June 1991	20.5 °C	3,637 mm	0
1990	30.2 °C4 March 1990	12.9 °C29 June 1990	20.5 °C	2,557 mm	2
1989	29.3 °C18 December 1989	13.3 °C18 June 1989	20.4 °C	2,447 mm	0
1988	29.7 °C21 April 1988	14.3 °C17 July 1988	20.8 °C	3,286 mm	0
1987	30.0 °C30 July 1987	15.4 °C23 February 1987	20.9 °C	3,506 mm	1
1986	29.2 °C15 June 1986	13.1 °C20 July 1986	20.5 °C	2,640 mm	0
1985	30.7 °C25 February 1985	12.1 °C30 June 1985	20.3 °C	2,588 mm	1
1984	29.6 °C12 February 1984	14.3 °C15 August 1984	20.2 °C	3,094 mm	0
1983	30.2 °C17 March 1983	15.0 °C24 June 1983	20.9 °C	2,140 mm	2
1982	29.0 °C5 May 1982	13.7 °C15 September 1982	20.4 °C	2,836 mm	0
1981	31.4 °C22 August 1981	13.1 °C13 August 1981	20.5 °C	2,142 mm	7
1980	28.9 °C5 March 1980	13.4 °C29 January 1980	20.3 °C	2,648 mm	0
1979	30.1 °C7 April 1979	13.6 °C15 May 1979	20.4 °C	2,872 mm	1
1978	29.7 °C20 March 1978	14.4 °C4 October 1978	20.4 °C	2,473 mm	0
1977	29.8 °C18 April 1977	12.7 °C26 June 1977	20.3 °C	2,638 mm	0
1976	28.8 °C30 December 1976	12.8 °C6 December 1976	19.9 °C	2,856 mm	0
1975	29.0 °C29 April 1975	12.5 °C17 January 1975	19.8 °C	1,940 mm	0
1974	29.1 °C30 April 1974	13.2 °C4 July 1974	19.9 °C	2,276 mm	0
1973	30.6 °C4 May 1973	11.9 °C30 September 1973	20.2 °C	2,748 mm	1
1972	29.0 °C17 February 1972	12.6 °C12 January 1972	20.0 °C	2,811 mm	0
1971	29.4 °C3 October 1971	12.4 °C9 June 1971	19.8 °C	2,285 mm	0
1970	30.0 °C18 February 1970	12.4 °C6 December 1970	20.3 °C	2,323 mm	1
1969	29.6 °C9 April 1969	12.2 °C27 July 1969	20.3 °C	2,941 mm	0
1968	28.9 °C18 December 1968	13.2 °C22 February 1968	19.9 °C	2,622 mm	0
1967	29.3 °C16 July 1967	13.7 °C30 July 1967	19.8 °C	2,929 mm	0
1966	28.3 °C1 May 1966	13.0 °C26 July 1966	19.7 °C	3,085 mm	0
1965	29.6 °C1 March 1965	13.9 °C3 June 1965	19.9 °C	3,376 mm	0
1964	29.4 °C1 February 1964	13.6 °C1 July 1964	20.1 °C	2,661 mm	0
1963	29.8 °C7 June 1963	14.0 °C24 February 1963	20.2 °C	2,515 mm	0
1962	29.2 °C26 July 1962	13.7 °C22 July 1962	20.0 °C	2,889 mm	0
1961	30.1 °C11 July 1961	12.7 °C1 July 1961	20.0 °C	2,348 mm	2
1960	30.2 °C3 July 1960	12.7 °C3 July 1960	20.2 °C	2,562 mm	1
1959	30.1 °C4 September 1959	13.4 °C8 July 1959	20.1 °C	2,927 mm	1
1958	29.4 °C8 June 1958	13.4 °C7 July 1958	20.3 °C	3,070 mm	0
1957	29.1 °C28 December 1957	13.4 °C30 January 1957	19.9 °C	3,007 mm	0
1956	28.8 °C28 April 1956	13.0 °C1 July 1956	19.5 °C	3,301 mm	0
1955	28.0 °C13 February 1955	14.3 °C31 May 1955	19.6 °C	2,948 mm	0
1954	28.3 °C10 June 1954	14.2 °C1 July 1954	19.6 °C	3,407 mm	0
1953	28.2 °C3 July 1953	14.2 °C16 September 1953	20.1 °C	3,253 mm	0
1952	28.8 °C19 January 1952	14.7 °C18 February 1952	20.1 °C	2,872 mm	0
1951	28.3 °C8 April 1951	11.6 °C4 January 1951	20.0 °C	2,270 mm	0
1950	28.9 °C16 March 1950	13.4 °C22 January 1950	19.9 °C	2,298 mm	0
1949	30.5 °C6 April 1949	13.3 °C4 February 1949	20.2 °C	873 mm	5
1948	27.6 °C1 March 1948	13.6 °C28 February 1948	19.8 °C	2,267 mm	0
1947	27.6 °C24 April 1947	14.6 °C8 February 1947	19.5 °C	3,360 mm	0
1946	28.9 °C8 July 1946	12.6 °C5 August 1946	19.4 °C	3,054 mm	0
1945	26.7 °C11 August 1945	13.5 °C11 August 1945	19.1 °C	2,985 mm	0
1944	28.1 °C15 June 1944	13.2 °C3 February 1944	19.4 °C	2,438 mm	0
1943	27.7 °C12 July 1943	12.5 °C5 August 1943	19.3 °C	1,974 mm	0
1942	28.4 °C16 May 1942	12.9 °C9 July 1942	19.2 °C	2,516 mm	0
1941	27.8 °C8 July 1941	13.7 °C7 July 1941	19.4 °C	2,892 mm	0
1940	28.2 °C3 August 1940	12.5 °C24 June 1940	19.4 °C	2,302 mm	0

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

26.4 °C

+0.5 °C

Hot days (≥ 30 °C)

1 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2966 mm

+57 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	26.1 °C	+0.1 °C	411 mm	+183 mm
Feb	27.0 °C	+0.5 °C	202 mm	-7 mm
Mar	26.8 °C	+0.2 °C	298 mm	+30 mm
Apr	26.9 °C	+0.4 °C	371 mm	+80 mm
May	27.3 °C	+0.8 °C	90 mm	-113 mm
Jun	27.2 °C	+0.8 °C	81 mm	-44 mm
Jul	26.6 °C	+0.7 °C	85 mm	-67 mm
Aug	26.6 °C	+0.9 °C	172 mm	-30 mm
Sep	25.9 °C	+0.5 °C	209 mm	-46 mm
Oct	26.3 °C	+1.1 °C	184 mm	-141 mm
Nov	24.3 °C	-0.8 °C	507 mm	+160 mm
Dec	25.7 °C	+0.3 °C	356 mm	+52 mm

The year's extremes

Hottest day

30.1 °C

3 Jun 2025

Coldest day

15.0 °C

8 Oct 2025

Wettest day

85.4 mm

25 Nov 2025

Windiest day

23.2 km/h

20 Jul 2025

Strongest gust

65.9 km/h

23 Nov 2025

Hottest feels-like

35.3 °C

16 Mar 2025

Coldest feels-like

15.8 °C

8 Oct 2025

Sunniest day

11.9 h

22 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Tarutung?

Tarutung has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 20.4 °C and it receives 2,909 mm of precipitation per year.

What is the hottest day ever recorded in Tarutung?

The hottest day measured in Tarutung between 1940 and 2025 was 22 August 1981, reaching 31.4 °C.

What is the coldest day in Tarutung?

The coldest day measured in Tarutung between 1940 and 2025 was 4 January 1951, at 11.6 °C.

Does it snow in Tarutung?

Almost never: Tarutung sees virtually no snow, with about 0 frost days per year.

Has the climate of Tarutung warmed?

Yes: Tarutung warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Tarutung?

The wettest day measured in Tarutung between 1940 and 2025 was 25 December 2017, with 161 mm of rain in 24 hours.

What was the windiest day in Tarutung?

The windiest day measured in Tarutung between 1940 and 2025 was 11 July 1986, with winds reaching 23.6 km/h.

What is the warmest month in Tarutung?

The warmest month in Tarutung is May (21.1 °C on average); the coldest is September (20.1 °C).

How much does it rain in Tarutung?

Tarutung receives on average 2,909 mm of precipitation per year, spread over about 293 rainy days.

Is it sunny in Tarutung?

Tarutung gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.

Are there tropical nights in Tarutung?

Yes: Tarutung has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Tarutung?

In Tarutung, between 1940 and 2025, the highest apparent temperature reached 36.8 °C on 17 March 2013, and the lowest was 11.0 °C on 4 January 1951.

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