Aileu climate — normals and trends

Q: What is the climate of Aileu?

Aileu has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.0 °C and it receives 1,875 mm of precipitation per year.

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

The hottest day measured in Aileu between 1940 and 2025 was 30 October 1968, reaching 33.3 °C.

Q: What is the coldest day in Aileu?

The coldest day measured in Aileu between 1940 and 2025 was 2 July 2001, at 11.3 °C.

Q: Does it snow in Aileu?

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

Q: Has the climate of Aileu warmed?

Yes: Aileu warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Aileu?

The wettest day measured in Aileu between 1940 and 2025 was 16 March 1942, with 155 mm of rain in 24 hours.

Q: What was the windiest day in Aileu?

The windiest day measured in Aileu between 1940 and 2025 was 15 August 1969, with winds reaching 21.8 km/h.

Q: What is the warmest month in Aileu?

The warmest month in Aileu is November (23.6 °C on average); the coldest is July (20.6 °C).

Q: How much does it rain in Aileu?

Aileu receives on average 1,875 mm of precipitation per year, spread over about 193 rainy days.

Q: Is it sunny in Aileu?

Aileu gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.

Aileu (Timor-Leste) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 22.0 °C and it receives 1,875 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 November (23.6 °C on average) and the coldest is July (20.6 °C). Rainfall peaks in February.

Aileu averages 0 frost days, 16 hot days (≥ 30 °C) and 193 rainy days per year.

Aileu has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.

The hottest day of the period reached 33.3 °C (on 30 October 1968) and the coldest 11.3 °C (on 2 July 2001).

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

AileuAileu

coords: -8.73°, 125.57°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthNovemberColdest monthJulyWettest monthFebruaryDriest monthAugust

Mean daily temperature

22.0°C

Average daily high

26.6°C

Average daily low

18.5°C

Annual rainfall

1,875mm

Sunshine / day

10.5h

Mean relative humidity

79%

Average peak wind

6.9km/h

Seasonal range

3.0°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

16 d/yr

Rainy days (≥ 1 mm)

193 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.9 °C

Average feels-like low

20.6 °C

Average peak gust

30.7 km/h

Tropical nights (≥ 20 °C)

63 d/yr

Solar radiation

19.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.3 °C

since 1940

+0.2 °C per decade · r² = 0.67 · 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

33.3 °C

30 October 1968

Coldest day

11.3 °C

2 July 2001

Wettest day

155 mm

16 March 1942

Windiest day

21.8 km/h

15 August 1969

Strongest gust

96.8 km/h

19 January 2006

Hottest feels-like

36.8 °C

19 November 2001

Coldest feels-like

10.2 °C

14 July 1994

Sunniest day

12.5 h

3 January 2024

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	31.6 °C1 November 2025	13.1 °C13 August 2025	22.7 °C	2,371 mm	29
2024	32.4 °C8 October 2024	13.4 °C13 July 2024	23.0 °C	2,338 mm	35
2023	32.1 °C19 October 2023	13.4 °C2 September 2023	22.7 °C	1,599 mm	54
2022	31.0 °C13 September 2022	13.5 °C24 July 2022	22.5 °C	2,355 mm	7
2021	32.7 °C20 October 2021	14.7 °C13 July 2021	22.8 °C	2,433 mm	41
2020	32.6 °C16 November 2020	13.4 °C24 July 2020	23.0 °C	1,749 mm	61
2019	33.1 °C20 October 2019	13.2 °C7 July 2019	22.6 °C	1,490 mm	55
2018	32.1 °C16 October 2018	13.7 °C14 July 2018	22.8 °C	1,710 mm	49
2017	31.4 °C10 October 2017	13.5 °C30 August 2017	22.7 °C	2,163 mm	44
2016	31.1 °C8 November 2016	13.7 °C19 August 2016	23.1 °C	2,100 mm	10
2015	30.7 °C29 October 2015	12.4 °C19 August 2015	22.3 °C	1,485 mm	7
2014	30.6 °C30 October 2014	12.0 °C2 September 2014	22.3 °C	1,705 mm	6
2013	31.6 °C11 October 2013	11.9 °C11 August 2013	22.5 °C	2,266 mm	27
2012	31.1 °C4 December 2012	12.9 °C23 June 2012	22.1 °C	1,771 mm	5
2011	31.1 °C11 October 2011	12.6 °C15 June 2011	22.1 °C	1,972 mm	5
2010	29.7 °C26 September 2010	14.9 °C15 August 2010	22.6 °C	2,475 mm	0
2009	30.9 °C13 November 2009	12.2 °C14 June 2009	22.3 °C	1,581 mm	13
2008	31.3 °C15 November 2008	12.8 °C29 July 2008	22.3 °C	2,094 mm	24
2007	31.5 °C18 November 2007	13.2 °C11 July 2007	22.3 °C	1,729 mm	18
2006	30.5 °C8 November 2006	12.7 °C29 July 2006	22.0 °C	2,022 mm	8
2005	30.9 °C30 October 2005	13.5 °C2 July 2005	22.5 °C	1,559 mm	8
2004	30.7 °C13 November 2004	12.8 °C22 August 2004	22.2 °C	1,731 mm	4
2003	31.2 °C29 November 2003	13.0 °C28 June 2003	22.3 °C	1,495 mm	3
2002	32.0 °C10 November 2002	12.3 °C17 August 2002	22.2 °C	1,442 mm	18
2001	31.2 °C5 November 2001	11.3 °C2 July 2001	22.0 °C	2,230 mm	9
2000	31.5 °C5 October 2000	13.0 °C21 July 2000	21.9 °C	2,342 mm	12
1999	31.4 °C26 October 1999	13.0 °C24 May 1999	21.8 °C	2,162 mm	7
1998	30.5 °C16 October 1998	15.2 °C3 September 1998	22.7 °C	2,360 mm	9
1997	30.2 °C28 October 1997	12.9 °C18 August 1997	21.9 °C	1,443 mm	1
1996	30.4 °C10 November 1996	14.4 °C17 July 1996	22.1 °C	1,915 mm	1
1995	31.4 °C28 October 1995	12.6 °C27 July 1995	22.0 °C	2,049 mm	4
1994	30.6 °C22 October 1994	12.0 °C14 July 1994	22.0 °C	1,738 mm	2
1993	29.4 °C25 October 1993	14.1 °C7 July 1993	22.3 °C	1,627 mm	0
1992	30.8 °C4 October 1992	14.1 °C7 August 1992	22.1 °C	1,741 mm	5
1991	30.9 °C11 October 1991	12.0 °C18 July 1991	21.9 °C	1,360 mm	6
1990	32.8 °C11 October 1990	12.9 °C4 August 1990	22.3 °C	1,744 mm	43
1989	31.3 °C15 October 1989	14.3 °C11 August 1989	22.3 °C	1,827 mm	11
1988	31.4 °C3 October 1988	13.7 °C20 June 1988	22.6 °C	2,086 mm	12
1987	31.3 °C11 October 1987	15.3 °C10 August 1987	22.3 °C	1,484 mm	9
1986	30.0 °C5 November 1986	14.0 °C12 September 1986	22.0 °C	2,245 mm	2
1985	30.0 °C28 September 1985	13.3 °C14 July 1985	22.1 °C	1,781 mm	2
1984	31.1 °C15 October 1984	13.2 °C6 July 1984	22.2 °C	2,072 mm	8
1983	31.4 °C10 November 1983	14.0 °C25 June 1983	22.3 °C	2,067 mm	4
1982	30.0 °C19 October 1982	13.1 °C8 July 1982	21.7 °C	1,422 mm	1
1981	31.2 °C25 October 1981	14.0 °C29 August 1981	22.2 °C	1,970 mm	9
1980	30.5 °C9 October 1980	14.5 °C23 June 1980	22.2 °C	1,792 mm	4
1979	31.5 °C22 October 1979	14.8 °C16 August 1979	22.4 °C	1,251 mm	21
1978	30.5 °C17 October 1978	13.8 °C17 July 1978	21.9 °C	2,406 mm	5
1977	31.8 °C20 October 1977	12.0 °C30 July 1977	21.7 °C	1,600 mm	26
1976	31.8 °C12 October 1976	13.7 °C22 May 1976	21.7 °C	1,616 mm	16
1975	30.4 °C18 October 1975	14.4 °C8 July 1975	21.7 °C	2,664 mm	4
1974	30.5 °C20 September 1974	13.7 °C2 June 1974	21.6 °C	1,918 mm	1
1973	31.5 °C18 October 1973	14.4 °C13 August 1973	22.2 °C	1,988 mm	26
1972	31.8 °C25 October 1972	14.0 °C12 August 1972	21.8 °C	1,217 mm	22
1971	32.9 °C4 September 1971	13.1 °C13 June 1971	21.6 °C	2,145 mm	16
1970	31.2 °C10 October 1970	14.0 °C26 July 1970	22.0 °C	2,037 mm	6
1969	32.6 °C3 November 1969	14.4 °C22 May 1969	22.2 °C	1,458 mm	44
1968	33.3 °C30 October 1968	12.8 °C1 August 1968	21.7 °C	1,986 mm	19
1967	30.8 °C21 October 1967	13.2 °C18 August 1967	21.5 °C	1,749 mm	7
1966	31.0 °C25 September 1966	12.4 °C22 July 1966	21.7 °C	1,763 mm	17
1965	31.0 °C1 December 1965	11.8 °C22 July 1965	21.7 °C	1,809 mm	15
1964	30.2 °C20 September 1964	12.9 °C7 August 1964	21.5 °C	2,129 mm	1
1963	30.7 °C28 October 1963	13.0 °C25 June 1963	21.5 °C	2,017 mm	4
1962	30.8 °C20 October 1962	14.2 °C30 August 1962	21.9 °C	1,796 mm	9
1961	30.8 °C14 October 1961	14.0 °C16 July 1961	21.6 °C	1,761 mm	9
1960	32.1 °C9 October 1960	13.6 °C30 May 1960	21.5 °C	2,290 mm	27
1959	32.1 °C24 October 1959	12.8 °C24 July 1959	21.6 °C	2,120 mm	26
1958	31.9 °C26 October 1958	13.6 °C8 September 1958	22.2 °C	1,848 mm	29
1957	32.3 °C20 October 1957	12.8 °C19 August 1957	21.8 °C	1,839 mm	22
1956	30.0 °C23 October 1956	13.5 °C18 September 1956	21.4 °C	2,034 mm	2
1955	32.0 °C3 October 1955	13.7 °C18 August 1955	21.5 °C	2,116 mm	20
1954	31.0 °C6 November 1954	13.3 °C10 September 1954	21.5 °C	2,086 mm	8
1953	32.6 °C20 October 1953	13.2 °C15 July 1953	22.1 °C	1,204 mm	32
1952	33.1 °C27 October 1952	13.6 °C13 June 1952	21.9 °C	1,932 mm	25
1951	32.6 °C17 November 1951	14.0 °C22 July 1951	22.1 °C	1,179 mm	46
1950	30.5 °C12 October 1950	14.0 °C13 July 1950	21.2 °C	2,353 mm	2
1949	30.4 °C30 October 1949	12.9 °C24 July 1949	21.2 °C	2,262 mm	2
1948	32.0 °C6 October 1948	13.7 °C18 June 1948	21.8 °C	1,422 mm	41
1947	32.2 °C20 October 1947	13.9 °C16 July 1947	22.0 °C	1,416 mm	21
1946	31.5 °C25 October 1946	12.3 °C23 July 1946	21.4 °C	1,385 mm	27
1945	29.5 °C5 December 1945	13.4 °C17 July 1945	21.2 °C	2,327 mm	0
1944	31.5 °C29 October 1944	13.6 °C10 July 1944	21.2 °C	1,943 mm	14
1943	31.5 °C27 October 1943	12.7 °C24 July 1943	21.1 °C	1,863 mm	38
1942	30.2 °C4 November 1942	13.5 °C10 August 1942	21.3 °C	2,090 mm	3
1941	31.4 °C31 October 1941	12.9 °C10 August 1941	21.4 °C	1,746 mm	30
1940	30.8 °C12 October 1940	13.2 °C21 July 1940	21.4 °C	1,386 mm	17

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

27.2 °C

+0.6 °C

Hot days (≥ 30 °C)

29 d/yr

+13

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2371 mm

+496 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	26.2 °C	+0.8 °C	485 mm	+152 mm
Feb	26.1 °C	+1.0 °C	420 mm	+84 mm
Mar	26.6 °C	+1.0 °C	291 mm	-21 mm
Apr	26.4 °C	+0.2 °C	188 mm	+18 mm
May	26.2 °C	+0.1 °C	151 mm	+62 mm
Jun	25.5 °C	-0.1 °C	51 mm	+0 mm
Jul	26.8 °C	+1.0 °C	18 mm	-14 mm
Aug	28.3 °C	+1.5 °C	1 mm	-14 mm
Sep	29.6 °C	+1.3 °C	19 mm	+0 mm
Oct	29.6 °C	+0.5 °C	59 mm	+12 mm
Nov	28.0 °C	-0.3 °C	241 mm	+89 mm
Dec	26.5 °C	+0.1 °C	448 mm	+127 mm

The year's extremes

Hottest day

31.6 °C

1 Nov 2025

Coldest day

13.1 °C

13 Aug 2025

Wettest day

51.0 mm

7 Feb 2025

Windiest day

14.4 km/h

9 Feb 2025

Strongest gust

64.4 km/h

10 Feb 2025

Hottest feels-like

35.7 °C

25 Oct 2025

Coldest feels-like

11.4 °C

13 Aug 2025

Sunniest day

12.4 h

19 Dec 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 Aileu?

Aileu has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.0 °C and it receives 1,875 mm of precipitation per year.

What is the hottest day ever recorded in Aileu?

The hottest day measured in Aileu between 1940 and 2025 was 30 October 1968, reaching 33.3 °C.

What is the coldest day in Aileu?

The coldest day measured in Aileu between 1940 and 2025 was 2 July 2001, at 11.3 °C.

Does it snow in Aileu?

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

Has the climate of Aileu warmed?

Yes: Aileu warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Aileu?

The wettest day measured in Aileu between 1940 and 2025 was 16 March 1942, with 155 mm of rain in 24 hours.

What was the windiest day in Aileu?

The windiest day measured in Aileu between 1940 and 2025 was 15 August 1969, with winds reaching 21.8 km/h.

What is the warmest month in Aileu?

The warmest month in Aileu is November (23.6 °C on average); the coldest is July (20.6 °C).

How much does it rain in Aileu?

Aileu receives on average 1,875 mm of precipitation per year, spread over about 193 rainy days.

Is it sunny in Aileu?

Aileu gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.

Are there tropical nights in Aileu?

Yes: Aileu has on average 63 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Aileu?

In Aileu, between 1940 and 2025, the highest apparent temperature reached 36.8 °C on 19 November 2001, and the lowest was 10.2 °C on 14 July 1994.

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