Diadi climate — normals and trends

Q: What is the climate of Diadi?

Diadi has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 23.6 °C and it receives 3,062 mm of precipitation per year.

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

The hottest day measured in Diadi between 1940 and 2025 was 17 July 1952, reaching 37.1 °C.

Q: What is the coldest day in Diadi?

The coldest day measured in Diadi between 1940 and 2025 was 2 March 1963, at 10.5 °C.

Q: Does it snow in Diadi?

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

Q: Has the climate of Diadi warmed?

Yes: Diadi warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Diadi?

The wettest day measured in Diadi between 1940 and 2025 was 15 August 2006, with 360 mm of rain in 24 hours.

Q: What was the windiest day in Diadi?

The windiest day measured in Diadi between 1940 and 2025 was 9 November 2025, with winds reaching 52.7 km/h.

Q: What is the warmest month in Diadi?

The warmest month in Diadi is June (25.8 °C on average); the coldest is January (20.5 °C).

Q: How much does it rain in Diadi?

Diadi receives on average 3,062 mm of precipitation per year, spread over about 236 rainy days.

Q: Is it sunny in Diadi?

Diadi gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

Diadi (Philippines) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 23.6 °C and it receives 3,062 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 June (25.8 °C on average) and the coldest is January (20.5 °C). Rainfall peaks in August.

Diadi averages 0 frost days, 79 hot days (≥ 30 °C) and 236 rainy days per year.

Diadi has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.

The hottest day of the period reached 37.1 °C (on 17 July 1952) and the coldest 10.5 °C (on 2 March 1963).

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

DiadiCagayan Valley

coords: 16.73°, 121.36°
period: 1940–2025 · 86 yrs

AfTropical rainforestWarmest monthJuneColdest monthJanuaryWettest monthAugustDriest monthApril

Mean daily temperature

23.6°C

Average daily high

27.4°C

Average daily low

20.1°C

Annual rainfall

3,062mm

Sunshine / day

9.2h

Mean relative humidity

82%

Average peak wind

8.2km/h

Seasonal range

5.3°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

79 d/yr

Rainy days (≥ 1 mm)

236 d/yr

Annual snowfall

0.0 cm

Average feels-like high

31.9 °C

Average feels-like low

22.4 °C

Average peak gust

23.9 km/h

Tropical nights (≥ 20 °C)

210 d/yr

Solar radiation

16.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.7 °C

since 1940

+0.2 °C per decade · r² = 0.65 · 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

37.1 °C

17 July 1952

Coldest day

10.5 °C

2 March 1963

Wettest day

360 mm

15 August 2006

Windiest day

52.7 km/h

9 November 2025

Strongest gust

143.3 km/h

9 November 2025

Hottest feels-like

42.8 °C

28 May 1993

Coldest feels-like

9.3 °C

2 March 1963

Sunniest day

12.6 h

2 June 1957

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	33.5 °C1 June 2025	16.8 °C24 March 2025	24.5 °C	4,310 mm	97
2024	32.8 °C14 June 2024	14.9 °C31 January 2024	24.7 °C	3,758 mm	131
2023	34.7 °C5 August 2023	15.5 °C26 January 2023	24.5 °C	3,622 mm	119
2022	32.9 °C29 May 2022	14.9 °C18 January 2022	24.3 °C	3,082 mm	89
2021	35.2 °C18 June 2021	14.3 °C21 February 2021	24.5 °C	2,751 mm	101
2020	33.9 °C10 July 2020	13.0 °C4 February 2020	24.5 °C	3,025 mm	131
2019	34.3 °C16 August 2019	12.2 °C21 February 2019	24.4 °C	3,695 mm	104
2018	34.3 °C26 May 2018	15.5 °C29 October 2018	24.4 °C	3,207 mm	95
2017	33.9 °C17 June 2017	14.7 °C19 January 2017	24.2 °C	3,782 mm	99
2016	33.6 °C3 June 2016	16.6 °C8 February 2016	24.7 °C	3,433 mm	133
2015	33.7 °C30 June 2015	14.1 °C25 January 2015	23.9 °C	3,086 mm	106
2014	33.4 °C23 June 2014	12.6 °C25 January 2014	24.0 °C	3,054 mm	100
2013	33.8 °C6 April 2013	14.7 °C31 January 2013	24.1 °C	3,726 mm	83
2012	33.1 °C11 June 2012	15.9 °C1 December 2012	24.3 °C	3,524 mm	101
2011	33.7 °C19 July 2011	14.6 °C4 February 2011	23.8 °C	4,073 mm	69
2010	34.5 °C23 May 2010	13.4 °C31 January 2010	24.3 °C	3,306 mm	117
2009	33.8 °C10 August 2009	12.8 °C15 January 2009	23.9 °C	4,190 mm	86
2008	33.4 °C5 May 2008	15.3 °C31 January 2008	23.9 °C	3,092 mm	94
2007	32.7 °C7 June 2007	12.9 °C1 December 2007	24.1 °C	3,325 mm	113
2006	34.3 °C8 June 2006	14.8 °C18 January 2006	24.2 °C	3,828 mm	104
2005	33.9 °C22 May 2005	12.7 °C24 January 2005	24.0 °C	3,214 mm	104
2004	33.7 °C29 August 2004	13.8 °C17 February 2004	23.8 °C	2,995 mm	82
2003	32.8 °C20 July 2003	13.5 °C18 January 2003	23.7 °C	3,108 mm	80
2002	33.9 °C2 July 2002	12.3 °C5 January 2002	24.0 °C	2,801 mm	94
2001	33.6 °C14 June 2001	14.0 °C2 January 2001	24.0 °C	3,441 mm	77
2000	32.2 °C14 June 2000	14.6 °C30 January 2000	23.9 °C	3,795 mm	62
1999	32.8 °C9 May 1999	14.3 °C26 February 1999	23.8 °C	3,361 mm	71
1998	34.3 °C26 July 1998	11.9 °C4 January 1998	24.4 °C	3,496 mm	137
1997	33.0 °C15 August 1997	11.1 °C20 December 1997	23.4 °C	3,213 mm	66
1996	32.6 °C20 June 1996	12.0 °C5 January 1996	23.5 °C	2,682 mm	94
1995	33.3 °C9 May 1995	13.1 °C21 January 1995	23.7 °C	3,066 mm	80
1994	33.3 °C3 May 1994	14.3 °C20 January 1994	23.8 °C	3,133 mm	73
1993	35.0 °C28 May 1993	12.5 °C7 January 1993	23.8 °C	3,499 mm	92
1992	33.0 °C6 July 1992	11.3 °C27 February 1992	23.6 °C	3,312 mm	59
1991	35.1 °C5 July 1991	12.6 °C10 March 1991	23.8 °C	3,340 mm	73
1990	33.0 °C21 August 1990	13.8 °C22 January 1990	24.0 °C	2,997 mm	82
1989	32.6 °C29 May 1989	13.5 °C11 March 1989	23.7 °C	3,357 mm	92
1988	33.3 °C21 May 1988	11.1 °C14 December 1988	24.2 °C	3,078 mm	100
1987	34.2 °C23 June 1987	12.0 °C22 February 1987	23.9 °C	2,482 mm	101
1986	32.2 °C16 July 1986	13.3 °C17 January 1986	23.4 °C	3,458 mm	55
1985	32.3 °C27 May 1985	12.4 °C26 December 1985	23.4 °C	3,398 mm	40
1984	32.7 °C20 August 1984	14.5 °C22 February 1984	23.4 °C	3,874 mm	61
1983	35.7 °C29 June 1983	14.0 °C8 January 1983	23.8 °C	1,757 mm	101
1982	33.2 °C22 September 1982	14.1 °C3 February 1982	23.4 °C	3,328 mm	61
1981	32.7 °C27 August 1981	12.2 °C22 January 1981	23.3 °C	3,732 mm	58
1980	32.8 °C16 May 1980	11.8 °C25 December 1980	23.6 °C	2,514 mm	67
1979	34.3 °C18 July 1979	12.0 °C27 January 1979	23.5 °C	2,908 mm	88
1978	34.5 °C20 May 1978	10.6 °C24 January 1978	23.7 °C	4,351 mm	77
1977	35.7 °C17 May 1977	12.7 °C6 March 1977	23.6 °C	2,791 mm	113
1976	33.4 °C3 July 1976	12.9 °C8 February 1976	23.2 °C	3,663 mm	73
1975	35.2 °C16 May 1975	13.3 °C31 December 1975	23.8 °C	2,592 mm	123
1974	34.2 °C27 September 1974	10.7 °C15 January 1974	23.5 °C	2,996 mm	105
1973	35.1 °C5 June 1973	14.0 °C5 February 1973	23.8 °C	2,280 mm	116
1972	33.2 °C13 June 1972	11.4 °C6 March 1972	23.1 °C	2,978 mm	56
1971	32.6 °C5 August 1971	10.9 °C13 January 1971	23.0 °C	3,472 mm	68
1970	36.6 °C9 July 1970	13.5 °C2 February 1970	23.8 °C	2,262 mm	103
1969	36.3 °C22 May 1969	12.4 °C31 January 1969	24.0 °C	1,779 mm	129
1968	33.4 °C23 June 1968	11.7 °C19 January 1968	23.2 °C	1,480 mm	113
1967	34.8 °C30 May 1967	11.1 °C7 February 1967	23.2 °C	2,055 mm	114
1966	33.9 °C30 April 1966	12.2 °C13 January 1966	23.3 °C	1,794 mm	75
1965	31.7 °C5 August 1965	13.1 °C6 January 1965	22.5 °C	2,190 mm	22
1964	32.2 °C5 June 1964	13.1 °C7 February 1964	22.8 °C	2,842 mm	38
1963	33.7 °C23 May 1963	10.5 °C2 March 1963	23.0 °C	2,590 mm	71
1962	32.4 °C7 July 1962	12.1 °C11 February 1962	23.2 °C	1,824 mm	68
1961	36.2 °C11 June 1961	11.0 °C11 January 1961	23.5 °C	2,558 mm	72
1960	34.0 °C25 May 1960	14.3 °C23 January 1960	23.7 °C	2,101 mm	69
1959	33.4 °C19 June 1959	14.2 °C18 February 1959	23.7 °C	1,899 mm	103
1958	36.1 °C20 May 1958	13.5 °C9 December 1958	23.4 °C	2,935 mm	72
1957	32.9 °C14 May 1957	13.3 °C26 November 1957	23.4 °C	2,747 mm	72
1956	33.2 °C13 June 1956	14.2 °C7 January 1956	23.0 °C	3,079 mm	62
1955	35.7 °C24 May 1955	13.0 °C6 December 1955	23.5 °C	2,136 mm	110
1954	36.8 °C10 June 1954	13.6 °C4 March 1954	23.8 °C	2,002 mm	99
1953	32.6 °C28 May 1953	14.0 °C17 January 1953	23.6 °C	2,697 mm	63
1952	37.1 °C17 July 1952	13.0 °C4 January 1952	24.0 °C	2,074 mm	113
1951	33.7 °C21 August 1951	13.3 °C25 January 1951	23.5 °C	2,110 mm	63
1950	33.9 °C17 August 1950	13.9 °C18 January 1950	23.5 °C	2,354 mm	86
1949	33.4 °C21 May 1949	13.5 °C12 January 1949	23.5 °C	2,618 mm	83
1948	31.0 °C26 June 1948	12.4 °C4 January 1948	22.4 °C	3,468 mm	6
1947	30.9 °C15 June 1947	12.9 °C16 December 1947	22.6 °C	3,734 mm	4
1946	30.7 °C8 July 1946	14.7 °C2 March 1946	22.7 °C	3,467 mm	5
1945	31.2 °C6 June 1945	14.3 °C18 March 1945	22.5 °C	2,843 mm	5
1944	30.5 °C21 June 1944	11.7 °C5 March 1944	22.1 °C	5,205 mm	4
1943	30.2 °C22 June 1943	11.8 °C24 January 1943	21.6 °C	2,582 mm	2
1942	31.4 °C13 August 1942	12.1 °C7 December 1942	22.3 °C	3,084 mm	11
1941	30.3 °C15 June 1941	11.5 °C20 January 1941	22.5 °C	3,517 mm	3
1940	30.5 °C17 June 1940	12.6 °C16 January 1940	22.1 °C	4,958 mm	4

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

27.9 °C

+0.5 °C

Hot days (≥ 30 °C)

97 d/yr

+18

Frost days (< 0 °C)

0 d/yr

Annual rainfall

4310 mm

+1248 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	24.5 °C	+0.9 °C	360 mm	+166 mm
Feb	24.9 °C	+0.5 °C	302 mm	+136 mm
Mar	26.5 °C	+0.4 °C	281 mm	+140 mm
Apr	29.2 °C	+0.9 °C	184 mm	+54 mm
May	30.5 °C	+0.4 °C	121 mm	-170 mm
Jun	30.5 °C	+0.1 °C	239 mm	-21 mm
Jul	29.7 °C	-0.1 °C	901 mm	+545 mm
Aug	29.5 °C	+0.1 °C	254 mm	-215 mm
Sep	28.1 °C	-0.7 °C	643 mm	+237 mm
Oct	28.6 °C	+1.2 °C	290 mm	+50 mm
Nov	27.2 °C	+1.2 °C	429 mm	+233 mm
Dec	25.7 °C	+1.4 °C	306 mm	+93 mm

The year's extremes

Hottest day

33.5 °C

1 Jun 2025

Coldest day

16.8 °C

24 Mar 2025

Wettest day

157.5 mm

21 Jul 2025

Windiest day

52.7 km/h

9 Nov 2025

Strongest gust

143.3 km/h

9 Nov 2025

Hottest feels-like

40.6 °C

2 Aug 2025

Coldest feels-like

17.7 °C

24 Mar 2025

Sunniest day

12.3 h

26 May 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 Diadi?

Diadi has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 23.6 °C and it receives 3,062 mm of precipitation per year.

What is the hottest day ever recorded in Diadi?

The hottest day measured in Diadi between 1940 and 2025 was 17 July 1952, reaching 37.1 °C.

What is the coldest day in Diadi?

The coldest day measured in Diadi between 1940 and 2025 was 2 March 1963, at 10.5 °C.

Does it snow in Diadi?

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

Has the climate of Diadi warmed?

Yes: Diadi warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Diadi?

The wettest day measured in Diadi between 1940 and 2025 was 15 August 2006, with 360 mm of rain in 24 hours.

What was the windiest day in Diadi?

The windiest day measured in Diadi between 1940 and 2025 was 9 November 2025, with winds reaching 52.7 km/h.

What is the warmest month in Diadi?

The warmest month in Diadi is June (25.8 °C on average); the coldest is January (20.5 °C).

How much does it rain in Diadi?

Diadi receives on average 3,062 mm of precipitation per year, spread over about 236 rainy days.

Is it sunny in Diadi?

Diadi gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

Are there tropical nights in Diadi?

Yes: Diadi has on average 210 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Diadi?

In Diadi, between 1940 and 2025, the highest apparent temperature reached 42.8 °C on 28 May 1993, and the lowest was 9.3 °C on 2 March 1963.

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