Bay climate — normals and trends

Q: What is the climate of Bay?

Bay has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.0 °C and it receives 1,884 mm of precipitation per year.

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

The hottest day measured in Bay between 1940 and 2025 was 17 May 1997, reaching 34.6 °C.

Q: What is the coldest day in Bay?

The coldest day measured in Bay between 1940 and 2025 was 26 January 2014, at 19.2 °C.

Q: Does it snow in Bay?

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

Q: Has the climate of Bay warmed?

Yes: Bay warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Bay?

The wettest day measured in Bay between 1940 and 2025 was 28 October 2000, with 277 mm of rain in 24 hours.

Q: What was the windiest day in Bay?

The windiest day measured in Bay between 1940 and 2025 was 4 November 1967, with winds reaching 63.8 km/h.

Q: What is the warmest month in Bay?

The warmest month in Bay is May (27.6 °C on average); the coldest is January (24.3 °C).

Q: How much does it rain in Bay?

Bay receives on average 1,884 mm of precipitation per year, spread over about 192 rainy days.

Q: Is it sunny in Bay?

Bay gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.

Bay (Philippines) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.0 °C and it receives 1,884 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 (27.6 °C on average) and the coldest is January (24.3 °C). Rainfall peaks in July.

Bay averages 0 frost days, 101 hot days (≥ 30 °C) and 192 rainy days per year.

Bay has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.

The hottest day of the period reached 34.6 °C (on 17 May 1997) and the coldest 19.2 °C (on 26 January 2014).

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

BayCalabarzon

coords: 14.18°, 121.29°
period: 1940–2025 · 86 yrs

AmTropical monsoonWarmest monthMayColdest monthJanuaryWettest monthJulyDriest monthFebruary

Mean daily temperature

26.0°C

Average daily high

28.7°C

Average daily low

24.1°C

Annual rainfall

1,884mm

Sunshine / day

10.3h

Mean relative humidity

83%

Average peak wind

15.5km/h

Seasonal range

3.3°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

101 d/yr

Rainy days (≥ 1 mm)

192 d/yr

Annual snowfall

0.0 cm

Average feels-like high

33.3 °C

Average feels-like low

28.1 °C

Average peak gust

33.9 km/h

Tropical nights (≥ 20 °C)

365 d/yr

Solar radiation

18.2 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.5 °C

since 1940

+0.2 °C per decade · r² = 0.74 · 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

34.6 °C

17 May 1997

Coldest day

19.2 °C

26 January 2014

Wettest day

277 mm

28 October 2000

Windiest day

63.8 km/h

4 November 1967

Strongest gust

142.2 km/h

21 November 1942

Hottest feels-like

42.6 °C

11 June 1995

Coldest feels-like

17.9 °C

10 January 1971

Sunniest day

12.3 h

12 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	33.8 °C23 April 2025	23.1 °C28 January 2025	26.9 °C	2,689 mm	146
2024	33.9 °C30 April 2024	22.5 °C27 January 2024	27.2 °C	2,475 mm	175
2023	33.0 °C21 April 2023	22.3 °C20 February 2023	26.9 °C	1,995 mm	155
2022	33.1 °C10 June 2022	22.3 °C18 January 2022	26.8 °C	2,432 mm	146
2021	33.9 °C31 May 2021	22.2 °C20 February 2021	26.8 °C	1,838 mm	137
2020	34.0 °C10 May 2020	22.1 °C31 January 2020	27.1 °C	2,367 mm	183
2019	34.3 °C16 May 2019	21.9 °C7 February 2019	26.9 °C	1,686 mm	152
2018	33.4 °C8 May 2018	21.3 °C9 February 2018	26.7 °C	2,116 mm	110
2017	32.9 °C30 May 2017	22.0 °C13 February 2017	26.7 °C	2,194 mm	136
2016	32.9 °C15 June 2016	22.2 °C18 January 2016	27.0 °C	2,328 mm	149
2015	33.7 °C6 May 2015	20.4 °C18 January 2015	26.6 °C	1,653 mm	143
2014	34.1 °C18 May 2014	19.2 °C26 January 2014	26.5 °C	1,889 mm	128
2013	34.3 °C7 April 2013	22.3 °C25 January 2013	26.6 °C	2,193 mm	143
2012	32.9 °C9 May 2012	22.5 °C4 February 2012	26.5 °C	2,317 mm	102
2011	33.0 °C18 May 2011	22.1 °C17 January 2011	26.2 °C	2,084 mm	80
2010	34.1 °C22 May 2010	22.4 °C14 January 2010	26.8 °C	1,819 mm	160
2009	32.6 °C24 March 2009	21.2 °C15 January 2009	26.2 °C	2,606 mm	93
2008	32.5 °C4 June 2008	22.2 °C17 December 2008	26.3 °C	2,170 mm	123
2007	33.2 °C19 April 2007	21.5 °C30 January 2007	26.6 °C	1,693 mm	136
2006	32.3 °C7 May 2006	22.5 °C12 January 2006	26.6 °C	2,064 mm	130
2005	34.3 °C11 May 2005	21.2 °C16 January 2005	26.4 °C	2,014 mm	143
2004	32.8 °C13 April 2004	22.2 °C26 January 2004	26.3 °C	1,468 mm	120
2003	33.4 °C17 May 2003	21.6 °C27 January 2003	26.3 °C	1,318 mm	129
2002	32.7 °C11 June 2002	21.2 °C3 February 2002	26.3 °C	1,774 mm	132
2001	32.5 °C19 May 2001	21.4 °C29 December 2001	26.3 °C	1,950 mm	94
2000	32.8 °C2 May 2000	21.3 °C30 January 2000	26.2 °C	2,884 mm	86
1999	32.3 °C25 April 1999	21.2 °C19 February 1999	26.2 °C	2,123 mm	95
1998	33.1 °C21 May 1998	22.2 °C12 January 1998	26.9 °C	1,789 mm	186
1997	34.6 °C17 May 1997	20.8 °C2 January 1997	26.2 °C	1,303 mm	120
1996	32.7 °C6 May 1996	20.2 °C30 December 1996	26.1 °C	2,034 mm	119
1995	33.4 °C11 June 1995	20.4 °C31 December 1995	26.2 °C	2,608 mm	111
1994	32.3 °C2 May 1994	21.7 °C20 February 1994	26.3 °C	1,854 mm	83
1993	33.7 °C30 May 1993	20.2 °C29 January 1993	26.3 °C	1,617 mm	93
1992	33.1 °C20 April 1992	20.1 °C16 January 1992	26.2 °C	1,536 mm	107
1991	32.9 °C16 May 1991	21.7 °C27 January 1991	26.1 °C	1,642 mm	84
1990	33.5 °C23 April 1990	21.6 °C19 January 1990	26.3 °C	2,096 mm	101
1989	32.0 °C21 April 1989	20.2 °C29 January 1989	26.1 °C	1,665 mm	92
1988	32.8 °C1 September 1988	21.0 °C14 December 1988	26.6 °C	2,131 mm	126
1987	32.9 °C13 May 1987	20.3 °C5 February 1987	26.4 °C	1,691 mm	133
1986	32.4 °C8 May 1986	20.8 °C26 January 1986	26.0 °C	1,931 mm	73
1985	33.6 °C28 May 1985	20.6 °C27 December 1985	26.0 °C	1,845 mm	63
1984	32.0 °C13 April 1984	21.7 °C4 January 1984	25.9 °C	2,230 mm	83
1983	33.5 °C2 June 1983	20.9 °C11 February 1983	26.3 °C	1,725 mm	145
1982	32.9 °C4 June 1982	20.2 °C4 February 1982	25.8 °C	1,803 mm	69
1981	32.7 °C17 May 1981	19.8 °C18 January 1981	25.9 °C	1,896 mm	96
1980	31.9 °C8 May 1980	21.3 °C30 December 1980	26.1 °C	1,671 mm	100
1979	32.6 °C7 April 1979	20.2 °C12 January 1979	26.1 °C	2,082 mm	135
1978	34.4 °C20 May 1978	21.0 °C29 January 1978	26.1 °C	2,356 mm	103
1977	32.5 °C16 May 1977	20.6 °C6 March 1977	26.0 °C	1,812 mm	108
1976	32.4 °C18 April 1976	19.6 °C4 February 1976	25.6 °C	2,395 mm	87
1975	33.2 °C21 May 1975	20.6 °C22 January 1975	26.0 °C	2,014 mm	117
1974	32.6 °C9 May 1974	19.7 °C15 January 1974	25.8 °C	2,130 mm	100
1973	33.2 °C20 May 1973	20.6 °C26 December 1973	26.2 °C	1,588 mm	132
1972	32.7 °C30 April 1972	20.2 °C2 March 1972	25.7 °C	2,072 mm	79
1971	32.8 °C16 April 1971	19.3 °C10 January 1971	25.5 °C	1,829 mm	61
1970	33.8 °C4 June 1970	20.7 °C21 January 1970	26.1 °C	1,736 mm	121
1969	34.1 °C28 May 1969	19.9 °C7 February 1969	26.2 °C	1,461 mm	145
1968	33.8 °C30 May 1968	19.4 °C19 January 1968	25.9 °C	615 mm	123
1967	33.1 °C29 May 1967	19.6 °C17 January 1967	25.5 °C	1,054 mm	87
1966	34.5 °C15 April 1966	21.7 °C6 February 1966	25.8 °C	1,291 mm	65
1965	31.6 °C19 April 1965	19.9 °C22 January 1965	25.3 °C	1,093 mm	41
1964	32.0 °C5 May 1964	21.5 °C30 January 1964	25.5 °C	1,882 mm	43
1963	32.1 °C11 August 1963	19.9 °C28 February 1963	25.4 °C	1,204 mm	64
1962	32.8 °C21 May 1962	20.1 °C3 February 1962	25.8 °C	1,150 mm	100
1961	32.5 °C21 April 1961	19.9 °C18 January 1961	25.8 °C	1,589 mm	78
1960	32.1 °C19 May 1960	20.6 °C17 December 1960	26.1 °C	1,646 mm	81
1959	33.4 °C12 June 1959	21.1 °C21 January 1959	26.0 °C	1,368 mm	100
1958	33.0 °C20 May 1958	20.6 °C22 February 1958	26.0 °C	1,551 mm	97
1957	34.1 °C14 May 1957	20.8 °C13 February 1957	26.0 °C	1,626 mm	103
1956	32.2 °C24 July 1956	20.6 °C9 January 1956	25.5 °C	2,169 mm	60
1955	33.3 °C11 May 1955	20.2 °C20 December 1955	25.8 °C	1,737 mm	108
1954	32.9 °C10 June 1954	21.6 °C27 January 1954	26.0 °C	1,883 mm	114
1953	33.1 °C16 April 1953	20.8 °C7 January 1953	26.1 °C	1,488 mm	113
1952	33.0 °C6 June 1952	21.2 °C11 December 1952	26.0 °C	2,089 mm	105
1951	32.3 °C2 May 1951	20.7 °C8 February 1951	25.9 °C	1,227 mm	100
1950	32.5 °C9 June 1950	21.1 °C21 December 1950	25.8 °C	1,490 mm	82
1949	32.5 °C30 May 1949	20.4 °C19 January 1949	25.8 °C	1,932 mm	86
1948	31.8 °C16 June 1948	20.3 °C18 January 1948	25.4 °C	2,082 mm	67
1947	32.3 °C11 June 1947	20.9 °C6 February 1947	25.6 °C	1,977 mm	52
1946	31.5 °C14 May 1946	21.2 °C3 February 1946	25.3 °C	2,072 mm	34
1945	32.6 °C27 April 1945	21.7 °C28 March 1945	25.4 °C	2,001 mm	25
1944	31.3 °C1 May 1944	20.1 °C9 January 1944	24.8 °C	2,793 mm	14
1943	30.8 °C29 April 1943	20.1 °C23 January 1943	24.5 °C	1,630 mm	7
1942	31.1 °C20 April 1942	20.2 °C7 December 1942	25.2 °C	2,166 mm	27
1941	31.3 °C24 April 1941	20.5 °C5 February 1941	25.2 °C	2,190 mm	12
1940	31.4 °C8 May 1940	20.2 °C25 January 1940	24.9 °C	2,368 mm	28

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

29.4 °C

+0.7 °C

Hot days (≥ 30 °C)

146 d/yr

+45

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2689 mm

+805 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	27.3 °C	+0.9 °C	133 mm	+97 mm
Feb	27.7 °C	+0.7 °C	103 mm	+79 mm
Mar	28.7 °C	+0.4 °C	34 mm	+7 mm
Apr	31.8 °C	+1.7 °C	13 mm	-20 mm
May	31.7 °C	+0.9 °C	135 mm	-17 mm
Jun	30.5 °C	+0.3 °C	394 mm	+140 mm
Jul	29.0 °C	-0.3 °C	419 mm	+92 mm
Aug	30.1 °C	+1.1 °C	441 mm	+144 mm
Sep	28.9 °C	-0.2 °C	362 mm	+64 mm
Oct	29.6 °C	+0.8 °C	276 mm	+70 mm
Nov	29.1 °C	+1.1 °C	252 mm	+136 mm
Dec	28.2 °C	+1.3 °C	127 mm	+14 mm

The year's extremes

Hottest day

33.8 °C

23 Apr 2025

Coldest day

23.1 °C

28 Jan 2025

Wettest day

72.4 mm

9 Nov 2025

Windiest day

42.5 km/h

9 Nov 2025

Strongest gust

91.4 km/h

9 Nov 2025

Hottest feels-like

41.5 °C

23 Apr 2025

Coldest feels-like

23.8 °C

9 Nov 2025

Sunniest day

12.2 h

3 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 Bay?

Bay has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.0 °C and it receives 1,884 mm of precipitation per year.

What is the hottest day ever recorded in Bay?

The hottest day measured in Bay between 1940 and 2025 was 17 May 1997, reaching 34.6 °C.

What is the coldest day in Bay?

The coldest day measured in Bay between 1940 and 2025 was 26 January 2014, at 19.2 °C.

Does it snow in Bay?

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

Has the climate of Bay warmed?

Yes: Bay warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Bay?

The wettest day measured in Bay between 1940 and 2025 was 28 October 2000, with 277 mm of rain in 24 hours.

What was the windiest day in Bay?

The windiest day measured in Bay between 1940 and 2025 was 4 November 1967, with winds reaching 63.8 km/h.

What is the warmest month in Bay?

The warmest month in Bay is May (27.6 °C on average); the coldest is January (24.3 °C).

How much does it rain in Bay?

Bay receives on average 1,884 mm of precipitation per year, spread over about 192 rainy days.

Is it sunny in Bay?

Bay gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.

Are there tropical nights in Bay?

Yes: Bay has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Bay?

In Bay, between 1940 and 2025, the highest apparent temperature reached 42.6 °C on 11 June 1995, and the lowest was 17.9 °C on 10 January 1971.

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