Bulan climate — normals and trends

Q: What is the climate of Bulan?

Bulan has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.6 °C and it receives 2,044 mm of precipitation per year.

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

The hottest day measured in Bulan between 1940 and 2025 was 25 May 2010, reaching 34.2 °C.

Q: What is the coldest day in Bulan?

The coldest day measured in Bulan between 1940 and 2025 was 5 April 1963, at 20.0 °C.

Q: Does it snow in Bulan?

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

Q: Has the climate of Bulan warmed?

Yes: Bulan warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Bulan?

The wettest day measured in Bulan between 1940 and 2025 was 5 May 1951, with 269 mm of rain in 24 hours.

Q: What was the windiest day in Bulan?

The windiest day measured in Bulan between 1940 and 2025 was 20 November 1942, with winds reaching 82.0 km/h.

Q: What is the warmest month in Bulan?

The warmest month in Bulan is May (27.7 °C on average); the coldest is January (25.2 °C).

Q: How much does it rain in Bulan?

Bulan receives on average 2,044 mm of precipitation per year, spread over about 272 rainy days.

Q: Is it sunny in Bulan?

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

Bulan (Philippines) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 26.6 °C and it receives 2,044 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 (27.7 °C on average) and the coldest is January (25.2 °C). Rainfall peaks in July.

Bulan averages 0 frost days, 104 hot days (≥ 30 °C) and 272 rainy days per year.

Bulan has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.

The hottest day of the period reached 34.2 °C (on 25 May 2010) and the coldest 20.0 °C (on 5 April 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

BulanBicol Region

coords: 12.67°, 123.88°
period: 1940–2025 · 86 yrs

AfTropical rainforestWarmest monthMayColdest monthJanuaryWettest monthJulyDriest monthApril

Mean daily temperature

26.6°C

Average daily high

28.9°C

Average daily low

24.6°C

Annual rainfall

2,044mm

Sunshine / day

10.3h

Mean relative humidity

85%

Average peak wind

17.6km/h

Seasonal range

2.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

104 d/yr

Rainy days (≥ 1 mm)

272 d/yr

Annual snowfall

0.0 cm

Average feels-like high

34.0 °C

Average feels-like low

28.1 °C

Average peak gust

41.4 km/h

Tropical nights (≥ 20 °C)

365 d/yr

Solar radiation

18.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.8 °C

since 1940

+0.2 °C per decade · r² = 0.79 · 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

34.2 °C

25 May 2010

Coldest day

20.0 °C

5 April 1963

Wettest day

269 mm

5 May 1951

Windiest day

82.0 km/h

20 November 1942

Strongest gust

199.8 km/h

21 October 1952

Hottest feels-like

43.1 °C

3 September 2020

Coldest feels-like

16.2 °C

20 November 1942

Sunniest day

12.6 h

3 June 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	32.7 °C3 June 2025	23.4 °C1 February 2025	27.4 °C	3,513 mm	164
2024	34.0 °C23 May 2024	23.2 °C8 February 2024	27.7 °C	2,701 mm	229
2023	32.4 °C19 May 2023	22.8 °C17 February 2023	27.5 °C	2,687 mm	188
2022	32.5 °C16 June 2022	23.2 °C22 February 2022	27.2 °C	2,929 mm	168
2021	32.3 °C7 August 2021	23.1 °C10 February 2021	27.3 °C	2,710 mm	163
2020	32.9 °C3 September 2020	23.3 °C19 February 2020	27.5 °C	2,678 mm	182
2019	33.1 °C16 May 2019	21.9 °C26 February 2019	27.4 °C	1,980 mm	190
2018	32.3 °C16 May 2018	22.2 °C10 February 2018	27.2 °C	2,634 mm	151
2017	32.6 °C1 June 2017	23.2 °C15 February 2017	27.1 °C	2,777 mm	159
2016	33.1 °C14 May 2016	22.8 °C17 January 2016	27.4 °C	2,055 mm	175
2015	32.9 °C30 May 2015	22.3 °C10 March 2015	27.1 °C	1,582 mm	158
2014	32.9 °C20 May 2014	21.4 °C26 January 2014	27.0 °C	2,630 mm	138
2013	32.7 °C1 May 2013	23.1 °C21 January 2013	27.2 °C	2,524 mm	155
2012	32.6 °C21 June 2012	23.3 °C24 February 2012	27.2 °C	2,270 mm	139
2011	31.7 °C21 May 2011	23.0 °C19 January 2011	26.9 °C	3,304 mm	110
2010	34.2 °C25 May 2010	23.2 °C8 February 2010	27.3 °C	1,955 mm	189
2009	32.3 °C16 April 2009	23.2 °C14 January 2009	27.1 °C	2,081 mm	142
2008	32.4 °C3 June 2008	23.1 °C15 February 2008	26.9 °C	2,612 mm	134
2007	33.1 °C16 May 2007	23.2 °C6 March 2007	27.1 °C	1,876 mm	157
2006	32.9 °C10 June 2006	23.3 °C26 February 2006	27.2 °C	2,307 mm	171
2005	33.1 °C18 June 2005	22.0 °C17 January 2005	27.0 °C	1,815 mm	163
2004	32.4 °C28 August 2004	21.5 °C24 October 2004	26.9 °C	2,125 mm	158
2003	32.9 °C7 June 2003	22.5 °C12 March 2003	27.0 °C	1,737 mm	162
2002	33.2 °C11 June 2002	22.7 °C3 February 2002	27.1 °C	1,518 mm	172
2001	32.2 °C19 May 2001	23.0 °C25 March 2001	27.0 °C	2,290 mm	146
2000	32.2 °C2 May 2000	22.6 °C1 February 2000	26.9 °C	2,838 mm	123
1999	32.5 °C7 June 1999	22.6 °C24 December 1999	26.7 °C	2,594 mm	125
1998	33.6 °C21 July 1998	21.9 °C15 January 1998	27.4 °C	1,527 mm	240
1997	32.4 °C1 May 1997	21.1 °C14 March 1997	26.6 °C	1,373 mm	128
1996	32.4 °C2 October 1996	21.5 °C14 February 1996	26.6 °C	2,342 mm	127
1995	32.4 °C23 June 1995	22.1 °C5 February 1995	26.7 °C	2,393 mm	123
1994	32.3 °C1 May 1994	21.5 °C21 February 1994	26.9 °C	2,042 mm	103
1993	33.0 °C3 June 1993	20.3 °C18 March 1993	26.7 °C	1,638 mm	107
1992	32.3 °C19 April 1992	21.1 °C17 January 1992	26.5 °C	1,406 mm	113
1991	32.2 °C25 June 1991	22.1 °C27 January 1991	26.6 °C	1,574 mm	104
1990	32.3 °C19 April 1990	22.0 °C5 March 1990	26.7 °C	1,746 mm	109
1989	32.1 °C12 May 1989	22.4 °C4 December 1989	26.6 °C	2,014 mm	92
1988	32.0 °C22 April 1988	22.9 °C17 December 1988	27.0 °C	2,016 mm	131
1987	33.6 °C3 June 1987	21.6 °C6 February 1987	26.9 °C	1,844 mm	142
1986	32.7 °C4 June 1986	21.8 °C4 February 1986	26.6 °C	1,816 mm	94
1985	31.6 °C11 April 1985	22.1 °C17 December 1985	26.5 °C	1,787 mm	69
1984	32.1 °C10 May 1984	22.9 °C25 January 1984	26.5 °C	2,033 mm	73
1983	33.4 °C7 June 1983	20.7 °C12 February 1983	26.8 °C	1,511 mm	144
1982	31.7 °C30 April 1982	22.0 °C20 January 1982	26.4 °C	2,073 mm	81
1981	32.4 °C22 May 1981	21.9 °C20 March 1981	26.6 °C	2,014 mm	109
1980	32.1 °C14 May 1980	22.0 °C10 January 1980	26.6 °C	1,891 mm	83
1979	32.2 °C4 September 1979	21.5 °C12 January 1979	26.6 °C	1,847 mm	114
1978	32.1 °C31 July 1978	21.6 °C6 February 1978	26.6 °C	2,248 mm	86
1977	33.1 °C4 June 1977	22.1 °C10 February 1977	26.6 °C	1,907 mm	91
1976	31.2 °C4 May 1976	20.6 °C4 February 1976	26.2 °C	2,432 mm	48
1975	31.7 °C28 May 1975	21.9 °C13 February 1975	26.4 °C	1,948 mm	89
1974	32.1 °C3 June 1974	21.4 °C12 January 1974	26.4 °C	2,016 mm	94
1973	33.2 °C19 May 1973	20.2 °C25 January 1973	26.6 °C	1,703 mm	119
1972	33.0 °C19 June 1972	20.8 °C2 March 1972	26.3 °C	1,643 mm	75
1971	31.2 °C6 August 1971	20.9 °C13 January 1971	26.1 °C	1,688 mm	34
1970	33.8 °C2 June 1970	22.6 °C6 January 1970	26.7 °C	1,683 mm	122
1969	33.0 °C30 May 1969	21.7 °C8 February 1969	26.7 °C	1,239 mm	145
1968	33.2 °C4 June 1968	21.0 °C21 February 1968	26.4 °C	1,305 mm	104
1967	32.4 °C6 June 1967	21.8 °C20 March 1967	26.2 °C	1,613 mm	84
1966	31.8 °C6 May 1966	22.2 °C21 January 1966	25.9 °C	1,481 mm	17
1965	30.1 °C10 May 1965	21.1 °C25 January 1965	25.3 °C	1,965 mm	1
1964	30.6 °C27 May 1964	22.1 °C31 December 1964	25.7 °C	1,746 mm	5
1963	32.3 °C11 June 1963	20.0 °C5 April 1963	26.0 °C	1,205 mm	72
1962	31.3 °C26 June 1962	21.5 °C4 February 1962	26.2 °C	1,555 mm	85
1961	32.2 °C10 May 1961	21.2 °C19 January 1961	26.4 °C	1,537 mm	86
1960	32.0 °C23 August 1960	21.6 °C19 December 1960	26.6 °C	1,547 mm	110
1959	32.6 °C7 June 1959	22.1 °C18 January 1959	26.4 °C	1,628 mm	94
1958	31.9 °C30 May 1958	21.5 °C9 February 1958	26.3 °C	2,088 mm	85
1957	32.9 °C16 May 1957	21.8 °C7 February 1957	26.3 °C	1,759 mm	69
1956	30.7 °C24 June 1956	21.6 °C2 January 1956	25.9 °C	2,522 mm	27
1955	32.1 °C23 July 1955	21.8 °C21 December 1955	26.2 °C	1,942 mm	97
1954	32.7 °C7 August 1954	21.7 °C6 February 1954	26.4 °C	2,213 mm	107
1953	33.4 °C15 May 1953	21.8 °C7 January 1953	26.5 °C	1,625 mm	82
1952	32.5 °C24 May 1952	22.2 °C18 February 1952	26.4 °C	2,156 mm	80
1951	32.0 °C8 June 1951	22.3 °C6 February 1951	26.3 °C	2,059 mm	62
1950	31.8 °C27 July 1950	21.9 °C10 December 1950	26.2 °C	1,527 mm	70
1949	31.4 °C6 September 1949	21.5 °C2 March 1949	26.1 °C	2,566 mm	45
1948	31.3 °C11 June 1948	21.2 °C18 January 1948	25.6 °C	1,864 mm	10
1947	31.5 °C12 June 1947	22.3 °C30 January 1947	25.8 °C	2,135 mm	17
1946	29.8 °C16 May 1946	22.4 °C5 February 1946	25.5 °C	2,800 mm	0
1945	30.8 °C23 May 1945	22.4 °C8 March 1945	25.6 °C	2,367 mm	8
1944	29.8 °C1 May 1944	20.7 °C18 February 1944	25.3 °C	2,364 mm	0
1943	29.5 °C15 June 1943	21.4 °C26 February 1943	24.9 °C	1,785 mm	0
1942	30.1 °C10 May 1942	21.8 °C15 February 1942	25.4 °C	2,092 mm	1
1941	30.7 °C22 April 1941	21.2 °C8 February 1941	25.6 °C	1,744 mm	7
1940	30.0 °C9 May 1940	21.0 °C26 January 1940	25.2 °C	2,440 mm	1

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

29.7 °C

+0.8 °C

Hot days (≥ 30 °C)

164 d/yr

+60

Frost days (< 0 °C)

0 d/yr

Annual rainfall

3513 mm

+1469 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	28.2 °C	+1.0 °C	348 mm	+186 mm
Feb	28.5 °C	+1.0 °C	313 mm	+214 mm
Mar	28.9 °C	+0.5 °C	178 mm	+93 mm
Apr	30.6 °C	+1.0 °C	39 mm	-26 mm
May	31.0 °C	+0.6 °C	149 mm	+35 mm
Jun	30.3 °C	+0.2 °C	353 mm	+173 mm
Jul	30.4 °C	+0.9 °C	363 mm	+116 mm
Aug	30.2 °C	+0.7 °C	417 mm	+197 mm
Sep	29.6 °C	+0.2 °C	388 mm	+156 mm
Oct	30.2 °C	+1.1 °C	348 mm	+122 mm
Nov	29.8 °C	+1.3 °C	387 mm	+185 mm
Dec	28.9 °C	+1.3 °C	232 mm	+18 mm

The year's extremes

Hottest day

32.7 °C

3 Jun 2025

Coldest day

23.4 °C

1 Feb 2025

Wettest day

131.5 mm

31 Aug 2025

Windiest day

66.5 km/h

9 Nov 2025

Strongest gust

147.6 km/h

9 Nov 2025

Hottest feels-like

40.9 °C

6 May 2025

Coldest feels-like

19.3 °C

9 Nov 2025

Sunniest day

12.6 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 Bulan?

Bulan has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.6 °C and it receives 2,044 mm of precipitation per year.

What is the hottest day ever recorded in Bulan?

The hottest day measured in Bulan between 1940 and 2025 was 25 May 2010, reaching 34.2 °C.

What is the coldest day in Bulan?

The coldest day measured in Bulan between 1940 and 2025 was 5 April 1963, at 20.0 °C.

Does it snow in Bulan?

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

Has the climate of Bulan warmed?

Yes: Bulan warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Bulan?

The wettest day measured in Bulan between 1940 and 2025 was 5 May 1951, with 269 mm of rain in 24 hours.

What was the windiest day in Bulan?

The windiest day measured in Bulan between 1940 and 2025 was 20 November 1942, with winds reaching 82.0 km/h.

What is the warmest month in Bulan?

The warmest month in Bulan is May (27.7 °C on average); the coldest is January (25.2 °C).

How much does it rain in Bulan?

Bulan receives on average 2,044 mm of precipitation per year, spread over about 272 rainy days.

Is it sunny in Bulan?

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

Are there tropical nights in Bulan?

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

What was the most extreme apparent temperature in Bulan?

In Bulan, between 1940 and 2025, the highest apparent temperature reached 43.1 °C on 3 September 2020, and the lowest was 16.2 °C on 20 November 1942.

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