San Fernando climate — normals and trends

Q: What is the climate of San Fernando?

San Fernando has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.8 °C and it receives 2,462 mm of precipitation per year.

Q: What is the hottest day ever recorded in San Fernando?

The hottest day measured in San Fernando between 1940 and 2025 was 28 April 1998, reaching 33.7 °C.

Q: What is the coldest day in San Fernando?

The coldest day measured in San Fernando between 1940 and 2025 was 20 January 1961, at 19.0 °C.

Q: Does it snow in San Fernando?

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

Q: Has the climate of San Fernando warmed?

Yes: San Fernando warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in San Fernando?

The wettest day measured in San Fernando between 1940 and 2025 was 2 September 2024, with 405 mm of rain in 24 hours.

Q: What was the windiest day in San Fernando?

The windiest day measured in San Fernando between 1940 and 2025 was 27 October 1978, with winds reaching 76.4 km/h.

Q: What is the warmest month in San Fernando?

The warmest month in San Fernando is May (28.3 °C on average); the coldest is January (25.0 °C).

Q: How much does it rain in San Fernando?

San Fernando receives on average 2,462 mm of precipitation per year, spread over about 198 rainy days.

Q: Is it sunny in San Fernando?

San Fernando gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

San Fernando (Philippines) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.8 °C and it receives 2,462 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 (28.3 °C on average) and the coldest is January (25.0 °C). Rainfall peaks in August.

San Fernando averages 0 frost days, 67 hot days (≥ 30 °C) and 198 rainy days per year.

San Fernando has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.

The hottest day of the period reached 33.7 °C (on 28 April 1998) and the coldest 19.0 °C (on 20 January 1961).

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

San FernandoIlocos

coords: 16.62°, 120.32°
period: 1940–2025 · 86 yrs

AmTropical monsoonWarmest monthMayColdest monthJanuaryWettest monthAugustDriest monthMarch

Mean daily temperature

26.8°C

Average daily high

28.4°C

Average daily low

25.3°C

Annual rainfall

2,462mm

Sunshine / day

10.1h

Mean relative humidity

81%

Average peak wind

15.1km/h

Seasonal range

3.3°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

67 d/yr

Rainy days (≥ 1 mm)

198 d/yr

Annual snowfall

0.0 cm

Average feels-like high

34.1 °C

Average feels-like low

29.2 °C

Average peak gust

27.9 km/h

Tropical nights (≥ 20 °C)

365 d/yr

Solar radiation

19.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.4 °C

since 1940

+0.2 °C per decade · r² = 0.72 · 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

33.7 °C

28 April 1998

Coldest day

19.0 °C

20 January 1961

Wettest day

405 mm

2 September 2024

Windiest day

76.4 km/h

27 October 1978

Strongest gust

135.0 km/h

9 November 2025

Hottest feels-like

41.3 °C

5 May 2020

Coldest feels-like

18.6 °C

2 March 1963

Sunniest day

12.4 h

18 June 1959

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	32.3 °C16 May 2025	23.8 °C1 March 2025	27.6 °C	3,827 mm	98
2024	33.3 °C26 April 2024	22.5 °C27 January 2024	27.9 °C	3,350 mm	149
2023	32.7 °C6 May 2023	23.0 °C17 February 2023	27.8 °C	2,786 mm	138
2022	32.2 °C27 May 2022	22.5 °C16 January 2022	27.7 °C	2,223 mm	119
2021	32.4 °C21 May 2021	22.2 °C21 February 2021	27.6 °C	2,526 mm	101
2020	32.8 °C5 May 2020	22.1 °C21 February 2020	27.7 °C	2,125 mm	152
2019	32.8 °C7 June 2019	21.8 °C30 January 2019	27.4 °C	2,586 mm	91
2018	32.4 °C28 May 2018	22.4 °C7 February 2018	27.4 °C	3,464 mm	84
2017	32.8 °C13 June 2017	22.0 °C15 February 2017	27.5 °C	2,691 mm	114
2016	33.0 °C1 May 2016	22.6 °C8 February 2016	27.6 °C	2,826 mm	117
2015	32.7 °C14 June 2015	21.6 °C25 January 2015	27.2 °C	2,727 mm	113
2014	32.7 °C1 June 2014	20.8 °C20 January 2014	27.2 °C	2,535 mm	81
2013	32.6 °C8 May 2013	21.9 °C31 January 2013	27.4 °C	2,386 mm	112
2012	32.4 °C15 May 2012	23.3 °C6 February 2012	27.3 °C	3,144 mm	71
2011	32.2 °C16 June 2011	21.7 °C3 February 2011	27.0 °C	3,123 mm	59
2010	32.8 °C12 May 2010	22.3 °C15 January 2010	27.5 °C	1,780 mm	144
2009	31.7 °C26 May 2009	20.9 °C16 January 2009	27.0 °C	3,696 mm	64
2008	32.2 °C5 June 2008	22.7 °C6 March 2008	27.1 °C	2,674 mm	91
2007	32.9 °C17 April 2007	21.8 °C30 January 2007	27.2 °C	2,136 mm	106
2006	32.9 °C10 April 2006	23.2 °C5 February 2006	27.3 °C	2,695 mm	101
2005	32.7 °C5 May 2005	21.9 °C15 January 2005	27.0 °C	2,189 mm	77
2004	32.5 °C7 May 2004	22.3 °C18 February 2004	26.9 °C	2,662 mm	58
2003	32.0 °C20 July 2003	21.5 °C29 December 2003	27.0 °C	2,543 mm	92
2002	32.1 °C13 May 2002	21.1 °C12 January 2002	27.0 °C	2,931 mm	78
2001	31.7 °C18 May 2001	21.7 °C28 December 2001	27.1 °C	2,495 mm	58
2000	31.8 °C31 May 2000	21.3 °C30 January 2000	26.9 °C	3,250 mm	51
1999	31.6 °C16 May 1999	21.7 °C24 December 1999	26.9 °C	2,883 mm	51
1998	33.7 °C28 April 1998	21.5 °C10 January 1998	27.6 °C	2,394 mm	154
1997	32.5 °C6 May 1997	21.3 °C7 March 1997	26.7 °C	1,926 mm	57
1996	32.2 °C31 May 1996	20.5 °C12 February 1996	26.9 °C	2,236 mm	90
1995	32.2 °C6 May 1995	21.4 °C8 February 1995	26.9 °C	2,668 mm	72
1994	32.2 °C25 April 1994	22.0 °C20 January 1994	26.9 °C	2,529 mm	55
1993	32.4 °C1 May 1993	20.7 °C29 January 1993	26.9 °C	2,567 mm	82
1992	31.7 °C21 April 1992	21.0 °C27 February 1992	26.7 °C	2,787 mm	69
1991	33.1 °C9 June 1991	22.0 °C10 March 1991	26.7 °C	2,947 mm	48
1990	32.5 °C25 April 1990	22.0 °C19 January 1990	26.9 °C	3,110 mm	58
1989	31.7 °C4 June 1989	21.2 °C11 March 1989	26.7 °C	2,966 mm	49
1988	31.8 °C11 May 1988	20.7 °C14 December 1988	27.2 °C	2,304 mm	97
1987	31.7 °C18 May 1987	21.0 °C5 February 1987	27.1 °C	1,539 mm	85
1986	31.4 °C21 April 1986	21.1 °C10 January 1986	26.6 °C	2,784 mm	43
1985	31.2 °C26 May 1985	21.6 °C25 December 1985	26.5 °C	2,894 mm	24
1984	31.8 °C5 April 1984	21.7 °C4 January 1984	26.6 °C	3,337 mm	47
1983	32.7 °C25 June 1983	21.7 °C11 February 1983	26.9 °C	1,568 mm	98
1982	31.7 °C30 May 1982	20.6 °C4 February 1982	26.5 °C	2,527 mm	41
1981	32.3 °C30 April 1981	20.0 °C22 December 1981	26.6 °C	2,894 mm	72
1980	32.5 °C1 May 1980	20.3 °C25 December 1980	26.8 °C	2,514 mm	60
1979	33.3 °C10 May 1979	21.2 °C17 January 1979	26.8 °C	2,211 mm	99
1978	33.0 °C24 April 1978	20.8 °C24 January 1978	26.7 °C	3,194 mm	66
1977	32.2 °C5 May 1977	20.2 °C6 March 1977	26.7 °C	2,707 mm	77
1976	31.2 °C21 April 1976	20.3 °C9 February 1976	26.4 °C	3,549 mm	49
1975	32.6 °C12 April 1975	19.4 °C31 December 1975	26.8 °C	1,845 mm	86
1974	31.7 °C22 May 1974	19.8 °C15 January 1974	26.5 °C	3,233 mm	59
1973	33.4 °C22 May 1973	21.2 °C27 December 1973	27.0 °C	1,831 mm	100
1972	33.0 °C8 May 1972	20.4 °C6 March 1972	26.4 °C	3,938 mm	54
1971	31.8 °C28 May 1971	19.8 °C10 January 1971	26.2 °C	2,236 mm	32
1970	32.8 °C25 May 1970	20.1 °C2 February 1970	26.8 °C	2,080 mm	81
1969	33.0 °C18 May 1969	21.1 °C7 February 1969	26.8 °C	2,041 mm	84
1968	32.5 °C13 June 1968	20.3 °C19 January 1968	26.3 °C	1,759 mm	82
1967	31.9 °C28 May 1967	20.1 °C17 January 1967	26.1 °C	2,009 mm	44
1966	32.6 °C30 April 1966	22.2 °C25 January 1966	26.6 °C	1,531 mm	51
1965	31.4 °C28 April 1965	20.6 °C14 January 1965	26.2 °C	1,180 mm	29
1964	31.7 °C12 May 1964	21.8 °C6 February 1964	26.3 °C	2,145 mm	31
1963	32.6 °C18 May 1963	19.2 °C2 March 1963	26.2 °C	2,470 mm	38
1962	32.6 °C22 May 1962	19.9 °C3 February 1962	26.6 °C	1,790 mm	61
1961	32.2 °C7 June 1961	19.0 °C20 January 1961	26.5 °C	2,095 mm	58
1960	31.7 °C17 May 1960	22.0 °C6 February 1960	26.8 °C	1,920 mm	51
1959	32.6 °C15 June 1959	21.0 °C20 January 1959	26.8 °C	1,468 mm	80
1958	32.5 °C13 May 1958	21.4 °C22 February 1958	26.6 °C	2,137 mm	58
1957	32.4 °C1 June 1957	21.4 °C2 February 1957	26.6 °C	1,938 mm	50
1956	31.0 °C4 June 1956	21.3 °C11 January 1956	26.3 °C	2,489 mm	22
1955	31.8 °C4 May 1955	20.8 °C18 December 1955	26.5 °C	1,638 mm	51
1954	32.2 °C28 April 1954	22.3 °C25 January 1954	26.8 °C	2,135 mm	90
1953	31.9 °C1 June 1953	21.8 °C5 January 1953	26.9 °C	1,613 mm	50
1952	31.9 °C10 May 1952	22.3 °C22 January 1952	26.9 °C	1,384 mm	72
1951	31.3 °C5 June 1951	21.5 °C8 February 1951	26.7 °C	1,577 mm	49
1950	31.1 °C20 May 1950	21.9 °C12 December 1950	26.4 °C	1,944 mm	33
1949	31.9 °C11 May 1949	20.8 °C17 February 1949	26.6 °C	2,292 mm	50
1948	30.8 °C9 May 1948	19.8 °C5 January 1948	26.1 °C	2,069 mm	12
1947	31.2 °C27 June 1947	21.6 °C31 December 1947	26.3 °C	1,893 mm	22
1946	31.3 °C18 March 1946	22.1 °C10 February 1946	26.2 °C	2,951 mm	4
1945	30.3 °C26 May 1945	22.0 °C27 December 1945	26.2 °C	1,922 mm	2
1944	29.3 °C20 June 1944	20.9 °C9 January 1944	25.7 °C	3,520 mm	0
1943	29.1 °C12 June 1943	19.8 °C24 January 1943	25.3 °C	2,049 mm	0
1942	30.2 °C24 April 1942	20.4 °C7 December 1942	26.0 °C	1,659 mm	2
1941	30.0 °C25 April 1941	21.2 °C7 February 1941	26.1 °C	3,253 mm	2
1940	30.6 °C29 April 1940	20.5 °C27 January 1940	25.7 °C	3,309 mm	5

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

29.1 °C

+0.7 °C

Hot days (≥ 30 °C)

98 d/yr

+31

Frost days (< 0 °C)

0 d/yr

Annual rainfall

3827 mm

+1365 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	27.7 °C	+1.2 °C	65 mm	+35 mm
Feb	27.9 °C	+1.0 °C	69 mm	+46 mm
Mar	28.8 °C	+0.6 °C	45 mm	+23 mm
Apr	30.2 °C	+0.5 °C	16 mm	-18 mm
May	31.1 °C	+0.8 °C	166 mm	+8 mm
Jun	30.1 °C	+0.4 °C	399 mm	+74 mm
Jul	28.5 °C	-0.5 °C	1285 mm	+781 mm
Aug	29.5 °C	+0.9 °C	264 mm	-286 mm
Sep	29.2 °C	+0.5 °C	771 mm	+395 mm
Oct	29.8 °C	+1.2 °C	294 mm	+58 mm
Nov	28.7 °C	+0.7 °C	295 mm	+169 mm
Dec	28.1 °C	+1.0 °C	159 mm	+80 mm

The year's extremes

Hottest day

32.3 °C

16 May 2025

Coldest day

23.8 °C

1 Mar 2025

Wettest day

231.2 mm

5 Sep 2025

Windiest day

76.2 km/h

9 Nov 2025

Strongest gust

135.0 km/h

9 Nov 2025

Hottest feels-like

40.3 °C

19 May 2025

Coldest feels-like

23.9 °C

9 Nov 2025

Sunniest day

12.2 h

16 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 San Fernando?

San Fernando has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.8 °C and it receives 2,462 mm of precipitation per year.

What is the hottest day ever recorded in San Fernando?

The hottest day measured in San Fernando between 1940 and 2025 was 28 April 1998, reaching 33.7 °C.

What is the coldest day in San Fernando?

The coldest day measured in San Fernando between 1940 and 2025 was 20 January 1961, at 19.0 °C.

Does it snow in San Fernando?

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

Has the climate of San Fernando warmed?

Yes: San Fernando warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in San Fernando?

The wettest day measured in San Fernando between 1940 and 2025 was 2 September 2024, with 405 mm of rain in 24 hours.

What was the windiest day in San Fernando?

The windiest day measured in San Fernando between 1940 and 2025 was 27 October 1978, with winds reaching 76.4 km/h.

What is the warmest month in San Fernando?

The warmest month in San Fernando is May (28.3 °C on average); the coldest is January (25.0 °C).

How much does it rain in San Fernando?

San Fernando receives on average 2,462 mm of precipitation per year, spread over about 198 rainy days.

Is it sunny in San Fernando?

San Fernando gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Are there tropical nights in San Fernando?

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

What was the most extreme apparent temperature in San Fernando?

In San Fernando, between 1940 and 2025, the highest apparent temperature reached 41.3 °C on 5 May 2020, and the lowest was 18.6 °C on 2 March 1963.

Compare San Fernando with another city

Pick a second city: its normals will be set against these, indicator by indicator.

Nearby cities

The climate around San Fernando

Other cities — Philippines

All cities in Philippines →