San Jose climate — normals and trends

Q: What is the climate of San Jose?

San Jose has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.9 °C and it receives 1,712 mm of precipitation per year.

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

The hottest day measured in San Jose between 1940 and 2025 was 16 August 1946, reaching 30.0 °C.

Q: What is the coldest day in San Jose?

The coldest day measured in San Jose between 1940 and 2025 was 21 February 1990, at 23.2 °C.

Q: Does it snow in San Jose?

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

Q: Has the climate of San Jose warmed?

Yes: San Jose warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in San Jose?

The wettest day measured in San Jose between 1940 and 2025 was 30 April 1963, with 263 mm of rain in 24 hours.

Q: What was the windiest day in San Jose?

The windiest day measured in San Jose between 1940 and 2025 was 11 November 1962, with winds reaching 126.9 km/h.

Q: What is the warmest month in San Jose?

The warmest month in San Jose is June (27.5 °C on average); the coldest is February (25.9 °C).

Q: How much does it rain in San Jose?

San Jose receives on average 1,712 mm of precipitation per year, spread over about 236 rainy days.

Q: Is it sunny in San Jose?

San Jose gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.

San Jose (Northern Mariana Islands) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.9 °C and it receives 1,712 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 (27.5 °C on average) and the coldest is February (25.9 °C). Rainfall peaks in August.

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

San Jose has warmed by +0.7 °C between 1940 and 2025, or +0.08 °C per decade. This trend is statistically significant.

The hottest day of the period reached 30.0 °C (on 16 August 1946) and the coldest 23.2 °C (on 21 February 1990).

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 JoseTinian

coords: 14.97°, 145.62°
period: 1940–2025 · 86 yrs

AmTropical monsoonWarmest monthJuneColdest monthFebruaryWettest monthAugustDriest monthMarch

Mean daily temperature

26.9°C

Average daily high

27.6°C

Average daily low

26.1°C

Annual rainfall

1,712mm

Sunshine / day

10.9h

Mean relative humidity

82%

Average peak wind

28.8km/h

Seasonal range

1.6°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

0 d/yr

Rainy days (≥ 1 mm)

236 d/yr

Annual snowfall

0.0 cm

Average feels-like high

31.0 °C

Average feels-like low

28.2 °C

Average peak gust

39.4 km/h

Tropical nights (≥ 20 °C)

365 d/yr

Solar radiation

20.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.7 °C

since 1940

+0.1 °C per decade · r² = 0.57 · 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

30.0 °C

16 August 1946

Coldest day

23.2 °C

21 February 1990

Wettest day

263 mm

30 April 1963

Windiest day

126.9 km/h

11 November 1962

Strongest gust

157.0 km/h

2 November 1997

Hottest feels-like

38.5 °C

9 August 2024

Coldest feels-like

14.8 °C

11 November 1962

Sunniest day

12.8 h

10 July 2024

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	29.4 °C19 June 2025	24.9 °C3 April 2025	27.6 °C	1,859 mm	0
2024	29.8 °C12 August 2024	24.4 °C14 February 2024	27.5 °C	2,123 mm	0
2023	29.3 °C30 July 2023	24.8 °C9 March 2023	27.5 °C	2,199 mm	0
2022	29.4 °C16 July 2022	24.8 °C3 January 2022	27.4 °C	2,064 mm	0
2021	29.4 °C24 July 2021	25.1 °C31 January 2021	27.5 °C	1,709 mm	0
2020	29.6 °C22 August 2020	24.8 °C12 February 2020	27.4 °C	1,402 mm	0
2019	29.6 °C11 July 2019	24.7 °C31 January 2019	27.3 °C	2,180 mm	0
2018	29.1 °C26 May 2018	24.5 °C29 January 2018	27.3 °C	2,241 mm	0
2017	29.9 °C1 September 2017	24.5 °C8 January 2017	27.5 °C	1,727 mm	0
2016	29.8 °C21 July 2016	24.4 °C22 February 2016	27.3 °C	1,780 mm	0
2015	29.8 °C6 October 2015	23.8 °C17 February 2015	27.1 °C	2,051 mm	0
2014	29.8 °C22 June 2014	24.0 °C7 March 2014	27.4 °C	1,908 mm	0
2013	29.4 °C26 August 2013	24.4 °C15 March 2013	27.3 °C	1,619 mm	0
2012	29.5 °C13 May 2012	24.8 °C20 January 2012	27.1 °C	1,870 mm	0
2011	29.2 °C5 June 2011	24.5 °C24 February 2011	27.1 °C	2,025 mm	0
2010	29.4 °C3 July 2010	24.3 °C26 February 2010	27.0 °C	1,343 mm	0
2009	29.4 °C15 June 2009	24.4 °C16 March 2009	27.3 °C	1,907 mm	0
2008	29.2 °C31 July 2008	24.3 °C19 February 2008	27.2 °C	1,429 mm	0
2007	29.7 °C9 July 2007	23.7 °C4 March 2007	27.1 °C	1,996 mm	0
2006	29.2 °C2 September 2006	24.4 °C30 January 2006	27.1 °C	1,620 mm	0
2005	29.1 °C28 August 2005	24.4 °C9 February 2005	27.0 °C	1,727 mm	0
2004	29.2 °C4 June 2004	24.5 °C11 January 2004	27.1 °C	2,308 mm	0
2003	29.6 °C4 September 2003	23.9 °C11 March 2003	27.0 °C	1,942 mm	0
2002	29.2 °C24 June 2002	24.2 °C31 January 2002	27.1 °C	1,640 mm	0
2001	29.3 °C11 June 2001	24.7 °C24 March 2001	27.2 °C	1,380 mm	0
2000	29.2 °C5 July 2000	24.7 °C21 January 2000	27.1 °C	1,646 mm	0
1999	29.3 °C26 August 1999	24.9 °C30 January 1999	27.2 °C	1,483 mm	0
1998	29.4 °C9 September 1998	24.2 °C20 March 1998	27.1 °C	855 mm	0
1997	29.2 °C11 July 1997	24.0 °C14 March 1997	26.9 °C	1,922 mm	0
1996	29.2 °C12 June 1996	24.3 °C22 February 1996	27.1 °C	2,080 mm	0
1995	29.0 °C2 July 1995	23.9 °C8 March 1995	26.9 °C	1,273 mm	0
1994	29.4 °C5 September 1994	24.3 °C25 February 1994	26.9 °C	1,744 mm	0
1993	28.8 °C16 October 1993	24.0 °C23 January 1993	26.6 °C	1,311 mm	0
1992	28.6 °C31 July 1992	23.6 °C26 February 1992	26.6 °C	1,308 mm	0
1991	29.2 °C5 August 1991	24.1 °C27 December 1991	26.6 °C	1,827 mm	0
1990	28.8 °C3 July 1990	23.2 °C21 February 1990	26.8 °C	1,912 mm	0
1989	28.9 °C3 July 1989	24.5 °C17 March 1989	26.9 °C	1,837 mm	0
1988	29.6 °C8 September 1988	24.3 °C21 February 1988	27.1 °C	1,525 mm	0
1987	28.9 °C20 October 1987	24.0 °C5 February 1987	26.8 °C	1,077 mm	0
1986	28.9 °C19 June 1986	24.2 °C18 February 1986	26.8 °C	2,121 mm	0
1985	28.9 °C23 November 1985	24.4 °C15 February 1985	26.8 °C	1,744 mm	0
1984	29.1 °C12 June 1984	24.2 °C9 February 1984	27.0 °C	1,405 mm	0
1983	29.1 °C26 October 1983	23.7 °C9 March 1983	26.6 °C	882 mm	0
1982	28.6 °C4 July 1982	23.9 °C14 February 1982	26.6 °C	1,433 mm	0
1981	29.3 °C4 August 1981	24.4 °C8 March 1981	27.1 °C	1,890 mm	0
1980	29.0 °C23 September 1980	23.9 °C28 January 1980	26.8 °C	2,008 mm	0
1979	29.0 °C18 August 1979	24.1 °C7 February 1979	26.8 °C	1,330 mm	0
1978	29.2 °C6 October 1978	23.5 °C7 February 1978	26.7 °C	2,082 mm	0
1977	29.3 °C23 October 1977	24.4 °C7 February 1977	26.8 °C	1,274 mm	0
1976	28.7 °C16 September 1976	23.8 °C16 February 1976	26.6 °C	2,067 mm	0
1975	28.6 °C20 June 1975	24.0 °C2 February 1975	26.7 °C	1,691 mm	0
1974	29.3 °C5 October 1974	24.0 °C15 January 1974	26.8 °C	1,892 mm	0
1973	28.7 °C1 September 1973	23.9 °C29 January 1973	26.8 °C	1,210 mm	0
1972	28.5 °C6 July 1972	23.3 °C5 February 1972	26.5 °C	1,446 mm	0
1971	28.9 °C30 May 1971	24.3 °C19 January 1971	27.0 °C	1,629 mm	0
1970	29.1 °C9 August 1970	24.2 °C10 February 1970	27.0 °C	1,294 mm	0
1969	28.9 °C12 October 1969	24.0 °C10 February 1969	26.8 °C	1,257 mm	0
1968	28.8 °C4 July 1968	23.9 °C19 February 1968	26.7 °C	1,744 mm	0
1967	29.1 °C2 August 1967	24.0 °C12 March 1967	26.7 °C	1,993 mm	0
1966	29.0 °C20 June 1966	24.2 °C3 March 1966	26.9 °C	1,193 mm	0
1965	28.5 °C16 September 1965	23.8 °C23 March 1965	26.6 °C	1,353 mm	0
1964	28.9 °C19 June 1964	24.2 °C4 February 1964	26.7 °C	1,819 mm	0
1963	28.7 °C27 August 1963	24.1 °C6 February 1963	26.6 °C	2,458 mm	0
1962	28.8 °C6 September 1962	24.4 °C5 March 1962	26.8 °C	2,235 mm	0
1961	28.7 °C28 July 1961	24.3 °C3 March 1961	26.8 °C	2,135 mm	0
1960	28.7 °C30 November 1960	24.3 °C26 March 1960	26.8 °C	2,023 mm	0
1959	28.7 °C9 September 1959	23.8 °C14 January 1959	26.6 °C	1,623 mm	0
1958	28.8 °C24 September 1958	23.9 °C26 March 1958	26.7 °C	1,725 mm	0
1957	28.7 °C11 September 1957	23.6 °C15 February 1957	26.8 °C	1,251 mm	0
1956	28.6 °C8 August 1956	23.9 °C18 January 1956	26.6 °C	1,656 mm	0
1955	28.8 °C8 October 1955	24.1 °C28 March 1955	26.7 °C	1,694 mm	0
1954	29.0 °C12 July 1954	24.1 °C25 January 1954	26.8 °C	1,928 mm	0
1953	28.9 °C14 June 1953	24.5 °C1 March 1953	27.0 °C	1,802 mm	0
1952	29.2 °C22 September 1952	24.3 °C23 January 1952	27.0 °C	1,482 mm	0
1951	28.8 °C3 September 1951	24.0 °C23 February 1951	26.9 °C	1,522 mm	0
1950	28.6 °C14 June 1950	24.1 °C12 January 1950	26.6 °C	1,692 mm	0
1949	28.8 °C22 June 1949	23.9 °C4 March 1949	26.7 °C	1,196 mm	0
1948	28.6 °C23 July 1948	23.7 °C10 March 1948	26.7 °C	1,488 mm	0
1947	28.9 °C15 November 1947	24.4 °C2 February 1947	26.9 °C	1,925 mm	0
1946	30.0 °C16 August 1946	24.5 °C23 February 1946	27.1 °C	2,557 mm	1
1945	28.9 °C2 September 1945	24.0 °C13 February 1945	27.0 °C	1,500 mm	0
1944	29.1 °C29 August 1944	24.0 °C16 February 1944	26.7 °C	1,719 mm	0
1943	28.7 °C19 October 1943	24.2 °C23 February 1943	26.5 °C	1,431 mm	0
1942	28.8 °C9 August 1942	23.4 °C23 February 1942	26.6 °C	2,070 mm	0
1941	28.7 °C23 June 1941	23.8 °C27 January 1941	26.6 °C	1,325 mm	0
1940	29.0 °C12 September 1940	23.8 °C12 February 1940	26.6 °C	2,191 mm	0

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

28.3 °C

+0.7 °C

Hot days (≥ 30 °C)

0 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1859 mm

+147 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	28.1 °C	+1.3 °C	29 mm	-38 mm
Feb	27.2 °C	+0.7 °C	53 mm	+3 mm
Mar	27.5 °C	+0.8 °C	43 mm	-3 mm
Apr	28.0 °C	+0.8 °C	36 mm	-23 mm
May	28.5 °C	+0.8 °C	61 mm	-12 mm
Jun	28.7 °C	+0.5 °C	217 mm	+107 mm
Jul	28.6 °C	+0.5 °C	440 mm	+216 mm
Aug	28.6 °C	+0.5 °C	274 mm	-36 mm
Sep	28.5 °C	+0.4 °C	305 mm	+26 mm
Oct	28.7 °C	+0.6 °C	226 mm	-36 mm
Nov	28.9 °C	+0.9 °C	115 mm	-28 mm
Dec	28.4 °C	+0.8 °C	61 mm	-29 mm

The year's extremes

Hottest day

29.4 °C

19 Jun 2025

Coldest day

24.9 °C

3 Apr 2025

Wettest day

77.5 mm

26 Jun 2025

Windiest day

55.8 km/h

25 Jul 2025

Strongest gust

75.2 km/h

26 Jul 2025

Hottest feels-like

36.1 °C

20 Jun 2025

Coldest feels-like

24.6 °C

21 Feb 2025

Sunniest day

12.8 h

20 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 Jose?

San Jose has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.9 °C and it receives 1,712 mm of precipitation per year.

What is the hottest day ever recorded in San Jose?

The hottest day measured in San Jose between 1940 and 2025 was 16 August 1946, reaching 30.0 °C.

What is the coldest day in San Jose?

The coldest day measured in San Jose between 1940 and 2025 was 21 February 1990, at 23.2 °C.

Does it snow in San Jose?

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

Has the climate of San Jose warmed?

Yes: San Jose warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in San Jose?

The wettest day measured in San Jose between 1940 and 2025 was 30 April 1963, with 263 mm of rain in 24 hours.

What was the windiest day in San Jose?

The windiest day measured in San Jose between 1940 and 2025 was 11 November 1962, with winds reaching 126.9 km/h.

What is the warmest month in San Jose?

The warmest month in San Jose is June (27.5 °C on average); the coldest is February (25.9 °C).

How much does it rain in San Jose?

San Jose receives on average 1,712 mm of precipitation per year, spread over about 236 rainy days.

Is it sunny in San Jose?

San Jose gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.

Are there tropical nights in San Jose?

Yes: San Jose 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 Jose?

In San Jose, between 1940 and 2025, the highest apparent temperature reached 38.5 °C on 9 August 2024, and the lowest was 14.8 °C on 11 November 1962.

Compare San Jose with another city

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Nearby cities

The climate around San Jose

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