Puerto Rico climate — normals and trends

Q: What is the climate of Puerto Rico?

Puerto Rico has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 19.1 °C and it receives 143 mm of precipitation per year.

Q: What is the hottest day ever recorded in Puerto Rico?

The hottest day measured in Puerto Rico between 1940 and 2025 was 11 August 2023, reaching 31.9 °C.

Q: What is the coldest day in Puerto Rico?

The coldest day measured in Puerto Rico between 1940 and 2025 was 12 February 1981, at 10.8 °C.

Q: Does it snow in Puerto Rico?

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

Q: Has the climate of Puerto Rico warmed?

Yes: Puerto Rico warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Puerto Rico?

The wettest day measured in Puerto Rico between 1940 and 2025 was 25 November 1989, with 85 mm of rain in 24 hours.

Q: What was the windiest day in Puerto Rico?

The windiest day measured in Puerto Rico between 1940 and 2025 was 18 February 2010, with winds reaching 59.0 km/h.

Q: What is the warmest month in Puerto Rico?

The warmest month in Puerto Rico is August (22.4 °C on average); the coldest is February (16.4 °C).

Q: How much does it rain in Puerto Rico?

Puerto Rico receives on average 143 mm of precipitation per year, spread over about 28 rainy days.

Q: Is it sunny in Puerto Rico?

Puerto Rico gets on average 11.5 hours of sunshine per day, roughly 4,198 hours per year over 1940-2025.

Puerto Rico (Spain) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 19.1 °C and it receives 143 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 August (22.4 °C on average) and the coldest is February (16.4 °C). Rainfall peaks in December.

Puerto Rico averages 0 frost days, 1 hot days (≥ 30 °C) and 28 rainy days per year.

Puerto Rico has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.

The hottest day of the period reached 31.9 °C (on 11 August 2023) and the coldest 10.8 °C (on 12 February 1981).

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

Puerto RicoCanary Islands

coords: 27.79°, -15.71°
period: 1940–2025 · 86 yrs

BWhHot desertWarmest monthAugustColdest monthFebruaryWettest monthDecemberDriest monthJuly

Mean daily temperature

19.1°C

Average daily high

20.8°C

Average daily low

17.8°C

Annual rainfall

143mm

Sunshine / day

11.5h

Mean relative humidity

74%

Average peak wind

21.3km/h

Seasonal range

6.0°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

1 d/yr

Rainy days (≥ 1 mm)

28 d/yr

Annual snowfall

0.0 cm

Average feels-like high

21.5 °C

Average feels-like low

16.6 °C

Average peak gust

34.2 km/h

Tropical nights (≥ 20 °C)

80 d/yr

Solar radiation

21.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.9 °C

since 1940

+0.1 °C per decade · r² = 0.31 · 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

31.9 °C

11 August 2023

Coldest day

10.8 °C

12 February 1981

Wettest day

85 mm

25 November 1989

Windiest day

59.0 km/h

18 February 2010

Strongest gust

104.4 km/h

28 November 2005

Hottest feels-like

35.1 °C

13 August 1976

Coldest feels-like

5.5 °C

19 January 1994

Sunniest day

13.8 h

14 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	30.2 °C18 September 2025	12.8 °C13 December 2025	19.9 °C	125 mm	3
2024	28.8 °C25 July 2024	14.6 °C23 March 2024	20.3 °C	50 mm	0
2023	31.9 °C11 August 2023	13.4 °C16 February 2023	20.9 °C	82 mm	6
2022	30.7 °C25 July 2022	12.1 °C15 March 2022	20.1 °C	142 mm	3
2021	30.4 °C15 August 2021	12.9 °C5 February 2021	19.6 °C	81 mm	2
2020	31.1 °C27 August 2020	13.3 °C23 March 2020	20.1 °C	49 mm	2
2019	29.8 °C17 August 2019	13.7 °C25 March 2019	19.4 °C	40 mm	0
2018	27.2 °C24 August 2018	12.4 °C8 February 2018	19.0 °C	144 mm	0
2017	29.2 °C13 October 2017	14.0 °C25 March 2017	20.0 °C	43 mm	0
2016	29.5 °C5 August 2016	11.4 °C19 February 2016	19.5 °C	127 mm	0
2015	28.6 °C7 July 2015	13.3 °C23 March 2015	19.5 °C	96 mm	0
2014	28.2 °C22 October 2014	12.3 °C16 February 2014	19.2 °C	95 mm	0
2013	30.1 °C16 August 2013	14.0 °C1 March 2013	19.6 °C	76 mm	1
2012	30.5 °C17 July 2012	12.6 °C12 February 2012	19.6 °C	95 mm	2
2011	30.7 °C8 September 2011	12.0 °C14 March 2011	19.5 °C	86 mm	3
2010	31.0 °C12 August 2010	13.8 °C18 February 2010	20.0 °C	340 mm	2
2009	31.0 °C31 July 2009	13.2 °C12 January 2009	19.5 °C	150 mm	3
2008	27.6 °C28 June 2008	14.4 °C1 January 2008	19.3 °C	112 mm	0
2007	31.3 °C29 July 2007	14.0 °C22 February 2007	19.2 °C	111 mm	3
2006	30.2 °C4 September 2006	13.0 °C12 January 2006	19.5 °C	189 mm	1
2005	30.7 °C4 September 2005	11.9 °C30 January 2005	19.2 °C	192 mm	2
2004	30.0 °C25 July 2004	14.2 °C19 February 2004	19.6 °C	228 mm	1
2003	29.0 °C21 May 2003	12.9 °C15 January 2003	19.6 °C	61 mm	0
2002	28.1 °C5 October 2002	14.0 °C3 March 2002	19.3 °C	164 mm	0
2001	28.3 °C6 August 2001	14.2 °C8 January 2001	19.5 °C	131 mm	0
2000	27.9 °C30 July 2000	12.4 °C7 January 2000	19.0 °C	59 mm	0
1999	28.1 °C28 August 1999	12.1 °C12 January 1999	18.9 °C	76 mm	0
1998	30.8 °C5 August 1998	14.0 °C27 January 1998	19.6 °C	120 mm	1
1997	26.1 °C15 August 1997	12.2 °C21 January 1997	19.8 °C	80 mm	0
1996	26.0 °C30 May 1996	12.7 °C11 March 1996	19.2 °C	281 mm	0
1995	28.6 °C28 July 1995	13.8 °C12 March 1995	19.6 °C	108 mm	0
1994	29.4 °C4 July 1994	11.7 °C21 January 1994	19.1 °C	34 mm	0
1993	28.7 °C12 August 1993	12.5 °C4 March 1993	18.5 °C	130 mm	0
1992	29.4 °C27 August 1992	13.4 °C23 February 1992	18.9 °C	89 mm	0
1991	27.6 °C2 September 1991	12.6 °C18 February 1991	18.9 °C	176 mm	0
1990	31.1 °C27 August 1990	13.3 °C20 December 1990	19.6 °C	147 mm	2
1989	27.9 °C24 August 1989	13.2 °C19 February 1989	19.3 °C	255 mm	0
1988	30.4 °C1 August 1988	10.8 °C1 March 1988	19.0 °C	160 mm	1
1987	29.0 °C7 September 1987	13.3 °C20 February 1987	19.7 °C	135 mm	0
1986	29.2 °C6 September 1986	13.0 °C28 February 1986	18.6 °C	56 mm	0
1985	29.2 °C22 August 1985	12.5 °C23 February 1985	19.2 °C	79 mm	0
1984	28.8 °C28 July 1984	13.0 °C20 March 1984	18.8 °C	156 mm	0
1983	29.3 °C25 September 1983	12.5 °C11 February 1983	19.2 °C	114 mm	0
1982	29.6 °C26 July 1982	12.7 °C9 March 1982	18.7 °C	118 mm	0
1981	27.4 °C9 September 1981	10.8 °C12 February 1981	18.9 °C	100 mm	0
1980	29.1 °C7 August 1980	12.9 °C3 March 1980	19.0 °C	139 mm	0
1979	28.9 °C29 July 1979	13.0 °C22 December 1979	18.7 °C	221 mm	0
1978	29.5 °C17 July 1978	12.9 °C15 January 1978	18.9 °C	98 mm	0
1977	26.4 °C13 September 1977	13.1 °C30 December 1977	18.7 °C	148 mm	0
1976	31.2 °C9 August 1976	12.4 °C28 January 1976	18.6 °C	137 mm	7
1975	29.0 °C28 July 1975	13.4 °C11 March 1975	18.6 °C	93 mm	0
1974	29.1 °C6 August 1974	12.5 °C24 March 1974	18.4 °C	102 mm	0
1973	27.6 °C14 August 1973	13.2 °C19 January 1973	18.6 °C	109 mm	0
1972	24.9 °C24 July 1972	12.2 °C22 February 1972	17.9 °C	282 mm	0
1971	27.7 °C15 October 1971	11.6 °C11 February 1971	18.3 °C	206 mm	0
1970	28.2 °C18 July 1970	12.5 °C7 February 1970	18.9 °C	291 mm	0
1969	29.4 °C20 July 1969	14.1 °C3 April 1969	19.2 °C	291 mm	0
1968	28.2 °C22 July 1968	11.4 °C27 March 1968	18.7 °C	244 mm	0
1967	28.9 °C20 July 1967	12.3 °C10 February 1967	18.7 °C	197 mm	0
1966	31.3 °C19 August 1966	13.0 °C19 December 1966	19.2 °C	90 mm	3
1965	27.0 °C15 August 1965	11.8 °C6 January 1965	18.7 °C	197 mm	0
1964	27.9 °C27 September 1964	13.2 °C15 February 1964	19.2 °C	91 mm	0
1963	27.8 °C30 September 1963	13.7 °C27 February 1963	18.9 °C	170 mm	0
1962	28.9 °C31 August 1962	12.8 °C2 January 1962	19.2 °C	245 mm	0
1961	30.0 °C17 August 1961	13.3 °C16 January 1961	19.7 °C	104 mm	2
1960	27.7 °C24 August 1960	11.6 °C21 March 1960	18.9 °C	121 mm	0
1959	29.2 °C17 August 1959	13.2 °C6 February 1959	18.4 °C	117 mm	0
1958	29.2 °C15 August 1958	13.2 °C5 January 1958	19.1 °C	105 mm	0
1957	30.3 °C11 July 1957	11.1 °C21 January 1957	18.7 °C	185 mm	2
1956	31.1 °C2 August 1956	12.3 °C14 March 1956	18.5 °C	333 mm	2
1955	28.1 °C11 August 1955	12.9 °C10 March 1955	19.5 °C	161 mm	0
1954	29.3 °C25 July 1954	11.3 °C6 February 1954	18.4 °C	180 mm	0
1953	30.5 °C21 July 1953	13.4 °C14 February 1953	19.0 °C	363 mm	2
1952	30.4 °C12 July 1952	12.4 °C11 January 1952	19.0 °C	175 mm	2
1951	27.9 °C4 September 1951	12.6 °C14 February 1951	18.8 °C	119 mm	0
1950	27.4 °C12 September 1950	13.5 °C19 February 1950	19.0 °C	217 mm	0
1949	30.2 °C26 August 1949	13.5 °C10 March 1949	19.5 °C	196 mm	1
1948	29.0 °C4 August 1948	14.0 °C13 February 1948	19.3 °C	100 mm	0
1947	27.9 °C5 August 1947	13.7 °C1 February 1947	19.1 °C	91 mm	0
1946	29.7 °C15 September 1946	13.7 °C26 February 1946	19.2 °C	126 mm	0
1945	29.3 °C23 July 1945	12.4 °C16 January 1945	19.3 °C	150 mm	0
1944	29.2 °C31 July 1944	13.1 °C25 February 1944	18.9 °C	125 mm	0
1943	28.2 °C9 August 1943	12.3 °C19 March 1943	18.8 °C	141 mm	0
1942	28.9 °C9 August 1942	12.6 °C13 January 1942	19.2 °C	145 mm	0
1941	29.9 °C23 July 1941	12.6 °C19 January 1941	19.1 °C	134 mm	0
1940	29.1 °C25 August 1940	13.5 °C13 February 1940	18.9 °C	108 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

21.7 °C

+0.9 °C

Hot days (≥ 30 °C)

3 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

125 mm

-18 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	19.1 °C	+1.3 °C	6 mm	-16 mm
Feb	19.1 °C	+1.2 °C	2 mm	-20 mm
Mar	18.5 °C	-0.1 °C	19 mm	+4 mm
Apr	19.6 °C	+0.6 °C	24 mm	+16 mm
May	20.8 °C	+0.7 °C	4 mm	+1 mm
Jun	23.0 °C	+1.3 °C	0 mm	-1 mm
Jul	24.6 °C	+0.8 °C	0 mm	-0 mm
Aug	26.1 °C	+1.5 °C	0 mm	-0 mm
Sep	25.0 °C	+1.1 °C	0 mm	-6 mm
Oct	23.1 °C	+0.4 °C	3 mm	-13 mm
Nov	22.0 °C	+1.2 °C	49 mm	+25 mm
Dec	19.0 °C	+0.3 °C	17 mm	-8 mm

The year's extremes

Hottest day

30.2 °C

18 Sep 2025

Coldest day

12.8 °C

13 Dec 2025

Wettest day

39.0 mm

13 Nov 2025

Windiest day

43.3 km/h

3 Apr 2025

Strongest gust

72.4 km/h

3 Apr 2025

Hottest feels-like

33.9 °C

9 Aug 2025

Coldest feels-like

7.0 °C

13 Dec 2025

Sunniest day

13.8 h

14 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 Puerto Rico?

Puerto Rico has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 19.1 °C and it receives 143 mm of precipitation per year.

What is the hottest day ever recorded in Puerto Rico?

The hottest day measured in Puerto Rico between 1940 and 2025 was 11 August 2023, reaching 31.9 °C.

What is the coldest day in Puerto Rico?

The coldest day measured in Puerto Rico between 1940 and 2025 was 12 February 1981, at 10.8 °C.

Does it snow in Puerto Rico?

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

Has the climate of Puerto Rico warmed?

Yes: Puerto Rico warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Puerto Rico?

The wettest day measured in Puerto Rico between 1940 and 2025 was 25 November 1989, with 85 mm of rain in 24 hours.

What was the windiest day in Puerto Rico?

The windiest day measured in Puerto Rico between 1940 and 2025 was 18 February 2010, with winds reaching 59.0 km/h.

What is the warmest month in Puerto Rico?

The warmest month in Puerto Rico is August (22.4 °C on average); the coldest is February (16.4 °C).

How much does it rain in Puerto Rico?

Puerto Rico receives on average 143 mm of precipitation per year, spread over about 28 rainy days.

Is it sunny in Puerto Rico?

Puerto Rico gets on average 11.5 hours of sunshine per day, roughly 4,198 hours per year over 1940-2025.

Are there tropical nights in Puerto Rico?

Yes: Puerto Rico has on average 80 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Puerto Rico?

In Puerto Rico, between 1940 and 2025, the highest apparent temperature reached 35.1 °C on 13 August 1976, and the lowest was 5.5 °C on 19 January 1994.

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