Sanya climate — normals and trends

Q: What is the climate of Sanya?

Sanya has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.7 °C and it receives 1,507 mm of precipitation per year.

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

The hottest day measured in Sanya between 1940 and 2025 was 21 May 2020, reaching 32.7 °C.

Q: What is the coldest day in Sanya?

The coldest day measured in Sanya between 1940 and 2025 was 25 January 2016, at 9.2 °C.

Q: Does it snow in Sanya?

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

Q: Has the climate of Sanya warmed?

Yes: Sanya warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Sanya?

The wettest day measured in Sanya between 1940 and 2025 was 10 August 1978, with 239 mm of rain in 24 hours.

Q: What was the windiest day in Sanya?

The windiest day measured in Sanya between 1940 and 2025 was 10 November 2013, with winds reaching 84.1 km/h.

Q: What is the warmest month in Sanya?

The warmest month in Sanya is June (27.8 °C on average); the coldest is January (20.3 °C).

Q: How much does it rain in Sanya?

Sanya receives on average 1,507 mm of precipitation per year, spread over about 167 rainy days.

Q: Is it sunny in Sanya?

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

Sanya (China) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.7 °C and it receives 1,507 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 (27.8 °C on average) and the coldest is January (20.3 °C). Rainfall peaks in August.

Sanya averages 0 frost days, 31 hot days (≥ 30 °C) and 167 rainy days per year.

Sanya has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.

The hottest day of the period reached 32.7 °C (on 21 May 2020) and the coldest 9.2 °C (on 25 January 2016).

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

SanyaHainan

coords: 18.25°, 109.51°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthJuneColdest monthJanuaryWettest monthAugustDriest monthJanuary

Mean daily temperature

24.7°C

Average daily high

26.7°C

Average daily low

23.1°C

Annual rainfall

1,507mm

Sunshine / day

10.1h

Mean relative humidity

82%

Average peak wind

18.8km/h

Seasonal range

7.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

31 d/yr

Rainy days (≥ 1 mm)

167 d/yr

Annual snowfall

0.0 cm

Average feels-like high

30.4 °C

Average feels-like low

25.6 °C

Average peak gust

33.2 km/h

Tropical nights (≥ 20 °C)

292 d/yr

Solar radiation

17.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.45 · 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

32.7 °C

21 May 2020

Coldest day

9.2 °C

25 January 2016

Wettest day

239 mm

10 August 1978

Windiest day

84.1 km/h

10 November 2013

Strongest gust

156.2 km/h

10 November 2013

Hottest feels-like

41.0 °C

24 May 2017

Coldest feels-like

4.6 °C

25 January 2016

Sunniest day

12.9 h

6 June 1950

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	31.5 °C2 June 2025	13.9 °C12 January 2025	25.2 °C	1,838 mm	62
2024	32.3 °C14 June 2024	15.1 °C25 January 2024	25.9 °C	1,494 mm	97
2023	32.3 °C23 May 2023	13.5 °C30 January 2023	25.7 °C	1,396 mm	93
2022	32.4 °C4 September 2022	14.4 °C19 December 2022	25.3 °C	1,802 mm	73
2021	31.9 °C28 June 2021	11.3 °C12 January 2021	25.3 °C	1,217 mm	81
2020	32.7 °C21 May 2020	14.4 °C31 December 2020	25.5 °C	1,834 mm	87
2019	32.6 °C20 May 2019	15.3 °C7 December 2019	26.0 °C	1,058 mm	95
2018	31.4 °C8 May 2018	13.2 °C6 February 2018	25.2 °C	2,017 mm	63
2017	32.0 °C5 June 2017	12.6 °C19 December 2017	25.4 °C	1,717 mm	76
2016	32.0 °C14 June 2016	9.2 °C25 January 2016	25.2 °C	1,736 mm	78
2015	32.1 °C4 July 2015	13.7 °C15 January 2015	25.4 °C	1,378 mm	81
2014	31.5 °C5 June 2014	13.2 °C14 January 2014	25.0 °C	1,323 mm	74
2013	31.7 °C20 May 2013	13.8 °C29 December 2013	24.9 °C	1,941 mm	38
2012	31.0 °C12 June 2012	13.2 °C31 December 2012	25.2 °C	1,381 mm	40
2011	31.7 °C12 May 2011	13.6 °C12 January 2011	24.3 °C	1,826 mm	43
2010	31.8 °C1 June 2010	11.9 °C17 December 2010	25.2 °C	1,821 mm	61
2009	31.7 °C9 September 2009	13.2 °C14 January 2009	25.0 °C	1,462 mm	52
2008	30.9 °C28 May 2008	13.7 °C15 February 2008	24.6 °C	1,469 mm	30
2007	31.5 °C9 June 2007	13.8 °C29 January 2007	24.9 °C	1,602 mm	48
2006	31.7 °C9 June 2006	14.5 °C7 January 2006	25.2 °C	1,090 mm	48
2005	31.7 °C6 May 2005	13.1 °C1 January 2005	24.7 °C	1,645 mm	46
2004	31.0 °C1 July 2004	13.2 °C31 December 2004	24.7 °C	1,030 mm	33
2003	31.2 °C18 May 2003	14.5 °C7 January 2003	25.0 °C	1,341 mm	40
2002	31.1 °C23 May 2002	15.0 °C27 December 2002	25.0 °C	1,349 mm	25
2001	32.1 °C9 May 2001	13.5 °C23 December 2001	25.1 °C	1,669 mm	38
2000	30.8 °C11 June 2000	13.0 °C1 February 2000	24.8 °C	1,656 mm	26
1999	30.6 °C19 July 1999	9.4 °C24 December 1999	24.8 °C	1,237 mm	21
1998	31.8 °C23 May 1998	15.3 °C15 December 1998	25.6 °C	1,356 mm	59
1997	31.8 °C20 August 1997	14.6 °C10 January 1997	24.9 °C	1,327 mm	25
1996	30.4 °C10 August 1996	13.0 °C21 February 1996	24.5 °C	1,664 mm	14
1995	31.0 °C25 August 1995	13.1 °C6 January 1995	24.5 °C	1,657 mm	29
1994	32.3 °C4 May 1994	14.5 °C23 January 1994	24.9 °C	1,586 mm	15
1993	31.5 °C13 June 1993	11.5 °C29 January 1993	24.6 °C	1,198 mm	37
1992	31.5 °C31 May 1992	12.7 °C15 January 1992	24.5 °C	1,545 mm	25
1991	30.6 °C30 May 1991	12.7 °C29 December 1991	24.9 °C	1,202 mm	22
1990	31.2 °C17 August 1990	14.3 °C1 February 1990	24.9 °C	1,474 mm	30
1989	30.6 °C10 September 1989	14.3 °C14 January 1989	24.5 °C	1,768 mm	16
1988	31.5 °C24 May 1988	15.3 °C11 December 1988	24.8 °C	1,224 mm	33
1987	31.3 °C25 June 1987	13.2 °C7 December 1987	25.1 °C	1,321 mm	41
1986	30.8 °C1 July 1986	10.4 °C2 March 1986	24.5 °C	1,432 mm	25
1985	30.5 °C7 June 1985	15.0 °C23 December 1985	24.5 °C	1,452 mm	9
1984	30.3 °C24 June 1984	12.1 °C9 January 1984	24.2 °C	1,154 mm	5
1983	31.7 °C15 May 1983	12.3 °C25 January 1983	24.6 °C	1,522 mm	43
1982	31.1 °C1 June 1982	11.9 °C27 December 1982	24.7 °C	1,571 mm	28
1981	30.8 °C1 June 1981	12.9 °C21 December 1981	25.0 °C	1,600 mm	23
1980	30.9 °C25 May 1980	15.0 °C9 February 1980	25.0 °C	1,606 mm	32
1979	30.7 °C27 May 1979	14.1 °C31 January 1979	25.1 °C	1,405 mm	30
1978	30.7 °C15 June 1978	14.0 °C18 February 1978	24.8 °C	2,137 mm	17
1977	31.7 °C1 June 1977	13.9 °C5 February 1977	24.6 °C	1,194 mm	53
1976	30.8 °C17 June 1976	12.9 °C14 January 1976	24.3 °C	1,538 mm	20
1975	30.6 °C23 September 1975	10.5 °C30 December 1975	24.5 °C	2,027 mm	11
1974	30.5 °C11 June 1974	11.4 °C2 January 1974	24.3 °C	1,910 mm	15
1973	31.0 °C22 June 1973	13.2 °C26 December 1973	24.9 °C	2,337 mm	32
1972	31.5 °C24 May 1972	13.3 °C4 March 1972	24.5 °C	2,310 mm	16
1971	30.1 °C24 July 1971	13.6 °C8 January 1971	24.0 °C	2,122 mm	5
1970	31.6 °C10 May 1970	14.3 °C20 January 1970	24.8 °C	1,661 mm	28
1969	31.3 °C23 May 1969	12.1 °C6 February 1969	24.7 °C	1,121 mm	23
1968	30.8 °C27 May 1968	14.3 °C11 February 1968	24.6 °C	1,314 mm	33
1967	31.4 °C27 May 1967	10.5 °C17 January 1967	24.2 °C	1,564 mm	32
1966	30.5 °C13 May 1966	16.1 °C2 December 1966	25.3 °C	1,695 mm	9
1965	30.3 °C5 July 1965	14.3 °C18 December 1965	24.7 °C	1,579 mm	7
1964	30.5 °C22 May 1964	12.5 °C27 February 1964	24.4 °C	1,798 mm	10
1963	30.2 °C18 June 1963	10.2 °C15 January 1963	24.1 °C	1,645 mm	2
1962	30.9 °C29 May 1962	12.9 °C28 January 1962	24.2 °C	1,390 mm	14
1961	30.4 °C13 July 1961	11.6 °C18 January 1961	24.6 °C	1,695 mm	13
1960	30.6 °C10 August 1960	11.8 °C2 January 1960	24.6 °C	1,764 mm	6
1959	31.7 °C12 June 1959	13.2 °C11 January 1959	24.5 °C	1,354 mm	18
1958	31.2 °C23 May 1958	13.1 °C5 January 1958	24.3 °C	1,795 mm	11
1957	30.8 °C14 May 1957	11.7 °C12 February 1957	24.2 °C	1,467 mm	10
1956	30.1 °C12 June 1956	13.1 °C9 January 1956	24.1 °C	1,406 mm	1
1955	30.4 °C24 September 1955	10.1 °C12 January 1955	24.1 °C	1,288 mm	1
1954	30.9 °C20 June 1954	14.0 °C16 December 1954	24.8 °C	1,243 mm	17
1953	30.2 °C10 June 1953	15.0 °C7 January 1953	25.0 °C	1,389 mm	7
1952	31.0 °C6 June 1952	14.0 °C11 December 1952	25.0 °C	1,537 mm	27
1951	30.3 °C15 July 1951	14.5 °C14 January 1951	24.8 °C	1,594 mm	9
1950	30.7 °C20 May 1950	15.9 °C7 January 1950	24.8 °C	1,308 mm	7
1949	31.6 °C15 June 1949	12.8 °C9 January 1949	24.6 °C	945 mm	18
1948	31.0 °C28 June 1948	14.3 °C2 January 1948	24.4 °C	1,080 mm	32
1947	30.4 °C10 June 1947	14.3 °C20 December 1947	24.3 °C	946 mm	4
1946	30.8 °C30 July 1946	12.7 °C7 January 1946	24.7 °C	1,136 mm	23
1945	30.0 °C1 August 1945	12.8 °C16 January 1945	24.1 °C	1,190 mm	1
1944	30.0 °C24 July 1944	12.5 °C20 December 1944	24.3 °C	1,180 mm	1
1943	30.6 °C30 May 1943	13.5 °C12 January 1943	23.7 °C	815 mm	8
1942	30.3 °C26 May 1942	13.8 °C14 December 1942	24.3 °C	1,319 mm	3
1941	29.8 °C27 June 1941	15.8 °C1 February 1941	24.8 °C	1,653 mm	0
1940	29.5 °C14 August 1940	12.6 °C2 January 1940	24.0 °C	1,776 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

27.2 °C

+0.5 °C

Hot days (≥ 30 °C)

62 d/yr

+31

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1839 mm

+332 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	22.7 °C	-0.1 °C	2 mm	-10 mm
Feb	23.5 °C	+0.1 °C	1 mm	-13 mm
Mar	25.1 °C	-0.1 °C	10 mm	-14 mm
Apr	27.6 °C	+0.3 °C	22 mm	-31 mm
May	29.7 °C	+0.7 °C	128 mm	-24 mm
Jun	30.1 °C	+0.7 °C	244 mm	+20 mm
Jul	29.7 °C	+0.5 °C	266 mm	+32 mm
Aug	29.6 °C	+0.6 °C	429 mm	+151 mm
Sep	29.4 °C	+0.8 °C	365 mm	+109 mm
Oct	27.9 °C	+0.4 °C	303 mm	+118 mm
Nov	25.8 °C	-0.1 °C	62 mm	+9 mm
Dec	25.1 °C	+1.5 °C	8 mm	-16 mm

The year's extremes

Hottest day

31.5 °C

2 Jun 2025

Coldest day

13.9 °C

12 Jan 2025

Wettest day

140.5 mm

25 Aug 2025

Windiest day

59.9 km/h

25 Aug 2025

Strongest gust

108.4 km/h

28 Sep 2025

Hottest feels-like

39.4 °C

13 Aug 2025

Coldest feels-like

10.6 °C

12 Jan 2025

Sunniest day

12.8 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 Sanya?

Sanya has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.7 °C and it receives 1,507 mm of precipitation per year.

What is the hottest day ever recorded in Sanya?

The hottest day measured in Sanya between 1940 and 2025 was 21 May 2020, reaching 32.7 °C.

What is the coldest day in Sanya?

The coldest day measured in Sanya between 1940 and 2025 was 25 January 2016, at 9.2 °C.

Does it snow in Sanya?

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

Has the climate of Sanya warmed?

Yes: Sanya warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Sanya?

The wettest day measured in Sanya between 1940 and 2025 was 10 August 1978, with 239 mm of rain in 24 hours.

What was the windiest day in Sanya?

The windiest day measured in Sanya between 1940 and 2025 was 10 November 2013, with winds reaching 84.1 km/h.

What is the warmest month in Sanya?

The warmest month in Sanya is June (27.8 °C on average); the coldest is January (20.3 °C).

How much does it rain in Sanya?

Sanya receives on average 1,507 mm of precipitation per year, spread over about 167 rainy days.

Is it sunny in Sanya?

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

Are there tropical nights in Sanya?

Yes: Sanya has on average 292 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Sanya?

In Sanya, between 1940 and 2025, the highest apparent temperature reached 41.0 °C on 24 May 2017, and the lowest was 4.6 °C on 25 January 2016.

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