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Sanya weather

Hainan · 1,031,396 inhabitants · Friday, October 30 · updated 00:56

Air: Good Moderate storm risk · Today, Sun, Mon

25°

Rain showers

Feels like 35°C

Wind

12 km/h

Gusts

24 km/h

Humidity

90 %

Pressure

1017 hPa

Clouds

31 %

Storm

Rise 06:40 Set 18:10 Day 11 h 30 min UV 8 · Very high

Morning, afternoon, evening

Trend

Night

Rain showers

26°24°

Feels like 36°

Wind ↑ ENE 19 km/h

Humidity 88 %

💧 0.7 mm

Morning

Rain showers

29°26°

Feels like 39°

Wind ↑ ENE 18 km/h

Gusts 28 km/h

Humidity 66 %

💧 0.2 mm

⚡ storm

Afternoon

Rain showers

28°

Feels like 39°

Wind ↑ E 20 km/h

Humidity 76 %

💧 0.3 mm

⚡ storm

Evening

Mainly clear

27°24°

Feels like 37°

Wind ↑ ENE 18 km/h

Gusts 26 km/h

Humidity 80 %

08:00

26°

0.2mm

ENE 18

11:00

29°

E 14

14:00

28°

0.3mm

E 20

17:00

28°

E 17

20:00

27°

ENE 18

23:00

24°

NE 10

02:00

25°

ENE 14

05:00

23°

NE 9

Sanya forecast in charts · next 7 days

The week ahead: highs and lows

▲ This week runs +1.9° warmer than usual

Highs Lows Usual for the season (1991–2020 average)

Hourly detail

Temperature (°C) Rain (mm) Wind (km/h)

Sanya climate: what a normal year looks like

The hottest stretch is June, when afternoons average 30 °C; the coldest is January, when nights average 15 °C.

Afternoons reach 30 °C or more in May, June and August; the typical peak is 30 °C in June.

A normal year brings roughly 1,640 mm of rain — more than 80% of the towns of 20,000+ people we compared it with.

Forecast highs for the coming week average 29 °C, 1 °C warmer than a normal October (28 °C).

30-year averages (1991–2020)
Month	Typical high	Typical low	Rainfall
Jan	23 °C	15 °C	17 mm
Feb	24 °C	17 °C	21 mm
Mar	26 °C	19 °C	35 mm
Apr	28 °C	22 °C	88 mm
May	30 °C	24 °C	189 mm
Jun	30 °C	25 °C	233 mm
Jul	30 °C	24 °C	278 mm
Aug	30 °C	24 °C	284 mm
Sep	29 °C	23 °C	259 mm
Oct	28 °C	22 °C	161 mm
Nov	26 °C	20 °C	55 mm
Dec	24 °C	17 °C	26 mm
Whole year	27 °C	21 °C	1,640 mm

Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 18.25° N, 109.51° E, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.

Air you breathe in Sanya: pollution and pollen

1/6

Good

European Air Quality Index (EAQI), from Copernicus CAMS

PM2.55µg/m³

PM107µg/m³

Copernicus CAMS model, updated several times a day.

Rain radar around Sanya

Rain observed over the last two hours by official weather radars around Sanya, followed by the radar forecast for the next hour where the weather service provides one.

Rain radar Last two hours, then forecast where available · drag the timeline

No open weather radar covers Sanya yet: the map shows our hour-by-hour rain forecast (ICON, GFS).

Moon over Sanya

Waning gibbous

79 % illuminated · 19.3 days

Rise 18:51 Set 07:45

Sat 31/10 69%

Sun 1/11 59%

Mon 2/11 49% Last quarter

Tue 3/11 38%

Wed 4/11 28%

Thu 5/11 19%

Fri 6/11 12%

Sat 7/11 6%

Sun 8/11 2%

Mon 9/11 0%

Tue 10/11 1% New moon

Wed 11/11 3%

Moonrise and moonset in local time (Asia/Shanghai); phase and lit fraction from a synodic calculation.

Look up a past day in Sanya

Curious about the weather in Sanya on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.

Sanya weather at a glance

This page gathers everything about the weather in Sanya, Hainan: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “rain showers”, it is 25 °C (feels like 35 °C) and the wind blows at 12 km/h.

Expected range today: 23 °C to 29 °C and a dry sky; keep an eye on thunderstorms. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.

Other big cities nearby

Sanya weather data for developers

Use the Sanya forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.

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Where does this forecast come from? Our engine, checked every day against 1125 weather stations