AI-generatedSanya at a glance
- Best time
- Nov – Mar
- Warmest month
- Jun · 30°
- Warmest sea
- Jun · 29.1°
- Sunshine a year
- 1,800 h
- Rain a year
- 1,474 mm
- Climate
- Tropical
- Time zone
- UTC+8
- Elevation
- 1 m
Climate in Sanya
Sanya has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. June is the warmest month with average highs of 30 °C, while January is the coolest at 24 °C. With around 1,800 hours of sunshine a year, Sanya is moderately sunny; June is the sunniest month with 6.5 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Fair
Best time to visit: November – March
October is the peak of the typhoon season
Keep in mindFrequent rainStorm season
A typical day in October
- Morning, 08:00: about 26°
- Midday, 13:00: about 28°
- Afternoon, 16:00: about 28°
- Evening, 20:00: about 26°
- Night, 23:00: about 26°
06:3518:20
Warm enough for a T-shirt in the evening.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:21–07:04 · evening 17:51–18:34
- Blue hour
- Morning 06:13–06:21 · evening 18:34–18:42
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Sanya in October?
In October, Sanya is hot: daytime highs average 28 °C, and even at night it stays warm at around 25 °C. The sea averages 27.9 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 15 days, totalling 192 mm. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Sanya.
More details for October
- Daylight
- 11 h 45 min06:35 – 18:20
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 63 %on averageAll months
- Hot days
- 1 day30 °C or moreAll months
- Time zone
- UTC+8Asia/Shanghai
How the score comes together
- Temperatureweight 50 %85 %
- Sunshineweight 20 %28 %
- Few rainy daysweight 30 %19 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Sea temperature in Sanya
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 27.1 – 28.6 °C
Swimming season: All year
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Sanya ranges from 23.2 °C in February to 29.1 °C in June. At 20 °C and more, the sea is warm enough for swimming all year round.
From December to January the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in June, eight out of ten years were between 28.4 and 29.7 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 23.6° | 22.8° | 24.3° | pleasant |
| FebruaryFeb | 23.2° | 22.2° | 24.4° | pleasant |
| MarchMar | 24.3° | 23.2° | 25.0° | pleasant |
| AprilApr | 26.4° | 25.3° | 27.1° | warm |
| MayMay | 28.4° | 27.8° | 29.0° | warm |
| JuneJun | 29.1° | 28.4° | 29.7° | very warm |
| JulyJul | 28.9° | 28.3° | 29.6° | warm |
| AugustAug | 28.8° | 28.0° | 29.6° | warm |
| SeptemberSep | 28.9° | 28.3° | 29.8° | warm |
| OctoberOct | 27.9° | 27.1° | 28.6° | warm |
| NovemberNov | 26.6° | 26.1° | 27.3° | warm |
| DecemberDec | 25.0° | 24.3° | 25.8° | pleasant |
Sunshine hours in Sanya
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 4.7 of 11.8 hours of daylight in Sanya, 40 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Sanya
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 10 · very highStay in the shade around midday; SPF 50, clothing, hat and sunglasses.
The sun is strongest in May (UV 13).
Minutes until sunburn in October
- Very fair skin
- about 15 min
- Fair skin
- about 15 min
- Light brown skin
- about 25 min
- Olive skin
- about 30 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Sanya: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Sanya has about 15 rainy days with 192 mm of rain in total.
Wind and clouds in Sanya
How breezy and how cloudy Sanya is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Sanya typically peaks at 16 km/h during the day: Beaufort 3, light breeze.
Breezy months for windsurfing and kiting
The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 63 % of the sky over Sanya: variable cloud, with about 4.7 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Sanya
How often the day gets hot in Sanya (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Sanya has about 1 hot days, with an average daytime high of 28 °C: often muggy. The air feels warmer than the thermometer says: light, airy clothes and slow days help.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Sanya
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Pleasant 15–20°
- Warm 20–24°
- Hot 24° and more
- muggy month (10+ muggy days)
HotOctober: nights around 25°. Hot nights: air conditioning makes sleeping much easier. Muggy on about 30 days (dew point 18 °C or more).
The coolest nights are in January (19°), the warmest in June (27°). Tropical nights of 20 °C and more are the rule from February to December; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in January. It is muggy (dew point 18 °C or more) on about 304 days a year, mostly all year round.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 82 | 24° | 19° | 23.6° | 3.5 h | 3 | 13 |
| FebruaryFeb | 82 | 24° | 20° | 23.2° | 3.9 h | 4 | 17 |
| MarchMar | 78 | 26° | 22° | 24.3° | 4.4 h | 7 | 29 |
| AprilApr | 55 | 29° | 25° | 26.4° | 5.0 h | 15 | 79 |
| MayMay | 42 | 30° | 26° | 28.4° | 6.1 h | 23 | 175 |
| JuneJun | 41 | 30° | 27° | 29.1° | 6.5 h | 24 | 183 |
| JulyJul | 42 | 30° | 27° | 28.9° | 6.3 h | 24 | 229 |
| AugustAug | 42 | 30° | 27° | 28.8° | 6.0 h | 25 | 224 |
| SeptemberSep | 42 | 29° | 26° | 28.9° | 5.1 h | 23 | 249 |
| OctoberOct | 54 | 28° | 25° | 27.9° | 4.7 h | 15 | 192 |
| NovemberNov | 78 | 27° | 23° | 26.6° | 4.2 h | 7 | 59 |
| DecemberDec | 82 | 24° | 20° | 25.0° | 3.5 h | 3 | 24 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
18.25° N, 109.51° E · 1 m · Asia/Shanghai
Best time to visit Sanya
The best time to visit Sanya is from November to March. For a beach holiday with the sea above 21 °C, go from November to March. For sightseeing, day trips and hiking, conditions are most comfortable from November to March. Rain is most frequent from April to October; the wettest month is September with 249 mm.
Sanya through the seasons
How the weather changes over the seasons, with averages for each.
Sanya in the dry season
Nov – Mar
Excellent
- 24–27 °C by day
- Sea 25 °C
- 4 h of sun a day
- 24 rainy days in all
Sanya in the rainy season
Apr – Oct
Fair
- 28–30 °C by day
- Sea 28 °C
- 6 h of sun a day
- 149 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Sanya for you.
Your best months: December – February
Based on the climate averages; tap a month to see its details.
Compare two months in Sanya
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
January has the better holiday weather in Sanya: score 82 against 54. In January, days are 4 °C cooler than in October. The sea is 4 °C cooler in January. January has 12 fewer rainy days. The sun shines an hour less a day in January.
| Month | October | January |
|---|---|---|
| Weather score | 54 | 82better |
| Day high | 28° | 24° |
| Night low | 25° | 19° |
| Sea | 27.9° | 23.6° |
| Sunshine | 4.7 hbetter | 3.5 h |
| Rainy days | 15 | 3better |
| Rainfall | 192 mm | 13 mmbetter |
| Muggy days | 30 | 12better |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
Nov – Mar
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Nov – Mar
15–28 °C and not too much rain
Rainy months
Apr – Oct
12 or more rainy days
Sanya month by month
The typical weather for every month at a glance.
82January24° · Sea 24° · 4 h
In January, Sanya is warm: daytime highs average 24 °C, and nights cool down to about 19 °C. The sea averages 23.6 °C – pleasant for swimming. The sun is scarce, with only about 4 hours a day. Rain is rare: about 3 days bring 13 mm in total. All in all, January is an excellent month for a holiday in Sanya.
Sanya in January82February24° · Sea 23° · 4 h
In February, Sanya is warm: daytime highs average 24 °C, and nights cool down to about 20 °C. The sea averages 23.2 °C – pleasant for swimming. The sun is scarce, with only about 4 hours a day. Rain is rare: about 4 days bring 17 mm in total. The air is often humid and muggy. All in all, February is an excellent month for a holiday in Sanya.
Sanya in February78March26° · Sea 24° · 4 h
In March, Sanya is warm: daytime highs average 26 °C, and even at night it stays warm at around 22 °C. The sea averages 24.3 °C – pleasant for swimming. Expect around 4 hours of sunshine a day. Rain falls on about 7 days, adding up to 29 mm. The air is often humid and muggy. All in all, March is a good month for a holiday in Sanya.
Sanya in March55April29° · Sea 26° · 5 h
In April, Sanya is hot: daytime highs average 29 °C, and even at night it stays warm at around 25 °C. The sea averages 26.4 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 15 days, totalling 79 mm. The air is often humid and muggy. All in all, April is a so-so month for a holiday in Sanya.
Sanya in April42May30° · Sea 28° · 6 h
In May, Sanya is hot: daytime highs average 30 °C, and even at night it stays warm at around 26 °C. The sea averages 28.4 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. It is the rainy season: rain falls on about 23 days, totalling 175 mm. On about 16 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is a so-so month for a holiday in Sanya.
Sanya in May41June30° · Sea 29° · 7 h
In June, Sanya is hot: daytime highs average 30 °C, and even at night it stays warm at around 27 °C. The sea averages 29.1 °C – almost as warm as a bath. The sun shines for around 7 hours a day. It is the rainy season: rain falls on about 24 days, totalling 183 mm. On about 20 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, June is a so-so month for a holiday in Sanya.
Sanya in June42July30° · Sea 29° · 6 h
In July, Sanya is hot: daytime highs average 30 °C, and even at night it stays warm at around 27 °C. The sea averages 28.9 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. It is the rainy season: rain falls on about 24 days, totalling 229 mm. On about 17 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a so-so month for a holiday in Sanya.
Sanya in July42August30° · Sea 29° · 6 h
In August, Sanya is hot: daytime highs average 30 °C, and even at night it stays warm at around 27 °C. The sea averages 28.8 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. It is the rainy season: rain falls on about 25 days, totalling 224 mm. On about 16 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a so-so month for a holiday in Sanya.
Sanya in August42September29° · Sea 29° · 5 h
In September, Sanya is hot: daytime highs average 29 °C, and even at night it stays warm at around 26 °C. The sea averages 28.9 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 23 days, totalling 249 mm. On about 10 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a so-so month for a holiday in Sanya.
Sanya in September54October28° · Sea 28° · 5 h
In October, Sanya is hot: daytime highs average 28 °C, and even at night it stays warm at around 25 °C. The sea averages 27.9 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 15 days, totalling 192 mm. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Sanya.
Sanya in October78November27° · Sea 27° · 4 h
In November, Sanya is warm: daytime highs average 27 °C, and even at night it stays warm at around 23 °C. The sea averages 26.6 °C – lovely and warm for swimming. Expect around 4 hours of sunshine a day. Rain falls on about 7 days, adding up to 59 mm. The air is often humid and muggy. All in all, November is a good month for a holiday in Sanya.
Sanya in November82December24° · Sea 25° · 4 h
In December, Sanya is warm: daytime highs average 24 °C, and nights cool down to about 20 °C. The sea averages 25.0 °C – pleasant for swimming. The sun is scarce, with only about 4 hours a day. Rain is rare: about 3 days bring 24 mm in total. All in all, December is an excellent month for a holiday in Sanya.
Sanya in DecemberSanya compared
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Sanya vs. Haikou
In October Haikou has the better holiday weather (score 62 vs. 54). During the day Haikou is 1 °C cooler than Sanya. The sea in Haikou is 1 °C cooler.
| in October | Sanya | Haikou |
|---|---|---|
| Holiday score | 54 | 62 |
| Daytime high | 28° | 27° |
| Sea | 28° | 27° |
| Sunshine | 5 h | 5 h |
| Rainy days | 15 | 15 |
| Best time | Nov – Mar | Oct – Apr |
Through the year
China in October: the best places
In October, Sanya ranks 30 among the 31 nearest destinations in this country.
- Shantou27°26°89
- 2Jinan21°89
- 3Quanzhou27°25°88
- 4Xiamen28°25°84
- 5Kaifeng22°84
- 6Zhengzhou22°83
- 7Nanjing22°82
- 8Hefei23°81
- 30SanyaThis page28°28°54
Planning a trip to Sanya
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Sanya in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Sanya has its best school-holiday weather during the Christmas holidays (score 82) and its weakest during May half-term (score 42).
- 62
Easter holidays
Mar – Apr
Good
- 28 °C by day
- Sea 26 °C
- 4.8 h of sun a day
- 12 rainy days a month
Keep in mind: Frequent rain
- 42
May half-term
May – Jun
Fair
- 30 °C by day
- Sea 29 °C
- 6.2 h of sun a day
- 23 rainy days a month
Keep in mind: Frequent rain
- 42
Summer holidays
Jul – Aug
Fair
- 30 °C by day
- Sea 29 °C
- 6.1 h of sun a day
- 25 rainy days a month
Keep in mind: Frequent rain, Storm season
- 54
October half-term
Oct
Fair
- 28 °C by day
- Sea 28 °C
- 4.7 h of sun a day
- 15 rainy days a month
Keep in mind: Frequent rain, Storm season
- 82
Christmas holidays
Dec – Jan
ExcellentBest holidays
- 24 °C by day
- Sea 24 °C
- 3.5 h of sun a day
- 3 rainy days a month
Good for: Beach & swimming, Sightseeing & walks
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 12 h 15 min
- Distance
- 9,730 km
- Time zone
- UTC+8
- Jet lag
- About 7 days (7 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Storm season
Sanya lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Peak
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM); not a forecast.
Frequently asked questions about Sanya
When is the best time to visit Sanya?
The best time to visit Sanya is from November to March. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Sanya?
The sea temperature in Sanya ranges from 23.2 °C in February to 29.1 °C in June. At 20 °C and more, the sea is warm enough for swimming all year round.
Can you swim in Sanya in October?
Yes. In October the sea averages 27.9 °C – lovely and warm for swimming.
What is the warmest month in Sanya?
June is the warmest month, with average highs of 30 °C and nights around 27 °C. January is the coolest month at 24 °C.
When does it rain most in Sanya?
Rain is most frequent from April to October; the wettest month is September with 249 mm. The driest month is January with 13 mm.
How many hours of sunshine does Sanya get?
Sanya gets around 1,800 hours of sunshine a year. The sunniest month is June with 6.5 hours a day; in January there are 3.5 hours a day.
What time zone is Sanya in?
Sanya uses the time zone Asia/Shanghai, at UTC+8 all year.
How long is the flight from London to Sanya?
A nonstop flight from London to Sanya takes about 12 h 15 min, for a straight-line distance of about 9,730 km. Most routes need a change of planes, which adds time.
When is typhoon season in Sanya?
Sanya lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Sanya?
Sanya has its best school-holiday weather during the Christmas holidays (score 82) and its weakest during May half-term (score 42). Holiday ratings (0–100): Easter holidays 62, May half-term 42, Summer holidays 42, October half-term 54, Christmas holidays 82.
Near Sanya
Other destinations close by.
Places with a climate like Sanya
Destinations whose weather through the year is closest to Sanya's – good alternatives.