Temperature
Hot by day, warm at night.
88°Ftypical September high
Typical range
September climate
September in Sanya
China · East Asia
Typhoon risk near peak and humid air are the main limitations.
Wet but workable
Daytime high
88°F
Lows around 77°F
Rain
Rain most days
Sun
8.5 h/day
Air feel
Very humid
Sea temp
85°F
Great for swimming
When to visit
Month-by-month fit
Best
Precipitation
It rains on most days. About 25 wet days, more than in most months.
83%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
8.5 hSeptember sunshine
Heat & humidity by month
Very humid air is a major factor this month.
86%September Heat feel
Easy airWarm airHumid airVery humid air
Hourly temperature pattern
In September, afternoons feel about 96° and nights feel near 87°.
ComfortableWarmHotSwelteringNight hours
Clear sky
Mostly cloudy skies this month.
23%September Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in September.
4 mphSeptember Calm
Sea temperature
85°FSeptember sea temp
More detailIncludes daypart comfort
Typical September day
September late afternoons are around 86°F, easing to about 82°F in early evening.
Avg temp Typical range
Morning83°F
Feels 92°F
Rain36%
Cloud72%
Humid airVery high
Sun intensityModerate
Midday87°F
Feels 96°F
Rain67%
Cloud80%
Humid airVery high
Sun intensityStrong
Late afternoon86°F
Feels 95°F
Rain71%
Cloud84%
Humid airVery high
Sun intensityModerate
Early evening81°F
Feels 91°F
Rain29%
Cloud79%
Humid airVery high
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 76 | 62 | 0.5 | 3 | 8.8 | 82 | 74 |
| Feb | 78 | 65 | 0.6 | 4 | 9.0 | 83 | 73 |
| Mar | 82 | 70 | 1.1 | 6 | 10.1 | 84 | 75 |
| Apr | 86 | 75 | 3.3 | 14 | 10.7 | 84 | 79 |
| May | 90 | 78 | 7.0 | 22 | 10.3 | 85 | 83 |
| Jun | 90 | 80 | 8.1 | 24 | 9.9 | 85 | 85 |
| Jul | 89 | 79 | 10.3 | 25 | 9.5 | 86 | 85 |
| Aug | 89 | 79 | 10.6 | 27 | 9.0 | 87 | 85 |
| Sep | 88 | 77 | 10.3 | 25 | 8.5 | 86 | 85 |
| Oct | 86 | 74 | 6.9 | 16 | 9.3 | 84 | 83 |
| Nov | 83 | 70 | 2.1 | 7 | 9.6 | 82 | 80 |
| Dec | 77 | 64 | 0.9 | 3 | 9.0 | 80 | 76 |
Similar climates
Similar
Similar travel styleBridgetownBarbadosSimilar travel styleCancúnMexicoSimilar travel styleNassauBahamasSimilar travel stylePunta CanaDominican Republic
Want a side-by-side climate view? Compare Sanya with Bridgetown.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology