Hainan
30.6°7-day forecastHainan
Life indicesfrom the province-wide high and low; see a city page for local values
Shorts and a light top; keep out of the midday sun
Big day–night swing, so carry an extra layer; Windy: a windproof outer layer helps
Dress for the mornings and evenings; avoid chills after sweating
Why: a sizeable day–night swing, very humid air
Limit midday sun; hat, sunglasses and sunscreen
Skip outdoor exercise today; train indoors
Why: oppressive heat, strong wind
OutlookNoticeably warmer from Tue, about 5° above today; mind the heat and drink water.
Computed by Tempscape from published banding schemes, for reference only; see the methodology page.
The province’s hottest day of 2026 so far was Chengmai at 41.5° on Apr 10; the coldest Ledong at 13.5° on Jan 25; 18 cities have seen 35°+ days, 733 city-days in total; the wettest city this month is Lingshui with 137 mm.
Temperature map19 monitored districts
City temperature ranking19 cities
Hainan's warmth builds amid widespread rain: 2026-11-12
Sansha is Hainan's warmest city by daytime high at 30.5°C, with cloudy conditions. Haikou is coolest at 24.6°C and has thunderstorms, leaving a 5.9°C spread between the highest and lowest city highs. Sanya remains near the warmer end at 29.5°C under cloudy skies. The contrast is therefore between warmer and less warm daytime conditions, rather than between warmth and cold. The provincial low is 19.8°C, below the daytime temperatures across the highlighted cities.
Rain extends across much of the province, including Baisha, Qiongzhong and Lingshui. Thunderstorms also feature in Danzhou, so the wet conditions are not confined to the coolest city. The seven-day outlook warms by about 4.5°C and reaches a peak of 35°C, with its lowest high at 30.5°C. Light clothing is appropriate for the warm afternoons, with a light extra layer for cooler hours. Keep rainwear available when heading out in the wetter areas.
Compiled daily by Tempscape from the day’s temperature readings; not an official forecast or warning.
City travel guides6 cities
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City-level temperature ranking for Hainan on 2026-11-12. The provincial high is about 30.6° and the low about 19.8°, with conditions mainly cloudy. This page compares 19 monitored cities with a seven-day trend. Updated daily; informational only, not an official warning.