January · China
Best time to visit Sanya in January Weather, crowds & prices
Weather in Sanya in January
Average temperature 19°C, 23 mm of rain, about 12 days with 6+ hours of sunshine and 81% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
January score
7.1/10
Ranked #4 of 12 months
- Avg temp
- 19°C
- Rainfall
- 23 mm
- Humidity
- 81%
- Days with 6h+ sun
- 12
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
January in Sanya scores 7.1/10 for beach and coastal travel - an above-average month (#4 of 12). Expect around 19°C, 23 mm of rain, and roughly 12 days with 6+ hours of sunshine this month.
Tropical island beach paradise on Hainan Island, China's Hawaii.
January in Sanya — reliably good (4th best month)
Temperatures hover around 19°C (66°F) — the kind of month where neither heat nor cold forces the schedule.
With around 23 mm of rain, any showers tend to pass through rather than settle in; about 12 days with 6+ hours of sunshine and 11 hours of daylight fill the rest.
That is 7.1/10 on the same scale — 4th of 12 months, versus 9.5/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening.
Expect mid-season pricing, and crowds are moderate.
If your dates are flexible, March is materially better in Sanya — 2.4 points higher on the same scale.
Frequently asked
- What is the weather like in Sanya in January?
- In January, Sanya averages 19°C, 23 mm of rain, and about 12 days with 6+ hours of sunshine. Its climate-comfort score is 7.1/10.
- Is January a good time to visit Sanya?
- January earns a 7.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Sanya in January?
- Expect about 23 mm of rain in January. Average humidity is 81% and there are about 12 days with 6+ hours of sunshine.
Curated in Sanya
Tickets & experiences
Things to do in Sanya
Sanya, China. Live activities and tours from GetYourGuide, matched to this destination.