Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Haikou is from March, April, November. — consistent weather climate
🌧Rainy
| Score | 55 | 68 | 90 | 87 | 71 | 48 | 46 | 44 | 72 | 76 | 79 | 63 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Cold | Mild | Mild | Pleasant | Humid | Rainy | Rainy | Rainy | Rainy | Cool & rainy | Mild | Cold |
| Temperature | 6–15°C | 7–17°C | 11–22°C | 14–24°C | 16–25°C | 17–25°C | 17–24°C | 17–24°C | 16–23°C | 13–20°C | 10–18°C | 7–15°C |
| Feels like | 3–11°C | 4–13°C | 9–18°C | 12–21°C | 15–25°C | 18–26°C | 18–26°C | 18–26°C | 17–24°C | 13–20°C | 8–16°C | 5–12°C |
| Precipitation | 45mm 7 days | 20mm 5 days | 25mm 5 days | 57mm 8 days | 101mm 13 days | 217mm 23 days | 219mm 27 days | 265mm 30 days | 151mm 24 days | 110mm 18 days | 39mm 8 days | 23mm 6 days |
| Sunshine | 8.9h ☀︎ 82% | 9.3h ☀︎ 82% | 10.6h ☀︎ 88% | 10.7h ☀︎ 84% | 10.6h ☀︎ 80% | 7.2h ☀︎ 53% | 6.5h ☀︎ 48% | 7.7h ☀︎ 59% | 7.9h ☀︎ 64% | 7.9h ☀︎ 68% | 8.3h ☀︎ 76% | 7.8h ☀︎ 73% |
| Wind | SW · 20 km/h | SW · 23 km/h | SW · 25 km/h | SW · 24 km/h | SW · 20 km/h | SW · 17 km/h | S · 15 km/h | SE · 14 km/h | SE · 14 km/h | S · 15 km/h | SW · 16 km/h | SW · 18 km/h |
| Humidity (%) | 72% | 62% | 50% | 54% | 62% | 78% | 81% | 82% | 81% | 81% | 75% | 74% |
| Day length | 10.8h | 11.3h | 12.0h | 12.7h | 13.3h | 13.6h | 13.5h | 13.0h | 12.3h | 11.6h | 11.0h | 10.6h |
Haikou's biggest annual celebration fills the streets with coconut-themed lanterns, folk performances, and trade fairs a…
Mainland travelers rush to Haikou in early winter expecting a tropical heatwave, only to find cool, overcast sea winds; the real magic happens in March and April, when dry warmth arrives, the skies clear, and the winter crowds have gone home.
Sitting on the northern mouth of the Nandu River where the island looks back toward the mainland, Haikou has never been a glossy resort colony. It is a working port city with deep maritime roots, arcaded colonial trading alleys, and a rhythm dictated by the sea. For decades, travelers treated it merely as a transit point or arrived in the depths of December looking for an easy escape from freezing northern provinces. But Hainan's northern coast behaves very differently from its southern tip. Arrive in winter and you will find breezy, dim afternoons where a jacket is mandatory; wait until spring, and the city reveals why its relaxed, palm-fringed lifestyle is worth lingering for.
March is the finest moment of the year to be in Haikou, and April follows closely on its heels. While northern China is still shivering and the south is drowning in early humidity, Haikou settles into a state of atmospheric perfection. The damp grey skies of midwinter roll away, replaced by long, radiant days of crisp sunshine and comfortable sea breezes. The midday heat is warm enough for linen shirts and sandals along Holiday Beach, but mornings and evenings retain a gentle, refreshing temper that encourages endless wandering.
Because the winter holidaymakers disperse by late February, you get the city almost entirely to yourself. The restored colonial shophouses of Qilou Old Street—with their blend of Southeast Asian colonnades and southern Chinese plaster carvings—feel peaceful rather than overwhelmed. You can sit beneath the overhanging stone arches for hours with an iced local tea, watching elderly residents trade news and mopeds buzz through the back lanes without fighting tour groups.
In April, the island's signature culture takes center stage during the Hainan International Coconut Festival. Colorful lanterns, evening folk displays, and street markets celebrating every imaginable use of the coconut sweep through the central avenues and down to the waterfront. Even with the festival drawing festive energy into the downtown core, the town never feels claustrophobic. It remains relaxed, easy, and deeply livable.
By late May, the atmospheric dial turns decisively toward the tropical furnace. The open air thickens, and by June, moisture hangs in the streets like a wet fleece. When the summer rains arrive, they do not arrive politely; they break over the city in colossal, crashing squalls that turn gutters into rushing torrents within minutes. An afternoon can begin with searing white glare and end in a dramatic coastal downpour that pins you beneath a store awning for an hour.
Life does not stop during these wet months, but it retreats indoors during the afternoon. The wide green lawns of Evergreen Park, normally full of kite flyers and picnickers, sit sodden and silent under torrential showers. On Haidian Island, the university crowds drift indoors to air-conditioned halls while the tides churn the mouth of the Haidian River into choppy, slate-colored soup.
If you travel here between June and August, plan your days in split shifts. Dawn is often still and atmospheric along the water before the sky charges up with convection, and late evenings bring a welcome coastal breeze after the daily storms have broken the suffocating tension in the air. Just be prepared to yield to the weather, carry sandals that dry fast, and surrender any expectation of uninterrupted outdoor schedules.
September and October represent a steady transition out of the tropical deluge. The heavy downpours begin to taper into shorter, lighter showers, and the daytime heat relaxes into a comfortable, golden warmth. The sun is out for hours over the estuary, illuminating the vast waters where the Nandu River empties into the Qiongzhou Strait.
Walking through the older districts of Qiongshan during October brings an unmistakable sense of neighborhood calm. Banyan trees drop long root curtains over mossy stone steps, street vendors lay out freshly cut fruit, and the air smells of roasted sea salt and sweet tea. Tourism numbers start their seasonal climb, but the pace of the city remains unhurried and welcoming.
This is also an exceptional season for cycling the coastal promenades. The salt air feels clean rather than sticky, and the afternoon winds off the water keep exertion cool. While occasional squalls still brush past from the sea, they rarely linger long enough to dismantle a day's wandering.
November marks the sudden arrival of peak season, when hundreds of thousands of domestic visitors migrate south to escape the continental freeze. Downtown hotels fill up and promenade walkways become dense with sightseers. Yet winter in Haikou is rarely what uninitiated visitors imagine. Located on the northern side of the island, Haikou receives the full brunt of winter winds blowing straight across the water from the mainland. The result is not tropical sunshine, but a stubborn blanket of low, grey cloud and persistent, brisk breezes that hold daytime feels down to around 12 to 16 degrees.
It is certainly milder than the snowfields of the north, but it is far from sunbathing weather. Stepping onto Holiday Beach in January in shorts is a mistake you will make only once; the wind off the grey water cuts sharply through light clothing, and the sea is far too chilly for a comfortable swim. Locals pull on quilted jackets, windbreakers, and wool hats to ride their electric bikes along the coast.
If you come in winter, adjust your expectations. This is a season for eating hot bowls of pepper soup, exploring historic alleyways in a warm sweater, and appreciating the moody, windswept maritime character of the city. Just do not expect the tropical sun to warm your bones until the calendar flips into spring.