Haikou climate
Haikou (Yunnan, China) has a subtropical highland (dry winter) climate (Köppen Cwb). The average temperature over the year is 16 °C61 °F, and about 828 mm33 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Haikou climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 1559 | 235 | 847 | 200.8 | 5 |
| Feb | 1865 | 438 | 1152 | 80.3 | 1 |
| Mar | 2171 | 744 | 1458 | 150.6 | 0 |
| Apr | 2576 | 1151 | 1864 | 281.1 | 0 |
| May | 2780 | 1457 | 2068 | 773.0 | 0 |
| Jun | 2781 | 1661 | 2271 | 1445.7 | 0 |
| Jul | 2680 | 1661 | 2170 | 1777.0 | 0 |
| Aug | 2679 | 1660 | 2170 | 1556.1 | 0 |
| Sep | 2577 | 1457 | 2067 | 1034.0 | 0 |
| Oct | 2272 | 1152 | 1762 | 682.7 | 0 |
| Nov | 1966 | 643 | 1254 | 210.8 | 0 |
| Dec | 1559 | 337 | 948 | 120.5 | 4 |
| Year | 2781 | 235 | 1661 | 82833 | 10 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 74% | 38% | 3.9 | 10:45 |
| Feb | 66% | 33% | 4.9 | 11:18 |
| Mar | 61% | 41% | 5.3 | 11:57 |
| Apr | 60% | 50% | 5.7 | 12:43 |
| May | 64% | 64% | 5.5 | 13:20 |
| Jun | 72% | 84% | 4.8 | 13:40 |
| Jul | 75% | 89% | 4.4 | 13:32 |
| Aug | 76% | 83% | 4.5 | 12:00 |
| Sep | 76% | 76% | 4.0 | 12:16 |
| Oct | 78% | 67% | 3.6 | 11:32 |
| Nov | 76% | 43% | 3.8 | 10:54 |
| Dec | 78% | 45% | 3.4 | 10:36 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Haikou is like
The warmest month is June, with an average high of 27 °C81 °F and a low of 16 °C61 °F. The coldest is January, when highs average 15 °C59 °F and lows 2 °C35 °F. There is a clear seasonal cycle, with 13.2 °C23.7 °F between the average temperature of the warmest and the coolest month.
Annual precipitation is moderate at about 828 mm33 in. The wettest three-month stretch is June–August, which brings 57% of the annual total. Months with less than 20 mm0.8 in on average: February and March and December. The wettest month is July (177 mm7.0 in), the driest is February (8 mm0.3 in).
Relative humidity ranges from 60% in April to 78% in October. The clearest skies (lowest average cloud amount, 33%) are typical of February. Average wind speed near the ground ranges from 7 km/h (4 mph) in August to 12 km/h (7 mph) in March. Daylight lasts from about 10.6 hours in December to 13.7 hours in June.
Best time to visit Haikou
Based on these averages, the most comfortable months for sightseeing and outdoor activities are March–May and October and November: average highs of 19 °C66 °F to 27 °C80 °F with 15 mm0.6 in to 77 mm3.0 in of precipitation per month.
The most challenging month is July, which is very wet (177 mm7.0 in) and humid (75% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Haikou
- Winter (December–February) — highs 1559 to 18 °C65 °F, lows 235 to 4 °C38 °F, about 14 mm0.5 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 2171 to 27 °C80 °F, lows 744 to 14 °C57 °F, about 40 mm1.6 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 2679 to 27 °C81 °F, lows around 16 °C60 °F, about 159 mm6.2 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Autumn (September–November) — highs 1966 to 25 °C77 °F, lows 643 to 14 °C57 °F, about 64 mm2.5 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
How Haikou compares
Compared with Kunming, about 32 km to the northeast, Haikou has practically the same average temperature and receives a similar amount of precipitation.
Of the 547 places in China covered by World Climates, Haikou is the 251st warmest by annual mean temperature and the 295th wettest by annual precipitation. See all of them on the China climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Queenstown (South Africa, Cfb), Maseru (Lesotho, Cwa) and Botshabelo (South Africa, BSk).
The same NASA POWER grid cell also contains Anning (pop. 106,795). Their long-term averages in this dataset are essentially the same as for Haikou, so they do not have separate pages.
Nearby places
- Kunming 32 km · 16 °C61 °F · 828 mm33 in
- Yuxi 47 km · 18 °C64 °F · 796 mm31 in
- Chuxiong 108 km · 17 °C63 °F · 823 mm32 in
- Qujing 145 km · 16 °C60 °F · 912 mm36 in
- Jianshui 148 km · 16 °C61 °F · 832 mm33 in
- Mengzi 177 km · 19 °C66 °F · 980 mm39 in
- Xiangcheng 217 km · 16 °C60 °F · 841 mm33 in
- Panzhihua 219 km · 22 °C71 °F · 969 mm38 in
Frequently asked questions
What is the warmest month in Haikou?
June is the warmest month in Haikou, with an average high of 27 °C (81 °F) and an average low of 16 °C (61 °F).
What is the coldest month in Haikou?
January is the coldest month, with an average high of 15 °C (59 °F) and an average low of 2 °C (35 °F).
When does it rain the most in Haikou?
July is the wettest month with about 177 mm (7.0 in) of precipitation; February is the driest with about 8 mm (0.3 in).
What is the best time to visit Haikou?
Judging by long-term averages, the most comfortable months are March–May and October and November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 2,021 m, while Haikou lies at about 1,909 m. Temperatures on this page were therefore adjusted by +0.7 °C1.3 °F using the standard lapse rate of 6.5 °C per 1,000 m.