Our verdict
The best time to visit Haikou is September
In summer, temperatures can reach as high as 34℃ (94℉) in the middle of the day. The coldest it usually gets in winter-time in Haikou is around 15℃ (59℉).
If you’re keen to work on your tan in Haikou, you’re most likely get the longest days between sun-up and sun-down around June. The wet season in Haikou usually falls during the months surrounding October each year. It’s not uncommon to get some decent rainfall or light showers during this time, but on some days the weather tends to be fine for a majority of the day, with only a few drops of rain falling from a passing shower.
Continue reading to find out more about when to visit Haikou, including the climate, seasonal info, what to pack, FAQs, and the best tools to help you plan and book your next vacation.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
Haikou seasons
Before you continue, it’s important to know when the seasons are in Haikou as they might be different to yours depending on where in the world you’re travelling from. Haikou is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Haikou
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Haikou for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Haikou climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Haikou for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Haikou in January
- Average temperature: 19℃ (67℉)
- Average high temperature: 21℃ (70℉)
- Average low temperature: 18℃ (64℉)
- Average humidity: 82%
- Average sunny days: 10 days
- Average rainfall: 18mm (1") over 15 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Haikou in January, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Haikou in February
- Average temperature: 21℃ (69℉)
- Average high temperature: 23℃ (73℉)
- Average low temperature: 19℃ (65℉)
- Average humidity: 82%
- Average sunny days: 12 days
- Average rainfall: 15mm (1") over 12 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Haikou in February, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Haikou in March
- Average temperature: 23℃ (74℉)
- Average high temperature: 26℃ (79℉)
- Average low temperature: 21℃ (70℉)
- Average humidity: 81%
- Average sunny days: 15 days
- Average rainfall: 26mm (1") over 14 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Haikou in March, make sure you pack t-shirts and light clothing.
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Haikou in April
- Average temperature: 26℃ (78℉)
- Average high temperature: 29℃ (83℉)
- Average low temperature: 23℃ (74℉)
- Average humidity: 82%
- Average sunny days: 10 days
- Average rainfall: 54mm (2") over 17 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Haikou in April, make sure you pack t-shirts and light clothing.
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Haikou in May
- Average temperature: 29℃ (83℉)
- Average high temperature: 31℃ (89℉)
- Average low temperature: 26℃ (78℉)
- Average humidity: 80%
- Average sunny days: 12 days
- Average rainfall: 87mm (3") over 17 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Haikou in May, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Haikou in June
- Average temperature: 29℃ (85℉)
- Average high temperature: 32℃ (90℉)
- Average low temperature: 27℃ (80℉)
- Average humidity: 79%
- Average sunny days: 11 days
- Average rainfall: 79mm (3") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Haikou in June, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Haikou in July
- Average temperature: 29℃ (84℉)
- Average high temperature: 32℃ (89℉)
- Average low temperature: 27℃ (80℉)
- Average humidity: 79%
- Average sunny days: 8 days
- Average rainfall: 99mm (4") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Haikou in July, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Haikou in August
- Average temperature: 29℃ (84℉)
- Average high temperature: 32℃ (89℉)
- Average low temperature: 27℃ (80℉)
- Average humidity: 80%
- Average sunny days: 8 days
- Average rainfall: 125mm (5") over 21 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Haikou in August, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Haikou in September
- Average temperature: 28℃ (83℉)
- Average high temperature: 30℃ (87℉)
- Average low temperature: 26℃ (79℉)
- Average humidity: 80%
- Average sunny days: 10 days
- Average rainfall: 115mm (5") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Haikou in September, make sure you pack t-shirts and shorts.. It stays warm all day and night.
Haikou in October
- Average temperature: 26℃ (79℉)
- Average high temperature: 28℃ (83℉)
- Average low temperature: 25℃ (76℉)
- Average humidity: 78%
- Average sunny days: 10 days
- Average rainfall: 127mm (5") over 19 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Haikou in October, make sure you pack t-shirts and light clothing.
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Haikou in November
- Average temperature: 24℃ (75℉)
- Average high temperature: 26℃ (78℉)
- Average low temperature: 22℃ (72℉)
- Average humidity: 80%
- Average sunny days: 8 days
- Average rainfall: 36mm (1") over 16 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Haikou in November, make sure you pack t-shirts and light clothing.
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Haikou in December
- Average temperature: 20℃ (69℉)
- Average high temperature: 22℃ (72℉)
- Average low temperature: 19℃ (66℉)
- Average humidity: 78%
- Average sunny days: 12 days
- Average rainfall: 20mm (1") over 14 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Haikou in December, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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