September could be a good time to visit Haikou, as the weather is generally fine. The average high temperature is around +30°C, and there are typically 2 sunny days in September. However, expect about 24 rainy days, and total monthly rainfall of approximately 215 mm. The weather is changeable so pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+30°C
Avg. max. temperature
+21°C
Min.
+34°C
Max.
215 mm
Total precipitation
83%
Avg. humidity
3 m/s
Avg. wind
2 ☀️
Sunny Days
3 ⛅️
Cloudy
24 🌦
Rainy
Our opinion: Haikou has OK weather in September.
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Average temperature in Haikou in September
Here are the expected maximum, average and minimum temperatures in Haikou for September based on the historical data.
Last Year
Historical Data
The expected average maximum temperature in September is +30°C with a maximum of +32°C and a minimum of +26°C.
The average maximum temperature goes down 17% by the end of the month, compared with the beginning of the month, from +32°C to +31°C.
Is Haikou warm or cold in September?
Haikou is typically warm in September.
Maximum temperatures go down compared to the previous month from +31°C to +30°C. The minimum temperature also goes down from +27°C to +26°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Haikou:
Climate in Haikou in September
Haikou weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+31°C
+30°C
+28°C
Min. temperature
+23°C
+21°C
+14°C
Max. temperature
+35°C
+34°C
+32°C
Rainfall
213 mm
215 mm
172 mm
Wind
2 m/s
3 m/s
4 m/s
Humidity
83%
83%
80%
Air pressure
1003 HPa
1007 HPa
1012 HPa
Sunny days
1
2
4
Cloudy days
4
3
7
Rainy days
24
24
20
Snowy days
0
0
0
September weather is still as ok as in August.It’s getting colder in September. From +31°C in the day, the average maximum temperature lowers to +30°C.Prepare for more rain. Average rainfall goes from 213 mm to 215 mm.Humidity levels don’t change as the month goes on, averaging around 83%.Winds are stronger in comparison to August, going up from 2 m/s to 3 m/s on average.The good news is there are likely to be more sunny days in September, from 1 to 2.
October brings much the same weather, it remains ok.
Wind speed in Haikou in September based on historical data.
Last Year
Historical Data
The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Haikou is gradually decreasing during September, going from 4 m/s to 2 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Haikou based on historical data.
Last Year
Historical Data
Total precipitation in September is about 230 mm, with a 77% chance of rain on a typical day. The maximum amount of rainfall per day is around 27 mm, which is moderate rain.September is a pretty wet month with over 23 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
September is one of the rainiest months in Haikou, here is a comparison with other months, total mm:
Haikou wettest month is September, where a typical day has a 80% chance of precipitation and 215 mm of rainfall per day. January, on the other hand, is the driest month with a mere 39% chance of precipitation and 28 mm of rainfall per day.
How was the weather last September in Haikou?
This is the weather in Haikou in September 2024:
1 September
☁️
+32°C
2 September
☁️
+30°C
3 September
☁️
+28°C
4 September
☁️
+30°C
5 September
☁️
+32°C
6 September
☁️
+32°C
7 September
🌧️
+31°C
8 September
🌧️
+29°C
9 September
🌧️
+28°C
10 September
🌧️
+28°C
11 September
☁️
+30°C
12 September
☁️
+30°C
13 September
☁️
+30°C
14 September
☁️
+30°C
15 September
🌧️
+30°C
16 September
☁️
+29°C
17 September
☁️
+29°C
18 September
🌧️
+30°C
19 September
☀️
+30°C
20 September
☀️
+31°C
21 September
☀️
+31°C
22 September
☀️
+31°C
23 September
🌧️
+29°C
24 September
🌧️
+29°C
25 September
🌧️
+28°C
26 September
🌧️
+28°C
27 September
☁️
+29°C
28 September
🌧️
+29°C
29 September
☁️
+30°C
30 September
☀️
+31°C
In September 2024 Haikou had 5 sunny days, 14 cloudy days, and 11 rainy days. The average maximum temperature was +30°C, with an absolute maximum of +32°C and a minimum of +28°C. The average humidity was 86%, with a maximum of 94% and a minimum of 67%. The average wind speed was 3 m/s, with a maximum of 8 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change over Years
This is how Haikou climate have been changing during last 43 years period.
The climate in Haikou in September has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+25°C) and the highest in 2019 (+28°C). The driest year was 1991 with only 799 mm of rainfall, and the wettest year was 1982 with 1827 mm.
FAQ
Frequently asked questions about the weather in Haikou in September:
Is September a good time to visit Haikou?
It’s always a good time to visit Haikou, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Haikou in September?
September is warm in Haikou. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.
Is Haikou rainy in September?
Haikou is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Haikou in September?
Usually, it’s not very sunny in Haikou in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Haikou, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
