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Weather in Sai Kung for September 2025

Your guide to Sai Kung weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Thunderstorms Warning - See hour by hour.

    • Temperatures

  • Until now, September 2025 in Sai Kung has been nearly identical to the historical average, with a temperature of 29.3 °C (showing only a slight deviation of 0.3 °C).

  • The forecast for the next days in Sai Kung predicts temperatures to be around 29 °C, close to the historical average.

  • In general, the average temperature in Sai Kung at the beginning of September is 29.7 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 28.7 °C by the end of September.

    • Rain 🌧️

  • Sai Kung experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 477.1 mm.

Average dry days
2
Dry days
Average rainy days
28
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/26°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Sai Kung Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light rain shower
30°
2
Torrential rain shower
30°
3
Moderate or heavy rain shower
30°
4
Light rain shower
31°
5
Patchy rain possible
30°
6
Light rain shower
28°
7
Light rain shower
29°
8
Light rain shower
27°
9
Light rain shower
28°
10
Moderate or heavy rain shower
28°
11
Patchy rain possible
28°
12
Patchy rain possible
29°
13
Patchy rain possible
29°
14
Cloudy
29°
15
Cloudy
29°
16
Patchy light drizzle
29°
17
Weather Alert Patchy rain possible
30°
18
Weather Alert Patchy rain possible
30°
19
Moderate rain
31°
20
Moderate rain
31°
21
Heavy rain
28°
22
Moderate rain
28°
23
Sunny
31°
24
Heavy rain
28°
25
Moderate rain
28°
26
Moderate rain
28°
27
Patchy rain possible
29°
28
Patchy rain possible
29°
29
Thundery outbreaks possible
29°
30
Patchy rain possible
30°

Temperatures trend during September in Sai Kung

See the weather trend as well as the moving average line

September weather in Sai Kung day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 30° /25° 68 mm 7
2 Sept. Torrential rain shower
Torrential rain shower
 30° /26° 54.7 mm 7
3 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /26° 10.9 mm 7
4 Sept. Light rain shower
Light rain shower
 31° /27° 2.4 mm 7
5 Sept. Patchy rain possible
Patchy rain possible
 30° /27° 4.1 mm 7
6 Sept. Light rain shower
Light rain shower
 28° /25° 27 mm 6
7 Sept. Light rain shower
Light rain shower
 29° /26° 23.6 mm 6
8 Sept. Light rain shower
Light rain shower
 27° /25° 37.2 mm 6
9 Sept. Light rain shower
Light rain shower
 28° /25° 22.6 mm 6
10 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /25° 31 mm 6
11 Sept. Patchy rain possible
Patchy rain possible
 28° /26° 34.7 mm 6
12 Sept. Patchy rain possible
Patchy rain possible
 29° /25° 0.1 mm 6
13 Sept. Patchy rain possible
Patchy rain possible
 29° /26° 1.4 mm 7
14 Sept. Cloudy
Cloudy
 29° /26° 3.9 mm 6
15 Sept. Cloudy
Cloudy
 29° /25° 2.1 mm 6
16 Sept. Patchy light drizzle
Patchy light drizzle
 29° /26° 2 mm 7
17 Sept. Patchy rain possible
Patchy rain possible
 30° /28° 0.4 mm 2.6
18 Sept. Patchy rain possible
Patchy rain possible
 30° /28° 4.1 mm 2.4
19 Sept. Moderate rain
Moderate rain
 31° /28° 10.9 mm 2.2
20 Sept. Moderate rain
Moderate rain
 31° /28° 11.9 mm 2.6
21 Sept. Heavy rain
Heavy rain
 28° /25° 26.1 mm 6
22 Sept. Moderate rain
Moderate rain
 28° /27° 5.1 mm 6
23 Sept. Sunny
Sunny
 31° /28° 0 mm 7
24 Sept. Heavy rain
Heavy rain
 28° /25° 35.2 mm 6
25 Sept. Moderate rain
Moderate rain
 28° /27° 6.8 mm 6
26 Sept. Moderate rain
Moderate rain
 28° /27° 6.2 mm 6
27 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 3 mm 6
28 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 1 mm 6
29 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 29° /27° 0.1 mm 6
30 Sept. Patchy rain possible
Patchy rain possible
 30° /26° 1.6 mm 7
Next
Important Notice
Our weather forecast for Sai Kung in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Sai Kung forecast closer to your planned date for the most up-to-date weather information.
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Sai Kung in September - FAQ

What are the expected maximum and minimum temperatures in Sai Kung during September?
During September, expect a variety of temperatures with highs around 29° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Sai Kung during September?
Significant rainfall exceeding 477.1 mm is expected in Sai Kung during September, occurring over more than 28 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Sai Kung during September?
The average wind speed in Sai Kung during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Sai Kung

Explore the daily rainfall trends and prepare for Sai Kungs September weather 💧

UV exposure in Sai Kung during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Sai Kung?

Get accurate weather forecasts for Sai Kung, located at latitude 22.328 and longitude 114.25. Stay updated with localized weather information tailored for Sai Kung.

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