WanderWhen

Hong Kong weather in September

September is a challenging month to visit Hong Kong — consider November–February instead. Expect highs around 30°C, lows near 26°C, and about 22.7 days with rain.

4.3 · Poortravel score for September
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg high
30°C
Avg low
26°C
Rainfall
313 mm
Rain days
22.7
Sunshine
9.1 h/day
Daylight
12.1 h

What to pack for Hong Kong in September

  • light, breathable clothing
  • sun protection (hat, SPF 50)
  • a compact umbrella or rain shell — rain is frequent
  • expect humid, sticky conditions

Humidity averages 86%; max daily wind around 16 km/h.

How September compares

January: 10.0/10 JFebruary: 9.2/10 FMarch: 7.9/10 MApril: 7.4/10 AMay: 6.0/10 MJune: 4.5/10 JJuly: 3.9/10 JAugust: 4.0/10 ASeptember: 4.3/10 SOctober: 8.2/10 ONovember: 9.9/10 NDecember: 10.0/10 D

Best months in Hong Kong: November–February. See the full best time to visit Hong Kong guide.

Hong Kong in September: the details

In September, Hong Kong sees average daytime highs of 30°C (86°F) and overnight lows of 26°C (78°F). Rainfall totals roughly 313 mm across 22.7 rainy days, and the sun shines about 9.1 hours per day with 12.1 hours of daylight mid-month. Relative humidity averages 86%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Hong Kong, Hong Kong (22.28, 114.17) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

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