January 19° · ☂ 3 February 20° · ☂ 4 ★ March22° · ☂ 6 April 26° · ☂ 8 May 29° · ☂ 12 June 31° · ☂ 17 July 32° · ☂ 15 August 31° · ☂ 16 September 31° · ☂ 12 October 28° · ☂ 6 ★ November25° · ☂ 4 ★ December21° · ☂ 3 Hong Kong in August:very hot, rain every other day Hong Kong · Records from 2006 to 2025. Not a forecast.
Mean high 31° Hottest day 36.4° (2017)
Mean low 27° Coldest night 24.4° (2008)
Rain days 16 days 6-23 by year
Rainfall 416mm Daylight 13.2 → 12.6 h
Hong Kong's 12 months i Best: March, November and December
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Beach Poorfrequent rain and storm risk Sightseeing on foot Poorhot, frequent rain, muggy and storm risk
Humidity 84% 31 muggy days
Clear days 3 days 17 overcast days
Mean wind 9 km/h Rarely windy
Sea temperature 28.8° 27.7-29.6° by year (last 6)
Sunrise / sunset (15th) 06:01 / 18:56 Daylight 13.2 → 12.6 h
Hong Kong in August A wet month. When Typhoon Signal No. 8 goes up, public transport is sharply reduced or stops. You have to stay in until the signal comes down, so leave a spare day.
It was a hot month: 31°C by day and 27°C after dark. Daily swings were small, about 5°C, with no sudden drop at dusk. With 16 rain days on average, a wet day was rarely more than a few days away. It varied a lot from year to year. August 2011 had 6 rain days; 2018 had 23.
Highs topped 30°C on 24 days of the month on average. Mixing in indoor stops at midday made sense. Each rainy day brought about 27 mm, closer to downpours than drizzle.
Typhoons i 12 of the last 20 years had a tropical storm pass within 300 km this month.
Nuri (2008), 14 km away typhoon strength Pabuk (2007), 28 km away tropical storm Nida (2016), 31 km away typhoon strength 1 2 3 1 4 1 5 8 6 6 7 12 8 7 9 3 10 4 11 1 12
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
August 1 Sunday 1 rain in 9 of 20 yrs 9/20 32° 27° August 2 Monday 2 rain in 12 of 20 yrs 12/20 31° 27° August 3 Tuesday 3 rain in 9 of 20 yrs 9/20 31° 27° August 4 Wednesday 4 rain in 11 of 20 yrs 11/20 31° 27° August 5 Thursday 5 rain in 13 of 20 yrs 13/20 31° 27° August 6 Friday 6 rain in 9 of 20 yrs 9/20 31° 27° August 7 Saturday 7 rain in 7 of 20 yrs 7/20 32° 27° 1-7 rain on 50% of days 32° 27°
August 8 Sunday 8 rain in 5 of 20 yrs 5/20 32° 27° August 9 Monday 9 rain in 6 of 20 yrs 6/20 32° 27° August 10 Tuesday 10 rain in 11 of 20 yrs 11/20 31° 27° August 11 Wednesday 11 rain in 16 of 20 yrs 16/20 30° 27° August 12 Thursday 12 rain in 16 of 20 yrs 16/20 31° 27° August 13 Friday 13 rain in 13 of 20 yrs 13/20 31° 27° August 14 Saturday 14 rain in 14 of 20 yrs 14/20 31° 27° 8-14 rain on 58% of days 31° 27°
August 15 Sunday 15 rain in 11 of 20 yrs 11/20 31° 27° August 16 Monday 16 rain in 11 of 20 yrs 11/20 31° 27° August 17 Tuesday 17 rain in 13 of 20 yrs 13/20 31° 27° August 18 Wednesday 18 rain in 11 of 20 yrs 11/20 31° 26° August 19 Thursday 19 rain in 11 of 20 yrs 11/20 31° 27° August 20 Friday 20 rain in 9 of 20 yrs 9/20 31° 27° August 21 Saturday 21 rain in 7 of 20 yrs 7/20 32° 27° 15-21 rain on 52% of days 31° 27°
August 22 Sunday 22 rain in 5 of 20 yrs 5/20 32° 27° August 23 Monday 23 rain in 10 of 20 yrs 10/20 32° 27° August 24 Tuesday 24 rain in 10 of 20 yrs 10/20 32° 27° August 25 Wednesday 25 rain in 11 of 20 yrs 11/20 31° 27° August 26 Thursday 26 rain in 6 of 20 yrs 6/20 31° 26° August 27 Friday 27 rain in 8 of 20 yrs 8/20 31° 26° August 28 Saturday 28 rain in 11 of 20 yrs 11/20 31° 27° 22-28 rain on 44% of days 32° 27°
August 29 Sunday 29 rain in 7 of 20 yrs 7/20 32° 27° August 30 Monday 30 rain in 8 of 20 yrs 8/20 31° 27° August 31 Tuesday 31 rain in 10 of 20 yrs 10/20 31° 27°
29-31 rain on 42% of days 31° 27°
1-7 rain on 50% of days 32° 27° 8-14 rain on 58% of days 31° 27° 15-21 rain on 52% of days 31° 27° 22-28 rain on 44% of days 32° 27° 29-31 rain on 42% of days 31° 27°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
August 1 Tuesday 1 rain in 9 of 20 yrs 9/20 32° 27° August 2 Wednesday 2 rain in 12 of 20 yrs 12/20 31° 27° August 3 Thursday 3 rain in 9 of 20 yrs 9/20 31° 27° August 4 Friday 4 rain in 11 of 20 yrs 11/20 31° 27° August 5 Saturday 5 rain in 13 of 20 yrs 13/20 31° 27° 1-5 rain on 54% of days 31° 27°
August 6 Sunday 6 rain in 9 of 20 yrs 9/20 31° 27° August 7 Monday 7 rain in 7 of 20 yrs 7/20 32° 27° August 8 Tuesday 8 rain in 5 of 20 yrs 5/20 32° 27° August 9 Wednesday 9 rain in 6 of 20 yrs 6/20 32° 27° August 10 Thursday 10 rain in 11 of 20 yrs 11/20 31° 27° August 11 Friday 11 rain in 16 of 20 yrs 16/20 30° 27° August 12 Saturday 12 rain in 16 of 20 yrs 16/20 31° 27° 6-12 rain on 50% of days 31° 27°
August 13 Sunday 13 rain in 13 of 20 yrs 13/20 31° 27° August 14 Monday 14 rain in 14 of 20 yrs 14/20 31° 27° August 15 Tuesday 15 rain in 11 of 20 yrs 11/20 31° 27° August 16 Wednesday 16 rain in 11 of 20 yrs 11/20 31° 27° August 17 Thursday 17 rain in 13 of 20 yrs 13/20 31° 27° August 18 Friday 18 rain in 11 of 20 yrs 11/20 31° 26° August 19 Saturday 19 rain in 11 of 20 yrs 11/20 31° 27° 13-19 rain on 60% of days 31° 27°
August 20 Sunday 20 rain in 9 of 20 yrs 9/20 31° 27° August 21 Monday 21 rain in 7 of 20 yrs 7/20 32° 27° August 22 Tuesday 22 rain in 5 of 20 yrs 5/20 32° 27° August 23 Wednesday 23 rain in 10 of 20 yrs 10/20 32° 27° August 24 Thursday 24 rain in 10 of 20 yrs 10/20 32° 27° August 25 Friday 25 rain in 11 of 20 yrs 11/20 31° 27° August 26 Saturday 26 rain in 6 of 20 yrs 6/20 31° 26° 20-26 rain on 41% of days 32° 27°
August 27 Sunday 27 rain in 8 of 20 yrs 8/20 31° 26° August 28 Monday 28 rain in 11 of 20 yrs 11/20 31° 27° August 29 Tuesday 29 rain in 7 of 20 yrs 7/20 32° 27° August 30 Wednesday 30 rain in 8 of 20 yrs 8/20 31° 27° August 31 Thursday 31 rain in 10 of 20 yrs 10/20 31° 27°
27-31 rain on 44% of days 31° 27°
1-5 rain on 54% of days 31° 27° 6-12 rain on 50% of days 31° 27° 13-19 rain on 60% of days 31° 27° 20-26 rain on 41% of days 32° 27° 27-31 rain on 44% of days 31° 27°
Tap another date to change
2006 1mm
2007 51mm
2008 41mm
2009 36mm
2010 14mm
2011 8mm
2012 10mm
2013 none
2014 1mm
2015 6mm
2016 1mm
2017 none
2018 72mm
2019 none
2020 none
2021 4mm
2022 30mm
2023 82mm
2024 14mm
2025 12mm
Holidays in August (2027) · No public holidays this month.
Your trip dates, the past 20 years Trip dates August 1 (Sun) 2 (Mon) 3 (Tue) 4 (Wed) 5 (Thu) 6 (Fri) 7 (Sat) 8 (Sun) 9 (Mon) 10 (Tue) 11 (Wed) 12 (Thu) 13 (Fri) 14 (Sat) 15 (Sun) 16 (Mon) 17 (Tue) 18 (Wed) 19 (Thu) 20 (Fri) 21 (Sat) 22 (Sun) 23 (Mon) 24 (Tue) 25 (Wed) 26 (Thu) 27 (Fri) 28 (Sat) 29 (Sun) 30 (Mon) 31 (Tue) ~ August 1 (Sun) 2 (Mon) 3 (Tue) 4 (Wed) 5 (Thu) 6 (Fri) 7 (Sat) 8 (Sun) 9 (Mon) 10 (Tue) 11 (Wed) 12 (Thu) 13 (Fri) 14 (Sat) 15 (Sun) 16 (Mon) 17 (Tue) 18 (Wed) 19 (Thu) 20 (Fri) 21 (Sat) 22 (Sun) 23 (Mon) 24 (Tue) 25 (Wed) 26 (Thu) 27 (Fri) 28 (Sat) 29 (Sun) 30 (Mon) 31 (Tue) 1-7 8-14 15-21 22-end Whole month
You can also click two dates on the axis. Hover a cell to see that day's rain. By year Driest trips first
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Trip rain days Month rain days Tap a date to start, tap another to end. Each cell is that date in one year. '06 '07 '08 '09 '10 '11 '12 '13 '14 '15 '16 '17 '18 '19 '20 '21 '22 '23 '24 '25
of 20 Dates outside your trip are dimmed.
One row per year, one cell per day. 2011 had 6 rain days, 2018 had 23.
Hong Kong through the year Month High Low Rain days Rainfall Sea January 19° 15° 3 days 34mm 19° February 20° 15° 4 days 37mm 19° March Good 22° 18° 6 days 83mm 21° April 26° 21° 8 days 157mm 23° May 29° 25° 12 days 318mm 27° June 31° 27° 17 days 486mm 28° July 32° 27° 15 days 361mm 30° August 31° 27° 16 days 416mm 29° September 31° 26° 12 days 358mm 29° October 28° 24° 6 days 203mm 28° November Good 25° 20° 4 days 56mm 24° December Good 21° 16° 3 days 23mm 21°
What to pack Loose linen or quick-dry cotton, a wide-brimmed hat and sunscreen were the basics. A water bottle stayed in the bag, and midday plans moved indoors.
A packable rain jacket weighs almost nothing and covers 16 rain days. Leave the suede at home.
Common questions Does it rain a lot in Hong Kong in August? Over the past 20 years August averaged 16 rain days (1 mm or more) out of 31. Individual years ran from 6 in the driest to 23 in the wettest.
What should I wear in Hong Kong in August? Days averaged 31°C and nights 27°C. Pack an umbrella, sandals that can get wet, T-shirts, sunscreen plus a hat, a swimsuit, and insect repellent.
Can you swim in Hong Kong in August? Sea surface temperature averaged 28.8°C in August, warm enough to stay in for a long swim. Year to year it ranged 27.7-29.6°C. Check local flags for waves and jellyfish on the day.
Is August a good time to visit Hong Kong? On warmth and rain days alone, Hong Kong's easiest months were March, November and December. August ranked 11 of 12.
Is Hong Kong humid in August? Mean relative humidity was 84%, with about 31 muggy days (dew point of 20°C or more) in the month.
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