Your April weather guide
HotWeather in Hong Kong in April
April is a reasonable time to visit Hong Kong if you want warmth and can accept wet weather, rather than reliable sunshine. Daytime highs average 25°C, nights stay around 21°C, and about 15 days have rain. For a UK traveller, that means light clothes rather than spring layers, but an umbrella belongs in your day bag. Go for comfortable warmth after dark; reconsider if clear skies are central to your holiday.
Long-term climate averages for Hong Kong, not a forecast · 1991-2020
Hong Kong, month by month
Your snapshot
At a glance
The useful details for Hong Kong.
- Average daytime high
- 25.2°C
- 9 in 10 days stay below 28°C
- Average night-time low
- 21.0°C
- coldest 10% of nights: 18°C or lower
- Compared with London
- +11.7°C
- London averages 13.5°C in April
- Sea temperature
- 22.4°C
- year to year: 22°C to 23°C
- Sunshine per day (est.)
- 3.4h
- 27% of 12.5 h of daylight
- Rainy days (1 mm+)
- 15
- 127 mm over the month
- Humidity
- 85%
- Days over 25°C
- 60%
- 0% over 30°C
- Record high 1991-2020
- 30.5°C
- 2011-04-27
- Record low 1991-2020
- 12.4°C
- 1991-04-01
- Flight from London
- ≈ 12 h 48 min
- 9652 km, long-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How April compares
April is the 7th warmest month of the year in Hong Kong and ranks 43rd of 134 destinations we compare for April - see where else is hot in April. Against London's average high of 13.5°C in April, Hong Kong is 11.7°C warmer by day and 15.9°C warmer at night.
Daytime and night-time in April
The typical April day in Hong Kong peaks at 25.2°C, but that is an average: the warmest 10% of days reach 28.1°C or more. About 60% of days top 25°C and 1 in 500 pass 30°C. Nights average 21.0°C; one night in ten drops to 18.1°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest April day here reached 30.5°C (2011-04-27) and the coldest night 12.4°C (1991-04-01).
Rain in April
Wet (more than 8 rainy days): about 15 days with 1 mm or more, 127 mm in total. Year to year it varies a lot - the wettest April was 1992 with 322 mm, the driest 2002 with 13 mm. Humidity averages 85%.
Sea temperature in April
The sea averages 22.4°C - warm enough to swim (22°c+). Depending on the year it ranges from 21.8°C to 23.2°C. For the warmest sea here, come in August (28.5°C).
Sunshine and daylight
Around 3.4 hours of sunshine a day (estimated from cloud cover), 12.5 hours of daylight: the sun rises about 06:03 and sets about 18:43 local time in mid-April. Average cloud cover is 73%.
Is April a good time to visit Hong Kong?
It is a reasonable choice: hot days but expect showers. The best months for Hong Kong on our scoring are November, October, September; months averaging 25°C or more: Apr, May, Jun, Jul, Aug, Sep, Oct.
Warm days, with humidity the catch
April feels warm rather than consistently very hot, but humidity of 85% can make walking feel sticky. Around 60% of days reach 25°C, while the warmer days can reach 28°C or more. Loose, breathable clothes make more sense than heavy layers, and keeping your more energetic plans away from midday should help with comfort. Average night lows of 21°C mean evenings usually offer only modest relief, not a sharp drop into chilly weather. A light layer is still sensible if you feel the cold, as the cooler nights can fall to 18°C or below. This suits travellers who enjoy warmth without needing intense heat.
Plan for rain, not a sunshine-led holiday
With about 15 rainy days, April calls for flexible plans rather than a schedule that depends on staying outdoors. Carry a compact umbrella and a lightweight waterproof, and choose footwear you can tolerate getting wet. There are about 12.5 hours of daylight, but only 3.4 hours of sunshine a day, so long light evenings should not be confused with reliably clear skies. Rain need not rule out a visit, though it is a meaningful drawback if you mainly want to sit in the sun. If your dates are flexible, November, October and September are stronger overall choices for weather; April is more of a compromise.
A little perspective
Hong Kong through the year
April is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 18.7°C | 13.6°C | 18.9°C | 5.0 | 24 | 4 | 0% |
| February | 19.8°C | 15.1°C | 19.3°C | 3.6 | 34 | 7 | 4% |
| March | 22.4°C | 17.7°C | 20.3°C | 3.2 | 71 | 10 | 17% |
| AprilSelected | 25.2°C | 21.0°C | 22.4°C | 3.4 | 127 | 15 | 60% |
| May | 27.7°C | 24.0°C | 25.5°C | 3.0 | 233 | 20 | 93% |
| June | 29.2°C | 25.9°C | 27.9°C | 2.2 | 331 | 24 | 99% |
| July | 29.9°C | 26.4°C | 28.4°C | 3.3 | 253 | 23 | 100% |
| August | 29.9°C | 26.2°C | 28.5°C | 3.5 | 326 | 24 | 100% |
| Septemberbest | 29.1°C | 25.2°C | 28.2°C | 4.8 | 217 | 17 | 99% |
| Octoberbest | 27.1°C | 22.8°C | 26.7°C | 6.4 | 70 | 7 | 92% |
| Novemberbest | 24.0°C | 19.2°C | 23.7°C | 6.0 | 35 | 5 | 36% |
| December | 20.0°C | 14.8°C | 20.3°C | 5.6 | 29 | 4 | 3% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
- Sea
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in April
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
Cape Verde · 25°C by day · sea 22°C
Boa Vista
United States · 25°C by day · sea 25°C
Hawaii
Bahamas · 26°C by day · sea 25°C
Bahamas
Morocco · 24°C by day
Marrakech
Brazil · 28°C by day · sea 25°C
Rio de Janeiro
A little more detail
Hong Kong in April FAQs
Plain answers, grounded in the averages.
Is Hong Kong hot in April?
Hong Kong is hot in April: the average daytime high is 25.2°C and nights average 21.0°C. About 60% of April days reach 25°C or more.
Can you swim in the sea in Hong Kong in April?
The sea around Hong Kong averages 22.4°C in April, which is warm enough for most people to swim comfortably. Between 1991 and 2020 it ranged from 22°C to 23°C depending on the year.
How much does it rain in Hong Kong in April?
Hong Kong sees about 15 rainy days (1 mm or more) and 127 mm of rain in a typical April. The wettest April between 1991 and 2020 was 1992 (322 mm) and the driest was 2002 (13 mm).
How sunny is Hong Kong in April?
Hong Kong gets around 3.4 hours of sunshine a day in April out of 12.5 hours of daylight (estimated from average cloud cover).
How does Hong Kong compare with the UK in April?
Hong Kong is on average 11.7°C warmer than London by day in April (25.2°C against 13.5°C).
What is the hottest April on record in Hong Kong?
Between 1991 and 2020 the hottest April day in Hong Kong reached 30.5°C on 2011-04-27, and the coldest night dropped to 12.4°C on 1991-04-01.
Is the sea warm enough for swimming in April?
Yes, the sea averages 22.4°C, which is warm enough for swimming, though it may feel cool when you first get in. Year-to-year temperatures sit between 22°C and 23°C. It suits a swim better than a holiday built around guaranteed sunny beach days.
How much warmer is Hong Kong than London in April?
Hong Kong's average daytime high is 25.2°C, compared with London's 13.5°C - a difference of 11.7°C. That is a substantial change from a UK spring, and the high humidity makes breathable clothing particularly useful when you are out walking.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020
Averages computed from daily values at Hong Kong. Sea temperature from the nearest 5 km sea cell, 0.4 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C