Hong Kong Weather in May

🇭🇰 Hong Kong

28°C

High

24°C

Low

Rain Days

Sunshine

78%

Humidity

Asia › 🇭🇰 Hong Kong › Hong Kong

Updated: March 2026

Is May a Good Time to Visit Hong Kong?

4/10

Fair

May is a fair time to visit Hong Kong (4/10). With 8 daily sunshine hours and only 20 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 9th sunniest of the year in Hong Kong. May suits travellers visiting for indoor culture, food, and architecture rather than outdoor activities. Pack accordingly for 20 potential rain days. June offers a similar profile at lower hotel rates if dates are flexible. Watch out for prolonged rain stretches: with 20 wet days, a fully outdoor itinerary is risky. Build in museum days and covered market visits as contingency. Planning tips: most accommodation categories have availability, and last-minute deals are common. The quieter streets and shorter queues can make this a genuinely enjoyable time to visit for the right type of traveller. Budget-conscious visitors will find the best value of the year in this period.

vs April:25°C avg high

May sits at a particular moment in Hong Kong's seasonal arc. Temperatures average 28°C during the day, placing this month in the warmer half of the year, when the city operates at full summer intensity. Against the seasonal backdrop, 20 rainy days and 8 sunshine hours per day help calibrate expectations for what actually awaits on the ground.

28°C

Avg High

24°C

Avg Low

20 days

Rain Days

Sunshine

78%

Humidity

Temperature in Hong Kong in May

The narrow 4°C gap between daytime and overnight temperatures, characteristic of coastal cities with maritime moderation, means a single mid-layer works across the whole day. At 78% humidity, the 28°C daytime high feels 2-4°C warmer in practice: quick-dry fabrics and shade-seeking between noon and 3pm are the sensible response. UV index averages 9 this month, classed as high to very high. SPF 30+ sunscreen, a brim hat, and sunglasses are not optional between 10am and 4pm. Wind averages 17 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 82°F average high, 75°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).

Temperature in May

Monthly Precipitation (mm)

What to Wear in Hong Kong in May

Morning24°CBefore the day warms up

Afternoon28°CPeak daytime temperature

Evening27°CAfter sunset cools down

Packing for Hong Kong in May means dressing for 28°C days and 24°C evenings. A light cotton tee with a casual overshirt works well at 28°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 24°C, a modest 4°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. With 20 rain days expected, a compact travel umbrella is worth the bag space. A waterproof jacket is better than an umbrella if you plan full-day outdoor routes. For temple and religious site visits, carry a lightweight scarf or sarong to cover shoulders and knees, required at most major sites across the region. At 78% average humidity, quick-dry synthetic or bamboo fabrics dry overnight and stay comfortable longer than cotton.

💡

Local tip: Temple and religious site visits require covered shoulders and knees in most of Hong Kong's heritage areas. A lightweight scarf or sarong weighs almost nothing and solves the problem instantly.

Events in Hong Kong in May

May has no major festivals or public holidays in Hong Kong, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.

What to Pack for Hong Kong in May

Based on 28°C average highs and 20 rainy days

Light layers for morning and evening
Breathable T-shirts and comfortable trousers
UV-protective sunglasses
Quick-dry travel towel
Anti-chafe balm for long walking days
Moisture-wicking synthetic fabrics for active days
Compact folding umbrella
Waterproof outer layer or packable rain jacket
Quick-dry clothing that recovers fast after a shower
SPF 30+ sunscreen
Comfortable walking shoes (a second pair lets the first air out overnight)
Universal travel adapter
Small day pack for city exploration
Reusable water bottle

Best Activities in Hong Kong in May

Explore outdoor markets and street food stallsMid-morning (10am-12pm)At 28°C, the temperature is ideal for extended walking without overheating
Guided walking tour of the historic centreMorning or late afternoonComfortable temperatures allow several hours on foot without fatigue
Visit rooftop viewpoints and observation decksGolden hour (1 hour before sunset)Warm clear evenings provide exceptional visibility for panoramic photography
Day trip to the surrounding countryside or coastFull day (depart by 8am)May is reliably dry enough for rural day trips without weather risk
Spend a morning in the national or city art museumOpens at 10am; arrive earlyWith 20 rain days expected, having a full-day indoor plan is practical insurance
Cooking class focused on regional cuisineHalf-day sessions run 10am-1pm or 3-6pmIndoor activity that fills a rainy half-day with genuine cultural content
Visit covered historical sites: cathedral, palace, or bazaarAny time; most crowded middayRoofed monuments and covered markets provide exploration without weather exposure
Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningMay brings distinct seasonal changes to public green spaces worth exploring
Seek out chilled local specialities: cold-brew tea, ice desserts, or chilled seafood at street-level stallsAny time; most atmospheric in evening marketsHot-weather street food culture peaks in May, with vendors setting up specifically for warm evenings

Why is Hong Kong warm in May?

In May, Hong Kong sits in the dry season corridor, as the ITCZ shifts away from the region and trade winds bring drier, more stable air. This produces reliably sunny days reaching 28°C, with lower humidity than the wet months. Overnight lows of 24°C offer a pleasant reprieve from the midday heat. Climate data: Open-Meteo ERA5 (1991–2020).

Sunshine Hours

The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.

UV Index

A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate -- wear sunscreen. UV 6-7: High -- hat and SPF 30+ essential. UV 8-10: Very High -- limit midday exposure. UV 11+: Extreme -- seek shade between 10am-4pm.

Rain Days

A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.

Humidity

Relative humidity as a percentage. Below 40%: Dry -- skin and throat may feel parched. 40-60%: Comfortable -- ideal for most people. 60-80%: Sticky -- light, breathable fabrics recommended. Above 80%: Muggy -- heat feels more intense; quick-dry clothing is essential.

Frequently Asked Questions: Hong Kong in May

In May, Hong Kong experiences average highs of 28°C (82°F) and lows of 24°C (75°F). Expect around 20 rainy days and 8 hours of sunshine per day, with humidity averaging 78%. The 4°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 9, so sun protection is advisable on clear days.

Hong Kong typically sees 20 rainy days in May, with total precipitation of around 232mm. This is a notably wet period. A waterproof jacket or compact umbrella is essential, and it is worth building indoor alternatives into your daily itinerary for the inevitable rainy stretches. For context, the driest month in Hong Kong typically sees 4-6 fewer rain days than May.

Pack light layers, a light jacket for evenings, comfortable walking shoes, and sunscreen for Hong Kong in May. Daytime temperatures of 28°C are pleasant, but the evening drop to 24°C means a jacket is essential if you plan to be out after dark. With 20 rainy days, bring a compact umbrella or waterproof jacket for unexpected showers. Comfortable walking shoes are a priority given the amount of ground most visitors cover.

May is a reasonable time to visit Hong Kong. Expect 20 rainy days, so pack a light rain layer for flexibility. Average temperatures of 28°C make outdoor exploration comfortable during the dry periods. With 8 daily sunshine hours, there are reliable windows of good weather to plan outdoor activities around, even if the month is not the driest on the calendar.

The average high temperature in Hong Kong in May is 28°C (82°F), and the average low is 24°C (75°F). The mean daily temperature is approximately 26°C (79°F). The day-to-night range of 4°C is narrow, typical of coastal or maritime cities. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.

The best month to visit Hong Kong is generally October. October offers the most sunshine at 9 hours per day and only 7 rainy days. Average temperatures reach 27°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around October gives you the best chance of dry, bright weather.

May is shoulder or low season in Hong Kong, meaning fewer tourists and generally lower prices than peak months. With 8 sunshine hours and 20 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.

In May, Hong Kong suits a range of activities thanks to mild temperatures around 28°C. With frequent rain, indoor activities and covered attractions are a smart choice. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 8 hours of sunshine, parks and waterfront walks are particularly enjoyable.

May ranks 9th sunniest of the year in Hong Kong, with an average 8 daily sunshine hours. The driest months are January, December, and November. July is the hottest month (30°C avg high); January is the coolest (19°C). From here, temperatures rise 1°C into June. Compared to last month (April: 25°C high, 14 rain days), May is warmer and wetter. May sits in the middle of the annual sunshine ranking for Hong Kong, offering a reasonable balance of good weather and manageable crowds.

Year-Round Climate

Month	High	Low	Rain Days	Sun	Details
January	19°C	13°C	4	8h	View
February	20°C	15°C	6	7h	View
March	22°C	18°C	10	7h	View
April	25°C	21°C	14	8h	View
May	28°C	24°C	20	8h	View
June	29°C	26°C	24	9h	View
July	30°C	26°C	24	10h	View
August	30°C	26°C	24	9h	View
September	29°C	25°C	17	9h	View
October	27°C	23°C	7	9h	View
November	24°C	19°C	5	9h	View
December	20°C	14°C	4	8h	View

Other Months in Hong Kong

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Plan Your Trip to Hong Kong

Best Time to Visit Hong Kong Hong Kong vs Shenzhen in May Hong Kong vs Guangzhou in May

Nearby Destinations with Similar Weather

These cities are within 500 km and experience broadly comparable weather conditions during the same calendar month, making them practical standalone alternatives or worthwhile additions to a longer regional itinerary.

Shenzhen🇨🇳 China27 km away

29°C24°C low

Guangzhou🇨🇳 China129 km away

29°C23°C low

Data Sources for Hong Kong

Hong Kong on Wikipedia Open-Meteo Climate API NOAA National Centers UK Met Office WMO GeoNames

Climate normals represent 30-year averages (1991-2020). Individual years may vary.