Hoi An Weather in May

🇻🇳 Vietnam

32°C

High

26°C

Low

Rain Days

11h

Sunshine

78%

Humidity

Asia › 🇻🇳 Vietnam › Hoi An

Updated: March 2026

Is May a Good Time to Visit Hoi An?

4/10

Fair

May is a fair time to visit Hoi An (4/10). With 11 daily sunshine hours and only 15 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 2nd sunniest of the year in Hoi An. May suits travellers visiting for indoor culture, food, and architecture rather than outdoor activities. Pack accordingly for 15 potential rain days. June offers a similar profile at lower hotel rates if dates are flexible. Watch out for prolonged rain stretches: with 15 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:30°C avg high

Hoi An's May climate peaks at 32°C each afternoon before cooling to 26°C overnight. 11 daily sunshine hours and just 15 wet days mean the odds of a fine day are solidly in your favour. It is a reasonable time to visit, with a backup plan for the occasional shower.

32°C

Avg High

26°C

Avg Low

15 days

Rain Days

11h

Sunshine

78%

Humidity

Temperature in Hoi An in May

The 6°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. At 78% humidity, the 32°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. Winds are calm at an average 14 km/h, so wind-chill is not a factor in planning your clothing. In Fahrenheit: 90°F average high, 79°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).

Temperature in May

Monthly Precipitation (mm)

What to Wear in Hoi An in May

Morning26°CBefore the day warms up

Afternoon32°CPeak daytime temperature

Evening29°CAfter sunset cools down

Packing for Hoi An in May means dressing for 32°C days and 26°C evenings. A lightweight linen or cotton shirt with loose-fit trousers or a sundress handles the 32°C daytime heat. Evening temperatures settle at 26°C, a modest 6°C drop that a light cardigan or denim jacket covers. For footwear, breathable walking sandals work for casual exploration, but closed-toe trainers are better for uneven surfaces in the historic centre. With 15 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.

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Local tip: Loose-weave linen and moisture-wicking fabrics are the practical choice in Hoi An's heat and humidity. Many shopping centres run air conditioning at near-arctic levels, so a thin layer in your bag prevents discomfort indoors.

Events in Hoi An in May

May has no major festivals or public holidays in Hoi An, 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 Hoi An in May

Based on 32°C average highs and 15 rainy days

Lightweight breathable clothing
Linen or bamboo shirts for the hottest hours
Sun hat with a wide brim
UV-protective sunglasses
Hydration bottle (at least 1 litre)
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 Hoi An in May

Early morning walk through Hoi An's historic market districtBest before 9amTemperatures are still manageable at 28°C before the midday heat builds
Open-air rooftop dining at sunsetFrom 6pm onwardsThe 32°C daytime heat drops noticeably after sunset, making al fresco dining comfortable
Waterfront promenade or harbour walkEarly morning or after 5pmSea breezes cut through the humidity, making coastal routes the most pleasant in heat
Guided cycling tour of the old quarterFirst tour of the day (7-9am)The low-traffic window before tourist crowds and the cooler morning air make this the prime riding slot
Spend a morning in the national or city art museumOpens at 10am; arrive earlyWith 15 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 Hoi An warm in May?

In May, Hoi An 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 32°C, with lower humidity than the wet months. Overnight lows of 26°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: Hoi An in May

In May, Hoi An experiences average highs of 32°C (90°F) and lows of 26°C (79°F). Expect around 15 rainy days and 11 hours of sunshine per day, with humidity averaging 78%. The 6°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.

Hoi An typically sees 15 rainy days in May, with total precipitation of around 113mm. Rain is moderate and manageable. Showers tend to pass quickly, and a light rain layer or foldable umbrella is sufficient protection for most days. For context, the driest month in Hoi An typically sees 4-6 fewer rain days than May.

Pack lightweight, breathable clothing (linen or cotton), a wide-brim sun hat, SPF 50+ sunscreen, and a refillable water bottle for Hoi An in May. The 32°C daytime heat demands sun protection during midday hours, typically 11am to 4pm. A compact travel umbrella is also worth packing, as 15 rainy days means afternoon showers are a real possibility. Quick-dry synthetic fabrics are preferable to cotton in 78% humidity.

May is a reasonable time to visit Hoi An. Expect 15 rainy days, so pack a light rain layer for flexibility. Average temperatures of 32°C make outdoor exploration comfortable during the dry periods. With 11 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 Hoi An in May is 32°C (90°F), and the average low is 26°C (79°F). The mean daily temperature is approximately 29°C (84°F). The day-to-night range of 6°C is moderate, meaning a single light jacket covers most situations. 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 Hoi An is generally April. April offers the most sunshine at 11 hours per day and only 9 rainy days. Average temperatures reach 30°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around April gives you the best chance of dry, bright weather.

May is shoulder or low season in Hoi An, meaning fewer tourists and generally lower prices than peak months. With 11 sunshine hours and 15 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, Hoi An suits a range of activities thanks to warm temperatures of 32°C. Mix of indoor and outdoor activities works well given the moderate chance of rain. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 11 hours of sunshine, parks and waterfront walks are particularly enjoyable.

May ranks 2nd sunniest of the year in Hoi An, with an average 11 daily sunshine hours. The driest months are April, March, and February. June is the hottest month (33°C avg high); January is the coolest (24°C). From here, temperatures rise 1°C into June. Compared to last month (April: 30°C high, 9 rain days), May is warmer and wetter. May is among the top three sunniest months to visit Hoi An.

Year-Round Climate

Month	High	Low	Rain Days	Sun	Details
January	24°C	20°C	17	7h	View
February	25°C	20°C	11	9h	View
March	27°C	22°C	10	10h	View
April	30°C	24°C	9	11h	View
May	32°C	26°C	15	11h	View
June	33°C	27°C	14	11h	View
July	33°C	27°C	16	10h	View
August	32°C	27°C	19	10h	View
September	30°C	25°C	23	9h	View
October	28°C	24°C	25	8h	View
November	26°C	23°C	22	8h	View
December	24°C	21°C	23	6h	View

Other Months in Hoi An

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

Plan Your Trip to Hoi An

Best Time to Visit Hoi An Hoi An vs Da Nang in May Hoi An vs Nha Trang 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.

Da Nang🇻🇳 Vietnam24 km away

32°C26°C low

Nha Trang🇻🇳 Vietnam415 km away

32°C26°C low

Data Sources for Hoi An

Hoi An 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.